PRODUCT UPDATE V2 RELEASE

COVERING MODEL NUMBERS (FOR STC CLAIMS):

• REHP-C02-160GL-V2
• REHP-C02-250GL-V2
• REHP-C02-315GL-V2
• REHP-C02-400GL-V2
• REHP-C02-160SST-V2
• REHP-C02-250SST-V2
• REHP-C02-315SST-V2
• REHP-C02-315SSQ-V2
• REHP-C02-400SST-V2
• REHP-C02-250SSEW-V2
• REHP-C02-315SSEW-V2
• REHP-C02-315DX-V2

DIGITAL COPY OF OUR MANUALS?

For a full set of PDF manuals and brochures, visit: reclaimenergy.com.au/downloads OR simply scan the QR Code below (QR code omitted as per instructions).

IMPORTANT

This appliance is not intended for use by persons (including children) with reduced physical, sensory 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

This appliance may deliver water at high temperature. Refer to the Plumbing Code of Australia (PCA), local requirements and installation instructions to determine if additional delivery temperature control is required. For continued safety of this appliance it must be installed, operated and maintained in accordance with the manufacturer's instructions.

Issue 12 | Sept 2025

Document Sections:

• Product Update Overview
• First Time Commissioning Procedure
• System Description
• Installation Details
• Checklist
• Operation & Maintenance

FEB 2023 PRODUCT SUPPLY CHANGES

As of February 2023, Reclaim Energy will launch the next generation of heat pump with some substantial improvements. Unless specified below, all other parameters/specifications are the same between V1 and V2 models. The two key changes are summarised in Table A and Table B below:

Table A: Key updates on the Reclaim Energy heat pump.

Controller Comparison:

V1 - DISCONTINUED

Image Description: V1 controller with a green PCB, labeled RCE-HP-CONT-V1. It has buttons for EXIT, MENU, ENTER, BOOST, and a display showing temperature and status icons.

COMES WITH:

• Power cable
• Temperature sensor cable
• RJ45 cable

V1.1

Image Description: V1.1 controller with a white casing and a digital display showing '58°C'. It has buttons for MENU, ENTER, EXIT, and BOOST.

COMES WITH:

• Power cable
• Temperature sensor cable
• RJ45 cable

V2

Image Description: V2 controller with a white casing and a digital display showing '59°C'. It has buttons for OK, EXIT, BOOST, and UP/DOWN arrows.

COMES WITH:

• Power cable
• Temperature sensor cable
• Modbus cable

Table B: Key updates on the Reclaim Energy controllers.

Mobile App Integration

Connection to Wi-Fi and the mobile app is OPTIONAL for the end user. Full functionality of controller can be used manually or via the FREE Reclaim Energy app.

FREE APP RECLAIM ENERGY

Available for iOS & Android mobile phones.

Image Description: A hand holding a smartphone displaying the Reclaim Energy mobile app interface, showing Wi-Fi connection setup, device information, and timer settings. The app is shown connected to a V2 controller.

Download on the App Store, GET IT ON Google Play

KEY CHANGES ON THE SYSTEM MODEL NUMBERS

It is notable that the V2 system model numbers are different to the previously supplied system model numbers. The following codes must be used for rebate applications such as STC, ESC, and VEECs. In terms of STC changes between V1 and V2 models, there has been slight improvement of about 1-3 STCs for different model IDs depending on the system model number and zone.

The latest up to date values should be checked here:

• STC values: rec-registry.gov.au/rec-registry/app/calculators/swh-stc-calculator
• VEEC values: veu-registry.vic.gov.au/Public/Calculator/VEECCalculator.aspx
• ESC values (estimates only): reclaimenergy.com.au

Table C: Updates on the system model IDs.

FIRST TIME COMMISSIONING PROCEDURE

HOW TO USE V1.1 OR V2 CONTROLLERS WITH THE V2 HEAT PUMP

The V2 heat pump default mode is with V1.1 controller. As such, if V1.1 controller is received, simply connect the controller to the RJ45 port on the PCB display of the heat pump and follow the general commissioning process.

If a V2 controller is received, the following steps on the heat pump are required before the V2 controller can be used:

STEP 1: Connection of correct cable to the right terminal

• V1.1 controller: Use the RJ45 terminal block.
• V2 controller: Use the Modbus terminal block.

STEP 2: Change the mode on the PCB display from 1 to 2

1. Press and hold the UP (▲) and DOWN (▼) buttons.
2. The display will show "r1" & "1".
3. Change the value of "r1" to "2" by pressing the RIGHT (►) or LEFT (◄) button.
4. Press and hold UP (▲) and DOWN (▼) buttons to complete the setting when the display returns to its original state (e.g., a blank display).
5. To confirm "r1" & "2" is established, repeat step 1 and then proceed to step 4 to exit.

Diagram Description: Illustration showing how to attach/detach the piping cover. It indicates the location of the screw, the piping cover, and the tabs.

HEAT PUMP COMMISSIONING

STEP 1

• Ensure the system plumbing complies with the provided diagram.

STEP 2

• Ensure the system wiring complies with the provided diagram. Pay special attention to sensor insertion on the lower level of the tank; the sensor must be fully inserted.

IMPORTANT NOTE: DO NOT plug in the heat pump or connect the controller communication cable yet.

STEP 3

• Ensure the tank is filled and all air is purged by opening a tap inside the house. Purging is complete when water runs freely from the tap.
• Turn the tap off. The cylinder is now purged.

STEP 4

• Purge the circulating pump by loosening the brass 8mm nut on the underside of the heat pump until water runs freely, then tighten it again. The circulating pump is now purged.

STEP 5: Commission the controller

• Select the correct time of day.
• Select the desired operational mode (options 1-6).
• Power up the controller and connect the communication cable to the heat pump.

STEP 6: Initiate Auto Purge and System Start-up

• Ensure the system controller is turned on and the time is displayed.
• Ensure the heat pump isolator is in the ON position and power is supplied to the heat pump unit.
• On the controller, press and hold the "menu" or "OK" button (depending on controller model) until "purge" is displayed and flashing (approx. 5 seconds).
• Release the button.
• After approximately 4 seconds, the on-board circulating pump should activate.

SYSTEM START UP SEQUENCE

The system will initiate the following sequence:

1. The system runs a 5-minute purge to push air from the heat pump unit into the tank. The unit fan will not be operating during this phase.
2. After the 5-minute purge, the pump stops, and the fan begins to turn slowly. The system will not heat until it can maintain a consistent 63°C (this may take up to 4 minutes).
3. The unit fan then operates normally, and the circulating pump circulates the 63°C water through the tank.

Due to the smart top-down heat return system, users will have 50L of hot water within 20 minutes and a full tank in approximately 3 hours. After 15 minutes, check the heat pump return connection to the tank; it should be hot to touch. This indicates successful installation.

CRITICAL NOTES

NOTE 1

Remember to drain and purge the heat pump during commissioning to prevent system failure. The "drain plug" is shown below. Also, remember to drain from hot water taps inside the house.

Diagram Description: Illustration showing the drain plug and drain elbow on the heat pump unit.

NOTE 2

The sensor probe must be fully inserted and secured (using a gland or silicon plug) in the bottom tank sensor. The sensor cable has a rubber sleeve. Push the sensor completely in, then push the cable sleeve until only 6 mm protrudes. Tighten the gland to secure the sensor.

NOTE 3

The maximum horizontal distance between the heat pump and tank is 10 m, and the maximum vertical distance is 5 m (with a maximum of 3 bends).

NOTE 4

The bottom tank sensor MUST be connected as part of the installation process.

Diagram Description: A schematic of the Reclaim Energy ASHP hot water system. It shows the heat pump unit, storage tank, controller, and connections for cold mains, hot outlet, and circulation ports. Key components like PLV, ECV, PTRV, and thermistor are indicated. It also notes that where the heat pump is installed more than 1m above the tank, a swing check valve is recommended to prevent backflow.

SYSTEM DESCRIPTION

This section provides a brief overview of the Air-Source CO2 Hot Water Pump’s main components and functionality.

1.1 MAIN COMPONENTS

The system components include:

• Heat pump Unit
• Storage Tank with PTRV
• Controller
• Heat pump mounting legs

1.2 SYSTEM OPERATION

The CO2 heat pump unit draws cold water from the bottom of the tank. It uses ambient air heat to heat the CO2 refrigerant and produce hot water. The hot water (fixed at 63°C) returns to the top of the tank, ensuring rapid hot water recovery and good stratification. As the system delivers water exceeding 50°C, a tempering valve is mandatory for bathroom use. Untempered water may be used in kitchens and laundries as per AU/NZS AS 3500 plumbing code.

An external controller manages the heat pump's operation based on a tank sensor (55-69% level). The heat pump activates if the tank temperature drops below 59°C (first cycle) or 37°C (second cycle) and runs until the sensor level reaches 59°C. The system is designed to meet Australian standards for legionella requirements. The heat pump's "turn off" logic is adjustable via built-in timer settings for subsequent heating cycles.

The default timer setting is continuous operation, but installers can adjust it based on homeowner needs. More details are in Section 2.

At ambient temperatures below 5.5°C, frosting may occur. The heat pump enters defrost mode to protect itself, running for no more than 15 minutes. During defrost, the pump and fan stop, and the evaporator is defrosted by the hot refrigerant. Once a set temperature is reached, defrost stops, and normal operation resumes. More details are in Section 6.

The "operational window" refers to the heat pump's "hot water production" mode, configurable via controller options. In cold climates, the heat pump may enter anti-freeze or defrost mode. Defrost cycles occur during the operational window to clear ice from the evaporator (air-CO2 heat exchanger) when ambient temperatures are below approximately 5°C. During defrost, the fan and pump stop, and high-temperature refrigerant melts the frost. This cycle takes about 5 minutes and may repeat, totaling up to 20 minutes.

The anti-freeze cycle operates outside the operational window to protect the water circuit (piping between tank and heat pump) from freezing. If ambient and water pipe temperatures drop below 3°C, the heat pump enters anti-freeze mode, operating as a normal heating cycle with the fan and pump running. Anti-freeze stops when water inlet temperature reaches 56°C or ambient temperature reaches 6°C.

INSTALLATION DETAILS

This section covers the preparation and installation process for the Reclaim Air-Source CO2 Heat Pump system.

2.1 SITE INSPECTION AND INSTALLATION PREPARATION

Installation must be performed by a licensed plumber or electrician according to local standards and regulations, including:

• AS/NZS 3000 (Electrical): System requires 240v, 50 Hz, single phase, with a 15 Amp circuit breaker and a disconnection device.
• AS/NZS 3500 (Plumbing): Heat Pump component must be installed outdoors.
• AS/NZS 2712.2007 (Solar and Heat Pump Water Heaters): Design and Construction.
• AS/NZS AS 3498-2009 (Water heaters and hot-water storage tanks).

Installers must adhere to occupational health and safety guidelines and relevant industry associations. Reading and understanding this manual is mandatory. For queries, contact Reclaim Energy at 1300 38 38 15.

This system is designed solely for domestic hot water applications; space heating is not supported and will void the warranty.

The recommended installation sequence is:

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

Site Preparation Recommendations:

• Install the system as close as possible to hot water draw-off points to minimize heat loss from piping.
• Maintain a maximum distance of 10 m between the controller/timer, tank, and heat pump.
• Install the heat pump unit horizontally on the ground next to the tank.
• The heat pump unit must be installed outdoors; the tank can be indoors.
• Ensure adequate airflow behind the heat pump unit (minimum 0.15 m clearance at the back) as it draws in ambient air. Do not cover the back of the unit.
• A dedicated 15 Amp circuit is required for the Heat Pump, and a separate GPO for the controller.
• Mounting surfaces for the tank and heat pump must be horizontal.
• Refer to Figure 2 for clearance requirements (350 mm front, 600 mm back).
• The tank must be installed on a concrete slab.
• Water supply quality must meet the specifications of the heat pump and storage tank.

Water Quality Threshold Values (Table 1)

Contact your local water authority or conduct a water test if unsure about water quality. Poor water quality can reduce component lifespan. In "hard water" areas (>200 mg/L or ppm), a water softening device is required. Reclaim Energy glass-lined tanks have a sacrificial anode; anode inspection is required after 5 years, then every 3 years.

2.1.1 COMPONENT INSPECTION

Before installation, verify all components are present:

• Heat pump unit
• Tank + PTRV
• Controller module
• Heat pump mounting frames

Other required components must be supplied by the installer.

2.1.2 COMPONENT TRANSPORTATION

• Note "THIS WAY UP" arrows on boxes.
• Strap and secure all boxes to prevent movement during transit.
• Transport tanks upright; do not stack them.
• Handle products with care; transportation damage is not covered by warranty.

2.1.3 UNPACKING OF THE COMPONENTS

• Unpack components carefully to avoid damage.
• Avoid using sharp blades or knives that could scratch surfaces.

2.2 HOT WATER STORAGE TANK

2.2.1 INSTALLATION LOCATION

• Install the storage tank vertically upright at ground or floor level as per manufacturer guidelines.
• Secure tanks on a concrete or plastic mounting slab (see Figure 1).
• Locate the tank close to frequent draw-off points (e.g., bathroom, kitchen). A hot water circulation loop on a timer may be considered for long draw-off distances.
• If a ring main system is installed, the finishing tank should be installed after the Reclaim heat pump tank, with the hot outlet supplying the top of the finishing tank and the ring main return feeding the bottom.
• Ensure the tank does not obstruct windows or exits. Provide adequate clearance for servicing and maintenance. The PTRV must be easily accessible.
• Position the tank to allow for anode removal.
• If installed indoors, the storage tank must be in a properly drained safe tray to contain potential leaks, complying with AS/NZS 3500.4 and local codes.
• Tanks installed outdoors must be on a suitable concrete slab.
• Ensure the tank label is clearly visible.

Figure 1 Description: Illustration of concrete or heavy-duty plastic slabs for placing under the storage tank.

2.3 HEAT PUMP

Before plumbing or wiring, follow these sequential steps:

2.3.1 INSTALLATION LOCATION AND SPACING

• Install the heat pump unit horizontally on a flat surface.
• Ensure installation complies with spacing requirements shown in Figure 2.

2.3.2 MOUNTING

Reclaim Energy ASHP units MUST be installed on the ground using supplied mounting frames or on the wall using brackets. A plumber must have access underneath the unit for servicing and purge protocols.

Figure 2 Description: Diagram showing required space for heat pump installation. 'A' indicates obstruction clearance (350mm for <1.2m height, 600mm for >1.2m height). 'B' and 'C' indicate 150mm clearances. Note 1: PCB must be accessible. Note 2: Installation next to AC units is acceptable if exhaust air is not absorbed by the other unit and does not contact piping.

Diagram Description: Side and front views of the heat pump unit with dimensions indicated in mm. Key components like the Propeller Fan, PCB (MAIN), Water Heat Exchanger, Evaporator, and Drain Elbow are labeled.

2.3.2 MOUNTING (CONT.)

Diagram Description: Detailed dimensions of the heat pump unit in mm. Labels include: Connection port of drain elbow (bottom), elongated hole, Sensor (temp. outdoor), Terminal block, Inlet grill (side), Drain plug, Outlet grill, Drain plug of pump, Circulation port (cold water), Circulation port (hot water), Inlet grill (back), Piping cover removed.

Coastal Area Installation:

For coastal areas, install in locations that:

• Are less exposed to sea water and sea breeze.
• Have good drainage.
• Allow salt deposits to be washed away by rainwater.
• Are 500m or more away from the sea.

2.3.3 ATTACHING THE DRAIN ELBOW PLUG

A drain plug is supplied in the heat pump unit's packaging. Connect the drain elbow safely and guide the drain hose to a ditch if required.

Diagram Description: Illustration showing how to attach the drain elbow. It indicates the Bottom Panel, PUSH action, Drain Hose (ID: 16mm), and Drain Elbow.

Figure 4 Description: Image of ground mounting frames.

Figure 5 Description: Image of wall mounting brackets.

Figure 6 Description: Image of a heat pump drain elbow plug supplied with the unit.

2.3.4 REMOVING/ATTACHING THE PIPING COVER

REMOVAL

1. Remove the screw.
2. Slide the piping cover downwards to remove it.

ATTACHMENT

1. Fit the piping cover by aligning its 5 tabs with the unit.
2. Slide the piping cover upwards and secure it with the screw.

Figure 8 Description: Illustration showing how to attach/detach the piping cover, indicating the screw, tabs, and piping cover.

2.3.5 HEAT PUMP WATER PIPING INSTALLATION

After removing the right-side piping cover, the heat pump's cold (inlet) and hot (outlet) pipes are accessible (see Figure 9).

• Connect the hot water outlet from the heat pump to the top port of the tank (marked "heat pump return").
• Connect the cold-water inlet to the heat pump from the bottom port of the tank (marked "heat pump flow").
• Minimize piping length between the heat pump and tank.
• Do not install valves like non-return valves or strainers between the heat pump and tank plumbing, as this will void the warranty and affect performance.
• Ensure all hot pipes, including the PTRV, are fully insulated.
• For domestic installations, use copper pipes (1/2" / 12.7mm). PEX piping systems are not recommended.

NOTE:

1. Maximum total distance between heat pump and tank: 10m horizontal, 5m vertical.
2. Heat pump can be up to 5m above or below the tank level.
3. Maximum of 4 bends allowed in piping.
4. Do not use restrictive valves (e.g., check valves, strainers) in flow/return lines; this voids warranty and impacts performance.
5. A 15A isolator switch is recommended for the heat pump unit.
6. Ensure sensors are fully pushed into the tank and tightened to the gland.

Figure 9 Description: Plumbing diagram of the Reclaim Energy ASHP hot water system, showing connections between the Heat Pump Unit, Storage Tank, and Cold Mains. Key components like PLV, ECV, PTRV, and Thermistor are indicated.

2.3.6 SYSTEM WIRING

A licensed electrician must install the system according to the wiring diagram (Figure 10) and local/national wiring codes. The power cord must comply with AS/NZS 3191 and have a nominal cross-sectional area of 1.5 mm² or more.

The heat pump requires its own circuit (15A) and must be hard-wired to a 15A ISOLATOR SWITCH. The controller has its own plug and requires a separate power point. The controller's power point can be fed from the heat pump circuit.

Diagram Description: Wiring diagram of the Reclaim Energy ASHP hot water system. It shows the Heat Pump Unit, Storage Tank, and Controller, with connections for the 15A AC isolator switch, 240v power cables, temperature sensor cable, and communication cables (RJ45 for V1.1, Modbus for V2).

IMPORTANT: Do not supply power to the controller or heat pump unit before completing the process explained in sections 6.5.3 and 6.5.4.

2.4 CONNECTING V1.1 OR V2 CONTROLLER TO THE HEAT PUMP

The communication protocol differs between V1.1 and V2 controllers:

• For V1.1 controllers, use the RJ45 cable wired to the heat pump.
• For V2 controllers, use the Modbus cable wired to the heat pump.

Diagram Description: Close-up view of the heat pump's internal wiring terminals. It shows the V1.1 controller connecting to the RJ45 terminal on the PCB display, and the V2 controller connecting to the Modbus terminal block. Instructions for wiring Modbus cables are provided.

Diagram Description: Illustrations showing how to attach the power cable to the heat pump terminal block, including crimped cable ends, sleeves, terminal blocks, and screws.

CONTROLLER KEY FUNCTIONS

Regardless of the controller version, installers must ensure:

1. The controller power cable is correctly wired to the power point.
2. The controller communication cable is correctly wired to the heat pump (RJ45 for V1.1, Modbus for V2).
3. Controller settings are correct:
• Time of day is set accurately.
• Operational mode is set per customer requirements (default is Option 1).
• For V2 controllers: Wi-Fi function is enabled, and the end user has successfully connected to the house Wi-Fi and the Reclaim Energy mobile app.
4. The heat pump is purged by the controller during commissioning. Press and hold "menu" or "OK" to initiate the 5-minute purge cycle.
5. Before leaving the site, ensure the heat pump receives a signal from the controller and the "heat up" process has started (fan spinning, hot water outlet pipes hot, reaching +60°C). If the time of day conflicts with option settings, initiate a boost function to ensure communication is established.

2.5 POST INSTALLATION INSPECTION CHECKLIST

Before leaving the installation site, a licensed installer should verify the following:

• System check: Verify all connections are leak-free and components are installed per the manual.
• Take photos of all system components for warranty purposes, including plumbing lines, heat pump, and sensor port connections.
• Record the Tank Serial Number.
• Record the heat pump Serial Number.
• Record the controller Serial Number.
• Complete the installation record form for system warranty and service issues.
• Submit the Installation Record Form via email to warranty@reclaimenergy.com.au.
• Complete the rebate form prior to leaving the site, requiring the installer's signature. (This form is not provided; customers must have it ready).

CHECKLIST

OPERATION AND MAINTENANCE

3.1 HEAT PUMP

3.1.1. CHECK FOR THE OPERATIONAL MODE

It is recommended that the end user checks the heat pump's operation against the set options at least once per month. If the heat pump operates outside the active option settings, escalate to the local service agent or Reclaim Energy representative for troubleshooting. Potential causes for deviation include: 1) a loose tank sensor affecting temperature readings, 2) winter freeze or frost protection cycles, or 3) accidental activation of Boost function.

3.1.2. CHECK FOR AIR FLOW/WATER BLOCKAGE

It is recommended to check the heat pump's drain tray for blockages at least once per year. Similarly, ensure the surrounding area is clear of plant growth that could impede natural ventilation.

3.1.3. CHECK FOR ERROR CODES

If the heat pump or controller encounters an issue, it may display an error code or result in a lack of hot water. Each controller error code corresponds to a label on the heat pump PCB display. If an error code appears on the controller but not the PCB display, it may indicate a damaged or faulty communication cable.

The following tables summarize error codes and troubleshooting steps:

ERROR CODE TABLE (Part 1)

ERROR CODE TABLE (Part 2)

ERROR CODE TABLE (Part 3)

3.2 HOT WATER STORAGE TANK

3.2.1 PTRV

All system designs must include a pressure release mechanism (PTRV) set at no more than 850kPa. The PTRV must have a downward copper pipe connected to the atmosphere, directing expelled hot water or air to a safe, frost-free drainage location. The PTRV may discharge small amounts of water during normal operation (1L per 50L heated). If the tank is indoors, a safe-tray must be installed beneath it to collect any expelled water. Check the PTRV every 6 months by lifting the manual relief lever; water should discharge. Operating the manual relief every 6 months is recommended to flush out deposits.

3.2.2 ANODE

The anode in Glass-lined (vitreous enamel) tanks is sacrificial, designed to protect the enamel for five years in most public water supplies. It should be replaced as part of an annual service. Water supplies with Total Dissolved Solids (TDS) greater than 600mg/L or less than 40mg/L may require a different anode. Contact a plumber or authorized service person for the correct "hard water" anode. Warranty is void if TDS exceeds 2500 mg/L. Check the tank anode (glass-lined tanks only) after 5 years, then every 3 years.

3.2.3 HYDROGEN BUILD UP

Glass-lined tanks have a Magnesium anode for corrosion protection. Small amounts of hydrogen gas released by the anode usually remain dissolved and are flushed away with hot water use. If the water heater is unused for two or more weeks, or if the water appears milky, hydrogen build-up may occur. To resolve this, "purge" the tank for approximately 30 seconds using the PTRV lever. Stand clear of the PTRV discharge piping.

3.2.4 DRAINING THE WATER HEATER

Drainage is only required if the system is left without power or unused for holidays/maintenance. Follow these steps:

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

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

THIS PAGE WAS INTENTIONALLY LEFT BLANK

THIS PAGE WAS INTENTIONALLY LEFT BLANK

THIS PAGE WAS INTENTIONALLY LEFT BLANK