Rheem 612 Owner's Manual And Installation Instructions

Rheem 612 Owner's Manual And Installation Instructions

874/876 series continuous flow gas water heater

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Owner's Guide
and

Installation Instructions

Continuous Flow
Gas Water Heater
874, 876 series
612 to 620, E16 models
This water heater must be installed and serviced by a qualified person.
Please leave this guide with the householder.

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Table of Contents
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Summary of Contents for Rheem 612

  • Page 1: Installation Instructions

    Owner’s Guide Installation Instructions Continuous Flow Gas Water Heater 874, 876 series 612 to 620, E16 models This water heater must be installed and serviced by a qualified person. Please leave this guide with the householder.
  • 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 83). The water heater has a maximum preset outlet temperature setting of: 874 series 70°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 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 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.
  • 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 return system in a building. Refer to “Circulated Hot Water Flow and Return System”...
  • 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 by the Rheem warranty (refer to “Terms of the Rheem Warranty”...
  • 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 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

    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 i up display panel button water volume symbol j 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 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 48°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 (i) button or down (j) 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: 874 series 60°C 876 series...
  • Page 17 TEMPERATURE CONTROL – STANDARD To operate the Kitchen controller: Turn off the Bathroom controller(s) ƒ 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. ƒ...
  • 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: 874 series 50°C 876 series...
  • Page 19 TEMPERATURE CONTROL – STANDARD To operate a Bathroom controller: Turn off the Kitchen controller ƒ 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 u s e pri ori ty ƒ Press the water volume button to turn off the alarm. The water volume operating light goes out and 0 x10 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 VOLUME TEMPERATURE i i up button i i up button BATH FILL BATH FILL VOLUME TEMPERATURE BATH FILL BATH FILL Rheem VOLUME TEMPERATURE j j down button j j down button Bath Fill Bath Fill BATH FILL BATH FILL Bath...
  • 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 on an 876 series model and when set to Bath Fill mode on 874 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 (i) button or down (j) 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 1 2 0 °C BATH (l) BATH FILL ON/OFF Rheem Kitchen Deluxe Controller...
  • Page 29 TEMPERATURE CONTROL – DELUXE To operate the Kitchen Deluxe controller: Turn off the Bathroom Deluxe controller(s) ƒ If a temperature setting is displayed and the ACTIVE ACTIVE light is not glowing, it is necessary to turn off the 8 8 8 8 °C Bathroom Deluxe controller(s) to gain priority.
  • 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 TEMPERATURE CONTROL – DELUXE To operate a Bathroom Deluxe controller: Turn off the Kitchen Deluxe controller ƒ If a temperature setting is displayed and the ACTIVE ACTIVE and ON / OFF operating lights are not glowing, it is 8 8 8 8 °C advised to turn off the Kitchen Deluxe controller.
  • Page 32 TEMPERATURE CONTROL – DELUXE BATH FILL MODE The Bath Fill mode is designed to allow the water heater to deliver a selected volume of water at a selected temperature. The Bath Fill mode commences when the BATH FILL button is on and a hot tap is opened. When the set volume has been delivered, the water flow from the water heater ceases and heating stops.
  • Page 33 TEMPERATURE CONTROL – DELUXE 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 1 2 0 °C ¾ The BATH FILL operating light will glow.
  • 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 volume has been VOLUME TEMPERATURE While the bath fill water volume is displayed, each Rheem increased, subsequent press of the BATH FILL VOLUME bath may overflow” i (up button) BATH FILL VOLUME “bath fill water...
  • Page 36 TEMPERATURE CONTROL – DELUXE Open the hot tap. The operating light will glow on all Deluxe controllers. ACTIVE 1 2 0 °C 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

    Check the items below before making a service call. You will be charged for attending to any condition or fault, which is not related to manufacture or failure of a part (refer to “Terms of the Rheem Warranty” 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 OK MONITOR, turn off the hot tap and turn off the controller(s). Phone Rheem Service or their nearest Accredited Service Agent to arrange for an inspection. HIGHER THAN EXPECTED GAS BILLS...
  • Page 45: 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: by a qualified person, and...
  • 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 53 for...
  • 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 indirect system. 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 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 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 51 INSTALLATION – WATER HEATER Circulated Hot Water Flow and Return Continuous Flow Gas Water Heater from solar storage tank Circulated Hot Water Flow and Return In-series Gas Booster as part of a Solar Water Heater Installation REDUCING HEAT LOSSES The hot water line from the water heater and the pipe work between the solar storage tank, if one is installed, and the in-series gas booster must be insulated in accordance with the requirements of AS/NZS 3500.4.
  • Page 52 INSTALLATION – WATER HEATER WATER TEMPERATURE DIAGRAMS 874 Series - Kitchen and Bathroom Controllers 876 Series – Kitchen and Bathroom Controllers 874 Series - Kitchen Controller Only 876 Series - Kitchen Controller Only 874 Series - Bathroom Controllers Only 876 Series - Bathroom Controllers Only 874 Series - No Controllers 876 Series - No Controllers Notes:...
  • Page 53 Min. Gas Max. Gas Gas Details Test Point Gas Pressure (kPa) Hourly Gas Consumption Pressure Pressure (MJ) minimum maximum (kPa) (kPa) 612 to 620, 616 to 620, 612 to 620, Natural 1.13 0.190 0.170 0.810 0.620 0.755 0.870 3.50 Propane 2.75...
  • Page 54 INSTALLATION – WATER HEATER DIMENSIONS – STANDARD CONTROLLERS Kitchen Controller (Standard) Bathroom Controller (Standard)
  • Page 55 INSTALLATION – WATER HEATER DIMENSIONS – DELUXE CONTROLLERS Deluxe Controller – Cover Closed Deluxe Controller – Cover Open...
  • Page 56 INSTALLATION – WATER HEATER TYPICAL INSTALLATION – OUTDOOR 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 874 612 874 616, 874 E16 874 618 874 620...
  • 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: Connections - Electrical

    Component Comments consumption Gas water heater 61 Watts 612 – 620, E16 – Burner on, anti frost device inactive 138 Watts 612 – Burner on, anti frost device active 143 Watts 616, E16 – Burner on, anti frost device active 147 Watts 618 –...
  • Page 60: Ez-Link System Dual Installation

    The EZ-Link system is suitable for installation with Rheem 874 and 876 series 612, 616, E16, 618 and 620 model continuous flow gas water heaters. The Ez-Link Kit PN 290141 is required for the installation.
  • Page 61 A temperature controller should not be installed if two 874 series 612, 616, E16, 618 or 620 model water heaters have been Ez-Linked together and they are part of a circulated hot water flow and return system in a building.
  • Page 62 EZ-LINK SYSTEM DUAL INSTALLATION EZ-LINK CABLE CONNECTION The references in steps 5 to 8 are to the ‘Control Board with Ez-Link Connection’ diagram on page 63. 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 63 The minimum operating flow rate for each water heater is 2.5 litres per minute. Turn off the hot taps. Refer to “Commissioning” on page 72 for details on completing the installation. Control Board with Ez-Link Connection 874 and 876 series 612, 616, E16, 618 and 620 models...
  • Page 64 EZ-LINK SYSTEM DUAL INSTALLATION Typical Two Unit Manifold with Ez-Link Connection 874 and 876 series 612, 616, E16, 618 and 620 models...
  • Page 65: Installation - Controllers

    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 66 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 67 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 68 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 69 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 70 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 71 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 front panel from the water heater. Draw the cable(s) through the cable grommet on the underside of the water heater.
  • Page 72: 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 73 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 74 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 75 COMMISSIONING Press and hold down the MIN button (“1L” is shown on the controller display), and observe the reading on the manometer. The red LED will glow and remain solid. Release the MIN button. The red LED goes out. If the manometer reading observed in step 11 agrees with the rating label, no further adjustment is required.
  • Page 76 COMMISSIONING Maximum test point gas pressure Refer to the rating label on the water heater for the maximum test point gas pressure. Follow Steps 10 to 16 of the “Minimum test point gas pressure” procedure on page 74, but open the hot tap fully and use the MAX button instead of the MIN button.
  • Page 77 COMMISSIONING PRESET OUTLET TEMPERATURE SETTING The factory preset outlet temperature setting of the water heater is: 874 series 60°C 876 series 48°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 876 series...
  • Page 78 COMMISSIONING TO CHECK OR ADJUST THE PRESET OUTLET TEMPERATURE SETTING The temperature setting will be displayed by a series of flashes from the red LED, with a three (3) second pause between each series of flashes. The preset outlet temperature settings and series of flashes are: 874 series 55°C (1 flash), 60°C (2 flashes), 70°C (3 flashes) 876 series...
  • Page 79 OUTLET TEMPERATURE COMPENSATION ADJUSTMENT – 876 SERIES The maximum outlet temperature of an 876 series 612 to 620 and E16 model water heater may be adjusted to compensate for temperature losses in the pipe work between the water heater outlet and sanitary fixtures.
  • Page 80 COMMISSIONING Note: The preset outlet temperature setting of this water heater must be set at 48°C prior to the commencement of this procedure. This procedure cannot be performed if the preset outlet temperature is set at 43°C or 45°C. Refer to “To Check or Adjust the Preset Outlet Temperature Setting”...
  • Page 81 Damage caused by freezing due to the unavailability of power at the water heater is not covered by the Rheem warranty (refer to “Terms of the Rheem Warranty” on page 83). If the power has been switched off to the water heater and there is a risk of freezing, then it is necessary to drain the water heater (refer to “Draining the Water Heater”...
  • Page 82: Draining The Water Heater

    DRAINING THE WATER HEATER To drain the water heater: Turn off the water heater (refer to “Turn Off The Water Heater” 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: 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 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...

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