< loop water controller >

< Loop Water Controller >

Updated by:Yap Boon ThiamTechnical EngineerEmail: [email protected]: 9/5/2012

Controller Layout

Hardware Outlook

1. Features

2. Protections

3. Error Code

4. Operations

Contents

1.1 System On/Off1.2 Pump Control Function1.3 Heat Rejection & Addition Output Stages1.4 Outdoor Air Preset

1.5 Pre-cool / Pre-heat Protection

Features

1.1 System On/Off

• To Using remote On/Off switch (S1): i) Standard Switch (without Smart Manager) ii) Smart Manager

• To start or stop the operation of the LWC.

The LWC shall function as: i) System On if the remote On/Off switch (S1) is in closed circuit. ii) System Off if the remote On/Off switch (S1) is in opened circuit.

Features

1.2 Pump Control Function

• Lead pump on

Features

(a) Automatic

• Allows 2 loop circulating pumps with manual or auto lead lag control where operation is interchangeable.

Water flow switch10sec 15sec

Alarm

Lag pump on10sec

Water flow switch15sec

Alarm Off

(b) Manual

• Only one pump can operate.

• If the water problem is verified and fixed, user can reset the remote

switch (S2) and the pump will resume operation. Alternatively it can

be reset by power supply.

1.3 Heat Rejection & Addition Output Stages

• Total 12 sets of data output can be pre-set as heat addition or heat rejection stages.

• The heat rejection and heat addition temperature setting shall be distributed in sequence and continuous (difference by 1ºC).

Features

1.4 Outdoor Air Reset

• The heat addition ON / OFF limit setting of the system is able to be increased in respond to a drop in the OD air temperature

Features

1.5 Pre heat & Pre Cool Protection

• To provide protection when the temperature exceeding the too high / low temperature (when system is OFF)

Note: Pre-cool/heat temperature differential: 5ºC (fixed)

2.1 Low / Too Low Temperature

2.2 High / Too High Temperature

2.3 Loss of Flow

2.4 Sensor Error

Protections

Protections

2.1 Low / Too Low Temperature

System On

Sound Alarm

System Continue Running

Yes System OffSound Alarm

TW ≤ TLW ?No

TW ≤ TTLW ?

Yes

No

Note:

TW = Water Temp

TLW = Low Water Temp

TTLW = Too Low Water Temp

Protections

2.2 High / Too High Temperature

System On

Sound Alarm

System Continue Running

Yes System OffSound Alarm

TW ≥ TLW ?No

TW ≥ TTLW ?

Yes

No

Note:

TW = Water Temp

TLW = Low Water Temp

TTLW = Too Low Water Temp

Protections

2.3 Loss of Flow

10s after System On

Sound Alarm

Lead Pump Off

Lag Pump On

Error System OffSound Alarm

Check water

flow for 15s

Normal

Check water

flow for 15s

Error

Normal

Protections

2.4 Sensor Error

• If either the Water Supply sensor or OD Air sensor or both of them gives an error signal during the system operates, the alarm will activate 20 times per minute.

• The unit will be Off. All heat rejection and heat addition stages shall be shut down.

3.1 Error Descriptions

Error Code

3.1 Error Descriptions

Error Code

Priority Error Description LCD Panel Code Reset Setting System Status

1 Water Sensor Error Water Sensor ERR Manual Shut down

2 Low Water Temperature Water Low Temp Automatic Running

3 High Water Temperature Water High Temp Automatic Running

4 Water Pump 1 Flow Failure Flow Error Pump1 Automatic

5 Water Pump 2 Flow Failure Flow Error Pump2 Automatic

6Too High Water Temperature Shutdown

Hi Temp Shutdown Automatic Shut down

7Too Low Water Temperature Shutdown

Lo Temp Shutdown Automatic Shut down

8 Outdoor Sensor Failure OD Sensor ERR Manual Shut down

Both Happen, Shut down

4.1 LCD Panel Descriptions

4.2 Main Menu

4.2.1 Status

4.2.2 Setting

4.2.3 Test

4.2.4 Error

4.3 Operation Limits

4.4 Default

Protections

4.1 LCD Panel Descriptions

Operations

By pressing the Button ESC

Main Menu

Error

Test

Status

Setting

Operations

4.2 Main Menu

ESC

Status

Output Stage

Temp

Pump

Water Flow: Yes (No)

Pump Run Time

1# : On (Off)

1# : Cool (Heat) On (Off)

2# : On (Off)

Water Temp: xxx°C (°F)OD Temp: xxx°C (°F)

On : xxx Off : xxx°C (°F)

On : xxx Off : xxx°C (°F)2# : Cool (Heat) On (Off)

(3-12#): Unused Pump1: xxhr Pump2: xxhr

4.2.1 Status

Operations

• Password Protected

• During power ON, the ‘Setting’ can only be viewed.

• The system MUST be turned OFF in order to change the Setting parameters.

Operations

4.2.2 Setting

ESC

Setting

ODA reset Enable (Disable)

Temp

Pump

Output Config

Other

Mode: Auto (Manual) Lead Pump: 1# (2#)

Switch Cycle: xxxhr Pump Switch Check Time: xxxs

Reset Run Time Min Run TM: xxxs

ESC

4.2.2.1 Pump

Operations

• Mode: - Auto >The lead lag cycle operation is activated - Manual >Only the lead pump is activated

• Lead Pump :1# / 2# >The 1st or 2nd pump can be set as lead pump in the operation

• Switch Cycle: xxxhr>The time for a pump to switch over to another pump

• Pump Switch Check Time: >The time to check the water flow after pump is On

• Reset Run Time:>To reset the record of the total pump run time

• Min Run TM: xxxs>The minimum time required for a pump to operate

4.2.2.1 Pump

Operations

ESC

Setting


Temp

Pump

Output Config

Other

Cool Stage: xx

Heat Stage: xx

Interstage Time: xxs

ESC

Operations

4.2.2.2 Output Config

• Cool Stage:>To set the number of cool stage for the system operation

• Heat Stage:>To set the number of heat stage for the system operation

• Interstage Time: xxs>The delay time between every stages to start operation

4.2.2.2 Output Config

Operations

ESC

Setting


Temp

Pump Output Config

Other

Water Temp Alarm

Temp Hysterysis

High TMP: xxx°C (°F)

Too Hi TMP: xxx°C (°F)

Low TMP: xxx°C (°F)

Too Low TMP: xxx°C (°F)

OD reset TMP: xxx°C (°F)

ESCSet Stage Temp

4.2.2.3 Temp

Operations

(a) Water Temp Alarm

• High TMP: xxx°C / °F>Water temperature in warning temperature (system still on)

• Too Hi TMP: xxx°C / °F>Maximum allowable water temperature before system shut off

• Low TMP: xxx°C / °F>Water temperature in warning temperature (system still on)

• Too Low TMP: xxx°C / °F>Minimum allowable water temperature before system shut off

• ODresetTMP: xxx°C / °F>The temperature range for heat addition On/Off stages that

responding to the OD air temperature

4.2.2.3 Temp

Operations

ESC

Setting


Temp

Pump Output Config

Other

Water Temp Alarm

Temp Hysterysis

Cool Stage: xxx°C (°F)

Heat Stage: xxx°C (°F)

ESC

Set Stage Temp

4.2.2.3 Temp

Operations

(b) Temp Hysterysis

• Cool Stage: xxx°C / °F>The temperature difference between ON and OFF of a Cool

Stage

• Heat Stage: xxx°C / °F>The temperature difference between ON and OFF of a Heat

Stage

4.2.2.3 Temp

Operations

ESC

Setting


Temp

Pump Output Config

Other

Water Temp Alarm

Temp Hysterysis

Heat Rej: xxx°C (°F)

Heat Add: xxx°C (°F)

ESC

Set Stage Temp

4.2.2.3 Temp

Operations

(c) Set Stage Temp

• Heat Rej: xxx°C / °F>The first cool stage temperature setting

• Heat Add: xxx°C / °F>The first heat stage temperature setting

4.2.2.3 Temp

Operations

ESC

Setting


Temp

Pump

Output Config

Other

4.2.2.4 ODA reset Enable

Operations

Setting


Temp

Pump

Output Config

Other

New Password: xxxx

Temp Unit: °C (°F)

Key Back Light: Enable (Disable)

LCD Back Light: Enable (Disable)

Buzzer: Enable (Disable)

Set Date: DD-MM-YY

Set Time: hh:mm:ss

ESC

ESC

4.2.2.5 Others

Operations

New Password: xxxx>To set new password. Default password = 8888

• Temp Unit: °C / °F>To set the temperature unit

• Key Back Light: Enable / Disable>To enable / disable the LCD panel key back light

• LCD Back Light: Enable / Disable>To enable / disable LCD panel screen back light

• Buzzer: Enable / Disable>To enable / disable the buzzer on LCD panel

• Set Date: DD-MM-YY>To set the date for the LWC system

• Set Time: hh:mm:ss>To set the time for the LWC system

4.2.2.5 Others

Operations

Test

1#Pump: On (Off)2#Pump: On (Off)1#Stage: On (Off)2#Stage: On (Off)3#Stage: On (Off)4#Stage: On (Off)5#Stage: On (Off)6#Stage: On (Off)7#Stage: On (Off)8#Stage: On (Off)9#Stage: On (Off)10#Stage: On (Off)11#Stage: On (Off)12#Stage: On (Off)Buzzer: On (Off)Alarm Out: On (Off)

ESC

4.2.3 Test

Operations

• Must be operated only when the system is OFF or dry run

• To check the function ability of the system

• The display returns to default menu after 3 minutes when user stop operating the system or by pressing ESC button

Error

History

Delete

ESC

4.2.4 Error

Operations

• To store the error records of the system

• Maximum 10 errors can be recorded or check

• Error records can be deleted

Lower Limit

DefaultUpper Limit

Lower Limit

DefaultUpper Limit

1°C 3°C 5°C 2°F 6°F 10°F6°C 13°C 18°C 42°F 55°F 64°F5°C 10°C 17°C 41°F 50°F 62°F

30°C 40°C 44°C 86°F 104°F 111°F31°C 43°C 45°C 87°F 109°F 113°F1°C 5°C 5°C 2°F 10°F 10°F

Heating Stage 7°C 20°C 43°C 44°F 64°F 109°FCooling Stage 7°C 30°C 43°C 44°F 86°F 109°F

8hr

Stage Temperature

30s

NA

12

60s

168hrAuto

40s

80

15s 15s

410s

0

15sTemp Unit (°C) Temp unit (°F)

Upper LimitLower Limit Default

200s

12

240s

NA88hr

Heat Add/Reject Interstage Timer

Number of heat rejection stage

Pump minimum run time

Pump: Auto/Manual

OD Air Reset Temperature

High Temperature

Low Temperature

Number of heat addition stage

Water flow detection check time after 1st pump On (Pump switch check time)

Pump switch cycle (Auto)

Description

Too High Temperature (emergency shutdown)

Too Low Temperature (emergency shutdown)

Stage differential temperature (hysterisys)

4.3 Operation Limits

Operations

4.4 Default Setting Reset Switch

• To reset the system setting to default setting

• After the power supply is Off, switch the switch 1 to ON

81

SW1

ON

OFF

Operations

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