congratulations on the selection of a data aire …

AIR-COOLED CONDENSER

2 • Air-Cooled Condenser Manual

CONGRATULATIONS ON THE SELECTION OF A DATA AIRE PRECISION

ENVIRONMENTAL CONTROL SYSTEM. PROPER INSTALLATION, OPERATION AND

MAINTENANCE OF THIS EQUIPMENT WILL ENSURE YEARS OF OPTIMAL

PERFORMANCE.

Safety Alert Symbols and Words for Hazard Alerting Safety

DANGER indicates a hazardous situation which, if not

avoided, will result in serious injury or death.

WARNING indicates a hazardous situation which, if not

avoided, could result in serious injury or death.

CAUTION indicates a hazardous situation which, if not

avoided, could result in minor or moderate injury.

NOTICE indicates information considered important but may

have potential hazard for personal injury or property damage.

NOTICE: This Installation, Operation and Maintenance Manual (IOM)

is intended to assist trained service personnel by providing necessary

guidelines for this equipment. Service to Data Aire units should be

done by qualified individuals with an adequate background in areas

such as HVAC, electrical, plumbing and electronics, as applicable.

WARNING: Service performed by unauthorized or unqualified

technicians may void manufacturers’ warranties and could result in

property damage and/or personal injury.

WARNING: Special care should be given to those

areas where these symbols appear.

Data Aire, Inc. reserves the right to make design and component changes for the

purpose of product improvement or to withdraw any design without notice.



TABLE OF CONTENT

1.0 INTRODUCTION .................................................................................................. 5

1.1 MODEL IDENTIFICATION ................................................................................................ 5

1.2 INSPECTION ................................................................................................................. 5

1.3 PAPERWORK ................................................................................................................ 6

1.4 STORAGE..................................................................................................................... 6 1.4.1 Suggested Storage Room Conditions ..................................................................................... 7 1.4.2 General Storage Considerations ............................................................................................. 7

1.5 LOCATING THE REMOTE HEAT EXCHANGER ................................................................... 8

1.6 LEG ASSEMBLY ...........................................................................................................10

1.7 RIGGING .....................................................................................................................10

1.8 INSTALLATION .............................................................................................................11 1.8.1 Installation Checklist .............................................................................................................. 11

2.0 PIPING ............................................................................................................... 13

2.1 DISCHARGE LINES (ALSO REFERRED TO AS HOT GAS LINES): ..........................................14 2.1.1 Discharge Gas Pulsation ....................................................................................................... 15

2.2 LIQUID LINES ...............................................................................................................15

2.3 FIELD PIPING – REMOTE AIR-COOLED CONDENSER .......................................................16

2.4 FIELD PIPING, REMOTE AIR-COOLED CONDENSER (ABOVE EVAPORATOR) ......................17

2.5 REFRIGERANT PIPING PROTECTION ..............................................................................18

2.6 CONDENSER CONNECTION SIZES .................................................................................19

2.7 LEAK TESTING .............................................................................................................21

2.8 TRIPLE EVACUATION AND DEHYDRATION PROCEDURE ...................................................21 2.8.1 First Stage Evacuation .......................................................................................................... 23 2.8.2 Second Stage Evacuation ..................................................................................................... 23 2.8.3 Third Stage Evacuation ......................................................................................................... 23 2.8.4 Final Evacuation Stage ......................................................................................................... 24

3.0 ELECTRICAL CONNECTIONS .......................................................................... 26

3.1 GENERAL ELECTRICAL FIELD WIRING GUIDELINES ........................................................27

3.2 ELECTRICAL SERVICE ..................................................................................................27

3.3 NAMEPLATE RATINGS ..................................................................................................28

3.4 GROUNDING ................................................................................................................28

3.5 VOLTAGE TOLERANCE .................................................................................................28 3.5.1 Three Phase Voltage Tolerance............................................................................................ 28 3.5.2 Single-Phase Voltage Tolerance ........................................................................................... 28

3.6 PHASE ........................................................................................................................29

3.7 HEAT EXCHANGER AUXILIARY CONTROL WIRING ...........................................................29

3.8 DISCONNECT SWITCH (OPTIONAL) ................................................................................30

3.9 WIRING DIAGRAMS ......................................................................................................31

4.0 CHARGING ........................................................................................................ 32

4.1 FAN SPEED CONTROL/FAN CYCLING ............................................................................32 4.1.1 GHRC and GHCU Condensers ............................................................................................. 32 4.1.2 DARC and DACU Condensers .............................................................................................. 32

4.2 AMBIENT THERMOSTATS ..............................................................................................32



4.2.1 Typical Ambient Thermostats Factory Settings: .................................................................... 33

4.3 CHARGING WITH FAN SPEED CONTROL.........................................................................33 4.3.1 R410A Charging/Installation Work Procedures ..................................................................... 33

4.4 FLOODED SYSTEMS .....................................................................................................34 4.4.1 Charging Flooded Systems ................................................................................................... 34

4.5 LOW AMBIENT RECEIVER PACKAGE ..............................................................................35 4.5.1 Refrigerant Receiver ............................................................................................................. 35 4.5.2 Receiver Applications ............................................................................................................ 36 4.5.3 Selection Guidelines .............................................................................................................. 36 4.5.4 Receiver Location .................................................................................................................. 36 4.5.5 Safety Relief Devices ............................................................................................................ 36

4.6 REFRIGERANT HANDLING .............................................................................................37

5.0 WARRANTY ....................................................................................................... 38

6.0 MAINTENANCE ................................................................................................. 38

6.1 SERVICE VS. MAINTENANCE .........................................................................................38 6.1.1 General Maintenance Requirements .................................................................................... 38 6.1.2 Maintenance/Inspection Checklist ......................................................................................... 39

6.2 CABINET .....................................................................................................................39

6.3 COILS .........................................................................................................................40 6.3.1 Coil Cleaning ......................................................................................................................... 40 6.3.2 When to Clean ....................................................................................................................... 40 6.3.3 What to Use ........................................................................................................................... 40 6.3.4 How to Clean ......................................................................................................................... 41

6.4 ELECTRICAL CONTROL ENCLOSURE .............................................................................42

6.5 FUSE REPLACEMENT ...................................................................................................42

6.6 AXIAL FANS WITH ELECTRONICALLY COMMUTATED MOTOR............................................43 6.6.1 Electronically Commutated (EC) Fan Troubleshooting ......................................................... 43 6.6.2 Before you begin ................................................................................................................... 43 6.6.3 Tools required for initial troubleshooting ............................................................................... 43 6.6.4 Confirm to Following .............................................................................................................. 44 6.6.5 If the motor does not operate, proceed to next steps ........................................................... 44 6.6.6 Confirm Incoming Voltage ..................................................................................................... 45 6.6.7 Checking DC Outputs from the Motor ................................................................................... 45 6.6.8 General Note on Control Wiring ............................................................................................ 45

7.0 LINE SIZES ........................................................................................................ 47

8.0 FREQUENTLY ASKED QUESTIONS (FAQ)...................................................... 48

9.0 CONTACT DATA AIRE ...................................................................................... 50



1.0 INTRODUCTION

The Data Aire air-cooled condenser is low-profile direct-drive propeller or axial fan-type

heat exchanger unit suitable for mounting outdoors. It provides for the heat rejection of

either one or two separate refrigeration circuits, matching heat rejection capacity varying

with the outdoor ambient temperatures and with each corresponding compressor heat

rejection requirements. Constructed with an aluminum cabinet and a copper-tube

aluminum fin coil, the unit is quiet and corrosion resistant. The condenser is quickly and

easily installed, because all internal wiring is completed at the factory with only electrical

connections to be made at the job site. All electrical connections and controls are

enclosed in an integral weatherproof electrical control section of the condenser.

1.1 Model Identification

1.2 Inspection

This Data Aire unit has been factory run tested and has passed a comprehensive

inspection prior to packaging and shipment ensuring it arrives in excellent condition.

However, shipping damage can occur and a visual inspection of the outer crating

immediately upon delivery should be performed.

NOTICE: Note any external damage or other transportation damage

on the freight carrier’s forms. Inspect the unit itself for internal damage.

A claim should be filed with the shipping company if the equipment is

damaged or incomplete.

Loose items such as remote-controller display panel, disconnect switch handles or other

items are packed inside the unit. Refer to the yellow shipping tag located on the door for

details.

Before unpacking the condenser, verify that the labeled equipment matches the bill of

lading.

GH RC - nnn X X LD

│ │ │ │ │ │

gForce EC Fans - GH │ │ │ │ │ └ LD - Low Decibel

PSC Fans - DA ────┘ │ │ │ │

│ │ │ │ Voltage

│ │ │ │ 2 - 208/230 VAC

│ │ │ └ ────4 - 460 VAC

Remote Condenser - RC ────────┘ │ │

│ │

Nominal kW or Tons ────────────────┘ │ Phase

└ ────────1 - Single phase

3 - Three phase

Remote Condenser Model Numbering



NOTICE: Freight damage claims are the responsibility of the

purchaser. Action to recover losses should be filed immediately.

Please notify factory personnel of any claims.

1.3 Paperwork

Each Data Aire unit ships with paperwork which includes a start-up sheet that should be

completed during installation. Return the completed Start-Up Sheets to the factory to

validate the warranty. Also included in the paperwork is a warranty/information packet

that provides important wiring diagrams, specific component literature, warranty

registration cards and other valuable paperwork including a copy of this Installation,

Operation and Maintenance Manual (IOM). A yellow tag is attached to the outside panel

of the unit to indicate articles that may have been packaged and shipped loose within the

unit that are not factory mounted.

NOTICE: It is the responsibility of the installing contractor to return the

Start-Up Sheet and warranty registration card to Data Aire for proper

activation of the unit warranty. Failure to do so may cause delays and

in some cases void the warranty.

WARNING: This equipment may contain substance that has been

deemed harmful to public health and the environment. Venting of

refrigerants to the atmosphere is illegal. Refrigerant recovery

devices must be used when installing and/or servicing these types

of products.

1.4 Storage

Data Aire equipment comes ready for immediate installation. However, in some

instances, it may be necessary to store the equipment for a period. If you must store the

equipment, it should be done in a dry area, out of the weather, protected from freezing

temperatures, protected from damage by other equipment in storage, or transportation

equipment. Avoid stacking and frequent relocation.

If equipment is stored for longer than 30 days special precautions must be taken to avoid

coil damage. All coils should be charged and sealed with a low pressure (less the 25

PSIG (172 kPa)) inert gas, such nitrogen. This prevents contaminants from entering the

coils. When the seal is broken at installation, the rush of escaping gas verifies the coil is

still leak free. If coils are not charged and sealed, condensation mixes with air pollutants

forming a weak acid and over time can cause pinhole leaks to develop in coil tubes.

Short-term storage is considered 60 days or less from shipment date. Long-term storage

is considered any period beyond 60 days from date of shipment. It is mandatory that a

detailed record be maintained during this long-term period, such as, but not limited to



proper sealing of the cabinet, rotation of the fans, blowers and bearings, and protection

of all motors from moisture. Check the fan rotation monthly, the fan and motor should be

rotated several times to replenish the bearing surfaces with fresh grease as needed and

to prevent flat spots of the fan shaft. The fan impeller should be left at approximately 180°

from that of the previous month to prevent the belts from taking a set position.

It will be the responsibility of the customer to submit a monthly log sheet showing the

condition of the unit and noting any discrepancies. A copy of the log sheet should be sent

to Data Aire. Failure to perform the long-term storage requirements may void the

warranty.

1.4.1 Suggested Storage Room Conditions

This information is provided for reference and guidance purposes only.

• Dry bulb temperature range: 65°F to 85°F (18.3F to 29.4F).

• Effects of high temperatures may dry out components or may damage electrical

components, if applicable.

• Effects of low temperatures may cause freezing damage to coil, compressor,

system components, electrical components, etc. Freezing temperatures must be

avoided, if applicable.

• Humidity range: 25 to 50% RH.

• High humidity may cause damage to insulation and electrical components. Storage

in moist air, above 50%, should be avoided. High humidity may cause rust on metal

components such as sheave, pulley, blower housing, cabinet parts, supports, etc.

• Low Humidity may cause brittle conditions to components within the unit. At low

humidity, problems of brittleness or electrical static might arise for the equipment.

• Level with floor.

• Units with compressor maximum tilt angle is 30° (compressor not running) but

recommend the unit be set level for 24 hours prior to final installation.

• Store at non-condensing temperature and humidity conditions.

1.4.2 General Storage Considerations

• All equipment shall be stored for safety of occupants. Per OSHA codes and codes

applicable to your installation.

• Maintain clearance from working space and traffic areas.

• Components sealed in plastic shrink-wrap are not exempt from this requirement.

Moisture will collect inside the plastic, resulting in corrosion of the cabinet, the

electronic components and or other water sensitive components.

• Provide proper fire protection per local and national codes.

• Protect from all water or fluid sources. Equipment should be protected from

possible water damage, such as from leaks, fire-sprinkler discharge, and flooding.

• The storage space should be filtered to remove dust, cleansed of gaseous

contaminants, if present, and controlled to the desired relative humidity and

temperature.



• Isolate this equipment from pressure testing of water, steam, gas and air piping.

• Isolate this equipment from temporary building power.

• The unit must also be protected from damage to the exterior of the cabinet or coil

connections by construction vehicles and personnel.

• Isolate from vibration sources.

• Isolate from direct sun light.

• Isolate from storage of hazardous materials and substances.

• Refrigerant coils have been evacuated and pre-charged with slight nitrogen

holding charge. DO NOT damage or disturb these coils and connections.

• Water coils must have all inlet and outlet connections capped or closed tight to

prevent foreign materials and liquids from gaining entrance during the storage

period.

• When equipment is installed after storage, caution should be taken to inspect and

replace damaged components, if required.

• All moving parts should be hand tested to ensure they are free and clear prior to

start-up.

1.5 Locating the Remote Heat Exchanger

Locating remote air-cooled condensers (i.e., heat exchangers) installation:

• In secure areas offering maximum security.

• Where service is easily accessible.

• Areas where public access is available should be avoided.

• Install in an area with adequate air flow. Remote heat exchangers should be

located in clean areas free from debris or foreign matter that could clog the coil

surface. Avoid areas with loose dirt or other blowing matter which might clog the

coil.

• Avoid areas that contribute to ice and snow accumulation. The Remote heat

exchanger may need to be elevated to ensure it is above the snow line in certain

regions of the country.

• Avoid areas of hot air or fume exhaust. Remote heat exchangers should not be

located near steam vents.

• Heat exchangers located in areas which are exposed to ocean salt air, industrial

or agricultural areas with air pollution should be specified with an optional coil

coating.

• Heat exchangers must be installed on a level surface.

• Mount the heat exchangers with vertical airflow unless the heat exchanger is a

special horizontal airflow unit.

• Remote heat exchangers should not be closer than 36 inches (914 mm) from a

wall or any obstruction. with proper clearance on all other sides.

• With proper clearance on all sides, two (2) units can be placed side by side.

Additional units must be placed at least 48 inches (1219 mm) apart. See Figure 1

Typical Condenser Spacing.



Figure 1 Typical Condenser Spacing

• Avoid air recirculation conditions that could be caused by walls, screening, etc.

• Do not connect any ductwork to the coil inlet or fan outlet.

• Keep fan discharge away from building air intakes.

• The remote heat exchanger must be located in an area that will ensure airflow into

and out of the heat exchanger plus adequate service access clearance. Short

circuiting of the airflow or the intake of warmer air from another unit will seriously

degrade the performance of the air-cooled heat exchanger.

• Do not locate the heat exchanger in a location that is bordered by tall obstructions

(i.e. higher than 10 feet (3 meters)) on more than two sides. Do not install heat

exchangers in a pit. See Figure 1 or minimum clearance from obstructions and

between units.

• Noise factors should be considered when locating an air-cooled heat exchanger.

Proximity to windows, walls and surrounding structures can cause objections by

the occupants. An acoustical expert should be consulted when noise is of a

concern.

• Avoid installing units near occupied spaces, above or outside utility spaces and

corridors whenever possible in order to reduce sound transmission and/or vibration

to occupied spaces.

• Refrigerant piping should be flexible enough to prevent transmission noise or

vibration from the unit. Isolation hangers should be used to prevent the

transmission of vibration on all suspended (from the building) refrigerant lines.

• Dual wide heat exchangers are field mounted side by side (see drawing 600-000-

881).

• Air-cooled condensers should be placed at a level that is higher than the indoor

evaporator. It is not recommended to mount the remote heat exchanger more



than 10 feet below the evaporator. Excessive liquid line pressure drop can cause

poor evaporator performance.

• Air-cooled condensers with a receiver cannot be installed below the evaporator.

• Consult the Data Aire Service department before installing heat exchangers

outside of these conditions.

1.6 Leg Assembly

The legs must be unbolted from their collapsed shipping position and extended prior to

placing the unit on its pad. Each leg extends down approximately 18 inches (457 mm)

and reattaches using the same bolts.

NOTICE: Failure to extend the legs will result in poor air distribution

over the cooling coil resulting in significant capacity reduction and

system failure.

Concrete pads are often used to provide support for the heat exchanger when set on the

ground. Bolt holes in the bottom of each leg can be used to anchor the unit. Units mounted

on the roof should be placed on or suitable curbs or rails designed to distribute the unit

weight. Standard practices and in accordance with local codes should be followed in

either instance.

1.7 Rigging

Outdoor condensers should be moved to their mounting location (typically rooftop) using

a crane or forklift. Each fan section has heavy gage, steel leg supports with lifting holes

at the top of the legs.

Do not lift with a choke sling around the unit or coil. Spreader bars are recommended for

lifting multiple fan units (See Figure 2). Under no circumstances should the coil headers

or piping be used for lifting the unit. Ideally, the unit should be kept in its shipping crate

until it is ready to be set in place.

WARNING: Use care when moving this equipment. Improper

handling could result in injury. Proper care should be taken when

uncrating the unit. The packaging has wrapping bands with sharp

edges that are under tension, crating has staples and splinters.

Proper protective equipment should be worn by qualified personnel.



Figure 2

1.8 Installation

NOTICE: There is no intent on the part of Data Aire, Inc. to define local

codes or statutes which may supersede common trade practices. The

manufacturer assumes no responsibility for their interpretation.

Consult local building codes and the National Electrical Code (NEC)

for special installation requirements.

1.8.1 Installation Checklist

WARNING: When preparing the equipment, proper care should be

taken when uncrating the unit. The packaging has wrapping bands

with sharp edges that are under tension, crating has staples and

splinters. Proper Protective Equipment (PPE) should be worn by

qualified personnel.

● Remove the metal strapping bands

● Remove the wooden crating

● Remove the protective plastic covering

WARNING: Before removing from the packaging inspect the

unit for any damage. Report any damage to the carrier and file

a damage claim.

As a precaution, review the following checklist to ensure proper operation. Failure to meet

the following conditions could result in voiding the warranty:

• Only qualified and experienced service technicians should perform installation and maintenance on this product.

• Check for any damage.

• Check all wiring connections.

• Equipment damage and personal injury can result from improper piping installation, leak checking and improper handling.



• This equipment is designed to operate properly and produce rated capacities when installed in accordance with industry standards.

• System piping must be installed following industry standards for good piping

practices.

• System must be thoroughly leak checked before initial charging

• System power supply must meet Voltage Tolerance (see section 3.5).

• All controls and safety devices properly connected per wiring diagram.

• Factory installed wiring must not be changed without written factory approval.

• Additionally, the refrigerant piping must comply with local code.

• After piping is completed all joints (and connections) should be leak tested.



2.0 Piping

Refer to the Line Size chart (7.0 LINE SIZES) for guideline regarding sizing refrigerant

lines. The ultimate responsibility for line size selection is that of the installing contractor

or project engineer. Data Aire does not assume this responsibility. The chart covers

distances up to 200 equivalent feet (61 meters). For installations greater than this

distance refer to ASHRAE or similar references.

NOTICE: Standard piping practice must be used to ensure proper oil

return and efficient operation. The interconnecting lines to the remote

air-cooled condenser must be installed by a qualified refrigeration

mechanic.

• All refrigerant piping should be is Type L Air Conditioning Refrigeration (ACR) hard

drawn copper pipes. Soft copper is unacceptable.

• Completely de-burr and clean tube end and inside surface of piping.

• Data Aire recommends a silver/phosphorus/copper alloy with 5 to 15% silver be

used to braze the refrigerant line sets to the indoor and outdoor units.

• When brazing refrigerant lines, an inert gas (dry nitrogen is preferred) must be

passed through the line at low pressure to prevent scaling, oxidation inside the

tubing and to eliminate carbon deposit build-up on the inside of the joints. Carbon

could contaminate the refrigerant and restrict the metering device.

• No soldering allowed.

• All refrigeration piping materials are subject to changes in temperature and will

expand and contract with temperature change. Installation techniques must allow

for expansion and contraction changes for piping connections, this will prevent

stresses which may buckle and rupture the copper tube piping or joints.

• Do not leave dehydrated piping or components open to atmosphere any longer

than is required.

• Welded or sweat joints should be used.

• Piping must be supported within 18 inches (457 mm) of the inlet and outlet

connections.

• Proper piping practices should be employed to ensure adequate oil return, even

under minimum load conditions with special consideration given to the size and

proper slope of the tubing coming from the evaporator. See the evaporator section

manual for more information regarding line sizes.

• Tubing returns from the evaporator should be designed so as not to trap oil and to

prevent oil and refrigerant migration back to the compressor during compressor off

cycles.

• Piping should be designed with adequate three-dimensional flexibility.

• It should not be in contact with the surrounding structure, unless a proper tubing

mount has been installed. This protection proves necessary to avoid excess

vibration, which can ultimately result in connection or tube failure due to fatigue or

wear from abrasion. Aside from tubing and connection damage, excess vibration



may be transmitted to the surrounding structure and generate an unacceptable

noise level within the structure as well.

• When piping, use copper tubing with appropriate supporting devices (supporting

saddles, etc.).

• All field piping must be installed according to local codes.

• Avoid piping runs through noise-sensitive areas, such as office walls and

conference rooms.

• Piping and to the ASHRAE Refrigeration Handbook for general, good-practice

refrigeration piping.

• Ensure that the tubing surfaces to be brazed are clean and that all burrs have been

removed from the ends of the tubes.

• Ensure that all loose material has been cleaned from inside the tubing before

brazing.

• Keep piping clean and dry, especially on units with R410A refrigerant.

2.1 Discharge Lines (also referred to as hot gas lines):

• Must be trapped at the top (inverted) and the bottom.

• In addition, a trap should be installed for every 15 to 20 feet (4.6 to 6.1 meters) of

vertical rise.

• Discharge line check valves are recommended on all installations especially those

with long pipe runs or in cold climates.

• For air-cooled units built after April 2017, the discharge check valves are already

installed inside the evaporator section and do not need to be installed external to

the unit. For units built before this date, the check valves must be field supplied

and installed externally to the evaporator section. If there is doubt as to whether

the check valve is already installed in the unit, look for it on the hot gas line close

to the exit point of the indoor evaporator. The externally installed check valve

should be placed from six (6) to ten (10) feet (1.8 to 3.1 meters) from the

compressor.

• Proper design will minimize refrigerant pressure drop and will maintain sufficient

gas velocity to carry oil through the condenser.

• Discharge line pressure drop should not exceed 9 PSI (62 kPa) for R410A and 6

PSI (41 kPa) for R407C.

• Recommended gas velocity for proper oil return is 1,000 FPM (5.1 m/sec).

• Slope horizontal lines downward in the direction of refrigerant flow. The

recommended slope is ½” (inch) (12 mm) for every ten (10) feet (3 meters) of line

length.

• Discharge lines do not require insulation but due to the high temperatures of the

refrigerant inside the line, the pipes may be insulated to protect against burns to

individuals near or around the lines.



2.1.1 Discharge Gas Pulsation

Gas pulsation in a refrigeration system is most commonly attributed to the compressor

and connecting discharge piping. The presence and magnitude of these pulsations can

be caused by the system piping configuration, line sizing, operating pressures and/or

compressor and component mounting.

2.2 Liquid Lines

• Liquid line size is determined by pressure drop and velocity. The liquid line

pressure drop should not exceed9 PSI (62 kPa) for R410A or 5 PSI (35 kPa) for

R407C.

• The recommended velocity should be between 200 and 300 FPM (1 to 1.5 m/sec).

• To avoid excessive liquid line pressure drop the air-cooled condenser should be

located above or at the same level of the as the evaporator section.

• Condenser installation more than 15 feet (4.6 meters) below the evaporator section

is not recommended and should be avoided.

• Insulation of liquid lines is not required but can be useful in preventing excessive

sub-cooling or flashing on long exposed pipe runs.



2.3 Field Piping – Remote Air-Cooled Condenser

Figure 3 Remote Air-Cooled Condenser

NOTES: (Unless otherwise specified by job specific documentation)

1. This is recommended piping. All piping to be per local and/or state codes.

2. Condenser to be no more than 60 feet (18.3 meters) above evaporator.

3. For units built after April 2017, the check valves are included internally in the indoor

evaporator section.

4. Slope horizontal lines downward in the direction of the refrigerant flow, ½” (inch)

(13 mm) for every 10 feet (3 meters) of line length.

5. Inverted trap to extend 8 inches above the bottom of the condenser coil. Also,

inverted traps are needed at the top of every gas line riser.

6. Typical trap height is 5 to 7 inches (127 to 178 mm), limit the horizontal section of

the trap to no longer than 8 inches (203 mm).



2.4 Field Piping, Remote Air-Cooled Condenser (Above Evaporator)

Figure 4 Remote Condenser Above Evaporator

NOTES: (Unless otherwise specified by job specific documentation)

1. This is recommended piping. All piping to be per local and/or state codes.

2. Condenser to be no more than 15 feet (4.6 meters) below evaporator.

3. Slope horizontal lines downward in the direction of the refrigerant flow, ½” (13 mm)

for every 10 feet (3 meters) of line length.

4. Inverted trap needed on suction line when compressor is outdoors only.



2.5 Refrigerant Piping Protection

The refrigerant in the system(s) is under high-pressure and this pressure can rapidly

increase if the refrigerant is unintentionally confined (or trapped) between isolation

devices such as service valves, liquid line solenoid valves, expansion valves, etc. If the

ambient temperature surrounding the piping system increases, this may cause the

contained refrigerant pressure to increase to an unacceptable level.

WARNING: This increased pressure can cause piping ruptures,

discharge of refrigerant, pollution, equipment damage, injury or

death.

Use extreme caution when:

1. Installing the piping lines and make certain that these isolation

devices are open to prevent unintended containment

(trapping) of refrigerant.

2. When charging a refrigerant system, do not exceed the

Design Pressure indicated on the unit nameplate.

3. Ensure that pressure has a path to expand when cutting or

making connections, disconnections and piping repairs.

The installing contractor must review the piping system and guard against these possible

areas where the refrigerant could be confined. If the areas cannot be vented and allow

the refrigerant to expanded freely or eliminate pressure increases, the installing contractor

must field supply pressure relief devices.

Additionally, the installing contractor must consult local building and piping codes

regarding installing pressure-safety devices in the required areas of the piping system(s)

that could be unintentionally isolated during field installation, maintenance or repairs of

the refrigerant systems.

After a “Direct Type” Relief Device has discharged once, it should be replaced. The “Direct

Type” Relief Device is designed to reclose automatically at a predetermined pressure, but

reliability of the device to reseal tightly and to operate at the designed pressure cannot

be guaranteed after discharging. Be safe and replace the device after such an

occurrence.

NOTE: Receivers are often installed on condensers. The receiver includes

a safety pressure-device to protect the receiver, but the receiver also

includes service valves which, if closed, will isolate this pressure-safety

device and only protect the receiver. If these valves are closed, the rest of

the piping system would not be protected from unintended refrigerant

pressure increases. Again, the installing contractor must review the piping

system and guard against trapping the refrigerant by installing field

supplied pressure-safety devices.



2.6 Condenser Connection Sizes

NOTICE: Field connections at the indoor evaporator section and

remote condenser will not necessarily be the same as the field pipe

size required. These could vary significantly.

CONDENSER CONNECTION SIZES (Nominal Outside Diameter in inches and millimeters) –

Single Circuit

EC

FAN(S)

Discharge

(Hot Gas) Line Liquid Line

STD

FAN(S)

Discharge


GHRC 011 1/2 ” (12.7) 1/2 ” (12.7) DARC 03 1/2 ” (12.7) 1/2 ” (12.7)

GHRC 018 1/2 ” (12.7) 1/2 ” (12.7) DARC 05 1/2 ” (12.7) 1/2 ” (12.7)

GHRC 021 1-1/8 ”(29) 7/8 ” (20) DARC 06 1-1/8 ”(29) 7/8 ” (20)

GHRC 025 1-1/8 ”(29) 7/8 ” (20) DARC 07 1-1/8 ”(29) 7/8 ” (20)

GHRC 032 1-1/8 ”(29) 7/8 ” (20) DARC 09 1-1/8 ”(29) 7/8 ” (20)

GHRC 039 1-1/8 ”(29) 7/8 ” (20) DARC 11 1-1/8 ”(29) 7/8 ” (20)

GHRC 053 1-1/8 ”(29) 7/8 ” (20) DARC 15 1-1/8 ”(29) 7/8 ” (20)

GHRC 060 1-3/8 ” (35) 7/8 ” (20) DARC 17 1-3/8 ” (35) 7/8 ” (20)

GHRC 074 1-3/8 ” (35) 7/8 ” (20) DARC 21 1-1/8 ”(29) 7/8 ” (20)

CONDENSER CONNECTION SIZES (Nominal Outside Diameter in inches and millimeters) – Dual Circuit

EC

FAN(S)

Discharge


STD

FAN(S)

Discharge


GHRC 025 1-1/8 ”(29) 7/8 ” (20) DARC 07 1-1/8 ”(29) 7/8 ” (20)

GHRC 032 1-1/8 ”(29) 7/8 ” (20) DARC 09 1-1/8 ”(29) 7/8 ” (20)

GHRC 039 1-1/8 ”(29) 7/8 ” (20) DARC 11 1-1/8 ”(29) 7/8 ” (20)

GHRC 053 1-1/8 ”(29) 7/8 ” (20) DARC 15 1-1/8 ”(29) 7/8 ” (20)

GHRC 060 1-3/8 ” (35) 7/8 ” (20) DARC 17 1-3/8 ” (35) 7/8 ” (20)

GHRC 074 1-3/8 ” (35) 7/8 ” (20) DARC 21 1-3/8 ” (35) 7/8 ” (20)

GHRC 084 1-3/8 ” (35) 7/8 ” (20) DARC 24 1-3/8 ” (35) 7/8 ” (20)

GHRC 099 1-3/8 ” (35) 7/8 ” (20) DARC 28 1-3/8 ” (35) 7/8 ” (20)

GHRC 106 1-3/8 ” (35) 7/8 ” (20) DARC 30 1-3/8 ” (35) 7/8 ” (20)

GHRC 130 1-5/8 ” (41) 1-1/8 ”(29) DARC 37 1-5/8 ” (41) 1-1/8 ”(29)

GHRC 141 1-5/8 ” (41) 1-1/8 ”(29) DARC 40 1-5/8 ” (41) 1-1/8 ”(29)

GHRC 155 1-5/8 ” (41) 1-1/8 ”(29) DARC 44 1-5/8 ” (41) 1-1/8 ”(29)

GHRC 176 1-5/8 ” (41) 1-1/8 ”(29) DARC 50 1-5/8 ” (41) 1-1/8 ”(29)

GHRC 201 1-3/8 ” (35) 7/8 ” (20) DARC 57 (DW)1 1-3/8 ” (35) 7/8 ” (20)

GHRC 215 1-3/8 ” (35) 7/8 ” (20) DARC 61 (DW) 1 1-3/8 ” (35) 7/8 ” (20)

GHRC 264 1-5/8 ” (41) 1-1/8 ”(29) DARC 75 (DW) 1 1-5/8 ” (41) 1-1/8 ”(29)

GHRC 281 1-5/8 ” (41) 1-1/8 ”(29) DARC 80 (DW) 1 1-5/8 ” (41) 1-1/8 ”(29)

GHRC 310 1-5/8 ” (41) 1-1/8 ”(29) DARC 88 (DW) 1 1-5/8 ” (41) 1-1/8 ”(29)

1 DW – Double wide condenser



2.7 Leak Testing

NOTICE: With any connection there is risk of leakage. Leakage could

result in damage. Leakage can result from improper installation and/or

practices.

WARNING: No installation is complete until the entire system has

been thoroughly checked for leaks. This includes checking the

refrigerant tubing, flare fittings, pressure controls, Schrader fittings

and compressor Rotolock service valves. Check both the field and

factory connections.

With recent changes in the handling and recovery of refrigerant, it is not permissible to

release refrigerant into the atmosphere. Many leak-test methods recommended in the

past are no longer possible. Current standard practices must be used.

Pressurize the system circuit(s) to 150 PSIG (1034 kPa) using dry nitrogen with a trace

of refrigerant. Check the entire system for leaks with a suitable leak finder (per local code)

including but not limited to all braze joints, caps, fittings and flare nuts on both field and

factory furnished components. After completion of leak testing, release test pressure and

pull a vacuum on the system.

WARNING: Tightening of fittings and valves is the responsibility of

the installing contractor.

2.8 Triple Evacuation and Dehydration Procedure

Data Aire highly recommends a triple evacuation to be carried out on all Data Aire units

to ensure the highest quality moisture removal. Moisture prevents the proper operation of

both the compressor and the refrigeration system. Non-condensable and moisture

reduces service life and increases condensation pressure, which causes abnormally high

discharge temperatures that can degrade the lubricating properties of the oil. The risk of

acid formation is also increased by non-condensable and moisture and this condition can

also lead to copper plating. These phenomena may cause both mechanical and electrical

compressor failure. The typical method for avoiding such problems is to triple evacuate

the system.

It is of the utmost importance that proper system evacuation and leak detection

procedures be employed. Good evacuation includes frequent vacuum pump oil changes

and large diameter, short hose connections to both high and low sides of the system (all



refrigerant lines, suction line, discharge line and liquid line) preferably using copper

tubing, vacuum rated or braided hose.

All valves in the system, solenoid valves, electronic expansion valves, ball valves and

service valves (if the compressor is equipped), need to remain open during the vacuum

procedures and the system must be purged with nitrogen. We recommend using a

solenoid magnet tool to hold the liquid line solenoid valve(s) open during this procedure.

A deep vacuum gauge capable of registering pressure in microns must be attached to the

system on the liquid line service port before the EEV or TXV and should be at the farthest

point in the system for most accurate vacuum readings. A shut-off valve (suggest a

Schrader valve core removal tool) between the system and vacuum pump should be

provided to allow the system pressure to be checked after evacuation.

NOTICE: Do not turn OFF vacuum pump when connected to an

evacuated system before closing shut-off valve.

5.1.1. Tools Needed

• Refrigerant manifold gauge set

NOTE: This manifold gauge set should not be used for the vacuum procedure.

• Vacuum rated hoses

• Nitrogen bottle

• Micron gauge

• Schrader valve core removal tool

• Two-Stage Vacuum Pump(s)

NOTICE: Two pumps will speed up the procedure. One (1) vacuum

pump located normally outside at the condenser and one (1) vacuum

pump is located indoors at the evaporator unit.

The vacuum pump should be connected to the discharge line after the check valve and

the liquid line before the metering device via vacuum rated hoses and Schrader valve

core removal tools. On the high side of the system there is a Schrader port located on the

leaving side of the check valve and on the liquid line before the expansion valve, attach

your Schrader valve core removal tools and hoses here. A micron gauge should be fitted

to the system at the furthest point from the vacuum pump. Install a Schrader valve core

removal tool with shutoff valve before the micron gauge to prevent damage to the micron

gauge during charging.



2.8.1 First Stage Evacuation

1. With the refrigerant valves fully open, open the Schrader core shutoff valve and

evacuate the refrigerant lines, condenser coil and evaporator coil (the complete

refrigerant system) from both, low and high sides of the system to 2000 microns or

less.

2. Close the Schrader core shutoff valve and turn OFF the vacuum pump.

3. Disconnect the vacuum pump hoses from the vacuum and attached them to your

manifold gauges.

4. Connect a vacuum hose from the nitrogen bottle regulator to the manifold gauges

vacuum port and carefully break the vacuum with clean dry nitrogen. Slowly raise

the pressure to approximately 5 PSIG (35 kPa) without contaminating the system.

5. Isolate and hold the nitrogen charge for at least one (20) minutes.

6. Verify no nitrogen leaks.

7. Carefully release the nitrogen charge. Watching the gauge until it reads 5 PSIG

(35 kPa).

2.8.2 Second Stage Evacuation

1. Move the vacuum hoses back to the vacuum pump and restart the pump.

2. Open the Schrader core shutoff valve and evacuate the refrigerant system from

both sides of the system to 1500 micron or less.



manifold gauges.







(35 kPa).

2.8.3 Third Stage Evacuation







4. Conduct a rise test by waiting at least 10 minutes to make sure the micron gauge

reading does not go above 1250 microns.


manifold gauges.







(35 kPa).

2.8.4 Final Evacuation Stage





4. Conduct a rise test by waiting at least 30 minutes to make sure the micron gauge

reading does not go above 500 microns.

5. Conduct a second rise test by waiting at least 30 minutes. If system rises above

750 microns, restart the vacuum pump and evacuate until the system reaches 500

microns.

6. If the vacuum increases more than 750 microns but holds at a higher micron level

(i.e., does not reach atmosphere), this indicates that there is still moisture in the

system, but not a leak. The unit must be put back on the pump for more

dehydration.

7. If the vacuum reaches atmosphere, then the unit has a leak. The leak must be

found and repaired before the unit is put back on the pump for dehydration.

8. After the system has been satisfactorily evacuated the evacuation equipment can

be removed, and the system can be charged with refrigerant.

9. Make sure all service and field installed ball valve are open and remain open for

changing.

10. Ensure all valve cores and caps are re-installed on the Schrader port and on the

Rotolock service valves.



11. After the system has been satisfactorily evacuated the lines can be charged with

refrigerant. See the evaporator section manual for proper charging procedures.



3.0 ELECTRICAL CONNECTIONS

DANGER: Arc flash and electric shock hazard. Risk of electrical

shock could result in injury or death. Disconnect local and remote

facility power source before working within this equipment. Access

should be limited to authorized personnel.

Wear appropriate Personal Protective Equipment per NFPA 70E

before working within unit.

Use voltmeter to make sure facility electrical power is turned OFF

before making any electrical connections. Failure to comply can

cause injury or death.

The Customer must provide earth ground to unit, per NEC, CEC

and local codes, as applicable. Before proceeding with installation,

read all instructions, verify that all the parts are included and check

the nameplate to be sure the voltage matches available utility

power.

WARNING: Data Aire equipment must be connected by a

licensed and qualified electrician. Risk of electrical shock could

result in injury or death. Disconnect all remote electrical facility

power prior to working on the unit. All wiring must conform to local

and national electrical code requirements.

Seal openings around piping and electrical connection to prevent

air leakage. Failure to do so could reduce the unit’s cooling

performance.

NOTICE: Single or dual Disconnect Switch are optional. The

disconnect switch when turned OFF will de-energize the high voltage.

CAUTION: Check the wiring connections in the unit control panel

to ensure they are tight. Screw terminals may become loose in

transit. Tightening of wiring connections is the responsibility of the

installing contractor. Remove all packing and shipping materials

from the unit before installation.



WARNING: Before proceeding with the electrical connections,

make certain that the volts, hertz and phase correspond to that

specified on the unit electrical nameplate. Use copper conductors

only.

3.1 General Electrical Field Wiring Guidelines

• Do not run low voltage or control wires in same conduit, raceway, or chase as

high voltage wiring.

• Upon arrival of the unit inspect all wiring and electrical components for damage,

either visible or concealed before installation.

• Use correctly sized copper wire only and verify that all electrical connections

are tight before turning power “ON”.

• Check all electrical connections periodically and tighten as necessary.

• All field supplied signal cable (if applicable) shall have the following

specifications (Control wires only):

a. Conductors—AWG stranded copper

b. Twisted pair (minimum eight twists per foot)

c. Braided shield or foil shield

d. UL approved temperature rated to 105°C

e. UL approved voltage rated to 600V

f. UV-resistant, oil resistant and moisture-resistant if not provided in

conduit.

g. Plenum rated (As required by national or local codes.)

• All field supplied wires shall have the following guidelines:

a. Conductors - stranded copper and sized per circuit ampacity under NEC

b. UL approved temperature rated to 105°C

c. UL approved voltage rated to 600V

d. UV-resistant, oil resistant and moisture-resistant if not provided in

conduit.

• Wire Ampacity: Please refer to NEC for other wire sizes

3.2 Electrical Service

Before proceeding with the electrical connections, make certain that the volts, hertz, and

phase correspond to that specified on the unit electrical nameplate. Check to be sure the

electrical service provided by the utility company is enough to handle the additional load

imposed by this equipment.

Most units with secondary heat exchangers will require a separate power source and field

provided interconnecting wires.

Remote condensers will typically require one power source.



3.3 Nameplate Ratings

Refer to the unit electrical nameplate for equipment electrical requirements. The unit

nameplate is located inside the electrical control enclosure door. The nameplate includes

Minimum Circuit Ampacity (MCA) also known as wire sizing amps which indicates the

minimum required wire gauge. The Maximum Overcurrent Protection (MOP) device amps

indicates the maximum circuit breaker or fuse size required to protect the system. Max.

Fuse or Max. CKT. BKR. indicates the maximum breaker or fuse size and this information

is used to size the appropriate fuses or a Heating, Air Conditioning, and Refrigeration

(HACR) type circuit breaker. Other protection devices are not allowed based upon the

product UL listing.

The facility main distribution panel which provides electrical service to the Data Aire

equipment must be provided with a manual fused disconnect switch or HACR type circuit

breaker per local and national electrical codes.

3.4 Grounding

The equipment frame must have an uninterrupted true earth ground. The facility earth

ground wire of adequate size must be connected to the ground lug provided inside the

main electrical box.

3.5 Voltage Tolerance

3.5.1 Three Phase Voltage Tolerance

The supply voltage to the unit for three phase operation must be within a voltage tolerance

per table below. The maximum allowable voltage phase to phase imbalance must not

exceed 3%. Voltage imbalance causes high amperage over one or several phases, which

in turn leads to overheating and possible damage. The local utility company should be

contacted for correction of improper line voltage. Deviation from ratings can cause

premature failures and possibly void unit warranty. For three-phase units, only three

power wires and an earth ground are required. A neutral is not required at the unit input

connections.

Three Phase Voltage

Voltage Tolerance

208-230 -5% to +10%

460 ±10%

575-600 ±10%

3.5.2 Single-Phase Voltage Tolerance

The supply voltage to the unit for single phase operation must have a tolerance per table

below. The local utility company should be contacted for correction of improper line

voltage. Deviation from ratings can cause premature failures and possibly void unit

warranty. A neutral is not required at the unit input connections.



Single Phase Voltage

Voltage Tolerance

208-230 -5% to +10%

3.6 Phase

Air-cooled GHRC and GHRU condensers are only available in three-phase and will only

run in one direction.

The air-cooled DARC and DACU condenser may be ordered as single phase or three-

phase. On three-phase models, the individual fan motors are single phase and must be

checked for proper fan rotation direction. Check the operation by placing a momentary

jumper across field terminals of the heat exchanger (refer to unit electrical wiring

diagram). This will temporarily energize the heat exchanger control circuit.

If the fans do not run:

• The head pressure has not exceeded the require discharge pressure. The first

fan (with fan speed control) reacts to head pressure

• Multiple fan units also have a pressure control on the second motor

3.7 Heat Exchanger Auxiliary Control Wiring

The interconnection of auxiliary control wiring for remote heat exchangers (condensers)

requires the connection of two (2) - 18-gauge wires for installations up to 100 feet (30

meters) from the electrical control box of the indoor evaporator to the electrical control

box of the remote heat exchanger. Follow the wiring diagrams for each of these pieces of

equipment.

NOTICE: For installation more than 100 feet (30 meters) and up to 200

feet (61 meters) from the electrical control box of the indoor evaporator

to the electrical control box of the remote heat exchanger, require

heavier gauge wire and a special Parts order for a low holding current

relay is required. Consult Data Aire Parts department for detailed

information. In this case, the installing contractor must follow the

applicable electrical codes to determine the required wire gauge.

Condensing units (i.e., where the compressor(s) are mounted in the remote heat

exchanger) will typically require (4) or more wiring connection points and may require

heavier gauge wire. In this case, the installing contractor must follow the applicable

electrical codes to determine the required wire gauge.

Because of the wide variety of indoor evaporators and remote heat exchangers offer by

Data Aire, the installing contractor must refer to the schematic which is provided inside

the electrical control box of each unit, for the required auxiliary control wiring

interconnection terminal points.



All control wiring on Data Aire equipment is 24 VAC or less. Refer to the wiring diagrams.

Check all wiring connections in the unit control panel to ensure they are tight. Screw

terminals may become loose in transit. Tightening of wiring connections is the

responsibility of the installing contractor.

Figure 5 Typical Remote Heat Exchanger Interconnection Points

Figure 6 Typical Indoor Evaporator Interconnection Points

3.8 Disconnect Switch (Optional)

A thru-door locking disconnect switch is an optional feature which includes a non-

automatic disconnect switch mounted in the high voltage section of the electrical control

box. The operating mechanism prevents access to the high voltage electrical components

until switched to the "OFF" position. The operating mechanism protrudes through the

exterior door and is lockable in the OFF position.

NOTICE: The optional disconnect switch extension shaft and locking

handle are shipped loose to prevent damage during transit and

installation. It is the installing contactors responsibility to install these

components as part of the installation process.



3.9 Wiring Diagrams

Every Data Aire condenser comes with a wiring diagram. These diagrams are ladder type

schematics intended for service personnel. The intent is to allow the technician to

understand the wiring details associated with the electrical components and how they

interface with the controls as well as peripheral equipment (including secondary heat

exchangers).

The wiring diagram in the evaporator will indicate field interface terminals to the

secondary heat exchanger. The internal wiring of the secondary heat exchanger is found

on a separate diagram which can be found on the inside cover of the heat exchanger

electrical box. Both diagram types are also placed inside the shipping/warranty packet

secured in the evaporator section.



4.0 CHARGING

4.1 Fan Speed Control/Fan Cycling

Data Aire air-cooled condensers are equipped with the latest upgrade to control the high

side pressure of the refrigeration system. The fans will modulate based on the refrigerant

head pressure per the following table:

Refrigerant Starting Pressure Full Speed Pressure

R410A 220 PSIG (1517 kPa) 285 PSIG (1956 kPa)

R407C 320 PSIG (2206 kPa) 400 PSIG (2758 kPa)

4.1.1 GHRC and GHCU Condensers

The GHRC and GHCU condensers include variable speed Electronically Commutated

(EC) axial fans. The EC fan speed (i.e., airflow) is modulated by an analog feedback

signal from the head pressure transducer(s) mounted on each refrigeration circuit. The

EC motor varies its speed linearly based on a 0-10V input signal from the head pressure

transducers.

4.1.2 DARC and DACU Condensers

The DARC and DACU condensers include a Fan Speed Control (FSC)which is a single-

phase condenser fan speed controller that is compact, weather-resistant, and durable

speed control for single-phase, PSC motors used in a wide variety of air conditioning

condenser applications.

On single fan DARC and DACU condensers this is the only means of fan speed (i.e.,

airflow) control. Multiple fan condensers are provided with fan speed control on the first

motor (nearest the header). The FSC is pre-programmed at the factory and there is no

need to adjust the unit in the field. The header fan will cycle with the head pressure of the

unit.

When the condenser load exceeds the output capacity of the fan speed controller fan, the

second fan is turned ON to full speed in conjunction with the fan speed-controlled motor

and the fan speed-controlled motor modulates to a new start pressure. This allows the

condenser load to be modulated by the cooling effect of two fans instead of one.

4.2 Ambient Thermostats

On DARC and DACU condensers, additional fan motors (subsequent to the fan speed

control operated motors) on multiple fan heat exchangers are cycled by ambient sensing

thermostats These thermostats have a capillary tube with remote sensing bulb. They

function best with the sensing bulb mounted below the coil, away from exposure to direct

sun light and the bulb in the vertical position. An instruction set comes as part of a

mounting kit that includes a sheet metal bracket, mounting clamps and TEK screws. This



includes directions for field mounting and adjustment. See the table above for the head

pressure settings.

4.2.1 Typical Ambient Thermostats Factory Settings:

Number of Fans

Motor Number 1

Motor Number 2

Motor Number 3

Motor Number 4

Motor Number 5

1 FSC N/A N/A N/A N/A

2 FSC Pressure Control N/A N/A N/A

3 FSC Temperature 50°F (10C) N/A N/A

4 FSC Temperature 75°F (24C) 50°F (10C) N/A

5 FSC Temperature 85°F (29C) 75°F (24C) 50°F (10C)

As the ambient air temperature decreases the capacity of the condenser increases. The

capacity increase is directly proportional to the temperature difference (TD) between the

condensing temperature and the ambient air temperature entering the condenser coil. Air

cooled condensers are required to operate over a wide range of ambient air temperatures.

Provisions must be made to maintain the overall system balance. Air cooled condensers

tend to run at low head pressure when operating in low ambient condition. Low head

pressure can cause poor expansion valve operation and poor system performance.

4.3 Charging with Fan Speed Control

As previously noted, the standard Data Aire air-cooled condensers comes equipped with

fan speed control.

Pease see the evaporator Installation, Operation and Maintenance Manual for required

charging instructions.

NOTICE: Before starting the compressor(s) the crankcase should be

energized for a minimum of 12 hours to reduce the possibility of liquid

slugging on start-up. Failure to energize the crankcase heater could

result in compressor damage.

4.3.1 R410A Charging/Installation Work Procedures

The basic installation work procedures are the same as R407C refrigerant. Since the

working pressure is 1.6 times higher than the conventional refrigerant, some of the piping,

installation and tools are special.

Special Service Equipment

• High pressure manifold gauge set

• High pressure recovery machine

• High pressure recovery tank (DOT 4BA400 or ABW400)



NOTICE: R410A and R407C use Polyol Ester oil (POE) oil that is

prone to absorbing moisture. The system should never be left open to

the atmosphere.

4.4 Flooded Systems

Flooded systems are units having refrigerant circuits with optional liquid receiver and

head pressure control (recommended for low ambient conditions). When the ambient

temperature falls during cold weather, the head pressure control valve will regulate the

flow of refrigerant to ensure nearly constant receiver pressure. The condenser is partially

flooded with liquid refrigerant in cold weather. In warm weather the extra refrigerant is

stored in the receiver.

Data Aire units with optional liquid receivers are either provided within the evaporator

section (depending on the unit size) or shipped loose for field installation. The receiver

includes heaters and thermostat. A thermostat monitors temperature in the receiver and

prevent overheating (overheating of receivers may cause the soft plug to blow and loss

of refrigerant charge).

4.4.1 Charging Flooded Systems

Flooded systems require more refrigerant than condensers with just fan speed control.

With the unit under a vacuum, add liquid refrigerant directly into the receiver. Make sure

all hoses are properly purged.

Pease see the evaporator Installation, Operation and Maintenance Manual for required

charging instructions.



4.5 Low Ambient Receiver Package

Figure 7 Typical Low Ambient Receiver Package

4.5.1 Refrigerant Receiver

The function of a Liquid Refrigerant Receiver is to store liquid refrigerant to provide

continuous flow of liquid refrigerant to the expansion device and to provide storage for the

refrigerant charge during system service or maintenance.

A receiver is required to store refrigerant during warmer weather. The receiver should be

sized so it is at 80 to 82% of capacity while containing the entire system charge. Another

aspect of receivers is that they contain both liquid and gaseous refrigerant at the same

time. By their design, receivers prohibit liquid subcooling from occurring. Without liquid

subcooling the capacity of the system is reduced, and care must be taken in the design

of the liquid line to avoid flashing at the expansion valve.

Flooded systems are an excellent method of providing head pressure control in cold

climates, but they increase initial cost, add complexity to the refrigeration system,

increase installation time, and increase the refrigerant charge. The loss of subcooling

should be recognized. If a flooded system is required, consult the Data Aire prior to

installation.



4.5.2 Receiver Applications

Liquid Refrigerant Receivers are installed in air conditioning and refrigeration systems.

The receiver is installed after the condenser in order to collect the condensed refrigerant

to allow a continuous liquid supply to the expansion device. Liquid receivers are also used

to store the refrigerant charge while the system is pumped down for service or

maintenance.

4.5.3 Selection Guidelines

Receiver storage capacities are based on the liquid occupying no more than 90% of the

internal volume when the temperature of the refrigerant is 90°F (32°C) per ASHRAE

Standard 15-78. Includes within Data Aire’ Product Selector Guide, the low ambient

receiver package has already sized and selected for each Ultra model size.

It is essential that the maximum operating charge be determined, e.g., winter charge in

air cooled condenser having flooded head pressure control, this being much greater than

the normal summer charge.

4.5.4 Receiver Location

The low ambient receiver package can be ordered as a unit-mounted system or as a

shipped loose system. If the low ambient receiver package is unit-mounted system, the

complete package will be factory mounted and wired integral to the air-cooled condenser.

If the low ambient receiver package is shipped loose, it is the responsibility of the installing

contractor to mount the receiver package in a suitable location outdoors, near the air-

cooled condenser, and to connect the piping and electrical wiring, as requirement.

4.5.5 Safety Relief Devices

Data Aire’s low ambient receiver(s) include a suitable fusible plug safety relief device

installed on the receiver housing. The fusible plug is a onetime discharge device and

must be replaced in the event of a receiver over temperature condition. The fusible plug

allows refrigerant to release at a controlled rate and relieves an over-

temperature/pressure condition in the receiver.

See section 2.5 Refrigerant Piping Protection for additional information regarding piping

and receiver over-pressure protection.



4.6 Refrigerant Handling

The use of recovery/recycling units is required by the U.S. Environmental Protection

Agency (EPA) regulations. Technician who service and dispose of air conditioning and

refrigeration equipment must recover the refrigerant instead of venting it to the

atmosphere.

Except for extremely small releases of refrigerant such as what occurs when

disconnecting service hoses (diminutive release), a technician who knowingly releases or

vents refrigerant to the atmosphere is in violation of this regulation. Freon purchases must

be made by certified technicians and have a valid EPA certification card.



5.0 WARRANTY

NOTICE: See separate warranty certificate and registration card that

is supplied with each unit as part of the paperwork package.

6.0 MAINTENANCE

6.1 Service vs. Maintenance

There is a noteworthy distinction between the activities of “maintenance” on one hand

and “service” on the other. Maintenance is a partial or total renewal of an item.

Maintenance reduces the physical age of an item or can even “zero time” the item by

rejuvenating some or all its components. “Service”, as necessary; is to achieve the design

life of the asset. Service is something that we must do, operationally, if we wish to achieve

the components inherent reliability.

6.1.1 General Maintenance Requirements

NOTICE: This maintenance section applies only to the standard units

unless otherwise specified. Many units manufactured by Data Aire

have special or custom features that may not be covered under this

maintenance section.

Data Aire units have been designed to operate continuously, provided they are regularly

maintained and operated within the limitations given in this manual. Each unit should be

included in a routine schedule of daily maintenance checks by the operator/customer,

backed up by regular service inspection and maintenance visits by a suitably qualified

Service Technician. Good maintenance practices are essential to minimizing operation

costs and maximizing product life.

It is entirely the responsibility of the owner or personnel to provide for these regular

maintenance requirements and/or enter into a maintenance agreement with a Data Aire

Authorized Service Company to protect the operation of the unit.

Data Aire recommends the use of trained and authorized service personnel, extended

service contracts and factory-specified replacement parts. Contact Data Aire Service

Department for additional information.

If damage or a system failure occurs due to improper maintenance during the warranty

period, Data Aire shall not be liable for costs incurred to return the unit to satisfactory

condition. See Data Aire warranty for additional details.

The operating life of the equipment can be extended by following a simple preventive

maintenance schedule. This schedule will reduce the possibility of failure of components

and unnecessary malfunction of the system. Although the service technicians must be



thoroughly familiar with the special design features of this equipment before attempting

any service or repair, an experienced technician can perform certain simple maintenance

functions to ensure normal, trouble-free operation.

6.1.2 Maintenance/Inspection Checklist

The maintenance operations detailed in the Maintenance/Inspection Checklist should be

carried out on a regular basis by a suitably qualified Service Technician. It should be

noted that the interval necessary between each ‘minor’ and ‘major’ service can vary

depending on, for instance, application, site conditions and expected operating schedule.

Normally a ‘minor’ service should be carried out every three to six (6) months and a ‘major’

service once a year. It is recommended that Data Aire Service Department be contacted

for recommendations for individual sites.

CAUTION: Personal Protective Equipment is to be used for

maintaining and servicing equipment. Some operations when

servicing or maintaining the unit may require additional assistance

regarding manual handling. This requirement is down to the

discretion of the Service Technician. All maintenance and

servicing must compliance with environmental and safety

regulatory requirements.

CAUTION: Remember do not perform a lift that exceeds your

ability.

WARNING: Turn OFF the disconnect switch to all remote electric

facility power to the unit before servicing or maintenance.

6.2 Cabinet

• Inspect for moisture or any sign of wetness or dripping inside the electrical

enclosure. Determine source of moisture and seal as needed.

• Look for and replace damaged insulating material.

• Check the electrical enclosure door is installed and secured to prevent access

and possible moisture. Repair or replace, as needed.

• Check structural members. Contact our Service Department for any structural

damage.



6.3 Coils

• Coils should be inspected semi-annually and cleaned as required.

• Check for bent or damaged coil fins and repair as necessary. Use a coil fin

comb if the coil fin is bent or deformed and is repairable.

• Check all refrigerant lines for vibration isolation and support as necessary.

• Check all piping for signs of leaks.

• Check for condensation, water spot, piping insulation damage, frost or other

visual sign of wear or damage.

• Periodic inspection of the coil for signs of corrosion and for leaks is

recommended.

• Repair and replacement of the coil and the connecting piping, valves, etc.,

should be performed by a qualified individual(s).

6.3.1 Coil Cleaning

Keeping the outdoor coils clean is an important factor in maintaining peak efficiency,

reliability and long life of the equipment. It is much easier to keep up on frequent cleanings

rather than wait until heavy build up has occurred which may create head pressure

problems with the evaporator units.

• Comply with EPA and OSHA regulations when cleaning.

• Clean the coil in the direction of the airflow so that foreign material will be

washed out of the coil rather than pushed further in.

• Be sure to carefully read and follow the cleaning fluid manufacturer’s

recommendations before using any cleaning fluid.

• Using a brush (non-metallic), clean the coil fins of all debris that will inhibit

airflow. This can also be done with compressed air or with a commercial coil

cleaner.

CAUTION: Caution should be exercised in selecting the cleaning

solution as well as the cleaning equipment. Improper selection

can result in damage to the coil and/or health hazards.

6.3.2 When to Clean

Normal conditions typically dictate cleaning twice a year, spring and fall. On-site or area

conditions such as cottonwood trees, construction, etc., can increase cleaning frequency.

On your standard monthly preventive maintenance schedule, a visual inspection of the

coil is recommended to monitor conditions.

6.3.3 What to Use

The best overall coil cleaner to use is plain water. If the coil has been maintained and

cleaned at regular intervals, water is enough to remove dirt and debris from the fins.



Heavy build up on the exterior of the fins can be removed with a brush. Water pressure

from a garden hose and sprayer usually works well. If a pressure washer is used, make

sure the equipment is set to a lower pressure setting and that the nozzle is set to the fan

spray, not stream. Otherwise, damage to the fins could result. If a cleaner is required, we

recommend a non-acidic type cleaner be used. Acid-type cleaners can be aggressive to

the coil fins as well as surrounding areas. Many sites do not allow the use of acidic

cleaners for environmental reasons.

6.3.4 How to Clean

• The absolute best way to clean coils is from the inside out. This requires

disconnecting the power supply before working on the unit.

• The fan guards and fan blades must be removed to gain access to the coil

surface.

• The sprayer can then be worked across the coil using the water/cleaning

solution, pushing the dirt and debris out the bottom of the coil. Although this

does extend the time involved, the results are well worth it. This method should

be used at least once a year.

• Spraying the coil from the outside repeatedly can push most of the dirt to the

inner section of the fins and continue to restrict air flow. Keep in mind you may

not have the luxury of shutting the unit(s) down for an extended time. A pre-

scheduled shutdown with the operator may be in order.

• If you are using a cleaner along with the spraying process, follow recommended

manufacturer instructions and be sure to rinse the coil thoroughly. Any residue

left on the coil can act as a magnet to dirt.

• Reinstall and secure the fan blades and fan guards after the cleaning is

finished.

• Last, reconnect the power supply to the unit.



6.4 Electrical Control Enclosure

DANGER: The inside of the electrical control enclosure contains

high voltage components and wiring. Access should be limited to

authorized personnel.

Arc flash and electric shock hazard. Risk of electrical shock could

result in injury or death. Disconnect local and remote facility power

source before working within this equipment.

Wear appropriate Personal Protective Equipment per NFPA 70E

before working within unit.

Use voltmeter to make sure facility electrical power is turned OFF

before making any electrical connections. Failure to comply can

cause injury or death.

• Inspect electrical control enclosure box each year or after a short circuit

occurrence.

• If there is an accumulation of dust and dirt, clean out the panelboard by using

a brush, vacuum cleaner, or clean lint-free rags. Avoid blowing dust into circuit

breakers or other components. Do not use a blower or compressed air.

• Visually check all contacts and connections to be certain that they are clean

and secure. Loose and/or contaminated connections increase electrical

resistance which can cause overheating. Such overheating is indicated by

discoloration or flaking of insulation and/or metal parts. Pitting or melting of

connecting surfaces is a sign of arcing due to a loose or otherwise poor

connection. Parts which show evidence of overheating or looseness should be

replaced if damaged. Tighten screws or bolts and nuts to component

manufacturer’s torque specifications.

• Contactors should be kept clean and free from dust and other accumulated

deposits. Dust can be removed from the contactor by blowing with dry air that

is free from lubricants.

• Check for hairline cracks in contactors, transformer, auxiliary contact mounting

bracket, etc.

6.5 Fuse Replacement

WARNING: Turn OFF all electric facility power sources to the unit

before servicing or maintaining this equipment.

• Use lock-out tag-out protection.

• Check replacement fuse to the same size and type as the original fuse. Use

only U.L. and CSA approved fuses.



• Open electrical control box panel.

• Use a voltmeter to confirm there is no power to the unit.

• Remove faulty fuse with fuse puller, fuse removal tool or equal.

• Handle new fuse with care. Do not drop or throw.

• Install new fuse into fuse holder.

• Align fuse end with end of fuse holder clips.

• Turn ON power and verify that operation has been restored.

6.6 Axial Fans with Electronically Commutated Motor

Axial fan(s) with Electronically Commutated (EC) motors are standard equipment on all

gForce GHRC and GHCU condensers. Axial fan(s) with EC motors are maintenance free

and only require visual inspection. The motors are sealed, have maintenance free ball

bearings and permanent lubrication. The only acceptable service is replacement.

If one of the fan internal safeties are triggered, the motor will stop (via electronic controls).

Once the fan is stopped via internal controls, the motor will not restart automatically. The

internal electronic controller must be reset, by cycling the main electrical power supply.

Switched the electrical power to OFF for a minimum of sixty (60) seconds and then turned

back on.

If for any reason the rotor is blocked, the motor will electronically switch off. Before looking

for blockage, make certain to disconnect all electrical power sources to the unit. Once the

blockage is cleared the motor will automatically restart when powered is turned back on.

EC motors have an under-voltage protection. If the electrical power supply voltage falls

below 150 VAC/3Ø (for 208-230 VAC volt motors) 290 VAC/3Ø (for 380-480 VAC motors)

for a minimum of five (5) seconds, the motor will automatically switch off.

If any form of trouble-shooting service is required inside the fan motor terminal box, do

not open the axial fan terminal cover within the first five (5) minutes after turning OFF the

electrical power to the unit.

6.6.1 Electronically Commutated (EC) Fan Troubleshooting

To troubleshoot a non-working EC motor fan that has factory default settings. Follow the

steps in the listed order for best results.

6.6.2 Before you begin

Read the Operating Instructions for detailed instructions and critical safety information

regarding this product.

6.6.3 Tools required for initial troubleshooting

• T20 Torx bit for removing the terminal box cover and ground lug

• 1/8” inch wide slotted screwdriver for the terminal wiring



• AC/DC voltmeter or multimeter

• Continuity meter

• Jumper wire (10VDC rating)

NOTICE: Confirm there are no obstructions to the blade or rotor

assembly.

CAUTION: Do not attempt to remove any obstruction without first

disconnecting the power to the motor. Once the obstruction is

removed the motor will start if powered. Disconnect AC power to

the motor, determine if the blade will spin and rotate freely. Any

blockage or rubbing will cause the motor to stop operation until

the obstruction is removed.

6.6.4 Confirm to Following

• The unit does not have any visible external damage (damaged or missing

blades, bent impeller, missing balance weights, etc.). Do not power up any

module (EC motor/fan blade) that has external damage. The module should be

replaced (contact Data Aire Technical Service at 800-347-2473).

• The unit has not stopped due to operating in temperatures above the recom-

mended operating range. The motor may have been exposed to temperature

above the maximum operating temperature. Under such conditions the motor

will stop and NOT restart automatically. The motor must be reset by

disconnecting the AC power for 3 minutes. This will internally reset the motor.

Reapply the AC power. The motor should run at full speed.

• Correct the reason for the over temperature condition.

6.6.5 If the motor does not operate, proceed to next steps

• Confirm there has been no damage due to water or excessive moisture into the

module’s terminal box.

• Check for signs of water penetration into the motor’s terminal box. Typically,

this can be confirmed by the presence of a white, powdery residue on the inside

or under the terminal box or around the cable gland or threads in any one of

the three ports. Water entry is a result of a loose terminal box cover, loose

sealing nuts on the cable gland, the body of the cable glands not tightened

ensuring a seal between the housing and the cable gland or missing or

improperly installed O-rings. Evidence of water entry may indicate other

damage and the motor module should be replaced.



6.6.6 Confirm Incoming Voltage

• Check the fuses, circuit breakers, motor or any device that controls power to

the motor.

• Confirm the power lead insulation or a loose crimp on a contact tip is not

preventing an electrical connection with the motor terminals.

• Confirm that the correct AC voltage is present on all three phases at the fan

terminals including a good ground connection.

• Check for damage or any short in the power leads to the motor.

• To simplify troubleshooting, all the control wiring at KL3 and alarm relay wiring

KL2 should be labeled, capped or taped and removed from the motor. This will

prevent any external issues from effecting the troubleshooting.

CAUTION: Make sure that the removal of the control and relay

wiring at the motor will not result in any issues in the overall

system operation.

6.6.7 Checking DC Outputs from the Motor

• After the correct AC voltage has been confirmed and with the power still applied

to the module, the low voltage DC outputs at KL3 should have the following

readings:

• 20V and GND = 20VDC

• 10V and GND = 10VDC

• If either of these readings are not present, there probably is a defect internal to

the motor (the module should be replaced).

• If the readings are correct, the fan can be made to operate at full speed by

connecting a jumper wire between +10V and 0-10V PWM.

CAUTION: Turn off the AC power and wait a full five (5) minutes

before making a jumper connection.

• Confirm that the motor operation at full RPM will not cause any safety issues.

• If the motor does not operate there probably is a defect internal to the motor

(the module needs to be replaced).

• If the unit operates normally in these tests, then the likely cause for the motor

not operating is in the control scheme and should be further investigated.

6.6.8 General Note on Control Wiring

• Confirm that the insulation or any crimped tips are not preventing electrical

contact to the motor.

• Confirm that the control wiring is wired properly according to the condenser’s



wiring diagram.

• Confirm the control signal is present at the motor. Measure the signal at the

motor pin or by applying the signal to a motor that is known to operate correctly.

If an analog signal is being sent to the motor, using a multimeter, confirm the

proper voltage is present at the input of the motor by measuring at the spring

contact on the motor at the terminal block.

• Confirm that the PWM or 4-20mA signal is correct using the appropriate

measuring instrument. If the motor still does not operate, remove and replaced.

Typically, problems can be found and corrected by following the listed guidelines. If the

module will still not operate, it should be replaced.



7.0 LINE SIZES

Please refer to the evaporator Installation, Operation, & Maintenance Manuals for

recommended line sizing for air-cooled split systems – up to 200 equivalent feet.



8.0 FREQUENTLY ASKED QUESTIONS (FAQ)

NOTICE:

1. This Frequent Asked Questions (FAQ) section applies only to the

standard units unless specified.

2. This Frequent Asked Questions Section does not apply to units with

special options or special design. This is based on factory settings.

3. Important. This is only for guideline and reference only. Subject to

change without notice. We reserve the right for product design

improvements. Information and data in this section maybe time

sensitive.

4. Please refer to Maintenance section or other sections operating or

setup matters

QUESTIONS ANSWERS

Electrical FAQ Section

1 What is FLA? Full load Amps. Represents the amount of

current a motor is designed to draw at the

rated horsepower.

2 What is MCA? Minimum circuit ampacity. This is used to

help determine the wire size.

3 What is MOP? Maximum Overcurrent Protection device.

This is to help determine the maximum

protective device.

4 What is the input voltage tolerance? In general it is +/- 10% but refer to Electrical

section for more details.

5 Will all units operate at 50 or 60 hertz

power?

No. This depends on the model and options

selected. Consult with Data Aire for details.

6 Does the unit require an electrical

ground?

Yes. All units require a true earth ground.

7 What size field wire size is required to

connect to unit?

Refer to National Electric Code for wire

ampacities size.

8 What is a time delay fuse? Time delay fuses are used in general on

circuits with induction load that have initial

surges of electrical power when the motor

starts. Induction loads may be motor, pump,

etc.

9 What is a fast-acting fuse? Fast acting delay fuses are used in general

on circuits with resistance load that have

initial surges of electrical power when the

resistance load starts. Resistance loads may

be electric heat, humidifier, etc.



QUESTIONS ANSWERS

10 Where is the unit wiring diagram? Each unit is shipped with wiring diagram

inside the electrical control enclosure.

Contact Service Department for replacement

wiring diagram, if necessary.

11 What is the electrical rating for the unit? The electrical ratings are located on the unit

serial name plate label.

12 What is the SCCR rating for the unit? Short Circuit Current Rating (SCCR). Unless

specified, the SCCR rating is 10 kA root

mean square symmetrical, 600 volts

maximum.

Mechanical FAQ Section

13 What piping sizes should be used to

connect split air-cooled Data Aire units?

The best way to get this information is to

review the Installation, Operation and

Maintenance Manual that comes with the

unit. If you cannot locate the manuals, they

are also available on this Data Aire website

in the Download Literature section.

http://www.dataaire.com.

14 Are traps required in refrigerant piping

run with air-cooled units?

Yes, trapping is required on both the

discharge and/or suction lines. See section

2.0 for more information.

http://www.dataaire.com/



9.0 CONTACT DATA AIRE

Address:

Data Aire, Inc.

230 West Blueridge Avenue

Orange, CA 92865

Telephone: 714-921-6000 or 800-347-2473

E-mail:

[email protected]

[email protected]

[email protected]

Fax:

(714) 921-6010 Main

(714) 921-6011 Engineering

(714) 921-6022 Parts Sales

Web Site: www.dataaire.com

Job/Unit Information:

Data Aire Job Number:

Condenser Model Number:

Condenser Serial Number:

Date Installed:

Installing Contractor:

mailto:[email protected]



http://www.dataaire.com/



INDEX

Acid-Type Coil Cleaner ............................ 41

Air ............................................................ 28

Ambient.................................................... 33

Ambient Sensing Thermostats ................. 32

Arc Flash .................................................. 26

Clearance .................................................. 8

Coil ...................................................... 6, 40

Coil Cleaning ........................................... 40

Coil Cleaning Solution .............................. 40

Concrete Pads ......................................... 10

Condensing unit ....................................... 29

Contact Data Aire ............................... 38, 50

Discharge Lines ....................................... 14

Disconnect Switch .............. 5, 26, 28, 30, 39

Electrical .................................................. 27

Electrical Control Enclosure ..................... 42

Electrical Field Wiring ............................... 27

Electronically Commutated (EC) ........ 32, 43

Equipment Damage ................................. 11

Evacuation ................................... 21, 22, 24

External damage ...................................... 44

External Damage ....................................... 5

Fan Speed Control (FSC) ........................ 32

Fast-Acting Fuse ...................................... 48

Flooded System ................................. 34, 35

Freezing .................................................... 6

Frequent Asked Questions (FAQ) ............48

Full Load Amps (FLA) ..............................48

Fuse ................................................... 28, 42

Fusible Safety Relief Device .....................36

Ground ............................. 26, 28, 43, 45, 48

Heat Exchanger ........................................ 8

Inspect ................................................... 5, 8

Inspection .................................................. 5

Installation .......................................... 11, 13

Installation, Operation and Maintenance

Manual (IOM) ......................... 2, 6, 33, 34

Internal damage ........................................ 5

Liquid line .................................................15

Liquid Refrigerant Receiver ......................35

Locating .................................................... 8

Loose items ............................................... 5

Low Ambient Receiver Package ...............35

Maintenance ...................................... 38, 48

Maintenance/Inspection Checklist ............39

Manifold Gauge Set..................................33

Maximum Overcurrent Protection (MOP) .28,

48

Minimum Circuit Ampacity (MCA) ....... 28, 48



Modulate .................................................. 32

Multimeter ................................................ 44

National Electrical Code (NEC) ................ 11

Obstruction ................................................ 8

Optional ................................................... 34

Paperwork .................................................. 6

Personal Protective Equipment (PPE) ..... 11,

26, 39, 42

Piping8, 9, 11, 12, 13, 14, 15, 18, 26, 33, 36,

40

Piping Sizes ............................................. 49

Preventive Maintenance Schedule ........... 38

Receiver................................................... 36

Receivers ................................................. 36

Recommended gas velocity ..................... 14

Recovery Machine ................................... 33

Recovery Tank ......................................... 33

Refrigerant 13, 14, 18, 21, 23, 24, 33, 34, 37

Refrigerant Flow ................................. 16, 17

Refrigerant Head Pressure ...................... 32

Refrigerant Piping .................................... 13

Refrigerant Valve ..................................... 23

Remote .................................... 8, 16, 17, 27

Rigging .....................................................10

SCCR .......................................................49

Short Circuiting .......................................... 9

Sizing Refrigerant Lines. ..........................13

Special Service Equipment .......................33

Start-up sheet............................................ 6

Storage .................................................. 6, 7

Support ....................................................10

Time Delay Fuse ......................................48

Transportation Damage ............................. 5

Traps .................................................. 16, 49

Troubleshoot ............................................43

Under-Voltage Protection .........................43

Velocity .............................................. 14, 15

Vibration .................................................... 9

Voltage ............................................... 12, 28

Voltage Tolerance .............................. 28, 48

Warranty .............................................. 6, 11

Wiring .... 5, 11, 26, 27, 29, 30, 36, 42, 43, 45

Wiring Diagram ............ 6, 12, 29, 31, 46, 49

NOTES


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