hybo - hydraulic interface unit - honeywell - hydraulic interface unit ... for device disconnection...

Honeywell Subject to change EN1H-2615GE25 R0914

5009

3594

-001

Rev

. B

HyBo - Hydraulic Interface UnitAMBIENT HEATING AND DOMESTIC HOT WATER PRODUCTION FOR

CENTRAL HEATING SYSTEM UNIT CODE EHIU1

INSTALLATION, COMMISSIONING AND OPERATING INSTRUCTIONS

Unit as delivered

Unit completed with optional components

ContentsContents ..................................................................................................1Safety Guidelines ....................................................................................2General Warnings ...................................................................................2Before Installation ...................................................................................2Wiring .......................................................................................................2Description ..............................................................................................2Dimensions and details .........................................................................3Hydraulic diagram ...................................................................................3Technical data .........................................................................................3Mounting ..................................................................................................4External casing dismounting-mounting ...............................................4Wall mounting .........................................................................................4Fixing electrical cables ...........................................................................5Electrical connections ............................................................................5Activation .................................................................................................5Display and keypad ................................................................................5Programming for Technician .................................................................6Deactivation of unit functions ...............................................................6Unit electrical disconnection .................................................................6Control and regulations .........................................................................6DHW temperature ....................................................................................6Spare parts ..............................................................................................7Metering ...................................................................................................7Backflow preventer .................................................................................7Unit Components ....................................................................................7

HYBO - HYDRAULIC INTERFACE UNIT

EN1H-2615GE25 R0914 2 Honeywell Subject to change

Safety GuidelinesGeneral Warnings

If installation instructions are followed, required water quality is provided and installed space is controlled. After 6 month of usage it is recommended just to clean the strainer.

Before Installation

1. Unpack and remove the EHIU1 from carton. 2. Check the equipment and report any damage to a Honeywell represen-

tative.3. The unit must be fixed to the wall by using no. 4 Ø 8 mm anchors (not

included).NOTE: Anchoring materials must be suitable for the mounting surface which must comply with all local codes.

Wiring

The unit needs a 230V 50Hz electrical connection. If the unit is installed inside the apartment, power supply must be sourced from the apartment itself. On the contrary, if the unit is installed in common locals, it is supplied by a common central line.

Description

WARNINGHoneywell Hydraulic Interface Unit must be installed by qualified personnel in accordance with the applicable regulations and IEE Regulations.The end user is not authorized to work on the unit. Any contractual or extra-contractual responsibilities of the Constructor is excluded for damages to people, animals or things caused by an improper use or by installation mistakes or special maintenance as well as by not qual-ified personnel intervention and, in general, by non-fulfilment of what indicated in installation, commissioning and operating instructions.Honeywell take no responsibility for difficulties arising from failure to observe these instructions. Please read this manual before under-taking the installation.Upon completion of the installation, please hand these instructions to the user. These instructions should be retained for future reference.

WARNINGHoneywell EHIU1 is a wall hanging HIU with optional external casing. If installed without external casing it must be placed in a protected space not accessible by unqualified people. It has the capability to provide the central heating and to produce instantaneous domestic hot water. Hot water is always produced in priority to the heating service. The maximum temperature of the domestic hot water may be adjusted by accessing the digital display unit which is positioned within the casing.

WARNINGRisk of scalding!Even in normal operating conditions unit reaches high temperatures that can cause burns. It is risky to touch the pipes without protection.

WARNINGRisk of electric shock or equipment damage!Before installation and any maintenance operation disconnect elec-trical supply.For device disconnection use a circuit breaker or a plug.

Do not reconnect the power supply until you have completed the installation. In general before any operation disconnect power supply.Device doesn´t requires any maintenance.

WARNINGThe Installer has to check that unit fixing systems are suitable to mounting wall.This equipment must only be used for the purpose for which it was intended, improper use may be hazardous.

CAUTIONM-Bus and electrical supply cables must be separated in order to avoid any interferences.

CAUTIONAll electrical connection must be compliant with local laws, rules and regulations.A suitable room thermostat clock/room thermostat with 230V 50 Hz output must be provided and connected by the installer. The elec-tronic board is protected by a 1 Ampere fuse.

CAUTIONNotices about domestic hot waterIf the supply water hardness exceeds 15°f (dGH) it is recommended to install a suitable scale reducing device (softener). In order to reduce scale forming inside heat exchanger, set the sanitary water temperature to a value that is slightly superior compared to the oper-ating one.pH value should be between 7 ~ 9.


Honeywell Subject to change 3 EN1H-2615GE25 R0914

Dimensions and details

Hydraulic diagram

Technical data

* Physical limit for quite operation. Real max flow depends on target system parameters.

1. Room thermostat 230V AC 2. Power supply 230V AC

1 Manual isolation valve2 Plate heat exchanger3 Manual air vent4 Modulating motorized valve for DHW control5 Static balancing valve6 DHW sensor7 On/Off motorized valve for heating control8 DHW flow sensor9 Filter10 Pressure control probe holder11 Blind pipe for water meter12 Heat meter temperature probe holder13 Blind pipe for water meter14 Control panel

A Return to centralized systemB Supply from centralized systemC Cold sanitary water inletD Hot sanitary water outletE Cold sanitary water outletF Heating outlet to apartementG Heating return from apartement

Heating CircuitKind of fluid Water VDI2035

max. glycol 30%Max. temperature 90°CMax. operating pressure 6 barDomestic water lineKind of fluid Water max hardness 15dGH and pH 7-9Max.temperature 30°CMax. operating pressure 6 barMax. flow rate 1.5 m3/hNominal flow rate 1.25 m3/hDHW / Exchanger Secondary CircuitKind of fluid Water max hardness 15dGH and pH 7-9Max. setting temperature 60°CMax. operating pressure 6 barDHW production flow activation 3.5 l/min DHW production flow deactivation

2.5 l/min

Display approximation 1°CMax. flow rate 22l/min*PipesMaterial CopperSize ∅18 mmHydraulic connectionsMaterial BrassSize G 3/4" MTemplate boxMaterial Galvanized sheet 1 mmCasing and doorMaterial pickling sheet 1 mmColour RAL 9010Electrical supplyVoltage 230V +/- 10%Frequency 50 HzMax. power consumption 10WIP protection 20Ambient operationInstallation IndoorAmbient temperature range 5-55°CHumidity range 25-85%Motorized ValveOperation time ON/OFF type 15 secOperation time Modulating type 15 sec



The figures/table below indicates kv values of the unit.

kv (m3/h with Δp = 100 kPa = 1 bar)

*kvs values refer to the static balancing valve setted at 5.9 (pre-setting) and at 1.5 for the DPCVThe general equation for calculating pressure drop, knowing flow rate value is the following

Δp [bar] = (Q [m3/h] / kv)2

MountingExternal casing dismounting-mountingBefore installation the external casing must be removed as indicated in the image. The external casing is a unique piece placed on the carrying struc-ture: it is fixed by 2 screws on superior part and 2 screws on inferior part. After external casing removal and having placed it safely, it is possible to proceed with the hydraulic unit installation.

Wall mountingThe unit has to be installed indoors in suitable ambient conditions (see tech-nical specification on page 3).The installer has to individuate the most suitable wall according to weight and overall dimensions indicated on page 3.For fixing unit it is necessary to use no. 4 Ø 8 mm anchors (not included), they have to be suitable to the chosen wall for installation. The position has to be compliant with hydraulic connections.It is suggested to leave a free space of 10cm on left side for an easier access to the strainer

Circuit Heat exchanger type24P 40P

no meter no meterA-B primary heat

exchanger1.76mc/h 1.88mc/h

Circuit Balancing typeStatic DPCV

no meter no meter(B-F) + (G-A) heating 2.68 mc/h 2.18 mc/h

Circuit

C-D hot water 1.83 mc/hC-E cold water 5.06 mc/h

CAUTIONThe indicated kv are valid for water without glycol.

CAUTIONBefore installing the unit, the centralised and apartment systems must be cleansed and flushed to avoid fouling of the unit with impurities or debris from the pipe work installation procedures. The presence of impurities in pipes can be the reason for unsatisfactory working and can cause possible damages to unit components. Therefore it is very important to carefully flush pipes before installing.Connecting the unit to centralized distribution system with interception manual valves (included) is strongly recommended. Thanks to this the unit could be quickly and without particular user unease de-touched from centralized plant in case of special mainte-nance.Take care not to damage or break the connection seals. Pipe connec-tion torque must not exceed 50 Nm.



Fixing electrical cablesPower electrical and ambient thermostat cables enter the unit thanks to cable glands on unit bottom side. Cable maximum diameter: 8 mm.

Cable terminals must be connected to related board inside the electrical box ( see “electrical connections”).

Electrical connections

Supply Cable (L- - N)3 x 1.5 mm2 cable heat resistance;• line,• neutral, blue sheathing• ground, yellow/green sheathingRoom thermostat (T.A)2 x 1.5 mm2 cable heat resistance.This device must give power to “TA” terminal ends in order to power relay coil positioned inside the electric board.Working logic:• 230V “TA” ends voltage: heating function activation (opened valve)• 0V “TA” ends voltage: heating function deactivation (closed valve)

1. Fuse2. Bipolar switch3. Cable gland

ActivationOnce the installation is completed and after checking that all electric and hydraulic connections have been correctly made, it is possible to activate the unit by moving the bipolar switch on electric box to ON position.

Display and keypad

CAUTIONBetween cable glands and electrical box, cables must be positioned in a way that avoids contact with copper pipes. Please use the specific cable glands supplied.

CAUTIONBefore carrying out electrical connections, please read general instructions at page 1.

WARNINGIsolate the unit from the electrical supply before removing the cover of the electrical box.

WARNINGTHIS APPLIANCE MUST BE GROUNDED.Ground wire connection must be secured against releasing. The elec-trical installation must only carried out by competent persons in accor-dance with the current edition of the IEE regulations.

The LED lights on the right side of the digital display indicate the actions of the hot water temperature control system.Red LED = Valve opening/open - the temperature of the hot water is required to be raisedGreen LED = Valve closing/closed - the temperature of the hot water is required to be reducedIn order to turn it off, press the “ON/OFF” button: if the equipment is still powered, the “OFF” sign will appear.When the unit is electrically powered,the installed soft-ware version is shown on the display for a few seconds.

Immediately after, if the equipment was off the last time it was powered (default condition at the time of purchase),the “OFF” message appears. In order to turn it on, press the “D”-ON/OFF button once.

The display shows the temperature detected by the sensor which is placed at the outlet of the domestic hot water delivered to the dwelling. When a hot water tap is opened, the unit will start automatically.



Programming for TechnicianAccess to programming menu. When digital display shows “OFF”, push simultaneously “A” and “B” buttons. When display shows “P1” release buttons. ”A and “B” buttons scroll main menu and increase or decrease value in under menu. “ENTER” button goes into sub menu and save data itself.

(*) Anti-burns function intervenes when the sensor, positioned on hot sanitary water delivery, feels a temperature superior to “set-point + P3 value”. In this condition the modulating 2-way valve, positioned on heat exchanger primary, is forced to complete closure and interrupts the erogation of thermal energy. When temperature goes down to “set-point + P3 value”, the system automat-ically starts normal production of sanitary hot water again.(**) When warmed heat exchanger function is activated (P5 =0) the primary circuit of the heat exchanger is constantly maintained in temperature (even in absence of sanitary drawing) thanks to the passage of a small quantity of hot water in primary circuit. This function can be activated when the unit is away from distribution columns to reduce the DHW production delay time.

Deactivation of unit functionsDuring summer time, in order to deactivate heating function you have to set the minimum temperature value on room thermostat or selecting “OFF” mode, if present. Regarding sanitary function, excluding all takings is suffi-cient and the module will automatically stop any energy inflow from central-ized plant (if the warmed heat exchanger is deactivated). Besides, pressing “ON/OFF” button on keypad is possible to deactivate hydraulic unit functions. On display you find “OFF” and all functions are deactivated:both motorized valves are on complete closing

Unit electrical disconnectionTo disconnect the unit from electrical network follow these instructions:1. Electrically disconnect ambient thermostat2. Press “ON/OFF” button on keypad3. Wait for about 30 sec. in order to give time to motorized valves to close.4. Check that the motorized valves are in closed position by checking di-

rectional arrow position5. Move the bi-polar switch on electrical box to OFF position

Control and regulationsDHW temperatureWhen the unit is activated and the display shows the temperature detected by the probe, it is possible to adjust the set supply temperature of the hot sanitary water. Use the buttons on the keypad:

Main menu Under menu FunctionP1 X.X (sec) Where „X.X“ indicates time of sampling

temperature.Regulation range 1.0 ³ 10.0 sec(default 1.0 sec) for 24 plates heat exchanger and 1.3 sec for 40 plates heat exchanger

P2 X (sec) Where „X“ indicates delay time ordered to activation of sanitary hot water production by flow meter signal (eco function)Regulation range: 0 ³ 5 sec.(default 0 sec)

P3 XX (°C) Where „XX“ indicates the Δ temperature to be added to the setpoint to obtain the maximum permitted temperature beyond which the sanitary valve closes. Anti-burns function*.Regulation range 5 ³ 50°C(default 5°C)

P4 XX (sec) Where „XX“ indicates delay time ordered to anti burns function intervention.Regulation range 0 30 sec(default 0 sec)

P5 X Where „X“ is a Boolean variable that can be:0 = warmed heat exchanger function acti-vated **1 = warmed heat exchanger function deacti-vated(default 1)

CAUTIONThe anti-burns function helps to avoid supply of hot sanitary water with dangerous temperatures. Installing devices for thermal safety for sanitary uses to be placed below the unit is advised.If the hot sanitary water temperature sensor is damaged or not connected the display shows the allarm “ALt”. The modulating valve of the plated exchanger primary circuit is forced to closing; the flashing "AL t" is displayed. When the damage is restored the unit start again with its normal functioning.

WARNINGElectrical power coming from ambient thermostat is NOT inter-rupted by bi-polar switch. In order to complete disconnect the hydraulic unit form electrical power interrupt ambient thermo-stat power.

CAUTIONA disconnection from electric network made without operating as described above does not grant the complete hydraulic isolation of the module from the whole plant. As a consequence the module could still take and regulate heat even though not requested.

Press the “A” button to decrease the temperature value. Press the “B” button to increase the temperature value. The display will show a value ranging from 0 to 10. 0 corresponds to approximately 40°C, 10 corre-sponds to approximately 60°C. Then, press “ENTER” to accept the value.



BalancingThe unit is equipped with a static balancing valve. In addition can be added the diaphragm for differential pressure balancing (not included with HIU).A probe is already installed on pipe "f" to facilitate the installation.See in picture below the suggest installation.

MeteringThe unit can be equipped with energy and water meters. Stub pieces are arranged on the unit to facilitate the installation:• remove the stub piece• install the meter (max torque 50Nm)

- original sealings installed with stub pieces must be replaced- When installing display of ultrasonic heatmeter take care to use not too

long screws to avoid touching the pipe under• connect temperature sensors in the pre-arranged probesHeatmeter 1 will measure the total energy consumtpion both for heating and domestic hot water production.Heatmeter 2 will measure the energy consumption of apartment heating only.Energy consumption only for domestic hot water production can be measured as difference between heatmeter 1 and heatmeter 2.

Backflow preventerAs required by regulations insert a backflow preventer on the domestic cold water inlet.Backflow preventer is not included with the unit.

CAUTIONSharp edges could cause injury.The Heat meter should be installed before the impulse copper tube of diaphragm unit for dynamic balancing. Don't bend the tube to the sharp angles - it may cause breaks.Before installation of any meter take out the old washer, clean the sealing surface and use new washer (not included).

Unit Components

a b c d e f g

Heat exchanger (insulated)

Strainer (behind heat exchanger)

Temperature sensor

Place for heatmeter 1

Place for water meter

Heatmeter 1 temperature probe

Passage for electric connections

Heatmeter 2 temperature probeStatic balancing valve

ON/OFF motorized valve

Modulating motorized valve

Pipes (insulated)

Support for ultrasonic heatmeters

Cabinet with door

Place for heatmeter 2

Flow meter Air valves Electronic controller

Stop valves

(pipe probe for upgrade to

for sanitary water

automatic)


Environmental and Combustion ControlsHoneywell GmbH

Hardhofweg

74821 MOSBACH

GERMANY

Phone: +49 (6261) 810

Fax: +49 (6261) 81393

http://ecc.emea.honeywell.com

Manufactured for and on behalf of the Environmental and Combu-stion Controls Division of Honeywell Technologies Sàrl, Z.A. La Pièce 16, 1180 Rolle, Switzerland or its Authorized Representative.

EN1H-2615GE25 R0914Subject to change without notice© 2014 Honeywell International Inc.

hybo - hydraulic interface unit - honeywell - hydraulic interface unit ... for device disconnection...

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