Rheem 864 Series Owner's Manual And Installation Instructions
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Rheem 864 Series Owner's Manual And Installation Instructions

Continuous flow gas indoor water heater
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Installation Instructions
The ONLY suitable flue parts are certified Rheem coaxial flue components
Unless a certified Rheem coaxial flue system, venting to the outside through a certified Rheem
terminal, is installed in accordance with the Installation Instructions.
If a loud continued vibration occurs during operation
This water heater must be installed and serviced by a qualified person.
Owner's Guide
and
Continuous Flow
Gas Indoor Water Heater
864, 866 series
627 models
INSTALLER:
carrying the following label:
DO NOT use any other type of flue parts.
Carefully follow the Installation Instructions.
OPERATOR:
DO NOT OPERATE THIS WATER HEATER:
Please leave this guide with the householder.

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Summary of Contents for Rheem 864 Series

  • Page 1 OPERATOR: DO NOT OPERATE THIS WATER HEATER:  Unless a certified Rheem coaxial flue system, venting to the outside through a certified Rheem terminal, is installed in accordance with the Installation Instructions.  If a loud continued vibration occurs during operation This water heater must be installed and serviced by a qualified person.
  • Page 2 Rheem Australia Pty Ltd, Rheem New Zealand Limited or Paloma Co., Ltd. Rheem Australia Pty Ltd and Rheem New Zealand Limited are the suppliers of the Rheem range of continuous flow gas water heaters, manufactured by Paloma Co., Ltd., a world leader in water heater technology and manufacture.

  • Page 3: Table Of Contents

    CONTENTS HOUSEHOLDER - We recommend you read pages 4 to 44. The other pages are intended for the installer but may be of interest. About Your Water Heater ......................4 Temperature Control ......................... 11 Temperature Control – Standard ..................... 12 Temperature Control –...

  • Page 4: About Your Water Heater

    GAS BOOSTING FOR A SOLAR WATER HEATER The 864 series water heater may be installed as an in-series gas booster to a solar water heater. Water stored in the solar storage tank passes through the in-series gas booster when a hot tap is opened. The in-series gas booster is for heating water at times of low solar energy gain, such as during cloudy or rainy weather, or during colder months.
  • Page 5 We recommend and it may be required by regulations that an approved temperature limiting device be fitted into the hot water piping to the bathroom and ensuite when an 864 series water heater is installed. This will keep the water temperature below 50°C – AU or 55°C – NZ at the bathroom and ensuite. The risk of scald injury will be reduced and if no controllers are installed and the preset outlet temperature setting has not been adjusted below 55°C or if a Kitchen controller is installed, still allow hotter water to the kitchen and laundry.
  • Page 6 Rheem. Phone Rheem Service or their nearest Accredited Service Agent / Centre to arrange for an inspection. The Rheem warranty may not cover faults if relief valves or other safety devices are tampered with or if the installation is not in accordance with these instructions.
  • Page 7 Note: The major service and routine replacement of any components, if required, are not included in the Rheem warranty. A charge will be made for this work. Only genuine replacement parts should be used on this water heater. The major service includes the following actions: ...
  • Page 8 ABOUT YOUR WATER HEATER CIRCULATED HOT WATER FLOW AND RETURN SYSTEM A Rheem 864 627 model continuous flow water heater can be installed as part of a circulated hot water flow “Circulated Hot Water Flow and Return System” and return system in a building. Refer to on page 50 for further °C...
  • Page 9 The frost protection system will be rendered inoperable if electrical power is not available at the water heater. Damage caused by freezing due to the unavailability of power at the water heater is not covered “Terms of the Rheem Warranty” by the Rheem warranty (refer to on page 102). ...
  • Page 10 In New Zealand, the installation must conform to Clauses G11, G12 and H1 of the New Zealand Building Code. Warning: Temperature controllers must not be fitted to this water heater (864 series) if it is installed as an in-series gas booster with a solar water heater system because water at a temperature much higher than the controller setting can be delivered.

  • Page 11: Temperature Control

    Warning: Baths should not be left unattended whenever young children are present. Warning: Temperature controllers must not be fitted to this water heater (864 series) if it is installed as an in-series gas booster with a solar water heater system because water at a temperature much higher than the controller setting can be delivered.

  • Page 12: Temperature Control - Standard

    TEMPERATURE CONTROL – STANDARD °C STANDARD CONTROLLER FUNCTIONS If one or more controllers are installed, at least one must be on for the water heater to operate. If all controllers °C are off, the water heater will only deliver cold water. on / off ( ) button –...
  • Page 13 TEMPERATURE CONTROL – STANDARD STANDARD CONTROLLER Rheem priority light in use light up () display panel button °C water volume symbol down () button water volume operating light on / off operating light water volume button °C on / off...
  • Page 14 5. On a building fitted with a temperature limiting device such as a tempering valve and where an 864 series water heater is installed without a separate untempered hot water line to the kitchen, laundry or other non- ablution area, although the Kitchen controller will be able to display temperatures above 50°C and the water...
  • Page 15 The temperature adjustment is made by pressing the up () button or down () button.  The maximum temperature setting for the controllers are: Kitchen Bathroom 60°C – AU, 55°C – NZ 864 series 50°C 866 series 50°C 50°C ...
  • Page 16 It has a minimum temperature setting of 37°C and a maximum temperature setting of:  60°C – AU 55°C – NZ 864 series  866 series 50°C The Kitchen controller does not have priority if a Bathroom controller is on.
  • Page 17 TEMPERATURE CONTROL – STANDARD To operate the Kitchen controller: Turn off the Bathroom controller(s)  If a temperature setting is displayed and the priority light is not glowing, it is necessary to turn off the Bathroom controller(s) to gain priority. ...
  • Page 18 If a hot tap is open in another bathroom, the water will be delivered at: °C For an 864 series model – up to 50°C if a  temperature limiting device is installed in the hot pipe to the bathroom or up to 60°C – AU or 55°C –...
  • Page 19 TEMPERATURE CONTROL – STANDARD To operate a Bathroom controller: Turn off the Kitchen controller  If a temperature setting is displayed and the priority light is not glowing, it is advised to turn off the Kitchen controller. °C Refer to the notes on the Bathroom controllers on page 18.
  • Page 20 TEMPERATURE CONTROL – STANDARD WATER VOLUME FUNCTION The water volume function is designed to warn by an alarm (beeping sound), that a certain volume of water has been delivered from the water heater. It does not stop either the flow of or the heating of water. This function is useful if a bath is being filled, or measuring the water consumed by the use of a shower.
  • Page 21 °C TEMPERATURE CONTROL – STANDARD Turn off the alarm Press the water volume ( ) button to turn off the alarm.  °C The water volume operating light goes out and 0 x 10L is displayed momentarily on the controller. The temperature setting of the controller with priority is then displayed.

  • Page 22: Temperature Control - Deluxe

    TEMPERATURE CONTROL – DELUXE °C °C DELUXE CONTROLLER FUNCTIONS If one or more Deluxe controllers are installed, at least one must be on or the Bath Fill function activated for °C the water heater to operate. If all Deluxe controllers and the Bath Fill function are off, the water heater will only deliver cold water.
  • Page 23 TEMPERATURE CONTROL – DELUXE bath fill water volume display panel – The selected bath fill water volume is displayed in litres on all Deluxe controllers. The selected bath fill water volume is displayed whenever the Bath Fill function is on “Bath-Fill Function”...
  • Page 24 TEMPERATURE CONTROL – DELUXE VOICE PROMPT AND OPERATING TONE The Deluxe controllers have a series of voice prompts and operating tones which sound during certain operations. The voice prompts and operating tones sound from all Deluxe controllers, regardless of which Deluxe controller is being operated at the time.
  • Page 25 TEMPERATURE CONTROL – DELUXE Adjusting the Volume of the Voice Prompt and Operating Tone The volume of the voice prompt and the operating tone can be adjusted to a level comfortable for you. The volume of the voice prompt and the operating tone can be adjusted independently of each other. The volume levels on a Deluxe controller are adjusted independently of another Deluxe controller.
  • Page 26 5. On a building fitted with a temperature limiting device such as a tempering valve and where an 864 series water heater is installed without a separate untempered hot water line to the kitchen, laundry or other non- ablution area, although the Kitchen Deluxe controller will be able to display temperatures above 50°C and the...
  • Page 27 The minimum temperature setting for each type of controller is 37°C.  The maximum temperature setting for the controllers are: Kitchen Bathroom 60°C – AU, 55°C – NZ 864 series 50°C 866 series 50°C 50°C  Each press of the up () button will increase the temperature setting by one increment.
  • Page 28 It has a minimum temperature setting of 37°C and a maximum temperature setting  60°C – AU 55°C – NZ 864 series  866 series 50°C The Kitchen Deluxe controller does not have priority (PRIORITY light is off) if a Bathroom Deluxe controller is Notes on the Kitchen Deluxe controller: ...
  • Page 29 TEMPERATURE CONTROL – DELUXE To operate the Kitchen Deluxe controller: Turn off the Bathroom Deluxe controller(s) If a temperature setting is displayed and the  PRIORITY light is not glowing, it is necessary to turn °C off the Bathroom Deluxe controller(s) to gain priority. BATH (l) °C Refer to the notes on the...
  • Page 30  If a hot tap is open in another bathroom, the water will be delivered at: for an 864 series model – up to 50°C if a temperature limiting device is installed in the hot pipe to the bathroom or up to 60°C – AU or 55°C –...
  • Page 31 TEMPERATURE CONTROL – DELUXE To operate a Bathroom Deluxe controller: Turn off the Kitchen Deluxe controller  If a temperature setting is displayed and the PRIORITY and on / off operating lights are not °C glowing, it is advised to turn off the Kitchen Deluxe BATH (l) controller.
  • Page 32 °C TEMPERATURE CONTROL – DELUXE BATH FILL FUNCTION The Bath Fill function is designed to allow the water heater to deliver a selected volume of water at a selected temperature. The Bath Fill function commences when the bath fill ( ) button is on and a hot tap is opened.
  • Page 33 BATH (l) TEMPERATURE CONTROL – DELUXE °C Close the front panel on the Deluxe controller. Turn on the Bath Fill function Rheem Press the bath fill ( ) button.  On all Deluxe controllers:  The bath fill operating light will glow.
  • Page 34 TEMPERATURE CONTROL – DELUXE Bath Fill Function – Explanatory Notes To operate the Bath Fill function: Turn off all Deluxe controllers It is advised to turn off all Deluxe controller(s) before  activating the Bath Fill function. °C Refer to the notes on the Bathroom Deluxe BATH (l) controllers...
  • Page 35 The set volume will be remembered when the ) button is next pressed “on”. bath fill ( °C Close the front panel on the Deluxe controller. Rheem Turn on the Bath Fill function Press the bath fill ( ) button. ...
  • Page 36 TEMPERATURE CONTROL – DELUXE Open the hot tap. The operating light will glow on all Deluxe controllers. °C 1 2 0 Measurement of the water flow at the water heater will commence when the hot tap is opened. BATH (l) Notes: ...
  • Page 37 TEMPERATURE CONTROL – DELUXE °C Turning Off Bath Fill Function During Its Operation The bath fill operation can be interrupted by pressing the bath fill ( ) button before completion of the bath fill °C operation. If it is necessary to turn off the Bath Fill function before the operation is complete, during Step ...
  • Page 38 TEMPERATURE CONTROL – DELUXE °C Notes on the Bath Fill function: °C  The Bath Fill function can be set, turned on and turned off at any of the Deluxe controllers.  The Deluxe controllers do not require to have priority (PRIORITY light glowing) or be on in order to set the bath fill water volume or bath fill temperature or to turn the bath fill ( ) button on.
  • Page 39 TEMPERATURE CONTROL – DELUXE Opening a Second Hot Water Tap During Bath Fill Operation  The bath fill water volume is measured as the water flows through the water heater. If more than one hot tap is open, the Bath Fill function will measure the total water volume drawn from all taps and the expected water volume from the first tap will be decreased.
  • Page 40 TEMPERATURE CONTROL – DELUXE Operation of the Bath Fill function whilst a Deluxe Controller has priority It is recommended the Bath Fill function be set and operated with the Deluxe controllers turned off (refer to Step 1 on page 34). However, if a Deluxe controller has PRIORITY during the setting and operation of the Bath Fill function, then the following additional events occur: During...

  • Page 41: Water Supplies

    In a corrosive water supply, the water can attack copper parts and cause them to fail. Where the saturation index is less than –1.0, the water is very corrosive and the Rheem warranty does not apply to a copper heat exchanger in a continuous flow water heater.

  • Page 42: Save A Service Call

    Check the items below before making a service call. You will be charged for attending to any condition or fault, °C “Terms of the Rheem Warranty” which is not related to manufacture or failure of a part (refer to on page 102).
  • Page 43  Collector area is too small For most installations, the number of solar collectors recommended in Rheem literature has been proven to provide the required solar energy to meet the average family needs. However, in some circumstances, it may be necessary to install an additional solar collector.
  • Page 44 If the error code persists, take note of the numerical code, turn off the hot tap and turn off the controller(s). Phone Rheem Service or their nearest Accredited Service Agent / Centre to arrange for inspection.

  • Page 45: Installation - Water Heater

    The 864 series of water heater may be installed as an in-series gas booster to a solar water heater. For information relating to the function and operation of the solar water heater, refer to the Owner’s Guide and Installation Instructions supplied with the solar water heater.
  • Page 46 VENTILATION This water heater is to be installed with a Rheem coaxial flue system. The kit enables a room sealed installation, drawing air for combustion from outside of the building.
  • Page 47 Damage to the water heater caused by freezing of the pipe work to or from the water heater is not covered under the Rheem warranty. Refer to AS/NZS 3500.4 for precautions to be taken for installations in frost prone areas. The water heater is not suitable for installation in areas where the ambient temperature falls below - 20°C (including wind chill factor).
  • Page 48 Gas Booster for a Solar Water Heater The temperature limiting device used with an 864 series in-series gas booster as part of a solar water heater installation must be of a type suitable for use with a solar water heater and have the capability of receiving a hot water supply temperature of up to 99°C.
  • Page 49 INSTALLATION – WATER HEATER Where a temperature limiting device is installed adjacent to the in-series gas booster, the cold water line to the temperature limiting device can be branched off the cold water line either before or after the isolation valve and pressure limiting valve to the solar storage tank, but it MUST BE before the non-return valve prior to an open circuit system.
  • Page 50 INSTALLATION – WATER HEATER CIRCULATED HOT WATER FLOW AND RETURN SYSTEM A Rheem 864 627 model continuous flow water heater can be installed as part of a circulated hot water flow and return system in a building. Notes:  the preset outlet temperature setting of the water heater must be set to at least 60°C.
  • Page 51 INSTALLATION – WATER HEATER Circulated Hot Water Flow and Return Continuous Flow Gas Water Heater from solar storage tank Circulated Hot Water Flow and Return In-series Gas Booster as part of a Solar Water Heater Installation REDUCING HEAT LOSSES The hot water line from the water heater and the pipe work between the solar storage tank, if one is installed, and the in-series gas booster must be insulated in accordance with the requirements of AS/NZS 3500.4.
  • Page 52 INSTALLATION – WATER HEATER WATER TEMPERATURE DIAGRAMS Note: NZ - Kitchen Controller max setting is 55°C 864 Series - Kitchen and Bathroom Controllers 866 Series – Kitchen and Bathroom Controllers Note: NZ - Kitchen Controller max setting is 55°C 864 Series - Kitchen Controller Only...
  • Page 53 INSTALLATION – WATER HEATER DIMENSIONS AND TECHNICAL DATA 864 627 864 627 866 627 Model Natural Universal Propane LP Gas Rated delivery litres / min 16.7 16.0 (@ 40°C rise) Recovery litres / min (@ 25°C rise) Mass Empty (unpackaged) Technical data is subject to change.
  • Page 54 INSTALLATION – WATER HEATER DIMENSIONS – STANDARD CONTROLLERS Kitchen Controller (Standard) Bathroom Controller (Standard)
  • Page 55 INSTALLATION – WATER HEATER DIMENSIONS – DELUXE CONTROLLERS Deluxe Controller – Cover Closed Deluxe Controller – Cover Open...
  • Page 56 INSTALLATION – WATER HEATER TYPICAL INSTALLATION – INDOOR LOCATION...

  • Page 57: Connections - Plumbing

    CONNECTIONS – PLUMBING All plumbing work must be carried out by a qualified person and in compliance with the Standard AS/NZS 3500.4 and all local codes and regulatory authority requirements. In New Zealand the installation must conform to Clauses G11, G12 and H1 of the New Zealand Building Code. All gas work must be carried out by a qualified person and in compliance with the Standard AS 5601 or AS/NZS 5601.1, as applicable under local regulations, and all local codes and regulatory authority requirements.
  • Page 58 Warning: Always isolate the water heater before pressure testing the gas supply system. Disconnect the water heater after the isolation valve to prevent the risk of serious damage to the gas control. The Rheem warranty does not cover damage of any nature resulting from failure to observe this precaution. Refer to rating...

  • Page 59: Flueing

    A sealing gasket is located at one end of the inner flue. Check all flue components to ensure the gasket is in place and properly seated. DO NOT install if any gaskets are missing. Contact Rheem Service or their nearest...
  • Page 60 FLUEING COMPONENTS A complete flue system is comprised from the following components. horizontal flue terminal trim ring (PN 295116) (PN 295125) vertical flue terminal condensate trap (PN 295117) (PN 295139) 90° bend 45° bend (PN 295118) (PN 295119) straight length – 300 mm wall bracket (PN 295126) (PN 295129)
  • Page 61 FLUEING FLUE TERMINAL LOCATION The water heater must be located to ensure that the location of the flue terminal complies with the requirements of AS 5601 or AS/NZS 5601.1, as applicable under local regulations. As a guide the following requirements are extracted from the Gas Installations Standard.
  • Page 62 Failure to install a Condensate Trap and drain line could allow acidic flue gas condensate to enter into the water heater flue-way, causing premature failure of the water heater. Any resultant faults will not be covered by the Rheem warranty. Note: A horizontal run of flue connecting directly to a Horizontal Flue Terminal must have a gradient downward...
  • Page 63 FLUEING Condensate Trap and Condensate Drain Line Where the installation requires a Condensate Trap and condensate drain line: Remove the clamp and rubber cap from the condensate drain spigot on the water heater flue outlet assembly. Locate the Condensate Trap in a suitable position adjacent to the water heater.
  • Page 64 FLUEING HORIZONTAL FLUE RUNS There are a number of basic installation requirements which must be followed for a flue installation incorporating horizontal flue runs. Failure to observe these precautions can lead to the premature failure of the flue system and / or water heater.
  • Page 65 FLUEING Typical Installation Horizontal Terminal with Multiple Vertical and Horizontal Sections Typical Installation Typical Installation Vertical Flue Vertical Terminal with Vertical and Horizontal Sections...
  • Page 66 FLUEING HORIZONTAL FLUE INSTALLATION Horizontal Flueing – Directly Behind Water Heater This method of flue installation is used where the secondary flue is to penetrate and terminate immediately behind the wall on which the water heater is mounted. Do not plumb the water heater prior to this type of flue installation, as the water heater (if mounted) requires to be removed from the wall prior to the final installation of the flue.
  • Page 67 FLUEING Note: Steps 10 to 14 can only be conducted whilst the water heater is off the wall. Connect the 90° Bend (PN 295118) to the water heater flue outlet so it is orientated behind the water heater. Fit the end of the bend down over the water heater flue ...
  • Page 68 FLUEING Horizontal Flueing – Extended Flue Run Notes:  Ensure each flue component is fully engaged and the rubber seal on the inner duct is well seated at each joint.  Each flue component is supplied with screws to connect to the adjacent flue component. The screws are located in a bag taped to the outside of the flue component.
  • Page 69 FLUEING Carefully remove the template inserted as the middle pages of this installation instructions booklet.  Cut along the middle of the bold circle marked “Cut Line”. Align the top of the circular template with the mark on the wall. It may be convenient to tape the template to the wall.
  • Page 70 FLUEING Once the flue is assembled and penetrating the wall, install the Horizontal Terminal and secure the termination to the flue using the sheet metal screws provided. Note: If the flue terminal position is more than 1800 mm above a safe working surface, then suitable equipment will be required to enable safe access to fit the flue terminal.
  • Page 71 FLUEING VERTICAL FLUE INSTALLATION Suitable flashing (not supplied) is required to waterproof the roof penetration. Notes:  Ensure each flue component is fully engaged and the rubber seal on the inner duct is well seated at each joint.  Each flue component is supplied with screws to connect to the adjacent flue component. The screws are located in a bag taped to the outside of the flue component.
  • Page 72 FLUEING Fix a Wall Bracket after each transition to a vertical run. This is to prevent vertical loading on the bends and offsets. Support vertical sections of flue at a distance no greater than 2 m using a Wall Bracket (PN 295128). Note: The Wall Bracket can be used to support vertical sections of flue from a ceiling by rotating the legs through 90°.
  • Page 73 FLUEING MULTIPLE WATER HEATER FLUE INSTALLATION Where multiple water heaters are installed, each water heater must be individually flued to the outside. A common flue system MUST NOT be used. For a multiple unit installation, the water heater is certified for installation with zero clearance between adjacent water heaters.
  • Page 74 FLUEING MULTIPLE WATER HEATER CONDENSATE TRAP AND CONDENSATE DRAIN LINE INSTALLATION Depending upon the type of installation, it may be necessary to install a Condensate Trap and condensate “Draining the Condensate” drain line to each water heater. Refer to on page 62. The drain line from each Condensate Trap may be: ...
  • Page 75 FLUEING Warning: Failure to fill with water may cause flue gasses to escape through the condensate trap. The condensate trap should be regularly checked to ensure it is filled with water, replenishing when required. Notes AS/NZS 3500.4 section 5.12 is used as a guide in preparing the following drainage recommendations. ...

  • Page 76: Connections - Electrical

    Wiring Rules AS/NZS 3000 and all local codes and regulatory authority requirements. Warning: Temperature controllers must not be fitted to this water heater (864 series) if it is installed as an in-series gas booster with a solar water heater system because water at a temperature much higher than the controller setting can be delivered.

  • Page 77: Ez Link System Dual Installation

    The second water heater will only operate when the hot water demand exceeds the capacity of the first water heater to supply. The EZ Link system is suitable for installation with Rheem 864 and 866 series 627 model continuous flow gas water heaters. The EZ Link Kit PN 299291 is required for the installation.
  • Page 78 A temperature controller should not be installed if two 864 series 627 model water heaters are installed with an EZ Link system and they are part of a circulated hot water flow and return system in a building. Refer to “Circulated Hot Water Flow And Return System”...
  • Page 79 EZ LINK SYSTEM DUAL INSTALLATION EZ LINK CABLE CONNECTION ‘Control Board with EZ Link Connection’ The references in steps 5 to 8 are to the diagram on page 80. To connect the EZ Link cable to the water heaters: “Installation – Controllers” Refer to on page 82 for information on the installation of temperature controllers.
  • Page 80 EZ LINK SYSTEM DUAL INSTALLATION °C Check the main gas isolation valve and the isolation valves at the gas inlet to each water heater are fully open. Switch on the electrical supply at the power outlet to the water heater. Turn on the controller by pressing the on / off ( ) button, if one is installed.
  • Page 81 EZ LINK SYSTEM DUAL INSTALLATION Typical Two Unit Manifold with EZ Link Connection...

  • Page 82: Installation - Controllers

    There are three types of standard controller. They are the Kitchen controller (Rheem AU - Part 299850, NZ - Part A299850), Bathroom 1 controller (Rheem AU - Part 299851, NZ - Part A299851) and the Bathroom 2 controller (Rheem AU - Part 299852, NZ - Part A299852). These part numbers include the controller cable supplied with the controller.
  • Page 83 The standard Kitchen controller (Rheem AU - Part 299853, NZ - Part A299850) or Kitchen Deluxe controller (Rheem AU - Part 299861, NZ - Part A299861) is to be installed in the kitchen or laundry only. It has a minimum temperature setting of 37°C and a maximum temperature setting of:...
  • Page 84 INSTALLATION – CONTROLLERS Wiring installation: Penetrate the wall with a 30-35 mm hole at the controller location. Install the Kitchen controller cable between the location of the controller and the water heater. Remove the base plate from the controller. Draw the cable through the central hole in the base plate. Fix the base plate to the wall using suitable screws and wall anchors.
  • Page 85 INSTALLATION – CONTROLLERS If it is necessary to have an exposed wiring installation, follow this procedure omitting Steps 1 and 4, and make an opening in the thin section in the underside of the controller to accommodate the cable (as shown in the diagram), prior to Step 6.
  • Page 86 If only one Bathroom controller is to be installed, the standard Bathroom 1 Controller (Rheem AU - Part 299854, NZ - Part A299851) or the Bathroom 1 Deluxe controller (Rheem AU - Part 299862, NZ - Part A299862) must be used. If two Bathroom controllers are to be installed, one must be a standard Bathroom 1 controller and the...
  • Page 87 INSTALLATION – CONTROLLERS Wiring installation: Penetrate the wall with a 30-35 mm hole at the controller location. Install the supplied cable between the location of the controller and the water heater. Remove the base plate from the controller. Peel off one side of the adhesive paper from the foam packing and adhere to the back face of the base plate.
  • Page 88 INSTALLATION – CONTROLLERS CONNECTING THE CONTROLLER(S) TO THE WATER HEATER To connect the controller(s) to the water heater: Ensure the electrical supply to the water heater is switched off. Unscrew and gently remove the electrical cover from the underside of the water heater. Draw the cable(s) through the electrical cover.

  • Page 89: Commissioning

    Refer to on page 93.  Check and if required adjust the outlet compensation temperature adjustment on an AU – 866 series or NZ – 864 series water heater. “Outlet Compensation Temperature Adjustment” Refer to on page 95. The automatic water governor incorporated in the water heater is not adjustable.
  • Page 90 COMMISSIONING Gas Inlet Test Point Pressure To check the gas inlet pressure: Close any hot taps and ensure the burners are not operating. Close the gas isolation valve at the gas inlet to the water heater. Locate the gas inlet test point on the gas connection to the water heater.
  • Page 91 Warning: The removal of the front panel will expose 240 volt wiring. Take care not to touch wiring terminals. Note: If an 864 series model is installed as a gas booster for a solar water heater, then during this procedure the temperature of the water entering the gas booster must be below 58°C.
  • Page 92 COMMISSIONING Notes:  If the burners extinguish and error code 11 or 12 starts to flash on the LED display:  release the MIN and adjuster buttons  close the hot tap  “Clearing Error Code” clear the error code (refer to on page 92) ...
  • Page 93 PRESET OUTLET TEMPERATURE SETTING The factory preset outlet temperature setting of the water heater is:  60°C – AU, 55°C – NZ 864 series  866 series 50°C If a temperature controller is connected to the water heater, this will override the preset outlet temperature...
  • Page 94 The MAX and MIN buttons are located underneath the DIP 1 and DIP 2 set of DIP switches. 864 series The increments are 38°C, 40°C, 42°C, 43°C, 45°C, 50°C, 55°C, 60°C*, 70°C, 75°C. * 60°C – AU models only.
  • Page 95   NZ – 55°C if a temperature controller is not connected to an 864 series water heater.  If there is a tap, such as a kitchen or laundry tap, in the hot water pipe work between the water heater and the first tap used for personal hygiene purposes, then it is possible for: ...
  • Page 96 AU – below 50°C for an 866 series model, the maximum outlet temperature of the water heater can be adjusted upwards, or  NZ – above 55 °C for an 864 series model, the maximum outlet temperature of the water heater can be adjusted downwards. Turn off the hot tap.
  • Page 97 COMMISSIONING Switch dip switches 1 and 2 to the on (up) position on the DIP 2 set of DIP switches on the I.C. Board. The temperature setting of ‘48’ will show on the LED display, if this has not previously been adjusted. AU –...
  • Page 98 COMMISSIONING NZ – 864 series: if the water temperature is still below 50°C and requires to be increased, repeat steps 10, 12and 13,  followed by steps 2 to 5 until an acceptable water temperature not exceeding 55°C is measured at the same hot tap.

  • Page 99: Draining The Water Heater

    DRAINING THE WATER HEATER To drain the water heater:  “Turn Off The Water Heater” Turn off the water heater (refer to on page 98).  Open a hot tap (preferably the shower outlet).  Unscrew the two drain plugs, one each at the cold water inlet and hot water outlet, on the underside of the water heater.
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  • Page 102: Warranty

    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 103 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 104 The Rheem warranty (set out above) is in addition to any rights and remedies that you may have under the Australian Consumer Law.

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