VEVOR Air-Cooled Industrial Chiller
Models: GW532A-8D, GW532A-15D, GW532A-20D
This is the original instruction. Please read all manual instructions carefully before operating. VEVOR reserves a clear interpretation of our user manual. The appearance of the product shall be subject to the product you received. VEVOR will not provide further notification for any technology or software updates on its products.
Please read the manual carefully before installing the controller!
Software Version: X1.GW532A.TY.F01M V100L05
1 Instructions
Dear Customer:
Thank you for choosing PUNP products! For your convenience, please read the instructions carefully and follow the steps of the Manual.
2 Specifications
| No. | Specification Parameter | Description | No. | Specification Parameter | Description |
|---|---|---|---|---|---|
| 1 | Rated input voltage | AC480V 60Hz | 6 | Switch Output | 5 relays 250VAC 2A |
| 2 | Temperature Range | -40~100°C | 7 | Relay load type | D01: annunciator D02-D05: contactor or valve |
| 3 | Measurement Accuracy | 0.1°C@25°C | 8 | Switch Input | 12 passive signal inputs |
| 4 | Working Environment | -10°C~60°C, ≤85%RH non-condensation | 9 | Analog Input | 1 NTC temperature sensor |
| 5 | Storage Environment | -20°C~70°C, ≤85%RH non-condensation | 10 | Current Input | 4 ways of current (0.3~35A) |
3 Panel Diagram
The control panel includes various indicators and buttons:
- Lights:
- Remote ON/OFF is allowed
- Remote ON/OFF is forbidden
- Twinkle: Unit alarm, Compressor run is allowed, Compressor is running
- Black out: No alarm, Compressor run is not allowed, Pump stopped
- Buttons: Menu, Cancel, Back, Shift, Add value/Change page/Choose parameter, Decrease value/Change page/Choose parameter, OK/Query/Reset/Enter, Units ON/OFF
- Labels: Industrial Chiller, 远程 (Remote), 故障 (Alarm), 压缩机 (Compressor), 泵 (Pump)
4 First Power-on
The controller requires configuration upon first power-on. Refer to section 10.4 Configuration guide for specific operations.
5 Common Screens
Commonly used screens include the main screen and the alarm screen.
5.1 Main Screen
The system enters the main screen after a countdown, displaying PV, liquid temperature, Fn Menu, and Set temperature. Buttons available are Fn, Menu, +, -, Set.
To change the language quickly, press [Fn] + [-] for 3 seconds on the main screen.
5.2 Alarm Screen
In case of unit failure, the alarm screen displays PV, an alarm symbol (!), liquid temperature (display flickeringly), and options for Silence & Query. Buttons available are Fn, Menu, OK, Query, -, +.
To change the language, press [Fn] + [or] on the language screen. To quit without saving, press [Fn]. To save and quit, press [Fn].
6 Common Operation
6.1 Quick Modification of Setting Temperature
If the user parameter [Lock T.set] is set to "No", the setting temperature can be modified directly on the main screen.
Note: The setting temperature can also be modified in the user parameters.
6.2 Query/Reset Fault
In case of a fault, the alarm screen will automatically pop up. Operation details for querying and resetting faults are provided.
7 Function Menu
Press the [Fn] button on the main screen to enter the Function Menu, which includes five items:
| No. | Menu Item | Function | Remark |
|---|---|---|---|
| 1 | User Settings | To display user parameters | For number of user parameters and their implications, please refer to: 9 User Parameters Table. |
| 2 | Unit Status | To display the current operating status of the unit | Current value is not displayed when current module is not used. |
| 3 | History List | Allowing the query of the last 10 faults | Press [Fn] + [Up Arrow] for 2s to clear the fault history. |
| 4 | Comp run time | To display the cumulative operation time of the compressor | |
| 5 | Version | To check the current software version |
8 Parameter Operation
The modification of parameter values, such as setting temperature, is described as an example.
9 User Parameters Table
The implication of each parameter in the user parameters is listed below:
| No. | Parameter Name | Factory Default | Setting Range | Remark |
|---|---|---|---|---|
| 1 | Lock T.set | No | Yes ~ No | Yes: the set temperature cannot be modified on the main screen when locked. No: the set temperature can be modified on the main screen. |
| 2 | T.setpoint | 12.0°C | [T.setpoint min] ~[T.setpoint max] | Setting range is limited by manufacturer parameters [T.setpoint max], [T.setpoint min]. (Not displayed when [TEMP Unit] is set to "Fahrenheit".) |
| 3 | T.setpoint | 53.6°F | [T.setpoint min] ~[T.setpoint max] | Setting range is limited by manufacturer parameters [T.setpoint max], [T.setpoint min]. (Not displayed when [TEMP Unit] is set to "Celsius".) |
| 4 | TEMP Unit | Celsius | Celsius; Fahrenheit | |
| 5 | Contrast | 32 | 20~44 | Adjust the LCD contrast. |
| 6 | On/Off type | Local | Local / Local + Remote / Remote | Local: unit starts/stops locally. Local + Remote: unit starts/stops locally and remotely. Remote: unit starts/stops remotely. |
| 7 | Backlight On | 0 | 0~255 minute(s) | 0: backlight is not turned off. |
| 8 | Language | 中文 | 中文~English | Select the display language. |
| 9 | Comp Select | Two Comp | 1#Comp/2#Comp/ Two Comp | Select the compressor to run. If one compressor is selected, the other does not work. Not listed for single compressor machines. |
10 Manufacturer Menu
Press [Fn] + [Up Arrow] on the main screen to enter the Enter Password screen. Enter the manufacturer password (default 4561, recommended to change). Then enter the Manufacturer Function Menu, which includes five items.
10.1 Procedures of Entering Manufacturer Menu
The process involves entering the password on the Main Screen, leading to the Enter Password screen, then potentially a Change Password screen, and finally the factory menu.
10.2 Details of Manufacturer Menu
The manufacturer menu details and functions are listed below:
| No. | Parameter Item | Function | Remarks |
|---|---|---|---|
| 1 | Manuf. setting | To set the parameters commonly used by the manufacturer | Refer to 13 Manufacture Parameters for specific parameters. |
| 2 | Manuf. debug | To debug the abnormal operation of each electrical part of the unit | Not available during unit operation. |
| 3 | Config guide | Commonly used parameters of configuring the unit | Not available during unit operation. The screen pops up on first power-on. |
| 4 | Initialize | For initializing all parameters of the machine | Refer to 10.5 Manufacture Parameters for initial values. |
| 5 | Password Set | To set the password to enter the manufacturer menu | Default value is 4561, recommended to change. |
Note: Press [Fn] + [Up Arrow] in the manufacturer menu for 2 seconds to reset the cumulative operation time of the compressor.
10.3 Manufacturer Debugging
Manufacturer debugging tests the operation of each electrical part of the unit. It is not available during unit operation. The method involves testing three-phase power input, alarm inputs, and relay outputs. Test results indicate wiring and parameter correctness.
10.4 Configuration Guide
Configure common machine parameters. Refer to 13 Manufacturer Parameters Table for details. Access is not available during unit operation. The Configuration guide screen pops up on first power-on. If "Cancel" is selected, it will reappear on the next power-on. Once entered, it won't pop up automatically and can only be accessed via the Manufacturer Menu.
11 Fault List
This section details faults, their descriptions, test conditions, troubleshooting steps, and solutions.
| Fault | Description | Test Conditions | Troubleshooting | Solution |
|---|---|---|---|---|
| 1#Comp.P high | High pressure of compressor1 | If [HP check dly] is 0, test when compressor button is pressed; if not 0, compressor runs the test. | Stop compressor1 only without affecting other equipment to work. [Note1] | Check if input is consistent with switch setting. |
| 1#Comp.P low | Low pressure of compressor1 | If [LP detect dly] is 0, test when compressor button is pressed; if not 0, compressor1 runs the test. | Check if input is consistent with switch setting. | |
| 1#Comp overload | The compressor1 overload | Compressor1 runs the test. | Check if rated current of compressor1 is reasonable. Check if measure tool of compressor1 current is connected. | |
| 1#Comp.I high | The current of compressor1 is too high | Check if input is consistent with switch setting. | ||
| 1#Comp.I low | The current of compressor1 is too low | Check if input is consistent with switch setting. | ||
| 1#T.Vent high | The vent temperature of compressor1 is too high | Check if input is consistent with switch setting. | ||
| 2#Comp.P high | High pressure of compressor2 | If [HP check dly] is 0, test when compressor button is pressed; if not 0, compressor2 runs the test. | Stop compressor2 only without affecting other equipment to work. [Note2] | Check if input is consistent with switch setting. |
| 2#Comp.P low | Low pressure of compressor2 | If [LP detect dly] is 0, test when compressor button is pressed; if not 0, compressor2 runs the test. | Check if input is consistent with switch setting. | |
| 2#Comp overload | The compressor2 overload | Compressor2 runs the test. | Check if input is consistent with switch setting. | |
| 2#Comp.I high | The current of compressor2 is too high | Check if rated current of compressor2 is reasonable. Check if measure tool of compressor2 current is connected. | ||
| 2#Comp.I low | The current of compressor2 is too low | Check if input is consistent with switch setting. | ||
| 2#T.Vent high | The vent temperature of compressor2 is too high | Check if input is consistent with switch setting. | ||
| Temp.low AL | The liquid temperature is too low | Test after cold pump starts | Stop the compressor and delay to stop the cool pump, and do not stop the cold pump. | Check if the liquid temperature is lower than the set temperature of liquid protection. |
| T.high warn | The liquid temperature is higher than the warn value. | Alarm only without affecting other equipment to work. | Check if the liquid temperature is higher than the set temperature of liquid warn. | |
| Temp.high AL | The liquid temperature is too high | If [Temp.high AL] is set "Pump keep", stop compressor and delay cool pump stop; If "Pump stop", stop the unit. | Check if the liquid temperature is higher than the set temperature of liquid protection. | |
| Anti-freeze.AL | Antifreeze alarm | Power on to test | Stop all compressor and cool pump, do not stop cold pump. | Check if the antifreeze input is consistent with the switch setting. |
| Probe break | The liquid temperature sensor is broken | Test after Cool pump starts | Check if the temperature probe is in proper contact. | |
| Probe short | The liquid temperature sensor is short | |||
| cool fan overload [Note3] | The cool pump or fan overload | Test after the cool pump starts for [Cool on delay] time | Stop compressor1 and cool pump or fan only | Check if the fan1 overload input is consistent with the switch setting. |
| Cool.I high AL | The current of cool pump or Fan is too high | Test after the cold pump starts for [Pump on delay] time | Stop compressor1 and cool pump or fan only | Check if the rated current of cool is input is reasonable. |
| Cool.I low AL | The current of cool pump or Fan is too low | Check if the measuring tool of the cool current is connected. | ||
| Cool W.flow AL | Lack of cool water flow | Check if the cool water flow input is consistent with the switch setting. | ||
| Cold W.flow AL | Lack of cold water flow | If [Lack of water] is set "Pump keep", stop compressor and cool pump; If "Pump stop", stop the unit. | Check if the cold water flow input is consistent with the switch setting. | |
| Cold Pump Overload [Note3] | The cold pump overload | Stop the unit | Check if the cold pump overload input is consistent with the switch setting. | |
| Pump.I high AL | The current of cold pump is too high | Test after cold pump starts | Check if the rated current of cold is input is reasonable. | |
| Pump.I low AL | The current of cold pump is too low | Check if the measure tool of the cold current is connected. | ||
| Phase AL | The three-phase power input is alarm | Power on to test | Stop the unit | Check for default phase or anti-phase in three-phase power input and switch correctness. |
| Water lv. AL | The water level is low | Power on to test | If [Low water lv.] is set "Pump keep", stop compressor and cool pump; If "Pump stop", stop the unit. | Check if the water level input is consistent with the switch setting. |
| Need Maintain | The total time of compressor run over the allow value | Test after cold pump starts | The unit cannot start once stops (accumulative operation time of compressor exceeds set value). | |
| 1#Comp Oil Low | The comp oil level is low | Compressor1 runs the test. | Stop the compressor and delay to stop the cool pump, do not stop the cold pump. | Check if the comp oil level input is consistent with the switch setting. |
| 2#Comp Oil Low | The comp oil level is low | |||
| Need Upkeep | The total time of compressor run over the allow value | Power on to test | Alarm only without affecting other equipment to work, can be reset. |
Notes:
- [Note1]: For "1#Comp.P low" fault, if [LP stop pump] is not zero, stop all compressors and cool pump, delay [LP stop pump] and stop cold pump. If [LP stop pump] is zero, only stop compressor1.
- [Note2]: For "2#Comp.P low" fault, if [LP stop pump] is not zero, stop all compressors and cool pump, delay [LP stop pump] and stop cold pump. If [LP stop pump] is zero, only stop compressor2.
- [Note3]: Machine type display for Cold Pump overload and Cool Pump overload: AIR-WATER (Cold Pump Overload, Cool Fan Overload), W-W SYS. (Cold Pump Overload, Cool Pump Overload), AIR-AIR (Cold Fan Overload, Cool Fan Overload), WATER-AIR (Cold Fan Overload, Cool Pump Overload).
12 Control
12.1 Logic of compressor
Single Compressor:
- Heating: Compressor ON when PV ≥ SV + ADD.
- Cooling: Compressor OFF when PV < SV – SUB.
Double Compressors:
- If [Unload offset] is not 0: Heating: one compressor ON when PV > SV, two ON when PV ≥ SV + ADD. Cooling: if two ON, one OFF when PV < SV; if one ON, OFF when PV < SV - SUB.
- If [Unload offset] is 0: Heating: one compressor ON when PV ≥ SV + ADD; if PV ≥ SV + ADD persists after [Capacity ctrl.] time, two ON. Cooling: compressor OFF when PV < SV.
Note: PV = Liquid temperature, SV = Set temperature, ADD = Load temperature difference, SUB = Unload temperature difference.
12.2 Logic of pump freeze protection
- If [T.freeze prot] = "forbid", no freeze protection.
- Otherwise (idle state): Pump opens if SV ≤ [T.freeze prot]; Pump closes after 10 seconds if SV ≥ [T.freeze prot] + 2.
13 Manufacturer Parameters Table
Parameters set by the manufacturer and their meanings are listed below:
| Setting Item | Name of Parameter | Factory Default | Setting Range | Remark |
|---|---|---|---|---|
| Func. Setting | *One-Key start | Forbid | Forbid ~ Use | Forbid: Compressor ON only when compressor button pressed. Use: Compressor ON when pump button pressed. |
| Func. Setting | Auto start up | Forbid | Forbid ~ Use | Use: Unit starts automatically when powered on. Forbid: Unit does not start automatically. (Invalid if [On/Off type] is "Remote".) |
| Func. Setting | Alarm output | Keep when mute | Keep when mute; Stop when mute | Keep when mute: "alarm output" parameter takes action on fault. Stop when mute: "alarm output" parameter takes action after silencing a fault. |
| Func. Setting | Alarm type | N.O | N.O ~ N.C | N.O: Alarm relay ON during faults. N.C: Alarm relay OFF during faults. |
| Input Setting | *DI5 function | Water switch | Water switch; Vent1 temp | Water switch: DI5 for water level. Vent1 temp: DI5 for Vent1 temperature. |
| Input Setting | *DI9 function | Phase switch | Phase switch; Cool W.flow; Vent2 temp; 2#Comp Oil LVL | Phase switch: DI9 for phase sequence. Cool W.flow: DI9 for cool water flow. Vent2 temp: DI9 for Vent2 temperature. 2#Comp Oil LVL: DI9 for 2#comp oil level. |
| Time Setting | *Low water lv. | Pump stop | Pump stop ~ Pump keep | Pump stop: stops cold pump on low water fault. Pump keep: does not stop cold pump on low water fault. |
| Time Setting | *Lack of water | Pump stop | Pump stop ~ Pump keep | Pump stop: stops cold pump on cold water flow fault. Pump keep: does not stop cold pump on cold water flow fault. |
| Temp. Setting | *Current detect | Use | Forbid ~ Use | Use: current detection module. Forbid: no current detection. 0A: no current fault detection. Parameter not displayed if [Current detect] is "Forbid". (For currents < 1A, wind sensor two/three laps.) |
| Temp. Setting | *1#Comp.I rating | 0.3A | 0~35.0A | |
| Temp. Setting | *2#Comp.I rating | 0.3A | 0~35.0A | |
| Temp. Setting | *Pump. I rating | 0.3A | 0~35.0A | |
| Temp. Setting | *Cool. I rating | 0.3A | 0~35.0A | |
| Input Setting | *Phase monitor | On_board | On_board; Forbid; IO_input | On_board: uses controller's three-phase protection. Switch input: uses external protection. (External protection requires [DI9 function] set to "Phase switch".) Forbid: disables three-phase power detection. |
| Input Setting | DI1 input opt | Cool overload | Cool overload; Anti-freeze | Selection of DI1 input function. |
| Input Setting | *Comp number | 2 | 1~2 | Selection of the number of compressors. |
| Input Setting | *Machine type | AIR-WATER | AIR-WATER; W-W SYS.; AIR-AIR; WATER-AIR | AIR-WATER: fan-cooled water chiller. W-W SYS.: water-cooled water chiller. AIR-AIR: fan-cooled fan cooler. WATER-AIR: water-cooled fan cooler. |
| Input Setting | *Lang switch | Use | Forbid ~ Use | Use: Allows switching between English and 中文 (Chinese). Forbid: Disables switching. |
| Temp. Setting | *Temp.high AL | Pump keep | Pump stop ~ Pump keep | Pump stop: stops cold pump on Temp.high fault. Pump keep: does not stop cold pump on Temp.high fault. |
| Input Setting | *DI2 function | Remote | Remote; 1#Comp Oil LVL | Remote: DI2 for remote switch. 1#Comp Oil LVL: DI2 for 1#comp oil level detection. |
| Input Setting | *DO1 function | Alarm signal | Alarm signal; Run signal | If "Alarm signal": N.O=relay ON on fault; N.C=relay OFF on fault. If "Run signal": N.O=relay OFF when normal; N.C=relay ON when normal. |
| Temp. Setting | Load offset | 1.0°C | 0~10.0°C | Temperature deviation of load compressor. |
| Temp. Setting | Load offset | 1.8°F | 0~18.0°F | Fahrenheit °F |
| Temp. Setting | Unload offset | 1.0°C | 0~10.0°C | Temperature deviation of unload compressor. |
| Temp. Setting | Unload offset | 1.8°F | 0~18.0°F | Fahrenheit °F |
| Temp. Setting | T.setpoint max | 30.0°C | -40.0~99.9°C | To limit the temperature of user set. |
| Temp. Setting | T.setpoint max | 86.0°F | -40.0~211.8°F | Fahrenheit °F |
| Temp. Setting | T.setpoint min | 5.0°C | -40.0~99.9°C | |
| Temp. Setting | T.setpoint min | 41.0°F | -40.0~211.8°F | Fahrenheit °F |
| Temp. Setting | T.bias | 0.0°C | -9.9~9.9°C | Compensation for the liquid temperature. |
| Temp. Setting | T.bias | 0.0°F | -17.8~17.8 | Fahrenheit °F |
| Time Setting | T.low protect | 4.0°C | -45.0~99.9°C | Fault "Temp.low AL" warning reported when liquid temperature is lower than set value. |
| Time Setting | T.low protect | 39.2°F | -49.0~211.8°F | Fahrenheit °F |
| Time Setting | T.high warn | 50.0°C | 0~99.9°C | Fault "Temp.high warn" reported when liquid temperature is higher than set value. |
| Time Setting | T.high warn | 122.0°F | 32.0~211.8°F | Fahrenheit °F |
| Time Setting | T.high alarm | 60.0°C | 0~99.9°C | Fault "Temp.high AL" reported when liquid temperature is higher than set value. Stops compressor and delays cool pump stop. |
| Time Setting | T.high alarm | 140.0°F | 32.0~211.8°F | Fahrenheit °F |
| Time Setting | T.high reset | 5.0°C | 0~99.9°C | If liquid temp < [T.high alarm] – [T.high reset], manual reset of "Temp.high AL" allowed. If liquid temp < [T.high warn] – [T.high rese], "Temp.high warn" auto-resets. |
| Time Setting | T.high reset | 9.0°F | 0~179.8°F | Fahrenheit °F |
| Time Setting | T.freeze prot | forbid | forbid~15.0°C | No function when set to forbid. |
| Time Setting | T.freeze prot | forbid | forbid~59.0°F | No function when set to forbid (32.0°F). |
| Time Setting | Pump on delay | 10 S | 1~255 S | Delay after cold pump startup. |
| Time Setting | Cool on delay | 10 S | 1~255 S | Delay after cool pump startup. |
| Time Setting | Capacity ctrl. | 5 S | 0~255 S | Controls compressor ON/OFF every [Capacity ctrl.] interval. For double-compressor, one ON if conditions met, second ON after [Capacity ctrl.] time. Prevents frequent ON/OFF by setting interval between starts. |
| Time Setting | Comp protect | 60 S | 0~255 S | General fault stable time. |
| Time Setting | Input stable | 2 S | 0~255 S | Valid only when water flow alarm continues for this time. |
| Time Setting | W.flow stab. | 5 S | 0~255 S | |
| Time Setting | LP detect dly | 60 S | 0~255 S | Compressor low-pressure fault input allowed only when compressor has run for set time. |
| Time Setting | LP stable | 5 S | 0~255 S | Low-pressure fault stable time. |
| Time Setting | LP stop pump | 0 S | 0~300 S | 0: no effect. Non-0: on low pressure fault, immediately stop all compressors and cool pump, delay [LP stop pump] and stop cold pump. |
| Time Setting | Comp operation | 0 H | 0~9999 H | 0: no effect. Non-0: compressor cannot start if accumulative operation time exceeds set value. |
| Time Setting | Comp shift | 0 Min | 0~255 H | 0: no effect. Non-0: a compressor automatically switches after running continuously for that time. |
| Time Setting | 1#Comp.I avoid | 2 S | 1~255 S | 1# compressor current fault detected after 1# compressor started for set time. (Not displayed if [Current detect] is "forbid".) |
| Time Setting | 2#Comp.I avoid | 2 S | 1~255 S | 2# compressor current fault detected after 2# compressor started for set time. (Not displayed if [Current detect] is "forbid".) |
| Time Setting | Pump. I avoid | 2 S | 1~255 S | Cold pump current fault detected after it has started for set time. (Not displayed if [Current detect] is "forbid".) |
| Input Setting | Cool. I avoid | 2 S | 1~255 S | |
| Input Setting | Comp Oil dly | 5 S | 1~255 S | 1#Comp/2#comp oil low stable time. |
| Input Setting | W.level delay | 0 M | 0~30 M | 0: no effect. Non-0: alarm delayed before action if water level is too low. |
| Input Setting | HP detect dly | 0S | 0~255 S | Compressor high-pressure fault input allowed only when compressor has run for set time. |
| Input Setting | Unit upkeep | 0 H | 0~9999 H | 0: no effect. Non-0: alarm when accumulative operation time of compressor exceeds set value. |
| Input Setting | *Freez overload | N.O | N.O N.C Forbid | Selection of switch input mode. N.O: switch off with no fault. N.C: switch closed with no fault. Forbid: state not detected. |
| Input Setting | *Cold W.flow | N.C | N.O N.C Forbid | When [DI5 function] is "Vent1 temp", settings for vent1 temperature detection. |
| Input Setting | *W.level switch | N.C | N.O N.C Forbid | When [DI9 function] is "Cool W.flow", settings for cool water flow switch. When [DI9 function] is "Vent1 temperature", settings for vent1 temperature detection. |
| Input Setting | *Comp overload | N.O | N.O N.C Forbid | Selection of switch input mode. |
| Input Setting | *Low pressure | N.C | N.O N.C Forbid | Selection of switch input mode. |
| Input Setting | *High pressure | N.O | N.O N.C Forbid | Selection of switch input mode. |
| Input Setting | *Phase error | N.O | N.O N.C Forbid | When [DI9 function] is "Vent1 temperature", settings for vent1 temperature detection. |
| Input Setting | *Cool overload | N.C | N.O N.C Forbid | When [DI1 input opt] is "Anti-freezing", settings for antifreeze switch. |
| Input Setting | Comp switch Oil | N.C | N.O N.C Forbid | 1#Comp/2#comp oil low. N.O: switch off with no fault. N.C: switch closed with no fault. Forbid: state not detected. |
| Input Setting | *Temp Low Reset | Manual Reset | Manual Reset; Auto Reset; | Reset type of "Temp.low AL". |
| Input Setting | *Level Low Reset | Manual Reset | Manual Reset; Auto Reset; |
[Note]: Remote switch: Unit starts when remote switch input is closed and stops when disconnected.
14 Electrical Connection Diagram
The diagram illustrates the electrical connections for the GW532A unit.
Main Components: CPU, GW532A, GW122B.
Inputs (DI1-DI12):
- DI1: Cool overload/Antifreezing switch
- DI2: Remote switch
- DI3: Cold Pump overload
- DI4: Cold Water flow switch
- DI5: Water level switch/Vent1 temperature
- DI6: 1#Compressor overload
- DI7: Low pressure of 1#compressor
- DI8: High pressure of 1#compressor
- DI9: Cool flow switch/Vent2 temperature/Phase switch
- DI10: 2#Compressor overload
- DI11: Low pressure of 2#compressor
- DI12: High pressure of 2#compressor
Outputs (D01-D05, RY1-RY5):
- D01: Annunciator (250VAC 2A)
- D02-D05: Contactor/valve (250VAC 2A)
- RY1: Cool pump (Fan)
- RY2: Cool pump (Fan)
- RY3: Cold pump
- RY4: 1#Compressor
- RY5: 2#Compressor
Power: 220-240VAC, 250VAC 2A.
Sensors: AI1 temperature sensor.
The diagram shows connections for both Two Compressor and One Compressor configurations.
15 Installation Dimensions
This section provides installation dimensions for the machine board and electrical box, including hole patterns and mounting pillar details.
- Machine board dimensions: 183.00 x 94.00 mm (approx.), with mounting holes.
- Electrical box hole pattern: 4.8mm holes.
- Machine board hole pattern: 4.0mm holes.
⚠️ Warning: To reduce the risk of injury, user must read instructions manual carefully.
FCC Compliance: This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Manufacturer: Sanven Technology Ltd.
Address: Suite 250, 9166 Anaheim Place, Rancho Cucamonga, CA 91730
