Rheem 824 Owner's Manual And Installation Instructions

Continuous flow

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Owner's Guide

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Installation Instructions

Continuous Flow

Gas Water Heater

874, 876 series

824, 826, T26 models

This water heater must be installed and serviced by a qualified person.

Please leave this guide with the householder.

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Summary of Contents for Rheem 824

Page 1 Owner’s Guide Installation Instructions Continuous Flow Gas Water Heater 874, 876 series 824, 826, T26 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, 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 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 Its use in an application other than this may shorten its life. MODEL TYPE ® The Rheem continuous flow gas water heater model you have chosen is for outdoor installation only. The water heater has a maximum preset outlet temperature setting of: ...
Page 5 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 maximum Kitchen controller...
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 / 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 8 ABOUT YOUR WATER HEATER CIRCULATED HOT WATER FLOW AND RETURN SYSTEM A Rheem 874 series continuous flow water heater can be installed as part of a circulated hot water flow and “Circulated Hot Water Flow and Return System” return system in a building. Refer to on page 51 for further information and notes on this type of installation.
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 83). ...
Page 10 ABOUT YOUR WATER HEATER HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY? Installation requirements are shown on pages 57. The water heater must be installed:  by a qualified person, and  in accordance with the installation instructions, and ...
Page 11 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 12 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 TEMPERATURE CONTROL – STANDARD TEMPERATURE SETTINGS – STANDARD CONTROLLER The temperature settings of each type of controller are:  Bathroom1 & 2 37°C to 46°C (in 1°C increments), 48°C, 50°C  Kitchen 37°C to 46°C (in 1°C increments), 48°C, 50°C*, 55°C**, 60°C * limited to 50°C on an 876 series model.
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. ...
Page 16 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 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 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 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 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 °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 TEMPERATURE CONTROL – DELUXE TEMPERATURE SETTINGS – DELUXE CONTROLLERS The temperature settings of each type of Deluxe controller are:  Bathroom1 & 2 Deluxe 37°C to 46°C (in 1°C increments), 48°C*, 50°C  Kitchen Deluxe 37°C to 46°C (in 1°C increments), 48°C*, 50°C**, 55°C,*** 60°C * limited to 48°C when the Bath Fill function is set with 874 and 876 series models.
Page 27 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 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. °C BATH (l) Rheem 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 ...
Page 30 Set Bath Fill Press Bath Press Bath open Fill Button Fill Button Water Volume Bath Fill Button and Temperature (Red light on) (Red light flashes) (Red light off) Hot Water Rheem PRIORITY Adjust Open Light on Temperature hot tap Press...
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 °C 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 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 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 83).
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 an inspection.
Page 45 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 46 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 54 for...
Page 47 AS/NZS 5601.1 A Rheem 874 or 876 series 826NF or T26NF model (AU only) can also be installed on a side wall within a covered area (open on one side only), and meet the installation requirements of AS 5601 and AS/NZS 5601.1,...
Page 48 RECESS INSTALLATION The water heater can be installed recessed into a wall. A recess box (Rheem AU – Part 299247, NZ – Parts 318994 [recess box enclosure kit] and 318995 [recess box door kit]) is available for such an installation. Refer to the installation instructions which accompany the recess box kit for information on its installation.
Page 49 90°C, such as the Rheem Premier Hiline thermosiphon closed circuit system. 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 50 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 51 INSTALLATION – WATER HEATER CIRCULATED HOT WATER FLOW AND RETURN SYSTEM A Rheem 874 series 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 52 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 53 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 54 INSTALLATION – WATER HEATER DIMENSIONS AND TECHNICAL DATA 874 824 874 826, 874 T26 Model 876 826, 876 T26 Rated delivery - (@ 40°C rise) litres / min 16.2 Recovery - (@ 25°C rise) litres / min Mass Empty (unpackaged) Hourly Gas Min.
Page 55 INSTALLATION – WATER HEATER DIMENSIONS – STANDARD CONTROLLERS Kitchen Controller (Standard) Bathroom Controller (Standard)
Page 56 INSTALLATION – WATER HEATER DIMENSIONS – DELUXE CONTROLLERS Deluxe Controller – Cover Closed Deluxe Controller – Cover Open...
Page 57 INSTALLATION – WATER HEATER TYPICAL INSTALLATION – OUTDOOR LOCATION...
Page 58  874 series 824, 826 and T26 model water heaters when installed as an in-series gas booster to a solar water heater do not need to be installed with a solar transfer valve if the maximum solar preheat water heater does not exceed 80°C.
Page 59 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 label for gas types and pressures.
Page 60 CONNECTIONS – ELECTRICAL WIRING DIAGRAM Wiring Diagram – 874, 876 Series 824, 826, T26 Models...
Page 61 Ez-link system installation.  A temperature controller(s) may be installed with the EZ-Link system on an 874 and 876 series 824, 826 or T26 model dual installation. The controller can be either a standard or Deluxe controller.
Page 62 A temperature controller should not be installed if two 874 series 824, 826 or T26 model water heaters have been Ez-Linked together and they are part of a circulated hot water flow and return system in a building. Refer “Circulated Hot Water Flow And Return System”...
Page 63 EZ-LINK SYSTEM DUAL INSTALLATION EZ-LINK CABLE CONNECTION ‘Control Board with Ez-Link Connection’ The references in steps 7 to 10 are to the diagram on page 64. To connect the Ez-Link cable to the water heaters: Close any hot taps and ensure the burners on both water heaters are not operating. Switch off the electrical supply at the power outlet to each water heater.
Page 64 The minimum operating flow rate for each water heater is 1.5 Litres per minute. Turn off the hot taps. “Commissioning” Refer to on page 73 for details on completing the installation. Control Board with Ez-Link Connection 874 and 876 series 824, 826 and T26 models...
Page 65 EZ-LINK SYSTEM DUAL INSTALLATION Typical Two Unit Manifold with Ez-Link Connection 874 and 876 series 824, 826 and T26 models...
Page 66 INSTALLATION – CONTROLLERS 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. These are the standard controllers and the Deluxe controllers.
Page 67 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 68 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 69 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 70 If only one Bathroom controller is to be installed, the standard Bathroom1 Controller (Rheem AU - Part 299854, NZ - Part A299851) or the Bathroom1 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 Bathroom1 controller and the...
Page 71 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 72 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 flip down the electrical cover on the underside of the water heater. Draw the cable(s) through the electrical cover.
Page 73 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 74 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 75 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 76 COMMISSIONING Notes:  If the burners extinguish and an 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 76) ...
Page 77 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 78 COMMISSIONING Warning: The removal of the front panel will expose 240 volt 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 79 OUTLET TEMPERATURE COMPENSATION ADJUSTMENT – 876 SERIES The maximum outlet temperature of an 876 series 824, 826 and T26 model water heater may be adjusted to compensate for temperature losses in the pipe work between the water heater outlet and sanitary fixtures. The 876 series is available in Australia only.
Page 80 COMMISSIONING Note: The preset outlet temperature setting of this water heater must be set at 50°C prior to the commencement of this procedure. This procedure cannot be performed if the preset outlet temperature is set “To Check or Adjust the Preset Outlet Temperature Setting” below 50°C.
Page 81 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 83). ...
Page 82 DRAINING THE WATER HEATER To drain the water heater:  “Turn Off The Water Heater” Turn off the water heater (refer to on page 81).  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 83 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 84 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 follows:...

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