Rheem 874627 Owner's Manual And Installation Instructions
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Rheem 874627 Owner's Manual And Installation Instructions

Rheem 874627 Owner's Manual And Installation Instructions

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Owner's Guide
and
Installation Instructions
Continuous Flow
Gas Water Heater
874, 876 series
627 models
This water heater must be installed and serviced by a qualified person.
Please leave this guide with the householder.

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  • Page 1 Owner’s Guide Installation Instructions Continuous Flow Gas Water Heater 874, 876 series 627 models This water heater must be installed and serviced by a qualified person. Please leave this guide with the householder.
  • Page 2 Rheem Australia Pty Ltd and Rheem New Zealand Limited are the suppliers of the Rheem range of continuous flow gas water heaters, manufactured in Japan by Paloma Co., Ltd., a world leader in water heater technology and manufacture.

  • Page 3: Table Of Contents

    Rheem warranty. We recommend you read pages 7 to 48, and the terms of the Rheem warranty on pages 4 to 6. The other pages are intended for the installer but may be of interest.

  • Page 4: 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 5: 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 6: Entitlement To Make A Claim Under This Warranty

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

  • Page 7: Safety, Warnings, Installation Notes

    The Rheem warranty may not cover faults if safety devices or the relief valve are tampered with or if the installation is not in accordance with these instructions.
  • Page 8 Alternatively the water heater can be installed recessed into a wall, using a proprietary made recess box from Rheem for such an installation. Refer to the installation instructions which accompany the recess box kit for “Recess Installation” the dimensions of the space required and information on its installation. Refer also to...

  • Page 9: About Your Water Heater

    Smartphone. An appropriately licensed tradesperson must firstly install the Rheem EZiSET control module into your water heater and a PLT adaptor (supplied in the EZiSET kit) must also be connected to your Wi-Fi modem before you download the free app onto your Smartphone. No additional wiring is required.

  • Page 10: How Hot Should The Water Be

    876 series 50°C Note: The preset outlet temperature setting of this water heater cannot be adjusted by the householder. The setting can only be adjusted by the installer, Rheem Service or their nearest Accredited Service Agent / Centre. Australia New Zealand...

  • Page 11: Gas Boosting For A Solar 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 “Terms of the Rheem Warranty” by the Rheem warranty (refer to on page 4). ...

  • Page 12: General Maintenance

    Service or their nearest Accredited Service Agent / Centre. 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.

  • Page 13: To Turn Off The Water Heater

    °C ABOUT YOUR WATER HEATER TO TURN OFF THE WATER HEATER If it is necessary to turn off the water heater:  Turn off the controller(s) (if fitted) by pressing the on / off ( ) button. The on / off operating light will go out and the priority light, if it is on, will go out. ...
  • Page 14 ABOUT YOUR WATER HEATER CIRCULATED HOT WATER FLOW AND RETURN SYSTEM A Rheem 874627 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 54 for further information and notes on this type of installation.

  • Page 15: Temperature Control

    TEMPERATURE CONTROL CONTROLLERS The Rheem 874 and 876 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 16: 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 17: Standard Controller

    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 18 TEMPERATURE CONTROL – STANDARD TEMPERATURE SETTINGS – STANDARD CONTROLLER The temperature settings of each type of controller are:  Bathroom 1 & 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 876 series model.
  • Page 19 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. ...
  • Page 20 Press and hold the on / off ( ) button on the Kitchen controller for three seconds.  This turns off all the controllers and the displays go blank. If hot water is flowing from a hot tap, it will go cold. Rheem °C Kitchen Controller...
  • Page 21 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. Refer to the notes on the Kitchen controller on page 20.
  • Page 22 The Kitchen controller will gain priority if it is on and the temperature setting can be up to: 60°C – AU 55°C – NZ 874 series  Rheem 876 series 50°C  If a hot tap is open in another bathroom, the water will be delivered at: °C...
  • Page 23 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 22.

  • Page 24: Water Volume Function

    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 25 °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 26: 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 27: Deluxe Controller

    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 28 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 29 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 30 TEMPERATURE CONTROL – DELUXE TEMPERATURE SETTINGS – DELUXE CONTROLLERS The temperature settings of each type of Deluxe controller are:  Bathroom 1 & 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 the Bath Fill function is set with 874 and 876 series models.
  • Page 31 TEMPERATURE CONTROL – DELUXE TEMPERATURE ADJUSTMENT – DELUXE CONTROLLERS  A controller must be on with the PRIORITY indicator displayed to be able to adjust the temperature setting.  The temperature adjustment is made by pressing the up () button or down () button. ...
  • Page 32 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. °C BATH (l) Rheem Kitchen Deluxe Controller...
  • Page 33 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 34 Set Bath Fill Press Bath Press Bath open Water Volume Fill Button Bath Fill Button Fill Button (Red light on) (Red light flashes) (Red light off) and Temperature Hot Water Rheem Adjust PRIORITY Open Light on Temperature hot tap Press...
  • Page 35 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 36: Bath Fill Function

    °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 37 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 38 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 39 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 40 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: If a second hot tap is opened when the Bath Fill ...
  • Page 41 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 42 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 43 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 44 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 38). 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 45: Change Of Water Supply

    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 46: Water Is Too Hot Or Not Hot Enough

    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 4).

  • Page 47: Water Flow Fluctuates

     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 48: Pressure Relief Valve Discharging

    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 49: Installation - Water Heater

    INSTALLATION – WATER HEATER THIS WATER HEATER IS FOR OUTDOOR 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: ...
  • Page 50 INSTALLATION – WATER HEATER This water heater must be installed vertically upright with the water, gas and power connections on the underside, pointing toward the ground. The back of the water heater can be either against a wall or supported by a frame. Note: The water heater must be well secured to the wall or frame using two fasteners each at the top and bottom of the unit (refer to page 57 for...

  • Page 51: Pipe Cover

    PIPE COVER The pipe work to the water heater can be housed within a pipe cover. A pipe cover kit (Rheem AU – Part 299425, NZ – Part 320116) is available for such an installation. Refer to the installation instructions which accompany the pipe cover kit.

  • Page 52: Hot Water Delivery

    INSTALLATION – WATER HEATER HOT WATER DELIVERY This water heater can deliver water at temperatures which can cause scalding. It is necessary and we recommend that a temperature limiting device be fitted between an 874 series water heater and the hot water outlets in any ablution and public areas such as a bathroom, ensuite or public amenities, to reduce the risk of scalding.
  • Page 53 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 54: Circulated Hot Water Flow And Return System

    INSTALLATION – WATER HEATER CIRCULATED HOT WATER FLOW AND RETURN SYSTEM A Rheem 874627 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 – AU or 65°C – NZ.

  • Page 55: Reducing Heat Losses

    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 56: Water Temperature Diagrams

    INSTALLATION – WATER HEATER WATER TEMPERATURE DIAGRAMS Note: NZ - Kitchen Controller max setting is 55°C 874 Series - Kitchen and Bathroom Controllers 876 Series – Kitchen and Bathroom Controllers Note: NZ - Kitchen Controller max setting is 55°C 874 Series - Kitchen Controller Only 876 Series - Kitchen Controller Only 874 Series - Bathroom Controllers Only 876 Series - Bathroom Controllers Only...

  • Page 57: Dimensions And Technical Data

    INSTALLATION – WATER HEATER DIMENSIONS AND TECHNICAL DATA 874627 874627 876627 Model Natural, Universal Propane LP Gas Water heating capacity 16.7 16.0 litres / min @ 40°C rise Nominal capacity litres / min @ 25°C rise Mass Empty (unpackaged) Technical data is subject to change.
  • Page 58 INSTALLATION – WATER HEATER DIMENSIONS – STANDARD CONTROLLERS Kitchen Controller (Standard) Bathroom Controller (Standard)
  • Page 59 INSTALLATION – WATER HEATER DIMENSIONS – DELUXE CONTROLLERS Deluxe Controller – Cover Closed Deluxe Controller – Cover Open...

  • Page 60: Typical Installation - Outdoor Location

    INSTALLATION – WATER HEATER TYPICAL INSTALLATION – OUTDOOR LOCATION...

  • Page 61: Connection Sizes

    AS/NZS 5601.1, as applicable under local regulations, 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. CONNECTION SIZES 874627 Model 876627 Hot water connection...

  • Page 62: Pipe Sizes

    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 63: Connections - Electrical

    CONNECTIONS – ELECTRICAL All electrical work and permanent wiring must be carried out by a qualified person and in accordance with the Wiring Rules AS/NZS 3000 and all local codes and regulatory authority requirements. Warning: Temperature controllers must not be fitted to this water heater (874 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 64: Ez Link System Dual Installation

    Only two continuous flow gas water heaters can be installed with an EZ Link system.  The Rheem EZiSET system cannot be used on the 874 series – NZ or an 876 series water heaters if two of these water heaters are installed with an EZ Link system.

  • Page 65: Temperature Controller

    EZ LINK SYSTEM DUAL INSTALLATION DUAL INSTALLATION The two water heaters can be installed side by side with minimal clearance between them. Rheem 874 and 876 series 627 models are certified for installation with an exemption from the 300 mm minimum clearance requirements between flue terminals, as stated in AS 5601, clause 5.13.6.5 and AS/NZS 5601.1, clause 6.9.3.
  • Page 66 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 67. To connect the EZ Link cable to the water heaters: “Installation – Controllers” Refer to on page 69 for information on the installation of temperature controllers.
  • Page 67 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 68 EZ LINK SYSTEM DUAL INSTALLATION Typical Two Unit Manifold with EZ Link Connection...

  • Page 69: 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 70: Kitchen Controller

    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 71 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 72 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 73: Bathroom 1 And Bathroom 2 Controllers

    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 74 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 75: Connecting The Controller(S) To The Water Heater

    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 76: 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). ...
  • Page 77 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 78: Burner Gas Pressure

    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.
  • Page 79 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 79) ...

  • Page 80: Preset Outlet Temperature Setting

    COMMISSIONING PRESET OUTLET TEMPERATURE SETTING The factory preset outlet temperature setting of the water heater is:  60°C – AU, 55°C – NZ 874 series  876 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 874 series...
  • Page 81 COMMISSIONING Warning: The removal of the front panel will expose 240 V AC wiring. Take care not to touch wiring terminals. The adjustment must be carried out by a qualified person. Warning: This procedure will involve the adjustment of dip switches. Adjustment of a dip switch should only be made with an insulated tool.
  • Page 82 COMMISSIONING OUTLET TEMPERATURE COMPENSATION ADJUSTMENT The outlet temperature compensation adjustment function is only applicable to:  AU – Australian 876 series 627 water heaters The maximum outlet temperature may be adjusted to compensate for temperature losses in the pipe work between the water heater outlet and sanitary fixtures.
  • Page 83 COMMISSIONING Disconnecting a Temperature Controller(s) To disconnect the temperature controller(s): Switch off the electrical supply at the power outlet to the water heater. Unscrew and gently remove the electrical cover from the underside of the water heater. Loosen the terminal screws to release the cables. Withdraw the cables from the terminals and cable holder notches, ensuring they are well clear of the terminals.
  • Page 84 COMMISSIONING 10. 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. 11.
  • Page 85 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 4). ...

  • Page 86: 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 85).  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 87 This page is intentionally blank.
  • Page 88 Revision Date: 2019 August (41-02328-00) 122202G...

This manual is also suitable for:

876 series627 series874 series876627

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