Rheem YF Series Owner's Manual And Installation Instructions
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Rheem YF Series Owner's Manual And Installation Instructions

Rheem YF Series Owner's Manual And Installation Instructions

Commercial water to water heat pump water heater
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Owners Guide
and
Installation Instructions
YF Series Commercial Water to Water
Heat Pump Water Heater
WARNING: THIS WATER HEATER CONTAINS LOW BURNING VELOCITY
MATERIAL
WMKA21549
This water heater must be installed and serviced by a qualified person.
Please leave this guide with a responsible officer.

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  • Page 1 Owners Guide Installation Instructions YF Series Commercial Water to Water Heat Pump Water Heater WARNING: THIS WATER HEATER CONTAINS LOW BURNING VELOCITY MATERIAL WMKA21549 This water heater must be installed and serviced by a qualified person. Please leave this guide with a responsible officer.
  • Page 2 This water heater may be protected by one or more patents or registered designs. TRADEMARKS ® Registered trademark of Rheem Australia Pty Ltd. Trademark of Rheem Australia Pty Ltd. NOTE: Every care has been taken to ensure accuracy in preparation of this publication.

  • Page 3: Table Of Contents

    Rheem warranty. We recommend you read pages 8 to 27, and the terms of the Rheem warranty on pages 4 to 7. The other pages are intended for the installer but may be of interest.

  • Page 4: The Rheem Warranty - General

    The decision of whether to repair or replace a faulty component is at Rheem’s sole discretion. If you require a call out and we find that the fault is not covered by the Rheem warranty, you are responsible for our standard call out charge. If you wish to have the relevant component repaired or replaced by Rheem, that service will be at your cost.
  • Page 5 This warranty only applies to the original and genuine Rheem water heater in its original installed location and any genuine Rheem replacement parts.

  • Page 6: What Is Covered By The Rheem Warranty For The Water Heaters Detailed In This Document

    3. WHAT IS COVERED BY THE RHEEM WARRANTY FOR THE WATER HEATERS DETAILED IN THIS DOCUMENT Rheem will repair or replace a faulty component of your water heater if it fails to operate in accordance with its specifications as follows:...
  • Page 7 The Rheem warranty (set out above) is in addition to any rights and remedies that you may have under the Australian Consumer Law.

  • Page 8: Safety And Warnings

    If the electrical conduit to the water heater is damaged, it must be replaced by a qualified person in order to avoid a hazard. Phone Rheem Service or their nearest Accredited Service Agent / Centre to arrange for an inspection.

  • Page 9: Relief Valves

    • Servicing of a water heater must only be carried out by qualified personnel. Phone Rheem Service or their nearest Accredited Service Agent / Centre. • Only a person qualified to install or service a water heater can drain the water heater, if this is required.

  • Page 10: Installation Notes

    If water does not flow freely from the drain line when the lever is lifted, then the water heater must be checked. Phone Rheem Service or their nearest Accredited Service Agent / Centre to arrange for an inspection.
  • Page 11 ▪ The power supply wires are to be directly connected to the terminal block, with no excess wire loops inside the front cover. The temperature rating of the power supply wires insulation must suit this application. • In compliance with AS/NZS 60335.2.40-2019 and/or ISO 5149.3-2014 with regards to A2L material.

  • Page 12: About Your Water Heater

    MODEL TYPE ® Congratulations for choosing a Rheem commercial water to water (W2W) heat pump water heater. The Rheem W2W heat pump water heater is designed for outdoor or indoor installation. HOW HOT SHOULD THE WATER BE? minimum recommended...

  • Page 13: Temperature Adjustment

    ABOUT YOUR WATER HEATER these areas. The risk of scald injury will be reduced and still allow hotter water to the kitchen, laundry and other areas requiring sanitising temperatures. TEMPERATURE ADJUSTMENT Set Point Quick Setting Press ‘prg’ from the main display screen and the Set Point page will appear. Cursor will be on the set temperature.

  • Page 14: To Turn Off The Water Heater

    ABOUT YOUR WATER HEATER Do not use aerosols, stain removers and chemicals near the water heater whilst it is working. Gases from some aerosol sprays, stain removers and chemicals are corrosive to the materials used in the heat pump system. Do not store swimming pool chemicals, household or industrial cleaners, etc., near the water heater.

  • Page 15: Does The Water Chemistry Affect The Water Heater

    The refrigerant must not be vented to atmosphere. Phone your nearest Rheem Service Department or Accredited Service Agent (or Service Centre in NZ) to arrange for an inspection.

  • Page 16: How Your Water Heater Works

    12C and maximum of 35°C. Operation with higher cold side inlet temperature is possible, however must be engineered in consultation with Rheem. The efficiency of the water heater is relative to the building chilled water circuit temperature and the incoming hot side (potable) water temperature.

  • Page 17: Operation In Fault Mode

    HOW YOUR WATER HEATER WORKS To prevent this damage, the pumps for both sides of the water heater are sized and supplied by Rheem and the heat pump is supplied with a flow switch sensor and a low temperature cut out switch.

  • Page 18: Mains Pressure

    HOW YOUR WATER HEATER WORKS Warning: Rheem will not be responsible for higher utility bills due to excessive use of auxiliary boost heater. It is the customers’ responsibly to monitor the system regularly for its correct operation. Rheem recommends monitoring via BMS (modules supplied separately).
  • Page 19 The system can be connected to BMS. Modbus RS485 is provisioned on the controller for a single 16kW heat pump. Modbus RS485, BACnet MS-TP or BACnet TCP/IP Ethernet interface cards, supplied by Rheem, are required for any other configuration. Contact Rheem for further information on BMS.

  • Page 20: Maintenance Requirements

    MAINTENANCE REQUIREMENTS WARNING: THIS WATER HEATER CONTAINS LOW BURNING VELOCITY MATERIAL MINOR MAINTENANCE EVERY SIX MONTHS It is recommended minor maintenance be performed every six (6) months. Minor maintenance can be performed by a responsible officer. The minor maintenance includes: •...
  • Page 21 Isolate power to heat pump and check all electrical connections for signs of overheating due to poor connection. Check for vibration or excessive noise from compressor and hot and cold water pumps. 10. Check refrigerant pressures and adjust refrigerant charge if required. 11.

  • Page 22: Water Supplies

    Where the saturation index is less than –1.0, the water is very corrosive and the Rheem warranty does not apply to the water heater. In a corrosive water supply, the water can attack copper parts and cause them to fail.
  • Page 23 WATER SUPPLIES Where the pH is less than 6.0 the Rheem warranty does not apply to the water heater. pH is a measure of whether the water is alkaline or acid. In an acidic water supply, the water can attack stainless steel parts and cause them to fail.

  • Page 24: Save A Service Call

    Is the alarm light flashing RED on heat pump controller? If the alarm light is flashing RED, check the alarm by pressing the alarm button. Phone your nearest Rheem Service Department or Accredited Service Agent (or Service Centre in NZ) to inform about the alarm.

  • Page 25: Water Too Hot

    Service Department or Accredited Service Agent to arrange for an inspection. • Water heater size Do you have the correct size water heater for your requirements? The sizing guide in the sales literature and on the Rheem website (www.rheem.com.au or www.rheem.co.nz) suggest average sizes that may be needed.
  • Page 26 Heat pump circulator has failed If the heat pump circulator has failed, the heat pump will not operate and may trip on a fault. Phone your nearest Rheem Service Department or Accredited Service Agent (or Service Centre in NZ) to arrange for an inspection.

  • Page 27: High Electricity Bills

    Prolonged periods of low ambient temperature will decrease the efficiency of the system and increase running costs. IF YOU HAVE CHECKED ALL THE FOREGOING AND STILL BELIEVE YOU NEED ASSISTANCE, CALL YOUR NEAREST RHEEM SERVICE DEPARTMENT OR ACCREDITED SERVICE AGENT.

  • Page 28: Installation

    INSTALLATION THIS WATER HEATER IS FOR INDOOR OR OUTDOOR INSTALLATION, THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING. INSTALLATION STANDARDS The water heater must be installed: • by a qualified person, and • in accordance with the installation instructions, and •...

  • Page 29: Indoor Installation

    INSTALLATION COMPONENTS The heat pump water heater system is modular and comprises three main components: the heat pump water heater, storage tanks and primary circulators. An auxiliary booster and/or circulator may also be employed as part of the system. The water heater must not be operated until all components are assembled.
  • Page 30 INSTALLATION A2L Room Ventilation Requirements...

  • Page 31: Water Heater Location

    INSTALLATION WATER HEATER LOCATION All models are designed to be installed outdoors. Indoor installation is allowable if the requirements of the flow chart on page 30 are met. The water heater should be installed close to the storage tanks and its position chosen with noise, safety and service in mind.

  • Page 32: Tank Water Supply

    INSTALLATION TANK WATER SUPPLY If the storage tank is supplied with water from a tank supply and a pressure pump system is not installed, then the bottom of the supply tank must be at least 1 m above the highest point of the hot water plumbing system, including the storage tank.

  • Page 33: Circulated Hot Water Flow And Return System

    A 3-way valve may be used to divert circulated hot water flow and return between the boosting water heater and the heat pump storage depending on the temperature in the heat pump storage tank. Consult Rheem Technical Sales for more information.
  • Page 34 A temperature limiting device cannot be installed in circulated hot water flow and return pipe work unless the device is designed for such application, such as Rheem Guardian. The tempered water from a temperature limiting device cannot be circulated. Where a circulated hot water flow and return system is required in a building, a temperature limiting device can only be installed on a dead leg, branching off the circulated hot water flow and return pipe.

  • Page 35: Saddling - Pipe Work

    These circuits are in close proximity to the jacket and rupturing of the circuit may occur. Note: If the heat pump is damaged as a result of attaching pipe clips or saddling to the jacket, any resultant faults will not be covered by the Rheem warranty.
  • Page 36 INSTALLATION Typical W2W Heat Pump Installation with Recirculation...
  • Page 37 INSTALLATION Typical W2W Heat Pump Installation with Inline Boost...
  • Page 38 INSTALLATION Typical W2W Heat Pump Installation with Guardian Warm Water...
  • Page 39 INSTALLATION Dimensions and Technical Data- W2W 16kW Models 95501600/ 9550160V...
  • Page 40 INSTALLATION Dimensions and Technical Data- W2W 32kW Models 95503200 / 9550320V...
  • Page 41 INSTALLATION CLEARANCES- WATER TO WATER HEAT PUMP MODELS Sides Unit All Water to Water Heat Pumps Front Back Water Connections Side RHS Side Clearance above unit required for service personnel to stand...

  • Page 42: Heat Pump And Tank Assembly

    HEAT PUMP AND TANK ASSEMBLY HEAT PUMP AND STORAGE TANKS The heat pump water heater system is modular and comprises three main components: the heat pump water heater, storage tanks and primary circulators. An auxiliary booster and/or circulator and/or 3 way valve may also be employed as part of the system.
  • Page 43 HEAT PUMP AND TANK ASSEMBLY A2L Room Ventilation Requirements...
  • Page 44 HEAT PUMP AND TANK ASSEMBLY WATER HEATER LOCATION This water heater can be installed indoors or outdoors. Indoor installation is allowable if the requirements of the flow chart on page 43 are met. The water heater should be installed close to the storage tanks and its position chosen with noise, safety and service in mind.

  • Page 45: Storage Tanks

    HEAT PUMP AND TANK ASSEMBLY STORAGE TANKS Rheem Commercial storage tanks are employed to store the hot water generated ® by the heat pump. The tanks must be manifolded using the Equa-Flow manifold system to ensure even distribution of the stored energy. Up to ten tanks can be manifolded together in a single bank.
  • Page 46 Equa-flow manifolds on storage tanks and heat pumps, at 1.2m/sec velocity. If this specification is exceeded consult Rheem before continuing with the installation. Multiple heat pumps MUST be installed using Equa-Flow® principles to ensure the demand on each heat pump (or storage tank) in the bank is the same as any other.
  • Page 47 HEAT PUMP AND TANK ASSEMBLY Chilled Water / Condenser Water Cold Water Flow Circuit to Heat Pump Cold Water Return from Heat Pump Low Pressure Loss Header Arrangement AUXILIARY WATER HEATER It may be necessary to install an auxiliary water heater under the following conditions: •...
  • Page 48 HEAT PUMP AND TANK ASSEMBLY temperature for kitchen and laundry use), an auxiliary water heater must be installed in-series with the storage tanks. ie, the hot water outlet from the storage tanks must feed into the inlet of the auxiliary water heater(s). Note: Where RT and RW storage tanks are used, boosting in the top portion of the storage tank is equivalent to boosting in series.

  • Page 49: Manifold Installations

    MANIFOLD INSTALLATIONS The Rheem commercial heat pump water heater is designed to be installed with storage tanks on a single manifold or multiple manifolds if required, using the ® Rheem Equa-Flow manifold system. The Equa-Flow principle will function with water heaters in line, around a corner or in rows back to back (refer to the diagrams on pages 50 to 51).
  • Page 50 MANIFOLD INSTALLATIONS Manifold Arrangement HOT WATER FLOW Hot Manifold Assembly FLOW FROM HEAT PUMPS Primary Hot Water Flow Manifold Assembly RETURN TO HEAT PUMPS Cold Manifold Assembly...
  • Page 51 RT/RW 1000 1550 1300 2700 1300 RT/RW 2000 Back to Back Manifold 1700 1450 3000 1450 RT/RW 3000 RT4000 1850 1600 3300 1600 RT5000 INSTALLATION LAYOUT MINIMUM DIMENSIONS 2050 1800 3700 1800 MODEL INSTALLATION DIMENSIONS – MULTIPLE RHEEM STORAGE TANKS...

  • Page 52: Connections - Plumbing

    CONNECTIONS – PLUMBING CONNECTION SIZES Model 16kW 32kW Heat pump water heater inlet connection R1¼ BSPM R2 BSPM Heat pump water heater outlet connection R1¼ BSPM R2 BSPM Condensate drain connection 20mm O.D All plumbing work must be carried out by a qualified person and in accordance with the Plumbing Standard AS/NZS 3500.4 and local authority requirements.

  • Page 53: Expansion Control Valve

    CONNECTIONS - PLUMBING EXPANSION CONTROL VALVE Local regulations may make it mandatory to install an expansion control valve (ECV) in the cold water line to the water heater system. In other areas, an ECV is not required unless the saturation index is greater than +0.4 (refer to “Water Supplies”...

  • Page 54: Connections - Electrical

    CONNECTIONS – ELECTRICAL The power supply to the water heater must not be switched on until the water heater is filled with water and a satisfactory megger reading is obtained. Megger Reading When a megger test is conducted on this water heater, then the following should be noted.
  • Page 55 Two (2) ferrites are supplied in the bag containing the sensor cables. Follow the instructions supplied with the ferrites to fit the ferrites on the cable. Electrical Data Table Model 16kW 32kW Electrical Connection 3 Phase / 380 - 415 Volts / 50 Hz Max Current per Phase (running, excl pumps) 9.6A 19.3A...
  • Page 56 Tank Sensor Installation Connect one of the supplied temperature sensors to the connection terminal on the heat pump marked “Tank Sensor”. • Run out the sensor to the nearest storage tank. • For 610 and RW series tanks, a thermostat well is supplied within each tank.
  • Page 57 In this case, only one tank sensor and building flow temperature sensor is required, which are connected to the heat pump designated as the Main. Alternatively, each 16kW or 32kW heat pump can operate independently in which case each tank sensor and building flow temperature sensor must be connected and fitted as described above.
  • Page 58 Depending on the installation, an auxiliary boost element may be supplied with an RT or RW series storage tank. If an auxiliary boost element is supplied by Rheem, remove bridging wire at the terminals marked ‘A7 and A9’ behind the element controller cover and connect the terminal ‘A7’...
  • Page 59 CONNECTIONS - ELECTRICAL Picture of heat pump terminal strip Auxiliary Element Control by Individual Heat Pumps – All models Where multiple auxiliary boost elements are required, and the number of auxiliary boost elements matches the number of heat pumps, each element may be interlocked with an individual heat pump directly using the method described above.
  • Page 60 CONNECTIONS - ELECTRICAL Auxiliary Boost Heater (external to storage tank) Depending on the installation, an auxiliary heater and/or boost pump may be supplied. Refer to Application Guide for auxiliary boost options. In the heat pump enclosure, terminals marked “SA”, “N” and “GND” provide 240V to control the auxiliary heater and/or auxiliary pump or multiple boost elements or allow one boost heater to be controlled by multiple heat pumps depending on the system design.
  • Page 61 16kW heat pump is directly connected to the BMS. Interface cards, supplied by Rheem, are required for BACnet MS-TP or BACnet TCP/IP Ethernet, or if multiple 16kW model heat pumps are connected to BMS...
  • Page 62 CONNECTIONS - ELECTRICAL If an interface card is required, connect to Rheem IQ control panel as shown in the diagram below. • If the system is comprised of single or multiple standalone heat pumps, each heat pump will have its own BMS card and/or connection.
  • Page 63 CONNECTIONS - ELECTRICAL 16KW HEAT PUMP WIRING DIAGRAM – 955016 MODELS...
  • Page 64 CONNECTIONS - ELECTRICAL 32KW HEAT PUMP WIRING DIAGRAM – 955032 MODELS...
  • Page 65 CONNECTIONS - ELECTRICAL Controller and Display Information...
  • Page 66 Press ‘esc’ to return to the main display screen. The factory setting is 61⁰C. The set point can be adjusted up to 65⁰C depending on site suitability after consulting with Rheem. Menu Item A. 01 - On/Off – Press ’enter’ to access change. Press ‘up’ or ‘down’ to turn unit on or off.
  • Page 67 CONNECTIONS - ELECTRICAL Enabling Scheduler to ‘Yes’ will open a 2 page which will allow the user to program specified operating times on a 7-day basis. E.g.: Clock Schedule Mon 00:00 to 00:00 Tue 00:00 to 00:00 Pressing the ‘down’ key will reveal a 2 page in the Clock Scheduler: –...
  • Page 68 CONNECTIONS - ELECTRICAL D. Input/output View – Displays the actual readings as follows: Hot Enter Temp: Potable water temperature entering and leaving the condenser heat exchanger Hot Leave Temp: Cold enter Temp: Non-potable/chilled water temperature entering and leaving the evaporator heat exchanger Cold Leave Temp: Compressor 1 –...
  • Page 69 CONNECTIONS - ELECTRICAL – Displays the last 64 alarms (DLR 001 ~ DLR 064 Alarm History screens) and the following information at time of alarm: - Alarm (DLR) number, time, date, alarm type, event (start or stop) Alarms can be cleared by pressing the ‘Alarm Bell’ key. F.
  • Page 70 CONNECTIONS - ELECTRICAL Service Settings Working Hour Set Prove Adjustment iii. Thermoregulation (for multiple heat pump installation, change the no. of compressor and other settings from here.) Parameter Sub Parameter Main Setpoint 65.0°C Screen N/A Thermoregulation 01 Differential 4.0°C Screen N/A Dead band 0.5°C Screen N/A...
  • Page 71 CONNECTIONS - ELECTRICAL % compressor in alarm to activate Screen N/A boost Boost act. Delay Screen N/A Water temp. delta 10.0⁰C Thermoregulation 11 Screen N/A too big trip point Leaving water Hi 75.0⁰C Screen N/A temp trip point Leaving water Hi 65.0⁰C Screen N/A temp reset point...
  • Page 72 CONNECTIONS - ELECTRICAL Circ pump B (Auto/off/on) Boost heat (Auto/off/on) Reset off/on/auto over rides (no/yes) vii. Speed up times (no/yes) viii. Manual initialisation of anti Legionella (no/yes) For more information, please refer to the service manual for heat pumps...

  • Page 73: Commissioning

    COMMISSIONING To Fill And Turn On The Water Heater The power supply to the water heater and controller must not be switched on until the water heater is filled with water and a satisfactory megger reading is obtained. Warning: This water heater contains electronic equipment and 500 V insulation tests must only be conducted between actives and earth and between neutral and earth.
  • Page 74 Note: The water heater may not turn on immediately when it is first switched on, if it is switched on within 20 minutes to 2 hours of it having been switched off at the isolating switch, or the heat pump has just completed a heating cycle. The water heater will wait until the conditions for start-up are favourable in order to protect the compressor from damage.
  • Page 75 Make sure all the LAN cables between heat pumps are disconnected. On each heat pump in turn, go to the Service menu (Service>Service Settings- password 0022>Thermoregulation). Refer to page 65 to see the chart for navigating Service menu and page 70 for Thermoregulation section. Whilst in the home screen on control panel, press Esc to enter the main menu.
  • Page 76 Main Parameter Sub Parameter While setting While setting Main unit Sub unit Out Air sensor NONE Thermoregulation Tank Temp sensor NONE Bld Temp sensor NONE Unit OF Measure: (C, bar) (C, bar) Comp. Config: SEPARATE SEPARATE Thermoregulation User type: COMMERCIAL COMMERCIAL Blackout delay No of Compressors...
  • Page 77 When all settings have been set, switch OFF all the heat pumps. Interconnect the heat pumps as shown above by using the LAN cables. Determine the 1st heat pump as MAIN. Route the cables neatly to prevent damage and trip hazards. Do not route across access panels.
  • Page 78 Commissioning Procedure- BMS Configuration Before commencing the commissioning procedure, ensure the ‘Building Management Systems (BMS/BAS)’ installation procedure has been completed as stated on page 61. • If the system is comprised of single or multiple standalone heat pumps, perform this procedure for each heat pump. Each heat pump will have its own BMS card.
  • Page 79 Protocol: CAREL Speed: 19200 (this value is set from factory to communicate between heat pump and BMS card) Open the heat pump enclosure and check the BMS card. The BACnet MS-TP card features a button (PUSHBUTTON) and two indicator lights (STATUS LED and NETWORK LED). Functions of the Push Button: When starting up the BACnet MS-TP, this is used to select, for network communication, whether to use the factory parameters or the user parameters.
  • Page 80 3. Configuration: BMS Interface card BACnet TCP/IP Ethernet Go to BMS configuration (will time out after 5 minutes if no buttons pressed) Change the settings for BMS configuration from the display menu as mentioned below. Address: No change required (address is irrelevant for this card). Protocol: CAREL Speed: 19200 (this value is set from factory to communicate between heat pump and BMS card)
  • Page 81 Refer to the parameter tables below for BMS: COIL: Index Size Variable Variable Description Data Default Direction Name Type Value DummyBol_01 LP switch (raw) - Din01 Bool NoUnits Read DummyBol_02 HP switch (raw) - Din02 Bool NoUnits Read DummyBol_03 Flow switch Hot side (raw) - Din03 Bool NoUnits Read...
  • Page 82 Index Size Variable Variable Description Data Default Direction Name Type Value remote / maintenance enable of Comp5_En Bool NoUnits ReadWrite compressor 5 remote / maintenance enable of Comp6_En Bool NoUnits ReadWrite compressor 6 DeviceStatusComp1 Actual status of compressor 1 Bool NoUnits Read DeviceStatusComp2...
  • Page 83 Index Size Variable Variable Description Data Default Direction Name Type Value Comp_HR_Res2 Compressor 2 Hour run reset Bool NoUnits ReadWrite Comp_HR_Res3 Compressor 3 Hour run reset Bool NoUnits ReadWrite Comp_HR_Res4 Compressor 4 Hour run reset Bool NoUnits ReadWrite Comp_HR_Res5 Compressor 5 Hour run reset Bool NoUnits ReadWrite...
  • Page 84 Index Size Variable Variable Description Data Default Direction Name Type Value Comp6OL Compressor 6 O/L Bool NoUnits Read TDelta_AL1 Temperature Delta Alarm 1 (Hot side) Bool NoUnits Read TDelta_AL2 Temperature Delta Alarm 2 (Hot side) Bool NoUnits Read TDelta_AL3 Temperature Delta Alarm 3 (Hot side) Bool NoUnits Read...
  • Page 85 Holding Registers: Index Size Variable Variable Description Data Default Direction Name Type Value BMS_DummyReal_01 Entering Water temperature (Hot side) - Ain01 NoUnits Read BMS_DummyReal_02 Leaving Water temperature (Hot side) - Ain02 NoUnits Read BMS_DummyReal_03 Outdoor coil temperature - Ain03 NoUnits Read BMS_DummyReal_04 Suction temperature - Ain04...
  • Page 86 Index Size Variable Variable Description Data Default Direction Name Type Value BMS_EW_LoReset Entering Water Lo Reset Temperature NoUnits Read BMS_Comp_HiTrip Compressor Discharge Temperature Trip NoUnits Read BMS_BLDC_spd BLDC Compressor speed % NoUnits Read BMS_EEV_pos EEV speed % NoUnits Read BMS_tfr_0_set Off Peak setpoint (target) temperature NoUnits ReadWrite...
  • Page 87 Index Size Variable Variable Description Data Default Direction Name Type Value BMS_SpaPrb Spa probe temperature - Pool / Spa mode NoUnits ReadWrite BMS_LP_P_set Low Pressure trip point NoUnits ReadWrite BMS_HP_P_set High Pressure trip point NoUnits ReadWrite BMS_De_Ice_init de-ice initialisation temperature NoUnits ReadWrite BMS_De_Ice_Thrsh...
  • Page 88 Index Size Variable Variable Description Data Default Direction Name Type Value 5035 trfw_09 type of tariff - timeband 9 week end NoUnits ReadWrite 5036 trfw_10 type of tariff - timeband 10 week end NoUnits ReadWrite 5037 trfw_11 type of tariff - timeband 11 week end NoUnits ReadWrite 5038...
  • Page 89 Index Size Variable Variable Description Data Default Direction Name Type Value Priorit 5125 PoolPrbSel Pool probe selection yPrb NoUnits ReadWrite Delay after Compressor request is sent to Safety 5126 CompStart_DT Seconds ReadWrite block 5127 HeatLPLockDT LP lock out delay for Hesat Start ReadWrite Seconds 5128...
  • Page 90 Index Size Variable Variable Description Data Default Direction Name Type Value 5170 De_Ice_Init_time de-ice initialisation cumulative time Minutes ReadWrite 5171 de_ice_DT_MinRub Comp min run time before defrost Minutes ReadWrite 5172 De_Ice_Max Maximum duration of a de-ice cycle Minutes ReadWrite 5173 De_Ice_DT_OnOn Delay between 2 consecutive de-ice cycles Minutes...

  • Page 91: Draining The Water Heater

    To Turn Off The Water Heater If it is necessary to turn off the water heater on completion of the installation, such as on a building site or where the premises are vacant, then: • Switch off the electrical supply at the isolating switch to the water heater. •...

  • Page 92: Trouble Shooting

    Alarm light on heat pump controller If the alarm light is flashing RED, check the alarm by pressing the alarm button. Phone your nearest Rheem Service Department or Accredited Service Agent (or Service Centre in NZ) to inform about the alarm.
  • Page 93 • Heat pump starts then turns off soon after This could be caused by: Insufficient water flow rate through heat exchanger. Check pipe sizing per chart, check obstructions, check lines and pump are bled, check pump is operating, check temperature rise across inlet and outlet. Note: Tanks and heat pumps are to be manifolded in Equa-Flow.
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  • Page 96 Revision Date: Nov 2023 122667A...

This manual is also suitable for:

955016009550160v955032009550320v

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