Manuals+

Reclaim Energy CO2 Heat Pump Hot Water System

Quick Start/Install Manual

Installation | Operation | Maintenance

Covering Model Numbers (For STC Claims)

Product Number: HE-UM60AR

Digital Copy of Manuals

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Important Information

IMPORTANT: This appliance is not intended for use by persons (including children) with reduced physical, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.

WARNING: FOR CONTINUED SAFETY OF THIS APPLIANCE IT MUST BE INSTALLED, OPERATED AND MAINTAINED IN ACCORDANCE WITH THE MANUFACTURER'S INSTRUCTIONS. This appliance may deliver water at a high temperature. Refer to the Plumbing Code of Australia (PCA), local requirements and installation instructions to determine if additional delivery temperature control is required.

Issue 7 | Sept 2025

Sections Overview

This document is structured into the following sections:

First Time Commissioning Procedure

This is important work for the heat pump system to operate correctly and safely. Make sure to follow these steps:

Prior to commissioning the system, all plumbing and wiring must be completed in accordance with the plumbing and wiring diagrams given in this manual.

  1. Plumbing completed.
  2. Wiring completed.
  3. Tank filled up with water and system is purged by PTRV and taps.
  4. Heat pump is purged from the bleed valves on the side of the heat pump.
  5. Controller is plugged in and is programmed with the preferred option.
  6. Heat pump is plugged in.
  7. 15-30 MINUTES post commissioning, the hot water at the outlet of the heat pump must have reached over 60°C before the installer leaves the site. This can be done by pressing and holding the SW4 button on the PCB display; parameters 10 and 11 will show the inlet and outlet temperature of the heat pump, respectively.

Heat Pump Checks

Make sure the installer completes and considers the following without fail:

1. Fill up the tank and check for water leakages

Operate and observe the following steps:

  1. Open the water shut off valve (a).
  2. Ensure you have filled the tank and fully purged all the air by opening a tap (b), the hot water tap inside the house. Ensure you then turn the tap off.
  3. Operate the lever of the pressure relief valve of the tank (PTRV) (c) to open it. Continue until water comes out of the pressure relief valve and close the lever of the pressure relief valve (c).
  4. Check that there are no water leakages from all the pipes. Check the pipe's insulation before fixing any leaks.

2. Purge the air of the heat pump unit

Make sure the following steps are completed. If this is not done correctly, it may cause the heat pump unit to malfunction.

  1. Open the 3 DRAIN TAPS:
    • Check if the water comes out vigorously. (Let it run with a continuous flow for more than a minute).
    • Do not remove the drain plugs (for risk of losing them).
  2. Close the 3 DRAIN TAPS.

Make sure to purge the air since air tends to remain and cause malfunction, especially when the heat pump unit pipes are long and there is a height difference. [Refer to section 2.3.5 for wiring details related to covers].

3. Check the circuit breakers (RCD's) operation

4. Check for water condensation and noise.

  1. Make sure there are no abnormal sounds or vibrations when the heat pump unit operates. (Refer to section 3.1).
  2. Check that condensation water generated on the heat exchanger (Aluminum fin) of the heat pump unit's back surface is properly drained.
    • Check by pouring in approximately 300 ml of water from the back surface to the inside of the unit.

Controller Operation

Diagram shows a Heat Pump Unit with three drain taps labeled "Open" and "Close". Below this, a diagram shows the bottom of the unit with labels: "Aluminium fin", "The drainage ditch", "The condensation water", "Drain elbow", and "Drain hose".

CONTROLLER:

  1. Check the controller is connected to the power point and has power.
  2. Connect the RJ45 cable and initiate the purge cycle. The controller communication cable is connected to the heat pump. (V1.1 controller: RJ45 terminal block).
  3. Select from the 6 operational mode options. After setting up the option, please go back to the main menu and press the "temp" button. The current tank option and active option will be shown within seconds.

Critical Notes

NOTE 1: Remember to drain and purge the heat pump on commissioning (otherwise system might fail). Refer to the "Drain Plug" diagram shown below. Also, remember to drain from the hot water taps inside the house.
Diagram shows the bottom board of the heat pump unit with a drain elbow and drain hose (inner diameter 15 mm or 16 mm). It warns to be careful not to let the drain hose come off. A gap is indicated between the bottom board and the drain elbow. The diagram also shows the heat pump unit installed on a stand with a height of 100 mm or more, with the drain hose sloping downwards. It advises to provide a gap for the spout to indirectly drain and not let it submerge in water.
NOTE 2: We recommend a small amount of heat transfer paste be applied to the sensor probe and cable gland to increase the heat transfer between the probe and internal tank area.
Diagram shows two temperature probes with cables, illustrating where heat transfer paste should be applied.
NOTE 3: Maximum horizontal distance is 10m and vertical distance is 3m between heat pump and tank (max of 5 bends).
NOTE 4: Bottom tank sensor MUST be connected as part of the installation process.

Specifications

Product number: HE-UM60AR

External form: The dimensions are as the following. Exterior colour: IVORY WHITE

Included items: Drain Elbow

Water port connection: (Inlet pipe, Outlet pipe) G1/2

Fixing part: 13 mm hole (2 places), U-groove 13 mm width (2 places)

Diagram shows the external dimensions of the heat pump unit from the front and side views, with measurements for width, height, depth, and port locations (Drain Port Φ40, 2-U-groove 13 mm width, 2-Φ13 mm hole, Hot Outlet Port G1/2, Cold Inlet Port G1/2, 3 DRAIN TAPS).
NOTE: Please note that warranty will be voided if the system is installed without a Reclaim Energy Tank or Reclaim Energy Controller. The system will also be ineligible for any Rebates.

System Description

The following system description section provides a brief overview of the Reclaim CO2 Heat Pump components and functionality.

1.1 Main Components

The system components of the air sourced heat pump that customers will receive include the following:

1.2 System Operation

The CO2 heat pump unit receives cold water from the bottom of the tank. Using heat from the ambient air, the heat pump heats the CO2 refrigerant to generate hot water. The hot water returning from the heat pump unit (fixed at 63°C) is injected into the top of the tank to provide fast hot water recovery and excellent hot water stratification. As this system delivers hot water exceeding 50°C, a tempering valve must be installed for delivery of hot water to bathrooms. Un-tempered water may be delivered to the kitchen and laundry according to AU/NZS AS 3500 plumbing code.

The heat pump operation is controlled by an external controller. The controller operates based on a sensor connected to the tank at 55% – 69% level depending on the tank model ID. The heat pump will be turned on if the temperature at the sensor level on the tank drops below 59°C for the first cycle, or 37°C for the second cycle in a day, and it will run until the tank temperature at sensor level reaches 59°C. The system controls are designed to ensure that it meets the legionella requirements, as specified in the Australian standards. In the subsequent heating cycles of every 24-hour period, the heat pump "turn off" logic is adjustable by built-in timer settings.

The default timer setting is programmed to run on continuous operation; this can be adjusted by the installer based on the homeowners' requirements to suit their needs. More details regarding the controller operation and settings are outlined in Section 2.

At ambient temperatures below 5°C, frost may occur. If this happens, the heat pump will go into defrost mode in order to protect the unit (i.e., the defrost functionality will turn the heat pump on and will normally run for no more than 15 minutes in duration). When the unit is in the defrost function mode, the pump and fan will stop, and the refrigerant heat will defrost the evaporator. As defrost advances, the evaporator temperature will increase.

When a set temperature (pre-programmed) is achieved, the defrost operation stops and the heat pump will operate in line with its normal settings. More details regarding the controller operation and settings are outlined in Section 6.

The "operational window" refers to heat pump "hot water production" mode, which can be set by using one of the options on the controller. From time to time, especially during the winter and in very cold climates, the heat pump operation may be disrupted or extended by a built-in anti-freeze or defrost operational mode. The defrost cycle can occur ONLY during the operational window to defrost the ice build-up on the evaporator at the back of the unit, which is an air-CO2 heat exchanger. The defrost cycle occurs when the ambient temperature is less than about 5°C. During the defrost operation, the fan and pump stop, and the high-temperature refrigerant, which is originally used for hot water production, is supplied to the evaporator (=air-CO2 heat exchanger).

The frost cycle can take about 5 minutes, and this can happen multiple times depending on the ambient temperature, so in total, up to 20 minutes can be expected for the entire defrost cycle. The heat pump also comes with a built-in freeze protection cycle. Anti-freeze operation can ONLY occur outside the operational window of the heat pump, and the purpose of the cycle is to protect the water circuit (i.e., piping between tank and heat pump) from freezing. If the ambient and water pipe temperatures drop below 3°C, the heat pump will activate the anti-freeze operation. During the anti-freeze operation, the heat pump works as a normal heating cycle, so the fan and pump should be running. The anti-freeze operation stops when the water inlet temperature reaches 53°C or ambient temperature reaches 6°C.

Installation Details

This section relates to the preparation and the installation process for the Reclaim CO2 Heat Pump Hot Water System.

The installation of a Reclaim CO2 Heat Pump can only be completed by a licensed plumber or electrician in accordance with the local standards and regulations. Please see:

A licensed installer must adhere to occupational health and safety guidelines and other relevant industry associations. Under no circumstances should any installer attempt to install a Reclaim CO2 Heat Pump without reading and understanding this installation manual.

For any queries, Reclaim Energy staff may be contacted on 1300 38 38 15.

Note: The Reclaim CO2 Heat Pump has been designed to provide hot water for domestic applications only; other applications such as space heating are not supported by this product. Installing the heat pump unit for any other application other than for domestic hot water application will void the warranty. The installation guide for each major component of the system as well as the whole system is covered in this section.

The following sequence is recommended for installation:

  1. Conduct site inspection.
  2. Identify heat pump and tank installation location.
  3. Plan system integration: Piping and fittings.
  4. Testing and commissioning

2.1 Site Inspection and Installation Preparation

The very first step of installation is to find an appropriate location for the installation of the heat pump unit that includes: heat pump, tank and controller.

It is recommended that:

Installation Details Cont.

Water quality is an important aspect that can influence the system's operation and functionality. For the system to be warranted, the water used in the system must meet the requirements outlined in Table 1 below.

Parameter Threshold
Total Dissolved Solids< 600 mg/L or ppm
Total Hardness (CaCO3)< 200 mg/L or ppm
Electrical Conductivity850 µS/cm
Chloride< 200 mg/L or ppm
pH LevelMin 6.5 to Max. 8.5
Magnesium< 10 mg/L or ppm
Sodium< 150 mg/L or ppm
Iron< 1mg/L or ppm
Alkalinity (as CaCO3)< 200 mg/L or ppm
Dissolved (free) CO2< 25 mg/L or ppm

If you have doubts regarding water quality, please contact your local water authority or have a water test completed. In areas of poor water quality, all major components will have a reduced life due to the hardness of the water. In areas with "hard water" (>200 mg/L or ppm), a water softening device must be installed to ensure the long-term efficient operation of the system is met.

NOTE: The Reclaim Energy glass-lined tank has a sacrificial anode to protect the vessel from corrosion. An anode inspection must be completed initially after five (5) years and then every three (3) years, thereafter.

2.1.1 Component Inspection

Prior to installation, please check that the following components have been provided. Any concerns must be brought to the attention of Reclaim Energy immediately.

NOTE: All other components required for the installation not listed here should be provided by the installer.

2.1.2 Component Transportation

2.1.3 Unpacking of the Components

2.2 Hot Water Storage Tank

2.2.1 Installation Location

Figure 1: Concrete or heavy duty plastic slabs to be placed under the storage tank and/or heat pump.

2.3 Heat Pump

Before plumbing and/or wiring of the heat pump unit and integration with the rest of the system, the following sequential steps must be conducted.

When Transporting the Heat Pump Unit, Make Sure to Note the Following Items:

2.3.1 Installation Location and Spacing

Ventilation is required for the front, back, left and the right sides of the unit. Please ensure there are no obstructions within 100 mm of the unit.

Figure 2: Required space for installation of heat pump. Diagrams show top and side views illustrating required clearances (100mm, 200mm, 300mm) around the heat pump unit for ventilation, with and without obstacles on the air outlet side.
Please note that malfunctions and accidents caused by mounting or transporting will not be covered under warranty.

Installation Details Cont.

Diagram shows a heat pump unit with labels for the drain elbow, drain hose, drainage ditch, and a stand. It indicates a gap is needed for indirect drainage and that the drain hose should slope downwards. It also shows the heat pump unit on a stand with a height of 100mm or more.

IMPORTANT: THE FOLLOWING INSTRUCTIONS ARE REQUIRED TO BE MET TO INSTALL THE HEAT PUMP UNIT.

For coastal areas, install in the following places (Otherwise, it may cause a malfunction):

Diagram illustrates a building with a heat pump hot water system, showing sea breeze and sea, indicating placement considerations for coastal areas.
Diagram shows the height difference between the hot water storage tank and the heat pump unit, indicating a maximum of 3m.

Installation place of the heat pump unit:

Avoid installing the heat pump in the following locations:

Diagram shows a house with a window, illustrating placement considerations to avoid noise disturbance.

2.3.2 Mounting

Note: Reclaim Energy ASHP MUST be installed on the ground with mounting frames (a default supplied component) OR on the wall with brackets. Note: A plumber needs to have access to the underneath and to the side of the unit for maintenance.

Figure 4 shows ground mounting frames. Figure 5 shows wall mounting brackets.

Height difference with the hot water storage tank:

Installation space required for the heat pump unit:

Heat Pump Unit Installation Instructions

THE FOLLOWING INSTRUCTIONS ARE REQUIRED TO BE MET TO INSTALL THE HEAT PUMP UNIT.

Diagram shows a heat pump unit on a stand, with a label indicating "Check the level with a spirit level!". It shows the leg and stand components, with a height of "100 mm or more".

1. Install the stand (Resin stand)

2. Fix the stand's legs with bolts (4 places)

3. Check the level with a spirit level

WHEN HIGH STANDS ARE NECESSARY

For snowy areas, use a high stand to keep the unit from getting buried in the accumulated snow.

If water cannot be drained due to freezing, DO NOT USE A DRAIN ELBOW.

Diagram illustrates the drain port, drainage ditch, and a high stand. It shows that drain water flows directly from the drain port. It warns that water may flow around the installed stand and freeze. When installing on a foundation (e.g., beams), lead the drain water to the drain using a suitable method so that it does not freeze.

When using a high stand, select a stand that can withstand the mass of the heat pump unit, and take appropriate measures to secure and prevent the unit from falling, such as fixing it using anchor bolts.

2.3.3 Attaching the Drain Elbow Plug

A drain plug is supplied in the bottom side of the heat pump unit box packaging as shown in Figure 7. Per schematic shown, safely connect the drain elbow and guide the drain hose to the ditch if required.

Figure 7: How to attach drain elbow. Diagram shows the bottom board of the heat pump unit with a drain elbow and drain hose (inner diameter 15 mm or 16 mm). It warns to be careful not to let the drain hose come off. A gap is indicated between the bottom board and the drain elbow, with a note that if drainage is insufficient, water will leak from this gap. It also shows the heat pump unit on a stand with a height of 100 mm or more, with the drain hose sloping downwards, and advises to provide a gap for the spout to indirectly drain (do not let it submerge in water).

2.3.4 Removing/Attaching the Piping Cover

For the piping cover, terminal cover, and display cover, follow the steps below to correctly detach and fix them. (Otherwise, it may cause the connecting wire to break or cause smoke and fire due to water entering)

Diagrams show the steps for removing and reattaching the Piping Cover (1 screw), Terminal Cover (2 screws), and Display Cover (6 screws) on the heat pump unit.
  1. How to remove and reattach the Piping Cover for piping and wiring. (1 Screw)
    • All the Piping Cover's attachment parts (6 places) should be attached correctly.
  2. How to remove and reattach the Terminal Cover for wiring. (2 Screws)
  3. How to remove and reattach the Display Cover for wiring. (6 Screws)

2.3.5 Heat Pump Water Piping Installation

After removing the right-side piping cover of the heat pump unit, the heat pump cold (inlet) and hot (outlet) pipes (connection ports) will be accessible as shown in Figure 9. The hot water outlet from the heat pump should be plumbed up to the top port on the tank (i.e., marked heat pump return on the tank). The cold-water inlet to the heat pump should be drawn from the bottom of the tank port (i.e., marked heat pump flow). It is recommended you minimise this, as much as possible.

There should be no valves, such as non-return valves or strainers, installed between heat pump and tank plumbing. The piping should have no restrictions. All hot pipes including the PTRV must be fully insulated.

For domestic installations, the recommended pipe is copper, with the following dimensions: 1/2" / 12.7mm. PEX piping systems not to be used.

Figure 9: Plumbing diagram of Reclaim Energy ASHP hot water system. Diagram shows the plumbing connections between the Heat Pump Unit, Storage Tank, Controller, Cold Mains, various valves (PLV, ECV, PTRV), Thermistor, and LOAD. It details port names (Hot Outlet, Cold Inlet, Heat Pump Flow Port) and materials (copper or copper alloy). It also includes a note about using a swing check valve to stop back-flow if the heat pump is installed above the tank level.
IMPORTANT: Do not supply power to the controller or heat pump unit before conducting the full air purge process as per commissioning stages, completing the wiring of heat pump power supply, and wiring of the controller.

NOTE:
  1. The maximum total distance between the heat pump and tank should not exceed 10m horizontal and 3m vertical.
  2. The heat pump can be under or above the level of tank for a distance of up to 3m.
  3. The maximum number of bends allowed is 5.
  4. Do not put any restrictive valves such as check valves or strainers in the heat pump flow/return lines. This will void warranty and affect the unit's performance.
  5. A 15 A isolator switch is recommended to isolate the heat pump unit.
  6. Sensors should be entirely pushed into the tank and securely tighten the gland.

Installation Details Cont.

THE FOLLOWING INSTRUCTIONS ARE REQUIRED TO BE MET TO INSTALL THE HEAT PUMP PIPING & DRAINING.

Diagram shows the heat pump unit piping and hot water storage for indoor installation, distinguishing between "Outdoor part" and "Indoor part".

The water supplied to the heat pump piping contains chlorine components that rise to high boiling temperatures shown below for a long period of time.

For the piping materials and connecting parts (gaskets), only use materials and parts that are guaranteed by the supply manufacturer. (Otherwise, it may cause water leakage)

Boiling temperature: Standard 63°c. Special mode 70°c, 75°c, 80°c

MATERIALS PIPE LENGTH PLACES USING AN ELBOW PIPE (ONE WAY) THICKNESS OF THE INSULATION MATERIAL
Copper Pipes: Φ12.7Standard: 5m
Maximum: up to 15m horizontal or 10m horizontal + 3m vertical		5 places or less15mm

Drainage

When the heat pump unit is operating, a maximum of approximately 300 ml of drain water is generated per minute.

To ensure drainage, make sure to observe the following points. Otherwise, the inside of the unit may corrode and become damaged.

Diagram shows the bottom board of the heat pump unit with a drain elbow and drain hose (inner diameter 15 mm or 16 mm). It warns to be careful not to let the drain hose come off. A gap is indicated between the bottom board and the drain elbow, with a note that if drainage is insufficient, water will leak from this gap. It also shows the heat pump unit on a stand with a height of 100 mm or more, with the drain hose sloping downwards, and advises to provide a gap for the spout to indirectly drain (do not let it submerge in water).

Waterproof the Installation Place

Perform drainage construction in accordance with the local laws and regulations so that water does not accumulate during draining.

  1. The drain hose must be constantly sloped downwards.
    • Do not let it pass over the stand
    • Do not let it wave
  2. Make sure an outlet gap is between the drain hose outlet and drain and indirectly drain water. (Do not let the drain hose tip submerge)
  3. Do not place the tip of the drain hose or PVC pipe directly on the ground or bury it in the ground.
    • If horizontal piping cannot be avoided, use a high stand, and make the downward slope 1/50 or more with a PVC pipe that has an inner diameter of 15 mm or more.
    • Take measures so that the inside of the pipe does not get clogged with foreign matter or frozen drain water.
  4. Do not join the drain hose with other drainpipes; install it on its own. (Otherwise, it may cause backflow)
Diagrams show correct and incorrect methods for drain hose installation: "Do not let it slope upwards", "Do not submerge the tip", "Do not place directly on the ground". It also shows a "Junction" point.
Please note that malfunctions and accidents caused by piping or drain construction will not be covered under warranty.

Instructions to Avoid Performance Failure

Diagrams illustrate steps for piping installation: 1. Remove piping cover, 2. Set gasket, 3. Hand-tighten, 4. Check for wobbling, 5. Fasten with torque wrench, 6. Apply insulation material. It also shows labels 'a' and 'b' related to piping height difference.

2.3.6 System Wiring

A licensed electrician should install the system with regards to the wiring diagram provided in Figure 10 and in accordance with local/national wiring codes. The power cord chosen must be compliant with AS/NZS 3191 and the nominal cross-sectional area should be 1.5 mm² or more.

It is notable that the heat pump must be installed on its own circuit (i.e. 15 A circuit) - AND hard wired to a 15 A ISOLATOR SWITCH. The controller has its own plug and must be connected to a separate power point. The power point supplying the controller can be fed from the heat pump circuit.

Figure 10: Wiring diagram of Reclaim Energy ASHP hot water system. Diagram shows the electrical connections between the Heat Pump Unit, Controller, Storage Tank, a 15 A AC isolator switch, and a 240v power source. It indicates connections for temperature sensor cable and RJ45 cable.
IMPORTANT: Do not supply power to the controller or heat pump unit before completing the plumbing and air purge process, as well as the wiring of the heat pump and controller.

Power Supply Terminal Block

Figure 12: How to attach the power cable. Diagrams show the preparation of a cable end with a crimp-on terminal and sleeve, and how to connect it to terminal blocks with a screw and special washer.

THE POWER CABLES NOMINAL CROSS-SECTIONAL AREA

Diagrams show how to fix the power cable to the terminal block using metal fittings and screws, or using a resin wiring clamp and screw.

2.4 Connecting V1.1 Controller to the Heat Pump

Before You Begin Installation

Case tools required: Philips 1 screwdriver for lid screws (if required to remove cover), Pozi 2 screwdriver for mounting screws.

READ THESE SAFETY PRECAUTIONS and LIMIT OF LIABILITY BEFORE YOU BEGIN

The following pages contain instructions for qualified personnel only. They involve potentially hazardous adjustments and high voltage mains wiring information.

General Safety Precautions: All servicing is to be carried out by qualified personnel only. All aspects of the installation must comply with local electrical and plumbing regulations.

WARNING: These products are not designed for use in, and should not be used for, applications which are in conjunction with items that are critical to any person's health (e.g. life support systems). In any critical installation, independent fail-safe back-up systems must always be implemented.

Installation Precautions: Make sure the controller is installed out of direct sunlight, flammable liquids or radiant heat sources. Power leads must face directly down. Ensure controller is in a safe environment for users to inspect display panel. Sensor leads should be kept 300mm (12 inches) away from mains and comms cables if run parallel to those cables. A readily accessible power disconnect device is required.

CAUTION: Dangerous Voltages may be present. No user serviceable parts. Protective enclosure must only be opened by qualified personnel. Remove ALL power sources before removing protective cover. The Reclaim Controller must be installed by a qualified person. Ensure suitable over-current protection and RCD protection for the Reclaim Controller is in place.

Installing the Reclaim Controller

Mounting

Follow these steps:

  1. Allow for the enclosure dropping 5mm (1/5 inch) from screw centres once mounted (keyhole mounting).
  2. Place the printed drill guide template (that ships with the controller) against the wall, checking for level alignment. All four mounting holes should be used with at least two firmly secured into wood or masonry.
  3. Mark and drill/screw as appropriate, leaving the heads of the screws above the surface by approximately 3mm (1/8 inch).
  4. Place the unit over the four screw heads. The unit should slide down 5mm into the 'key' slots and become secured to the wall. You might need to adjust the screw height to obtain a secure fit.

Sensor Mounting

WARNING: It is CRITICAL the sensor is mounted correctly for accurate readings, safe and efficient operation of the system and durability of the sensors.

The sensor should be fitted into a dry metal immersion 'pocket' in the hot water cylinder. Apply plenty of heat transfer compound (available from your distributor) between the sensor and the lining of the 'pocket', then seal against water ingress where the cable meets the cylinder with neutral cure silicon.

Connect to Heat Pump

Plug RJ45 cable into the heat pump.

Connect PV Remote wires (only if applicable)

A 'clean set of contacts' (passive only) is expected for this input. If not, then the controller could be damaged.

Plug in the controller to the power source

Before power up, read all safety instructions, warnings, and liability statements.

Controller will run through start-up checks including lighting all LEDs. The first display will be the time of day the controller thinks it is. Page 7 has details on how to adjust the time.

Diagram shows the internal components of the Reclaim Controller, including terminals labeled SENSOR and REMOTE.

Reclaim Controller with the Cover Removed

Image shows the Reclaim Controller with its cover removed, displaying the circuit board, LEDs, buttons (BOOST, MENU, EXIT, TEMP, ENTER), and various terminals. It also shows the external display unit.

2.5 Post Installation Inspection Checklist

A licensed installer should check for the following before leaving the installation site.

System check: Check all connections for leaks and that all components are installed, as per this manual.

Take photos of all system components with clear serial numbers for warranty purposes. This should include photos of the plumbing lines to and from the tank, heat pump and sensor port connection.

Fill out the installation record form supplied for system warranty and service issues.

Submit your Installation Record Form via Email: warranty@reclaimenergy.com.au

Complete the rebate forms for the system prior to leaving the site; this will require the installer's signature. Note these forms are not supplied with us or in this document. This is the responsibility of the customer or installer to have the rebate forms ready to fill out.

Controller Key Functions

Regardless of the version of controller received, the installer must ensure the following:

  1. The controller power cable is wired up to the power point.
  2. The controller communication cable is correctly wired up to the heat pump (a. RJ 45 cable for V1.1 controller).
  3. With reference to the controller manual:
    • The time of day is correctly selected on the controller.
    • The operational mode is set per customer requirement (i.e., default is option 1).
  4. The heat pump is purged by the controller during the commissioning of the heat pump unit (a. Press and hold the "menu" or "OK" button on the controller to initiate the 5-minute purge cycle).
  5. Before the installer leaves the site, he/she must ensure that the heat pump receives signal from the controller and the "heat up" process has been started (i.e., fan is spinning, and hot water outlet pipes are hot and have reached +60°C). If the time of day contradicts the option settings, the system will not run as required. If the option selected is outside normal time, it is recommended the heat cycle is activated using the boost function.
Diagram shows the connection of the Remote Controller to the RJ45 terminal on the PCB display.

Checklist

ITEM CHECK
GENERAL
Water supply is in accordance with water quality standard.
There is no leakage from the pipes.
There is no flammable hazardous materials around the unit.
There is no damage, deformation, or contamination to any components.
There is enough space for inspection / repair of each component?
The floor below the tank/heat pump has been properly waterproofed and can support the component.
Hot water is available with enough pressure at the taps inside the house.
HEAT PUMP
The heat pump unit has been installed properly in line with these guidelines.
The drain plug is properly closed.
The drain of heat pump unit is in the correct position to drain.
A two-step air purge operation has been completed successfully.
The wiring cover on the heat pump is correctly closed.
TANK
The operation of PTRV is normal.
The tank is fixed in place with anchor bolts if necessary.
PIPING/WIRING
The mains breaker is of the correct size and voltage Breaker can be turned off, local disconnect is in place. The movement of circuit breaker is correct.
Power supply wiring, ground wire, and "On/Off RJ45 cables" are fixed firmly.
Union joints are used so that the parts can be easily removed.
The insulation work for piping has been conducted properly.
CONTROLLER
Check all 3 connections are correctly firm and in place: 1 – communication (RJ45 patch or Modbus) cable to heat pump unit, 2 - Sensor cable to tank, 3 – Power is connected.
Correct time of day has been set up on the first powering.
Controller operational mode (OPTION modes) has been set up with reference to the customer requirements.

3.1 Heat Pump Operation and Maintenance

3.1.1. Check for the Operational Mode

It is recommended that the end user check the operation of the heat pump matches with the options setting, at least once per month. If the heat pump runs outside the settings of the active option, this needs to be escalated to the local service agent and/or Reclaim Energy representative for troubleshooting. There are some possibilities for running outside of the settings of controller such as 1) tank sensor is loose and controller does not read the correct temperature of the tank, 2) in winter, the system can undergo freeze or frost protection cycles which are additional cycles compared to normal settings, 3) Boost function has accidentally been activated.

3.1.2. Check for Air Flow/ Water Blockage

It is recommended that the drain tray of the heat pump is checked at least once a year for possible blockages. The same applies to the surrounding area of heat pump, and if plant is growing around the heat pump, that needs to be trimmed frequently to allow for the natural ventilation of the system.

3.1.3. Check for Error Codes

Apart from running outside the cycle of operational modes, should the heat pump or controller run into an issue, the controller or heat pump generates an error code, or simply the end user will run out of hot water. Each error code on the controller has its corresponding error code label on the heat pump PCB display. If there is an error code on the controller but PCB display does not show an error, this can imply that the communication cable is damaged or not working (i.e. possible controller fault or communication cable fault). Table below summarises the full list of error codes and possible solutions.

Error Code Table

The following tables detail error codes on the external controller and heat pump PCB display, along with troubleshooting processes.

ERROR CODES (REMOTE CONTROL / PCB) SUSPECTED AREA OF ISSUE INITIAL CHECKS REQUIRED TROUBLESHOOTING ERROR RESET
H9 / Outdoor temp. sensor errorOutdoor temp. sensor connectorCheck the sensor connection is properly installed/inserted fully."In case of abnormal connection, reinstall correctly. In case of defect, replace with new temp sensor"Auto
H9 / Outdoor temp. sensor errorOutdoor temp. sensorCheck the resistance value with tester.If resistance value is abnormal, replace new temp sensor.Auto
HC / "Water outlet temp. sensor error"Water outlet temp. sensor connectorCheck the sensor connection is properly installed/inserted fully."In case of abnormal connection, reinstall correctly. In case of defect, replace with new water outlet temp sensor."Auto
HC / "Water outlet temp. sensor error"Water outlet temp. sensorCheck the resistance value with tester.In case the resistance value is abnormal, replace new water outlet temp sensor.Auto
HC / "Water outlet temp. sensor remove error"PCB(Main)-Replace PCB(Main)Auto
J3 / "Discharge temp. sensor error"Discharge temp. sensor connectorCheck the sensor connector connection is properly installed/inserted."In case of abnormal connection, reinstall correctly. In case of defect, replace new discharge temp sensor."Power OFF
J3 / "Discharge temp. sensor error"Discharge temp. sensorCheck the resistance value with tester.In case the resistance value is abnormal, replace new discharge temp sensor.Power OFF
J3 / "Discharge temp. sensor remove error"PCB(Main)-Replace PCB(Main)Power OFF
J6 / "Defrost temp. sensor error"Defrost sensor connectorCheck the sensor is properly installed/ inserted fully.Install the outlet water temp. sensor properlyPower OFF
J6 / "Defrost temp. sensor error"Defrost sensorCheck the resistance value with tester."In case of abnormal connection, reinstall correctly. In case of defect, replace new defrost temp sensor." In case the resistance value is abnormal, replace new defrost temp sensor.Power OFF
J6 / "Defrost temp. sensor error"PCB(Main)-Replace PCB(Main)Power OFF
J8 / "Water inlet temp. sensor error"Water inlet temp. sensor connectorCheck the sensor is properly installed/ inserted."In case of abnormal connection, reinstall correctly. In case of defect, replace new water inlet temp sensor."Auto
J8 / "Water inlet temp. sensor error"Water inlet temp. sensorCheck the resistance value with tester.In case the resistance value is abnormal, replace new water inlet temp sensor.Auto
J8 / "Water inlet temp. sensor error"PCB(Main)-Replace PCB(Main)Auto
E6 / Unit rotation failureUnit connectorCheck unit connector is properly installed/inserted.In case of abnormal connection, reinstall correctly and, reboot HPU. "Replace PCB(Main) After PCB replacement, if the same malfunction still exists, replace HPU."Power OFF
U0 / Refrigerant cycle failureDischarge temp. sensorCheck the resistance value with tester.In case the resistance value is abnormal, replace new discharge temp sensor.Power OFF
U0 / Refrigerant cycle failureExpansion valve coilCheck the coil connector is properly connected."In case of abnormal connection, reinstall correctly. In case of defect, replace expansion valve coil."Power OFF
U0 / Refrigerant cycle failurePCB (Main) or HP unit-"Replace PCB(Main) After replacement, still exits same malfunction, replace HPU."Power OFF
E1 / PCB circuit failurePCBReset power supply."Replace PCB(Main) After replacement, if malfunction still exists replace HPU."Power OFF
E1 / Low power voltageInstallation conditionCheck the power voltage. "Confirm there is sufficient space surrounding the HPU as per the installation manual".Select a suitable power supply route or correct the source of abnormal voltage. "If insufficient space surrounding HPU reinstall into a suitable space that allows for suitable air flow volume. In case of any obstruction, remove from air flow path to the HPU."Power OFF
E1 / Low power voltageEach sensorCheck the resistance value with tester.In case the resistance value is abnormal, replace new sensor.Power OFF
E8 / Input current failurePump error"1st: Push SW2 on LED panel for more than 5 seconds to enforce air-purge mode (displayed "AP") Then operate the pump automatically. 2nd: Push SW3 on LED panel for more than 5 seconds to enable monitor mode for observing the pump RPM. 3rd: Push SW4 for a short time to display actual pump RPM (Check with No.17)""Check the number on the display.is normal (between 3000 to 4000 RPM) condition: 30 to 40 = Infers PCB problem, replace PCB. Abnormal: Less than 10 (shows less than 1000 RPM) = Replace pump"Power OFF
E8 / Input current failureExpansion valve coilCheck the coil connector is properly connected."In case of abnormal connection, reinstall correctly. In case of defect, replace expansion valve coil"Power OFF
E8 / Input current failurePCB (Main) or HP unit-"Replace PCB(Main) After replacement, if the same malfunction still exists, replace HPU."Power OFF
H8 / Current transformer failurePCB(Main)Reset power supply."Replace PCB(Main) After replacement, if the same malfunction still exists replace HPU."Power OFF
L5 / Output over current failureDischarge temp. sensorCheck the resistance value with tester.In case the resistance value is abnormal, replace new discharge temp sensor.Power OFF
L5 / Output over current failureExpansion valve coilCheck the coil connector is properly connected."In case of abnormal connection, reinstall correctly. In case of defect, replace expansion valve coil"Power OFF
L5 / Output over current failurePCB (Main) or HP unitCheck if system frequently restarts and stops - may need to reset power supply.Replace PCB(Main) After replacement, if the same malfunction still exists, replace HPU.Power OFF
U2 / Unspecified voltage failureLow power voltageCheck the power voltage.Select a suitable power supply route or correct the source of abnormal voltage.Power OFF
U2 / Unspecified voltage failureOverpower voltageCheck the power voltage.Select a suitable power supply route or correct the source of abnormal voltage.Power OFF
U2 / Unspecified voltage failurePCB(Main)Reset power supply."Replace PCB(Main) After replacement, if the same malfunction still exists replace HPU."Power OFF
HJ / "Heating water circulation circuit"Each sensor"Check there are no internal obstructions to water flow. E.g., Air ingress, contamination, or scale."If issue persists after obstructions to water flow are cleared, reboot HPU. In case the resistance value is abnormal, replace new sensor.Power OFF
HJ / "Heating water circulation circuit"Expansion valveCheck the coil connector is properly connected."In case of abnormal connection, reinstall correctly. In case of defect, replace expansion valve coil"Power OFF
HJ / "Heating water circulation circuit"PCB (Main) or HP unit-"Replace PCB(Main) After replacement, if the same malfunction still exists, replace HPU."Power OFF
EC / Outlet water temp. failureWater outlet temp. sensorCheck the resistance value with tester.In case the resistance value is abnormal, replace new water outlet temp sensor.Power OFF
EC / Outlet water temp. failurePump"Feel pump to ensure it is operating"."Replace pump if not operational or broken."Power OFF
EC / Outlet water temp. failurePCB (Main) or HP unit-"Replace PCB(Main) After replacement, if the same malfunction still exists replace HPU."Power OFF
H1 / Inlet water temp.failureWater inlet temp. sensorCheck the resistance value with tester.In case the resistance value is abnormal, replace new water inlet temp sensor.Power OFF
H1 / Inlet water temp.failureTank temp.sensorCheck the sensor connector is connected properly."In case of abnormal connection, reinstall correctly. In case of defect, replace new water inlet temp sensor." In case the resistance value is abnormal, replace new tank temp sensor.Power OFF
H1 / Inlet water temp.failurev1.1 controllerCheck wiring connection to the controller."In case of abnormal connection, reinstall correctly. In case of defect, replace new tank temp sensor."Power OFF
E9 / Water pump failurePump connectorCheck the sensor connector is properly connected."In case of wire damage or disconnection, reinstall correctly or replace wiring. In case of V1.1 controller defect, replace."Power OFF
E9 / Water pump failurePump error"1st: Push SW2 on LED panel for more than 5 seconds to enforce air-purge mode (displayed "AP") Then operate the pump automatically. 2nd: Push SW3 on LED panel for more than 5 seconds to enable monitor mode for observing the pump RPM. 3rd: Push SW4 for a short time to display actual pump RPM (Check with No.17)""Check the number on the display.is in a normal condition: 30 to 40 (Between 3000 to 4000 RPM) = Infers PCB problem, replace PCB. Abnormal: Less than 10 (equals less than 1000 RPM) = Replace pump"Power OFF
E9 / Water pump failurePCB(Main)-"Replace PCB(Main) After replacement, if the same malfunction still exists, replace HPU."Power OFF
E9 / Water pump failureTankAfter filling the storage tank, Air-Purge the system."After ensuring the connection is properly installed and removing any obstructions, if the same malfunction still exists, replace fan-motor."Power OFF
E7 / Fan motor failureFan motorCheck the motor connector is properly connected. Check for any obstruction on fan blades or motor shaft."After ensuring the connection is properly installed and removing any obstructions, if the same malfunction still exists, replace fan-motor."Power OFF
E7 / Fan motor failurePCB(Main)Except above mentioned.Replace PCB (Main)Power OFF
F3 / Unit overheating failureDischarge temp. sensorCheck the resistance value with tester.In case the resistance value is abnormal, replace new discharge temp sensor.Power OFF
F3 / Unit overheating failureExpansion valve coilCheck the coil connector connection proper or poor/disconnection"In case of abnormal connection, reinstall it correctly. In case of defect, replace expansion valve coil"Power OFF
F3 / Unit overheating failurePCB (Main) or HP unitExcept above mentioned."Replace PCB(Main) After replacement, if the same malfunction still exists, replace HPU."Power OFF
Eg-8Tank Temperature sensor not detected (open circuit)
Eg-9Tank Temperature sensor fault (short circuit)Note: Temperature control mode is disabled for Eg-8 and Eg-9 faults, however boost mode is still operational.
Eg-10Tank has not heated to 59°C in the last 24 hours. This error will clear if the boost button is pressed or the tank heats to 59°C or moreThis error will only appear 24 hours after any of these actions:
• The last sensor reading of 59°C (or more), resets the timer every time this temperature is measured
• Boost button is pressed
• There was a power up sequence		This is a good way of alerting the user if the heat pump is not heating properly

3.2 Hot Water Storage Tank

3.2.1 PTRV

Any system design must allow a means of pressure release at no more than 850kPa, using a PTRV. The PTRV must have a downward direction copper pipe connected that is open to the atmosphere, running the expelled hot water or air to a safe, frost free and appropriate drainage location. From time to time the PTRV may discharge small amounts of water under normal operations (1L for every 50 Liters heated). If the tank is installed indoors, a safety tray must be installed beneath the hot water tank to safely collect any water expelled from the PTRV.

Check PTRV every 6 months. Lift lever to test the manual relief. Water should emerge from the relief valve. It is recommended that the manual relief is tested every 6 months, to flush out any deposits that may accumulate under the seal.

3.2.2 Anode

The anode on the glass lined (vitreous enamel) tanks is sacrificial; however, it is designed to protect the vitreous enamel lined cylinder in most public reticulated water supplies for five years after which time it should be checked as part of an annual service. It must be noted however that some water supplies can exhibit chemical qualities that are not suitable for the standard anode supplied with glass-lined water heater. Where the Total Dissolved Solids (TDS) is greater than 600mg/L or less than 40mg/L, the installed anode may be unsuitable for use to protect your water heater. In these circumstances, a plumber or authorized service person should be contacted to fit the correct (hard water) anode. Please note that warranty becomes void if the TDS value exceeds 2500 mg/L. Check the tank anode (for glass-lined tanks only) initially 5 years, then every 3 years, thereafter.

3.2.3 Hydrogen Build Up

Glass lined (vitreous enamel) tanks are fitted with a Magnesium anode to provide corrosion protection for the tank from the storage water. Small quantities of hydrogen gas can be released by the anode, which generally, remains dissolved in the water and flushed away as hot water is used from the tank. Dependant on the water quality, there may be a degree of hydrogen build-up in the tank if the water heater has not been in use for two or more weeks or if water appears milky in color. To resolve the build-up of hydrogen within the tank, "purge" the tank for approximately 30 seconds from the lever on the PTRV. Stand clear of PTRV discharge piping outlet.

WARNING: Ensure there are no open flames or ignition sources close to the tank.

3.2.4 Draining the Water Heater

Reclaim system does not require drainage unless the system is left without power or unused for holidays or maintenance reasons. If drainage is required, the below steps must be followed:

  1. Turn off the electricity supply to the water heater.
  2. Turn off the cold-water supply to the water heater at the isolating valve.
  3. Gently operate the lever on the PTRV to release the pressure in the water heater.
  4. Disconnect the cold-water inlet union and attach a drain hose to the water heater.
  5. Gently operate the easing lever on the PTR Valve to let air into the water heater and allow water to escape through the hose.

Warning and Caution

The degree of harm and damage that occur with incorrect use is categorised and explained below.

Procedures to be followed are explained by the following graphic symbols.

Symbol: Exclamation mark inside a triangle. Text: "CAUTION". Description: "These are "Procedures that may lead to minor injuries and damage to property"."
Symbol: Circle with a line through it and an exclamation mark. Text: "PROHIBITED". Description: "Procedures (Prohibited items) that must not be done."
Symbol: Exclamation mark inside a circle. Text: "MANDATORY". Description: "Procedures (Mandatory items) that must be done."

MANDATORY

PROHIBITED

Warning

PROHIBITED

MANDATORY

PROHIBITED

Models: REHP-KY-CO2-160GL, REHP-KY-CO2-250GL, REHP-KY-CO2-315GL, REHP-KY-CO2-400GL, REHP-KY-CO2-250SSEW, REHP-KY-CO2-315SSEW, REHP-KY-CO2-315DX, REHP-KY-CO2-160GL CO2 Heat Pump Hot Water System, REHP-KY-CO2-160GL, CO2 Heat Pump Hot Water System, Hot Water System, Water System

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