Rheem 18 Owner's Manual & Installation Instructions

Rheem 18 Owner's Manual & Installation Instructions

Electronic continuous flow gas water heater
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Owner's Guide
and
Installation Instructions
Electronic Continuous Flow
Gas Water Heater
874, 876 series
018, 020 models
This water heater must be installed and serviced by an authorised person.
Please leave this guide with the householder.

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Summary of Contents for Rheem 18

  • Page 1 Owner’s Guide Installation Instructions Electronic Continuous Flow Gas Water Heater 874, 876 series 018, 020 models This water heater must be installed and serviced by an authorised person. Please leave this guide with the householder.
  • Page 2 Rheem Australia Pty Ltd or Paloma Industries Ltd. Rheem Australia Pty Ltd is the supplier of the Rheem range of electronic continuous flow gas water heaters, manufactured by Paloma Industries Ltd, a world leader in water heater technology and manufacture.
  • Page 3: Table Of Contents

    CONTENTS HOUSEHOLDER - We recommend you read pages 4 to 41. The other pages are intended for the installer but may be of interest. About Your Water Heater ......................4 Temperature Control ........................9 Temperature Control – Standard ..................... 10 Temperature Control –...
  • Page 4: About Your Water Heater

    ABOUT YOUR WATER HEATER MODEL TYPE ® The Rheem electronic continuous flow gas water heater model you have chosen is for outdoor installation “Warranty” only. This model has an extended warranty (refer to on page 80). The water heater has a maximum preset outlet temperature setting of:...
  • Page 5 The setting controller temperature setting 876 series can only be adjusted by the installer, your nearest Rheem Service Department or their Accredited Service Agent. minimum Kitchen and Bathroom If this water heater is installed as part of a solar water heater...
  • Page 6 If the power supply cord or plug is damaged, it must be replaced by an authorised person in order to avoid a hazard. The power supply cord and plug must be replaced with a genuine replacement part available from Rheem. Phone your nearest Rheem Service Department or Accredited Service Agent to arrange for an inspection.
  • Page 7 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 8 SERVICING For safe and efficient operation, the water heater should be serviced annually by your nearest Rheem Service Department or their Accredited Service Agent. Only genuine replacement parts should be used on this water heater.
  • Page 9: 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. These are the standard controllers and the Deluxe controllers.
  • Page 10: 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 11 TEMPERATURE CONTROL – STANDARD STANDARD CONTROLLER integrity priority light in use light  up display panel button water volume symbol  down button water volume operating light on / off operating light water volume button on / off controller type button K = Kitchen B1 = Bathroom1...
  • Page 12 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 13 TEMPERATURE CONTROL – STANDARD TEMPERATURE ADJUSTMENT – STANDARD CONTROLLER A controller must be on and have priority to be able to adjust the temperature setting. The temperature adjustment is made by pressing the up () button or down () button. The maximum temperature setting for the controllers are: Kitchen Bathroom...
  • Page 14 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 60ºC 876 series...
  • Page 15 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 14.
  • Page 16 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 50ºC 876 series...
  • Page 17 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 16.
  • Page 18 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 19 TEMPERATURE CONTROL – STANDARD Turn off the alarm i n us e pri ori ty Press the water volume button to turn off the alarm.  The water volume operating light goes out and 0 x10l is displayed momentarily on the controller. The temperature setting of the controller with priority is then displayed.
  • Page 20: 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 21 BATH FILL VOLUME TEMPERATURE  up button  up button BATH FILL BATH FILL VOLUME TEMPERATURE BATH FILL BATH FILL Rheem TEMPERATURE VOLUME  down button  down button Bath Fill Bath Fill Bath Bath BATH FILL BATH FILL completed...
  • Page 22 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 23 Note: If the ON / OFF button is not pressed within four (4) seconds of the up () button being pressed, Rheem “CL” will start flashing on the temperature display panel. If this occurs, release the up () button and recommence the procedure.
  • Page 24 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 25 TEMPERATURE CONTROL – DELUXE TEMPERATURE ADJUSTMENT – DELUXE CONTROLLERS A controller must be on with the ACTIVE indicator displayed to be able to adjust the temperature setting. The temperature adjustment is made by pressing the up () button or down () button. The minimum temperature setting for each type of controller is 37 C.
  • Page 26 Deluxe controllers, including the bath fill function if it is on, the displays go blank and the lights go out. If hot water is flowing from a hot tap, it will go cold. ACTIVE °C 1 2 0 BATH (l) BATH FILL ON/OFF Rheem Kitchen Deluxe Controller...
  • Page 27 Kitchen Deluxe controller  on page 26. BATH FILL ON/OFF Turn on the Kitchen Deluxe controller Rheem Press the ON / OFF button.  ACTIVE The light in the ON / OFF button and the ACTIVE °C 8 8 8 8 light will both glow.
  • Page 28 Fill Button Fill Button open (Red light on) (Red light flashes) 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 29 Bathroom Deluxe BATH FILL ON/OFF controllers on page 28. Turn on the Bathroom Deluxe controller Rheem Press the ON / OFF button.  ACTIVE The light in the ON / OFF button and the ACTIVE °C 8 8 8 8 light will both glow.
  • Page 30 Refer to the notes on the Bathroom Deluxe controllers on page 28. BATH FILL ON/OFF Pull down the front panel on the Deluxe controller. Rheem BATH FILL BATH FILL The BATH FILL VOLUME and BATH FILL TEMPERATURE VOLUME TEMPERATURE up () and down () buttons will be exposed.
  • Page 31 1 2 0 BATH (l) TEMPERATURE CONTROL – DELUXE BATH FILL ON/OFF Close the front panel on the Deluxe controller. Rheem Turn on the Bath Fill mode Press the BATH FILL button.  On all Deluxe controllers: ACTIVE °C 1 2 0 ...
  • Page 32 Bath Fill mode. BATH FILL BATH FILL VOLUME TEMPERATURE Rheem Pull down the front panel on the Deluxe controller. BATH FILL VOLUME BATH FILL TEMPERATURE up () and down () buttons will be...
  • Page 33 BATH FILL BATH FILL While the bath fill water volume is displayed, each volume has been VOLUME TEMPERATURE Rheem increased, subsequent press of the BATH FILL VOLUME bath may overflow”  (up button) BATH FILL VOLUME  (down button) will change the water volume “bath fill water...
  • Page 34 TEMPERATURE CONTROL – DELUXE Open the hot tap. The operating light will glow on all Deluxe controllers. ACTIVE Measurement of the water flow at the water heater will °C 1 2 0 commence when the hot tap is opened. BATH (l) Notes: BATH FILL ON/OFF...
  • Page 35 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 36 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 37 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 38 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 32). 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 39: 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 “Warranty” fault, which is not related to manufacture or failure of a part (refer to on page 80). NO DISPLAY ON THE CONTROLLER Is the controller turned on? “Temperature Control”...
  • Page 40 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 41 If the error code persists, take note of the numerical code if a controller(s) is installed and the number of flashes on the OK MONITOR, turn off the hot tap and turn off the controller(s). Phone your nearest Rheem Service Department or Accredited Service Agent to arrange for inspection. HIGH GAS BILLS...
  • Page 42: 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) The 874 series of water heater may be installed as an in-series gas booster water heater to a solar preheat water heater.
  • Page 43 INSTALLATION – WATER HEATER As a guide the following requirements extracted from the Australian Gas Installations Standard AS 5601, must be observed. At least 300 mm between the top of the flue terminal and the eaves. At least 300 mm between the flue terminal and the edge of any opening into the building, measured horizontally along the wall.
  • Page 44 (such as an RMC PSL series valve) is required and should be fitted as shown in the installation diagram (refer to page 52). 018 - 020 Model Relief valve setting 1750 kPa Max.
  • Page 45 99°C if the solar preheat water heater does not have an over temperature protection system to limit the water to no greater than 90°C, such as the Rheem Premier Hiline thermosiphon closed circuit system. Warning: Temperature controllers must not be fitted to this water heater as part of a solar water heater system (874 series) because water at a temperature much higher than the controller setting can be delivered.
  • Page 46 INSTALLATION – WATER HEATER Where a temperature limiting device is installed adjacent to the gas booster water heater, 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 47 INSTALLATION – WATER HEATER CIRCULATED HOT WATER FLOW AND RETURN SYSTEM A Rheem continuous flow water heater cannot be installed as part of a circulated hot water flow and return system in a building. If a circulated flow and return system is required, it is necessary to bypass the continuous flow water heater and install a secondary water heater connected to the hot water flow and return line and supplied from the continuous flow water heater.
  • Page 48 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 49 Empty Hourly Gas Min. Gas Max. Gas Gas Details Test Point Gas Pressure (kPa) Consumption Pressure Pressure minimum maximum (MJ) (kPa) (kPa) 018 to 020 018 to 020 Natural 1.13 0.170 0.170 0.740 0.870 3.50 Propane 2.75 0.190 0.190 0.885 1.185...
  • Page 50 INSTALLATION – WATER HEATER DIMENSIONS – STANDARD CONTROLLERS Kitchen Controller (Standard) Bathroom Controller (Standard)
  • Page 51 INSTALLATION – WATER HEATER DIMENSIONS – DELUXE CONTROLLERS Deluxe Controller – Cover Closed Bath Fill Bath Fill completed Bath Bath (automatic) Fill Water BATH FILL BATH FILL Volume Temp Bath Fill Button Press Bath Press Bath (Red light flashes) Bath Fill Fill Button Fill Button Set Bath Fill Water Volume...
  • Page 52 TYPICAL INSTALLATION ELECTRONIC INSTANTANEOUS GAS WATER HEATER INSTALLATION – WATER HEATER TYPICAL INSTALLATION – OUTDOOR LOCATION...
  • Page 53 INSTALLATION – WATER HEATER TYPICAL INSTALLATION – GAS BOOSTER FOR SOLAR WATER HEATER Typical Installation - Solar In-Line Gas Booster Solar Loline Open Circuit With An In-Series Gas Booster Water Heater Solar Pumped Open Circuit Systems Typical Installation Solar Premier Loline Closed Circuit With An In-Series Gas Booster Water Heater Solar Drain Back Storage Tank with Remote In-Series Gas Boost...
  • Page 54: Typical Installation

    INSTALLATION – WATER HEATER Solar Hiline Open Circuit With An In-Series Gas Booster Water Heater TYPICAL INSTALLATION SOLAR OPEN CIRCUIT THERMOSIPHON WITH IN-SERIES GAS BOOSTER TYPICAL INSTALLATION Solar Premier Hiline Closed Circuit With An In-Series Gas Booster Water Heater SOLAR CLOSED CIRCUIT THERMOSIPHON WITH IN-SERIES GAS BOOSTER...
  • Page 55: Connections – Plumbing

    CONNECTIONS – PLUMBING CONNECTION SIZES Model 018 to 020 Hot water connection R¾/20 Cold water connection R¾/20 Gas inlet R¾/20 All plumbing work must be carried out by a qualified person and in accordance with the National Plumbing Standard AS/NZS 3500.4 and local authority requirements.
  • Page 56 CONNECTIONS – PLUMBING PIPE SIZES The pipe sizing for hot water supply systems should be carried out by persons competent to do so, choosing the most suitable pipe size to ensure adequate flow for each individual application. Reference to the technical specifications of the water heater and local regulatory authority requirements must be made.
  • Page 57: Connections – Electrical

    The power consumption of the water heater is: Power Comments Component consumption 018 - 020 – Burner on, anti frost device inactive Gas water heater 61 Watts 018 - 020 – Burner on, anti frost device active 151 Watts The water heater will only operate on a sine wave at 50 Hz. Devices generating a square wave cannot be...
  • Page 58: Ez-Link System Dual Installation

    The second water heater will only operate when the hot water demand exceeds the capacity of the first water heater to supply. The EZ-Link system is suitable for installation with Rheem 874 and 876 series 018 and 020 models continuous flow gas water heaters. The Ez-Link Kit PN 290141 is required for the installation.
  • Page 59 The two continuous flow water heaters can be installed side by side with minimal clearance between them. The AGA has approved the installation of two Rheem 874 and 876 series 018 and 020 model water heaters with an exemption from the 300 mm minimum clearance requirements between flue terminals, as stated in AS 5601, clause 5.13.6.5.
  • Page 60 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 61. 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 61 EZ-LINK SYSTEM DUAL INSTALLATION Controller Cable (one water heater only) REMOTE CONTROLLER TERMINAL 1 2 3 4 Ez-Link Cable Secure cable with cable clamp & screw 1 2 3 4 Dip Switch 4 in the on (up) position MANIFOLD INSTALLATION - EZ LINK CONNECTION Control Board with Ez-Link Connection TWO CONTINUOUS FLOW WATER HEATERS eaves, balconies...
  • Page 62: 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 63 INSTALLATION – CONTROLLERS 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 64 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 65 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 66 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 67 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 68 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 69: 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 70 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 71 Rheem Turn on the controller by pressing the on / off button. The priority light (standard controller) or ACTIVE light (Deluxe controller) and the light in the on / off button will both glow.
  • Page 72 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 73 MAX button instead of the MIN button. It may be necessary to open two or three hot taps fully, depending upon the model of water heater and the incoming cold water temperature. Note: In Step 11, “3H” (018, 020 models) will be shown on the controller display. After setting the minimum and maximum test point gas pressures: Close the hot tap.
  • Page 74 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 75 COMMISSIONING It is necessary to have the electrical supply to the water heater switched on during stages of checking or adjusting the preset outlet temperature setting procedure. Warning: The removal of the front panel will expose 240 volt wiring. Take care not to touch wiring terminals.
  • Page 76 COMMISSIONING TO TURN OFF THE WATER HEATER If it is necessary to turn off the water heater on completion of the installation, such as on a building site or where the premises is vacant, then: 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 77: 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 76). 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 78 This page is intentionally blank.
  • Page 79: Warranty

    Rheem accredited Service WARRANTY EXCLUSIONS 1. REPAIR AND REPLACEMENT WORK WILL BE CARRIED OUT AS SET OUT IN THE RHEEM WATER HEATER WARRANTY, HOWEVER THE FOLLOWING EXCLUSIONS MAY CAUSE THE WATER HEATER WARRANTY TO BECOME VOID AND MAY INCUR A SERVICE CHARGE AND / OR COST OF PARTS.
  • Page 80 Notes: * Rheem is the supplier of Rheem electronic continuous flow gas water heaters, manufactured by Paloma Industries Ltd, a world leader in water heater technology and manufacture. ** Refer to items 4 and 5 of warranty conditions.

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