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Rheem 862 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
862 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 a responsible officer.

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Summary of Contents for Rheem 862 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 RESPONSIBLE OFFICER - We recommend you read pages 4 to 14. The other pages are intended for the installer but may be of interest. About Your Water Heater ......................4 Water Supplies ........................... 11 Save A Service Call ........................12 Installation –...

  • Page 4: About Your Water Heater

    GAS BOOSTING FOR A SOLAR WATER HEATER The 862 series 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 5 We recommend and it may be required by regulations that an approved temperature limiting device be fitted into the hot water piping to ablution, bathing and public areas when an 862 series water heater is installed. This will keep the water temperature below the maximum permitted by AS/NZS 3500.4 to these areas. 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,...
  • Page 6 Warning: For continued safety of this water heater it must be installed, operated and maintained in accordance with the Owner‟s Guide and Installation Instructions. 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 Service or their nearest Accredited Service Agent. Note: The annual 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.
  • 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 55). 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 Warning: Temperature controllers must not be fitted to this water heater (862 series) if it is installed as an in-series gas booster with a solar water heater system or if a Water Star water heater is installed because water at a temperature much higher than the controller setting can be delivered.

  • Page 11: 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 12: 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 55).
  • Page 13 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 14 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 15: Installation - Water Heater

    The 862 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 16 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 17 Refer to on page 11 for further information on water chemistry. PRESET OUTLET TEMPERATURE SETTING The factory preset outlet temperature setting of the water heater is: 862 series 60°C for a single water heater 60°C as part of a Multipak system 70°C...
  • Page 18 Gas Booster for a Solar Water Heater The temperature limiting device used with an 862 series in-series gas booster as part of a solar water heater installation must have the additional capability of receiving a hot water supply temperature of up to 99°C if...
  • Page 19 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 20 INSTALLATION – 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 21 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 22 INSTALLATION – WATER HEATER DIMENSIONS AND TECHNICAL DATA MOUNTING HOLES 2x TOP 2x BOTTOM Ø127 Ø127 HOT WATER OUTLET 10 to 40 CONNECTION POWER LEAD CONNECTION COLD WATER INLET POWER LEAD CONNECTION CONNECTION HOT WATER OUTLET COLD WATER INLET ELECTRONIC CONTINUOUS FLOW Model 862 627 GAS WATER HEATERS...
  • Page 23 INSTALLATION – WATER HEATER TYPICAL INSTALLATION – INDOOR LOCATION...

  • Page 24: 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. 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 25 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 26: 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 27 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 28 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 29 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 SK7166-5 REV AD 1/12 downward to the flue terminal.
  • Page 30 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 31 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 32 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 33 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 34 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 35 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 36 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 37 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 38 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 39 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 40 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 41 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 29. 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 42 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 43: 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 (862 series) if it is installed as an in-series gas booster with a solar water heater system or if a Water Star water heater is installed because water at a temperature much higher than the controller setting can be delivered.

  • Page 44: Multiple Installations

    MULTIPLE INSTALLATIONS A multiple installation of 27 litre gas water heaters on a single manifold is possible, using a parallel plumbing arrangement, where large volumes of hot water are required. It is good practice, but not essential, to install ® the water heaters in an Equa-Flow plumbing arrangement.
  • Page 45 MULTIPLE INSTALLATIONS Refer to the diagram on page 45 for installation and plant layout details. PRESSURE REDUCING VALVE COMMISSIONING PROCEDURE The pressure reducing valves must be set and commissioned for each water heater so the water heaters will turn on and off in sequence when the flow rate increases or decreases to a particular rate. This procedure can be conducted with either cold water or solar preheated water, however the temperature of the solar preheated water must be at least 2°C lower than the preset outlet temperature setting of the water heater.
  • Page 46 MULTIPLE INSTALLATIONS To set and commission the pressure reducing valves: Commissioning: Commission each of the water heaters prior to setting the pressure reducing valve on “Commissioning” the cold (or solar preheat) branch to the water heater (refer to on page 47). Turn on services: Turn on the water, gas and electricity to the water heaters.

  • Page 47: Commissioning

    COMMISSIONING All water heaters are tested and adjusted before dispatch from the factory, however further adjustments may become necessary because of local conditions. Note: If this water heater is installed as part of a multiple installation, i.e. in a bank of water heaters, it will be necessary to isolate the other water heaters and commission the water heaters one at a time.
  • Page 48 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 49 Warning: The removal of the front panel will expose 240 volt wiring. Take care not to touch wiring terminals. Note: If an 862 series model is installed as an in-series gas booster for a solar water heater, then the temperature of the water entering the in-series gas booster must be at least 2°C below the water heater preset outlet temperature setting.
  • Page 50 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 50) ...
  • Page 51 COMMISSIONING PRESET OUTLET TEMPERATURE SETTING The factory preset outlet temperature setting of the water heater is: 862 series 60°C for a single water heater 60°C as part of a Multipak system 70°C as part of a Commpak system If a temperature controller is connected to the water heater, this will override the preset outlet temperature...
  • Page 52 DIP 2 set of DIP switches. 862 series The increments are 38, 40, 42, 43, 45, 50, 55, 60, 65, 70, 75, 82. Set the LED display to 82 on an 862 series water heater if it is required MIN. BUTTON ADJUSTER to deliver sanitising temperatures.
  • Page 53 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 55).

  • Page 54: 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 53). 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.

  • Page 55: 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 56 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...

This manual is also suitable for:

627 series872 627

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