THERMATRAC TRW-20 Water Source Heat Pump Instruction Manual

: June 3, 2024
: THERMATRAC

Table of Contents

Preface
Technical Specifications Chart
Operation Instruction and Setting
Parameters Query and Setting
Troubleshooting (Error Code Indication)
Installation Instruction
Wiring Diagram
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WATER SOURCE HEAT PUMP
OWNER’S GUIDE & INSTRUCTION MANUAL
Instruction Manual THERMATRAC TRW-20 Water Source Heat Pump
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Please read this manual thoroughly before undertaking installation or operation and keep it in a safe place for future reference by a serviceman.

Preface

Thank you for choosing water-to-water heat pump water heater products. Before installation, it is strongly recommended to read this instruction first. This manual includes the information on installation, debugging, running, and maintenance for products.

Before installation, check the installation environment and prepare the best solution.
The installation position should be vertical and support the weight of the system, ventilated, and leave room for maintenance.
During installation, notice the below information: (refer to figure 2,3)
i. To make less resistance for the water circuit, use less unnecessary elbow, and do not equip emergency turn near the water inlet and water exit. [Refer to P2 for circular water flow] ii. Keep the pipeline clean, and avoid dust jamming the pipe. After piping, check the leakage of the pipeline by hydraulic test. [Notes: pipeline hydraulic test should test separately, do not test together with the water heater unit.] iii. PPR water pipe and other accessories (such as water pump, water meter, valve, etc.) for the water circuit should be heat-resisting. Choose a circulation pump according to the water flow and installation situation.
iv. Equip a water-flow switch to the external outlet pipe and connect it to the water-flow protection on the main PCB.
v. Install a purifier on the water inlet pipe (40~60 mesh), and clean the purifier regularly.
vi. To make cleaning more convenient, install a draw-off valve at the lowest point of the water pipe.
vii. Install loose joint to water inlet and outlet for convenience. When connecting, use pipe tongs to fix the pipe connected to the main unit, the connector on the main unit could not bear the rotating torque force directly.
viii. The water tank equipped for the commercial model should be well insulated. To make the water circulation uniform, keep a certain distance between the outlet and the backwater vent. Supply the water to the tank according to the practical use.
ix. In wintertime, keep the machine power on. When the system is powered off, do drain off the water to avoid making freeze damage to the heat exchanger and water pipe.
x. Clean the heat exchanger: install clean pipe 20-50CM from water inlet & outlet (see installation diagram 2). Use suitable abluent to flush it (about 3~5 hours) until it is clean (clean the heat exchange every three months)

Technical Specifications Chart

S/N| Model| Rated input power W| Compressor Rated current A| Power Supply V| Heating capacity W| Rated water outlet temp. °C| Unit Dimension
mm| N.W. kg| Connection size
DN
---|---|---|---|---|---|---|---|---|---
1| TRW-20| 4200| 9.| 380| 19500| 55| 859829850| 135| 25/40
2| TRW-25| 5200| 11| 380| 24000| 55| 859829850| 135| 25/40
3| TRW-40| 8700| 18.| 380| 40000| 55| 15037231070| 276| 40
4| TRW-50| 10400| 22| 380| 48000| 55| 15037231070| 286| 40
5| TRW-90| 20000| 38| 380| 90000| 55| 120010001700| 572| 40/50
6| TRWH-12| 3800| 7.| 380| 14000| 65| 859829850| 135| 25/40
7| TRWH-15| 4600| 8| 380| 16500| 65| 859829850| 135| 25/40
8| TRWH-30| 8900| 18.| 380| 33000| 65| 15037231070| 286| 40
9| TRWH-60| 17800| 39.| 380| 65500| 65| 120010001700| 572| 40/50

Note: For other or customized models, please consult Rheem or Rheem distributor for the specification sheet.

Operation Instruction and Setting

THERMATRAC TRW-20 Water Source Heat Pump - Instruction and
Setting

After powering ON the heat pump
LCD screen displays the controlling version for 2 seconds, full screen for 10 seconds, and then into normal working conditions.
[ON/OFF] When the heat pump stays powered ON, press this key to turn off the heat pump, showing water temperature, timing, and clock status. When power is OFF, press this key to turn on the heat pump, showing operation mode, set temperature, water temperature, unit timing, and clock status.
[Function] At heating mode, press this key for 3 seconds to switch ON/OFF electrical heating.
[Up], [Down] Press this key to adjust parameter checking & setting, clock setting, timing sets, and temperature setting.
In the parameter query, press this button to access different parameter items.
In the parameter setting, press to adjust the parameter values.
In the clock setting, press to adjust the clock hour and minute data.
In the timing function, to open the Auto ON/OFF setting, press this key to adjust the timing period, and timer on/off.
In the normal stage (non-clock, timer setting), press to set the water temperature.
Press the [UP], and [DOWN] buttons for 5 seconds or more, and you can set or cancel controller lock functions.
[Clock] Keypress to enter the clock setting mode, and the hour flashes, press the [Up], and [Down] keys to adjust the hour, then press enter key to confirm the hour setting.
The minute setting and minutes are blinking, press the [Up], and [Down] keys to adjust the minutes, then press this button to confirm the minutes and exit clock setting.
In the timer ON/OFF setting, press this key to cancel this time period timed ON/OFF.
In a parameter query, press this button to reset the external drive failure.
Hold this button for 3 seconds to enter the parameter query status.
[Timing] Keypress to enter the timing function.
In the non-clock setting mode, press this key to enter the selection timing periods, a total of three hours, according to the [Up], [Down] key to select the time period, and then press this button to select regular boot this time period or time off settings, press [Up], [Down] key to select the timer on or off timer, press “Timing” button to select
the mode, then set the timing of the hour flashes, press [Up], [Down] key to adjust the hours, then “Timing” button to confirm the timing of the hour set, set the timing of the minute flashes, press [Up], [Down] can adjust the minutes, then press the “Time” to determine the timing setting and exit timing settings.
Cancel timing, when entering the timing periods selection, press the “Time” to cancel the timer on this point and time of the set period.

Parameters Query and Setting

Hold the [clock] key for 3 seconds or more to enter the parameter query status area displays the query parameter No. The clock and temperature display area display the parameter content. Press [Up], and [Down] can change the display parameter item, press the ON/OFF button or two minutes without an operation button to exit the parameter query.
D01 for unrecoverable fault code.
Press the button one more time, d02 for the recoverable fault code.
Press the button one more time, d03 retention
Press the button one more time, d04 for the hot water outlet temperature.
Press the button one more time, d05 for the water source outlet temperature.
Press the button one more time, d06 for the water source inlet temperature.
Press the button one more time, d07 for hot water inlet temperature.
Press the button one more time, d08 for cool water inlet temperature 1＃.
Press the button one more time, d09 for cool water inlet temperature 2＃.
Press the button one more time, d10, this parameter is reserved
Press the button one more time, d11 for ambient temperature.
Press the button one more time, d12 for coil pipe 1＃temperature.
Press the button one more time, d13 for coil pipe 2＃temperature.
Press the button one more time, d14 for gas return 1＃temperature.
Press the button one more time, d15 for gas return 2＃temperature.
Press the button one more time, d16 for gas outlet 1＃temperature.
Press the button one more time, d17 for gas outlet 2＃temperature.
Press the button one more time, d18 for low water level sensitivity.
Press the button one more time, d19, this parameter is reserved.
Press the button one more time, d20 for high water level sensitivity.
Press the button one more time, d21 for the protection switch status.
Press the button one more time, d22 for output 1＃status.
Press the button one more time, d23 for output 2＃status.
Press the button one more time,d24 for EEV 1＃open.
Press the button one more time, d25 for EEV 2＃open.
Press the button one more time, d26 for retention
Press the button one more time, d27 for retention
Press the button one more time, d28 for retention
Press the button one more time, d29 for the heat pump model code.
Press the button one more time, d30 for the control system version.
Press the button one more time, d31 for communication status 1＃.
Press the button one more time, d32, this parameter is reserved
Press the button one more time, d33 for limited running weeks.

Troubleshooting (Error Code Indication)

The following recommendations should be taken into consideration

failure code| Failure description| Failure causes| Failure recovery
---|---|---|---
E01| water tank temperature sensor failure| The hot water temperature sensor is disconnected or shorts out| check the connection of the water tank temperature sensor/change the temperature sensor
E02| Ambient temperature sensor failure| The ambient temperature sensor is disconnected or shorted out| check the connection of the ambient temperature sensor/change the ambient temperature sensor
E03| Water source inlet temperature sensor failure| The water source inlet the temperature sensor is disconnected or shorts out| check the connection of the water source inlet temperature sensor/change the water source inlet temperature sensor
E04| Water flow switch protection failure| the water flow switch is disconnected/the water pipe is blocked/the water pump does not start / insufficient water flow| Check the water flow switch/ dean the pipeline and the filter/check and replace the water pump with a bigger one
E05| High pressure 1 # switch failure| Disconnection due to high-pressure protection/
insufficient water flow| clean the pipeline and the filter /check and replace the high-pressure switch
E06| Low pressure 13 switch failure| Disconnection due to low-pressure protection/
insufficient refrigerant.| re-charge the refrigerant / replace the low- pressure switch
E07| water outlet temperature failure| The water outlet temperature sensor is disconnected or shorted out| check the wire connection of the sensor or replace the sensor
E08| Lack water protection| The water line is disconnected or the storage water tank lack water| Check the connection of the water level, and water inlet valve or change the electronic board
E09| Inadequate protection of hot
water temperature| The temperature between outlet water and inlet water is over 15°C| Check the sensor of the outlet and inlet/outlet water volume
E10| communication failure| poor connection or disconnection of the operation panel| Check the connection situation of the operation panel /replace the
operation panel or the main board.
E11| Compressor discharge 1 43 temp protection| The sensor is disconnected or shouted out/the pressure is too high/insufficient refrigerant.| Check the discharge sensor, pressure, and re-charge refrigerant
E12| High pressure 2 44 switch failure| Disconnection due to high-pressure protection/
insufficient water flow| clean the pipeline and the filter /check and replace the high-pressure switch
E13| Low pressure 2 4t switch failure| Disconnection due to low-pressure protection/
insufficient refrigerant.| e-charge the refrigerant / replace the low-pressure switch
E14| Compressor gas outlet 2 #
temperature protection| The sensor is disconnected or shouted out/the pressure is too high/insufficient refrigerant.| Check the discharge sensor, pressure or re-charge refrigerant
E15| Gas outlet temperature sensor 114 failure| Temperature sensor is
disconnected or shorted out| Check the connection line or change the sensor
E16| Temp sensor failure (water source outlet)| The sensor is disconnected or shouted out| check the connection of the sensor and replace the sensor
E17| Gas outlet temp sensor 2#failure| The temp sensor is disconnected or shorted out| Check the connection line or replace the sensor
E18| Cold water inlet 1#temp failure| It is disconnected or shorted out| Check the connection line or change the sensor
E19| water flow switch protection of water source| Water flow switch disconnected / pipeline blocked / water pump failure / insufficient water flow| Check the water volume or water flow switch connection
E21| The water source inlet temp is too low to protection| Inlet water of water source below 7°C| Check the sensor of the outlet and inlet or outlet water volume
E22| Cooling water temp too low to protection| Cooling water outlet temp
below 5°C| Check the water flow switch/ dean the pipeline and the filter/ check and replace the water pump with a bigger one
E23| Water source outlet temp too high to protection| The water source of outlet water temp over 65°C| Check the water flow switch/clean pipeline and the filter/check and replace the water pump with a bigger one
E24| hot water outlet temp too high to
protection| Water outlet temp over 75°C| Check the sensor of the outlet and inlet/outlet water volume
E25| Water source outlet temp too low to protect| The water outlet temperature of a water source over 2°C| Check the sensor of the outlet and inlet/outlet water volume
E26| Cold water inlet 2#temp sensor
failure| the sensor is disconnected or shorted out| Check the connection line or change the sensor
E27| Gas return temp sensor 1# failure| the sensor is disconnected or shorted out| Check the connection line or change the sensor
E28| Gas return temp sensor 2# failure| the sensor is disconnected or shorted out| Check the connection line or change the sensor
E29| Coil pipe 1#temP sensor failure| the sensor is disconnected or shorted out| Check the connection line or change the sensor
E30| Coil pipe 2#temp sensor failure| the sensor is disconnected or shorted out| Check the connection line or change the sensor
E31| Inadequate protection of water temp difference| Temp between outlet water and inlet water over 15°C| Check the sensor of the outlet and inlet/outlet water volume
E35| Three-phase reverse protection| Power source lack of phase protection or phase board error| Replace the power cable or phase board
E37| Limited running protection| Procedure setting of the limited running period| Reset parameter
E39| EEPROM failure| The chip program error| Replace electronic board

Installation Instruction

THERMATRAC TRW-20 Water Source Heat Pump - Installation
Instruction

ITEM	DESCRIPTION	MODEL	QTY	REMARKS
1	WATER SOURCE HEAT PUMP WATER HEATER	THFRMATRAC TRW-10	2	OUTPUT -40KW

Typical Water Source Heat Pump System Schematic Diagram

Installation notes:

The factory supplies only the main units for commercial heat pump water heaters, users prepare other accessories.
Before installation and use, please read these instructions carefully.
The unit needs to be installed on enough bearing capacity and flat surface areas, there is enough space for repair.
Avoid electronic components close to the water and lead to moisture, otherwise, a short circuit may cause fire or damage to the unit.
The cable connection must be correct, otherwise, it may damage the unit of electronic components, the unit must be installed on the line of reliable leakage protection switch, otherwise, it may occur in an electric shock accident or the safety accident caused by leakage.
The emergence of lightning, or high electromagnetic radiation may have an impact on the unit, such abnormal, please disconnect the power, and wait for the impact of the removal of the start of the unit, otherwise, it may damage the unit or shorten the service life of the unit.
Please have professional personnel install, it if the operation mistake will lead to fire, leakage, safety accident occurred, or DSA machine yuan’s normal work.
The water piping system design requirements of resistance as small as possible, to reduce the elbow unnecessarily, especially a sharp turn in the inlet, and the outlet cannot be close to the unit, to prevent water flow reduction.
A pipeline should be kept clean, with no rust dirt, to prevent clogging the pipeline, pipe after the examination to ensure that the pipeline pressure leak detection system is without penetration now [Note: piping should be separate pipeline pressure test, do not set together with the dual-source pressure test].
Don’t take any other electrical equipment grounded to the water machine water pipe.
This may be caused by electrolytic corrosion of water pipelines.