Rheem 627 series Owner's Manual And Installation Instructions
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Rheem 627 series Owner's Manual And Installation Instructions

Rheem 627 series Owner's Manual And Installation Instructions

Continuous flow gas indoor water heater
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Installation Instructions

Gas Indoor Water Heater
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
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 627 series

  • Page 1: Installation Instructions

    Carefully follow the Installation Instructions. 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 This water heater may be protected by one or more patents or registered designs in the name of Rheem Australia Pty Ltd or Paloma Co., Ltd. Rheem Australia Pty Ltd is the supplier 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

    This model has an extended manufacturer‟s warranty (refer to the Rheem warranty on page 99). The water heater has a maximum preset outlet temperature setting of: 864 series 75°C...
  • Page 5 The setting can only be adjusted by the installer, Rheem Service or their nearest Accredited Service Agent. Note: AS 3498 requires that a water heater provides the means to inhibit the growth of Legionella bacteria in potable water.
  • Page 6 ABOUT YOUR WATER HEATER CIRCULATED HOT WATER FLOW AND RETURN SYSTEM A Rheem 862 627 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 7 Note: The five year 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 five year service includes the following actions: Check and if necessary adjust the gas pressure.
  • Page 8 ABOUT YOUR WATER HEATER TO TURN OFF THE WATER HEATER If it is necessary to turn off the water heater: Turn off the controllers(s) (if fitted) by pressing the on / off button. The light in the on / off button will go out and the priority light (standard controller) or the ACTIVE light (Deluxe controller), if it is on, will go out.
  • Page 9 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 99). If it is necessary to switch the power off to the water heater and there is a risk of freezing, then it is “Draining the Water Heater”...
  • Page 10 ABOUT YOUR WATER HEATER HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY? Installation requirements are shown on pages 56. The water heater must be installed: by a qualified person, and in accordance with the installation instructions, and in compliance with Standards AS/NZS 3500.4, AS 5601 or AS/NZS 5601.1, as applicable under local regulations, and all local codes and regulatory authority requirements.

  • Page 11: Temperature Control

    TEMPERATURE CONTROL CONTROLLERS The Rheem 864 and 866 series can be installed with Rheem controllers to enable the user to control the temperature of the delivered water from the outlet of the water heater. There are two families of Rheem controllers suitable for installation with this water heater.

  • Page 12: Temperature Control - Standard

    TEMPERATURE CONTROL – STANDARD 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 are off, the water heater will only deliver cold water. on / off button – This button must be pressed once to turn on the controller.
  • Page 13 TEMPERATURE CONTROL – STANDARD STANDARD CONTROLLER priority light in use light  up display panel button water volume symbol  down button water volume operating light on / off operating light water volume button on / off controller type button K = Kitchen B1 = Bathroom1 B2 = Bathroom2...
  • Page 14 TEMPERATURE CONTROL – STANDARD TEMPERATURE SETTINGS – STANDARD CONTROLLER The temperature settings of each type of controller are: Bathroom1 & 2 37°C to 48°C (in 1°C increments), 50°C Kitchen 37°C to 48°C (in 1°C increments), 50°C*, 55°C, 60°C * limited to 50°C on an 866 series model. Temperature settings warm average hot shower...
  • Page 15 TEMPERATURE CONTROL – STANDARD TEMPERATURE ADJUSTMENT – STANDARD CONTROLLER A controller must be on and have priority to be able to adjust the temperature setting. The temperature adjustment is made by pressing the up () button or down () button. The maximum temperature setting for the controllers are: Kitchen Bathroom...
  • Page 16 TEMPERATURE CONTROL – STANDARD KITCHEN CONTROLLER – STANDARD The Kitchen controller allows the user to select the temperature setting for the hot water to be used in the kitchen and laundry. It has a minimum temperature setting of 37°C and a maximum temperature setting of: 864 series 60°C 866 series...
  • 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 TEMPERATURE CONTROL – STANDARD BATHROOM CONTROLLERS – STANDARD The Bathroom controller(s) allows the user to select the temperature setting for the hot water to be used in the bathroom. They have a minimum temperature setting of 37°C and a maximum temperature setting of: 864 series 50°C 866 series...
  • 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. Refer to the notes on the Bathroom controllers on page 18.
  • Page 20 TEMPERATURE CONTROL – STANDARD WATER VOLUME FUNCTION – STANDARD CONTROLLER The water volume function is designed to warn, by a 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 particularly useful if a bath is being filled, or measuring the water consumed by the use of a shower.
  • Page 21 TEMPERATURE CONTROL – STANDARD Turn off the alarm i n us e pri ori ty Press the water volume button to turn off the alarm.  The water volume operating light goes out and 0 x10l 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 DELUXE CONTROLLER FUNCTIONS If one or more Deluxe controllers are installed, at least one must be on or the bath fill function activated for 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 BATH FILL VOLUME TEMPERATURE  up button  up button BATH FILL BATH FILL VOLUME TEMPERATURE BATH FILL BATH FILL Rheem VOLUME TEMPERATURE  down button  down button Bath Fill Bath Fill BATH FILL BATH FILL Bath Bath completed...
  • 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 [MED], voice prompt [MED] This order then repeats. Rheem Note: If the ON / OFF button is not pressed within four (4) seconds of the up () button being pressed, “CL” will start flashing on the temperature display panel. If this occurs, release the up () button and recommence the procedure.
  • Page 26 TEMPERATURE CONTROL – DELUXE TEMPERATURE SETTINGS – DELUXE CONTROLLERS The temperature settings of each type of Deluxe controller are: Bathroom1 & 2 Deluxe 37°C to 48°C* (in 1°C increments), 50°C Kitchen Deluxe 37°C to 48°C* (in 1°C increments), 50°C**, 55°C, 60°C * limited to 48°C when set to Bath Fill mode on 864 and 866 series model.
  • Page 27 TEMPERATURE CONTROL – DELUXE TEMPERATURE ADJUSTMENT – DELUXE CONTROLLERS A controller must be on with the ACTIVE indicator displayed to be able to adjust the temperature setting. The temperature adjustment is made by pressing the up () button or down () button. The minimum temperature setting for each type of controller is 37°C.
  • Page 28 Deluxe controllers, including the bath fill function if it is on, the displays go blank and the lights go out. If hot water is flowing from a hot tap, it will go cold. ACTIVE °C 1 2 0 BATH (l) BATH FILL ON/OFF Rheem Kitchen Deluxe Controller...
  • Page 29 Kitchen Deluxe controller  on page 28. BATH FILL ON/OFF Turn on the Kitchen Deluxe controller Rheem Press the ON / OFF button.  ACTIVE The light in the ON / OFF button and the ACTIVE °C 8 8 8 8 light will both glow.
  • Page 30 Bath Fill Button Fill Button open (Red light flashes) (Red light on) ed light off) Set Bath Fill Water Volume 4. Open hot tap 6. Close hot tap and Temperature Rheem Hot Water ACTIVE Adjust Open hot ON/OFF Light on Temperature Press...
  • Page 31 Kitchen Deluxe controller. Refer to the notes on the Bathroom Deluxe BATH FILL ON/OFF controllers on page 30. Rheem Turn on the Bathroom Deluxe controller  Press the ON / OFF button. ACTIVE °C 8 8 8 8 The light in the ON / OFF button and the ACTIVE light will both glow.
  • Page 32 Refer to the notes on the Bathroom Deluxe controllers on page 30. BATH FILL ON/OFF Pull down the front panel on the Deluxe controller. Rheem BATH FILL BATH FILL The BATH FILL VOLUME and BATH FILL TEMPERATURE VOLUME TEMPERATURE up () and down () buttons will be exposed.
  • Page 33 1 2 0 BATH (l) TEMPERATURE CONTROL – DELUXE BATH FILL ON/OFF Close the front panel on the Deluxe controller. Rheem Turn on the Bath Fill mode Press the BATH FILL button.  On all Deluxe controllers: ACTIVE °C 1 2 0 ...
  • Page 34 Bath Fill mode. BATH FILL BATH FILL VOLUME TEMPERATURE Rheem Pull down the front panel on the Deluxe controller. BATH FILL VOLUME BATH FILL Bath Fill...
  • Page 35 BATH FILL BATH FILL While the bath fill water volume is displayed, each volume has been VOLUME TEMPERATURE Rheem increased, subsequent press of the BATH FILL VOLUME bath may overflow”  (up button) BATH FILL VOLUME  (down button) will change the water volume “bath fill water...
  • Page 36 TEMPERATURE CONTROL – DELUXE Open the hot tap. The operating light will glow on all Deluxe controllers. ACTIVE °C 1 2 0 Measurement of the water flow at the water heater will BATH (l) commence when the hot tap is opened. Notes: BATH FILL ON/OFF...
  • Page 37 TEMPERATURE CONTROL – DELUXE Turning Off Bath Fill Mode During Its Operation The bath fill operation can be interrupted by pressing the BATH FILL button before completion of the bath fill operation. If it is necessary to turn off the Bath Fill mode before the operation is complete, during Step Press the BATH FILL button At this first press of the BATH FILL button...
  • Page 38 TEMPERATURE CONTROL – DELUXE Notes on the Bath Fill mode: The Bath Fill mode can be set, turned on and turned off at any of the Deluxe controllers. The Deluxe controllers do not require to have priority (ACTIVE 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 mode 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 mode whilst a Deluxe Controller is ACTIVE It is recommended the Bath Fill mode be set and operated with the Deluxe controllers turned off (refer to Step 1 on page 34). However, if a Deluxe controller is ACTIVE during the setting and operation of the Bath Fill mode, 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

    SAVE A SERVICE CALL Check the items below before making a service call. You will be charged for attending to any condition or “Terms of the Rheem Warranty” fault, which is not related to manufacture or failure of a part (refer to page 99).
  • 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 to arrange for inspection.

  • Page 45: Installation - Water Heater

    INSTALLATION – WATER HEATER THIS WATER HEATER IS FOR INDOOR INSTALLATION ONLY. THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING. Check the water heater is suitable for the gas type available. (refer to the rating label on the water heater) INSTALLATION STANDARDS The water heater must be installed: by a qualified person, and...
  • 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 90°C, such as the Rheem Premier Hiline thermosiphon closed circuit system. 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 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 direct 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 LEGEND LEGEND from solar storage tank Circulated Hot Water Flow and Return In-series Gas Booster as part of a Solar Water Heater Installation LEGEND 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 864 Series - Kitchen and Bathroom Controllers 866 Series – Kitchen and Bathroom Controllers 864 Series - Kitchen Controller Only 866 Series - Kitchen Controller Only 864 Series - Bathroom Controllers Only 866 Series - Bathroom Controllers Only 864 Series - No Controllers 866 Series - No Controllers Notes:...
  • Page 53 OUTLET COLD WATER INLET ELECTRONIC CONTINUOUS FLOW 864 627 Model GAS WATER HEATERS 866 627 INTERNAL 627 MODELS - 862, 864, 866 SERIES Rated delivery litres / min 16.7 (@ 40°C rise) Recovery litres / min (@ 25°C rise) Mass...
  • 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 Bath Fill Bath Fill completed Bath Bath (automatic) Water Fill BATH FILL BATH FILL Volume Temp Bath Fill Button Press Bath Press Bath (Red light flashes) Bath Fill Fill Button Set Bath Fill Water Volume Fill Button...
  • Page 56 INSTALLATION – WATER HEATER TYPICAL INSTALLATION – INDOOR LOCATION...

  • Page 57: Connections - Plumbing

    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. CONNECTION SIZES 864 627 Model 866 627 Hot water connection R¾/20...
  • 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...

  • 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 Accredited Service Agent if the gasket is missing.
  • 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. The distances are measured along the wall from the flue penetration.
  • Page 62 CONDENSATE SPIGOT LOCATION back toward the water heater. CFWH 627 INDOOR MODELS 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.
  • 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 “Connections – Electrical” “Commissioning” Refer to on page 76 electrical connection details and on page 89 for the commissioning details of the water heater. CONDENSATE SPIGOT LOCATION CFWH 627 INDOOR MODELS SK7166-5 REV AD 1/12...
  • Page 71 CONDENSATE SPIGOT LOCATION  CFWH 627 INDOOR MODELS Ensure each flue component is fully engaged and the rubber seal on the inner duct is well seated at each joint. Horizontal flue runs between bends must have a minimum upward gradient towards the flue terminal of 20 mm per metre.
  • 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: drained separately to a discharge point, or manifolded together with a single drain line running to a discharge point.
  • 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. As the condensate is mildly acidic, copper tube and fittings must not be used as they will corrode.

  • Page 76: Connections - Electrical

    The power consumption of the water heater is: Power Comments Component consumption 627 – Burner on, anti frost device inactive Gas water heater 80 Watts 627 – Burner on, anti frost device active 187 Watts The water heater will only operate on a sine wave at 50 Hz. Devices generating a square wave cannot be...

  • Page 77: Ez-Link System Dual Installation

    Rheem 864 and 866 series 627 model water heaters do not require a temperature controller to be installed as part of an Ez-link system installation. A temperature controller(s) may be installed with the EZ-Link system on an 864 or 866 627 model dual installation. The controller(s) can be either a standard or Deluxe controller(s).
  • Page 78 A temperature controller should not be installed if two 864 627 model water heaters have been Ez-Linked “Circulated together and they are part of a circulated hot water flow and return system in a building. Refer to Hot Water Flow And Return System”...
  • Page 79 DIP SWITCHES - EZ LINK INSTALLATION  Plug the cable into the four pin connector CONTINUOUS FLOW WATER HEATER located immediately below the MIN button, 86,87 SERIES, 627 MODELS toward the upper right hand corner of the Control Board (refer to the Control Board SK6668-46 REV_AD 2/12 diagram).
  • Page 80 PLUG IN EZ-LINK (WITHOUT CONTROLLER) CABLE INTO CONNECTOR SECOND WATER HEATER ONLY (WITH CONTROLLER) BOTH WATER HEATERS ALL DIP SWITCHES IN THE OFF (DOWN) POSITION Control Board with Ez-Link Connection EZ-LINK CABLE CONNECTION CONTINUOUS FLOW WATER HEATER 86,87 SERIES, 627 MODELS...
  • Page 81 EZ-LINK SYSTEM DUAL INSTALLATION MANIFOLD INSTALLATION - EZ LINK CONNECTION TWO CONTINUOUS FLOW WATER HEATERS - 862,864,866 SERIES 627 MODELS no minimum distance requirement Temperature Controller (installed indoors) (optional-627 models) in use priority °C check hot water water temperature volume...

  • Page 82: Installation - Controllers

    INSTALLATION – CONTROLLERS CONTROLLERS The Rheem 864 and 866 series can be installed with Rheem controllers to enable the user to control the temperature of the delivered water from the outlet of the water heater. There are two families of Rheem controllers suitable for installation with this water heater. These are the standard controllers and the Deluxe controllers.
  • Page 83 Outdoors. The controllers are not weatherproof. KITCHEN CONTROLLER The standard Kitchen controller (Rheem PN 299853) or Kitchen Deluxe controller (Rheem PN 299861) is to be installed in the kitchen or laundry only. It has a minimum temperature setting of 37°C and a maximum...
  • 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 Bathroom1 controller and the other must be a standard Bathroom2 controller (Rheem PN 299855) or one must be a Bathroom1 Deluxe controller and the other must be a Bathroom2 Deluxe controller (Rheem PN 299863).
  • 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 Controller Cable Connection Rheem Continuous Flow 86, 87 Series 022, 024, 027 Models Refit the electrical cover to the water heater and replace the screws. Switch on the electrical supply to the water heater.

  • Page 89: Commissioning

    COMMISSIONING All water heaters are tested and adjusted before dispatch from the factory, however further adjustments may become necessary because of local conditions. TO TURN ON THE WATER HEATER Open all of the hot taps in the house (don‟t forget the shower). Open the cold water isolation valve fully at the inlet to the water heater.
  • 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 COMMISSIONING BURNER GAS PRESSURE It is necessary to check the burner gas pressure at both the minimum and maximum operational settings. To check and if necessary adjust the operational gas pressures, the electrical supply to the water heater must be switched on, the burners ignited and hot water must be flowing from a hot tap. Warning: The removal of the front panel will expose 240 volt wiring.
  • 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 COMMISSIONING PRESET OUTLET TEMPERATURE SETTING The factory preset outlet temperature setting of the water heater is: 864 series 60°C 866 series 50°C If a temperature controller is connected to the water heater, this will override the preset outlet temperature setting and the maximum temperature setting will be: Maximum Outlet Temperature 864 series 866 series...
  • Page 94 COMMISSIONING TO CHECK OR ADJUST THE PRESET OUTLET TEMPERATURE SETTING The temperature settings will be displayed on the LED display. The preset outlet temperature settings are: 864 series 38°C, 40°C, 42°C, 43°C, 45°C, 50°C, 55°C, 60°C, 70°C, 75°C 866 series 38°C, 40°C, 42°C, 43°C, 45°C, 50°C It is necessary to have the electrical supply to the water heater switched on during stages of checking or adjusting the preset outlet temperature setting procedure.
  • Page 95 Outlet Temperature Setting” on page 94. Controller Cable Connection Rheem Continuous Flow 86, 87 Series 022, 024, 027 Models Outlet Temperature Adjustment To adjust the outlet temperature: Switch on the electrical supply at the power outlet to the water heater.
  • Page 96 COMMISSIONING Turn off the hot tap. Switch off the electrical supply at the power outlet to the water heater. Remove the screws holding the front panel to the jacket. Gently disengage the front panel and pull forward to remove from the water heater. Switch on the electrical supply at the power outlet to the water heater.

  • Page 97: Draining The Water Heater

    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 by the “Terms of the Rheem Warranty” Rheem warranty (refer to on page 99).
  • Page 98 This page is intentionally blank.

  • Page 99: Warranty

    2.1 The decision of whether to repair or replace a faulty component is at Rheem’s sole discretion. 2.2 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.
  • Page 100 3. WHAT IS COVERED BY THE RHEEM WARRANTY FOR THE WATER HEATERS DETAILED IN THIS DOCUMENT 3.1 Rheem will repair or replace a faulty component of your water heater if it fails to operate in accordance with its specifications as...

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