Rheem 27 874 Series Owner's Manual And Installation Instructions
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Rheem 27 874 Series Owner's Manual And Installation Instructions

Electronic continuous flow 27 gas water heater
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  • Page 2 Rheem Australia Pty Ltd or Paloma Industries Ltd. Rheem New Zealand 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 73. 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  ...

  • 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 only. This model has an extended warranty (refer to “Warranty” on page 73). The water heater has a preset outlet temperature setting of: 874 series 55°C...
  • Page 5 874 series Note: heater cannot be adjusted by the householder. The setting can only be adjusted by the installer, or an Accredited Rheem Service Centre. 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 Centre 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 Accredited Service Centre. Only genuine replacement parts should be used on this water heater. Warning: Servicing of a gas water heater should only be carried out by authorised personnel.

  • Page 9: Temperature Control

    TEMPERATURE CONTROL CONTROLLERS The Rheem 874 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 priority light in te g rity in use light 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 48°C (in 1°C increments), 50°C • Kitchen 37°C to 48°C (in 1°C increments), 50°C*, 55°C Temperature settings warm average hot shower very hot...
  • 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. •...
  • 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: •...
  • 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: •...
  • 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 priority in us e Press the water volume button to turn off the alarm. The water volume operating light goes out and 0 x10l is °C 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 BATH FILL VOLUME TEMPERATURE up button up button BATH FILL BATH FILL VOLUME TEMPERATURE BATH FILL BATH FILL Rheem VOLUME TEMPERATURE down button down button Bath Fill Bath Fill Bath Bath BATH FILL BATH FILL completed Deluxe controller type...
  • 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 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 24 TEMPERATURE CONTROL – DELUXE TEMPERATURE SETTINGS – DELUXE CONTROLLERS The temperature settings of each type of Deluxe controller are: • Bathroom1 & 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 (Limited to 48ºC when set in bathfill mode.) Temperature settings warm...
  • 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. •...
  • 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 1 2 0 °C BATH (l) BATH FILL ON/OFF Rheem Kitchen Deluxe Controller...
  • Page 27 TEMPERATURE CONTROL – DELUXE To operate the Kitchen Deluxe controller: Turn off the Bathroom Deluxe controller(s) 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 5 5  ...
  • Page 28 Bath Fill Bath Fill  completed  Bath Bath BATH FILL  BATH FILL front cover Water Fill  (automatic)  Press Bath  Press Bath Volume Temp Bath Fill Button  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 2.  3.  ACTIVE  Adjust  Open hot ON/OFF Light on  Temperature  tap  Press ...
  • Page 29 TEMPERATURE CONTROL – DELUXE To operate a Bathroom Deluxe controller: Turn off the Kitchen Deluxe controller  ACTIVE If a temperature setting is displayed and the ACTIVE  8 8 8 8 5 5   °C and  ON / OFF  operating  lights  are  not  glowing,  it  is  BATH (l)  advised to turn off the Kitchen Deluxe controller.  Refer  to  the  notes  on  the  Bathroom  Deluxe  BATH FILL ...
  • Page 30 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 31 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 4 0   1 2 0 °C The BATH FILL operating light will glow.
  • 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 5. ...
  • Page 33 While the bath fill water volume is displayed, each BATH FILL  BATH FILL  volume has been VOLUME TEMPERATURE  Rheem subsequent press of the BATH FILL VOLUME increased, 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 1 2 0 4 0   °C commence when the hot tap is opened. BATH (l) ...
  • 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 •...
  • Page 36 TEMPERATURE CONTROL – DELUXE Notes on the Bath Fill mode: • The Bath Fill mode can be set and turned on 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: 3, when the bath fill temperature is being set...

  • 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 fault, which is not related to manufacture or failure of a part (refer to “Warranty” on page 74). NO DISPLAY ON THE CONTROLLER •...
  • 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, turn off the hot tap and turn off the controller(s). Phone your nearest Rheem Service Department or Accredited Service Centre to arrange for inspection.

  • 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 New Zealand Gas Installations Standard NZS 5261, must be observed. • At least 300 mm between the top of the flue terminal and the eaves. • At least 300 mm (024) or 500 mm (027) between the flue terminal and the edge of any opening into the building, measured horizontally along the wall.
  • Page 44 INSTALLATION – WATER HEATER MAINS WATER SUPPLY Where the mains water supply pressure exceeds that shown in the table below, an approved pressure limiting valve that does not have non return valve characteristics (such as an RMC PSL series valve) is required and should be fitted as shown in the installation diagram (refer to page 52).
  • 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 55°C 55°C 874 Series - Kitchen and Bathroom Controllers 55°C 55°C 874 Series - Kitchen Controller Only 874 Series - Bathroom Controllers Only 55°C 874 Series - No Controllers Notes: • Temperature Limiting Devices – refer to “Hot Water Delivery”...
  • Page 49 INSTALLATION – WATER HEATER Dimensions And Technical Data 874 027 Model Rated delivery 16.5 litres / min (@ 40°C rise) Recovery litres / min (@ 25°C rise) Empty Mass Hourly Gas Test Point Gas Pressure (kPa) Gas Details Min Gas Pressure Max Gas Pressure Consumption (kPa)
  • 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) Water Fill BATH FILL BATH FILL Volume Temp Bath Fill Button Press Bath Press Bath (Red light flashes) Fill Button Set Bath Fill Water Volume Fill Button (Red light on)

  • Page 52: Typical Installation

    INSTALLATION – WATER HEATER TYPICAL INSTALLATION – OUTDOOR LOCATION TYPICAL INSTALLATION ELECTRONIC CONTINUOUS FLOW GAS WATER HEATER EXTERNAL MODELS 874 SERIES NZS 5261...
  • Page 53 INSTALLATION – WATER HEATER TYPICAL INSTALLATION – GAS BOOSTER FOR SOLAR WATER HEATER Solar Loline Open Circuit With An In-Series Gas Booster Water Heater (Top) Solar Premier Loline Closed Circuit With An In-Series Gas Booster Water Heater (Bottom) NZS: 5261 NZS:5261 NZS:5261 NZS:5261...
  • Page 54 INSTALLATION – WATER HEATER NZS:5261 Solar Hiline Open Circuit with an In-Series Gas Booster Water [Type a quote from the document or the summary of an interesting point. You can position the text box anywhere in the document. Use the Text Box Tools tab to change the formatting of the pull quote text box.] NZS:5261...

  • Page 55: Connections – Plumbing

    CONNECTIONS – PLUMBING CONNECTION SIZES 874 027 Model Hot water connection R¾/20 Cold water connection R¾/20 Gas inlet connection 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. All gas work must be carried out by a qualified person and in accordance with the New Zealand Gas Installations Standard NZS 5261 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

    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 local authority requirements. Warning: Temperature controllers must not be fitted to this water heater (874 series) as part of a solar water heater system or if a Water Star water heater is installed because water at a temperature much higher than the controller setting can be delivered.

  • Page 58: Installation – Controllers

    INSTALLATION – CONTROLLERS CONTROLLERS The Rheem 874 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 59 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 temperature setting of: •...
  • Page 60 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 61 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 62 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 63 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 64 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. CABLE Draw the cable(s) through the electrical cover.
  • Page 65 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 66 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 67 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 68 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 recommence the procedure from Step 8. • If the adjuster button is released before Step 13, clear any error code (if displayed) and recommence the procedure from Step 8.
  • Page 69 COMMISSIONING PRESET OUTLET TEMPERATURE SETTING The factory preset outlet temperature setting of the water heater is: • 874 series 55°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 Kitchen controller connected...
  • Page 70 WARNING: TEMPERATURE CHANGE MUST ONLY BE MADE BY A QUALIFIED INSTALLER OR RHEEM SERVICE CENTRE REPRESENTITIVE. SEVERE SCALD INJURIES COULD OCCUR IF BATHROOMS AND ENSUITES ARE NOT PROTECTCED BY A HOT WATER TEMPERING DEVICE. TO CHECK OR ADJUST THE PRESET OUTLET TEMPERATURE SETTING The temperature settings will be displayed on the LED display.
  • Page 71 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 are 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 72: 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 71). • 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 73: Water Quality

    Notes: *Rheem New Zealand limited 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 item 4 of warranty conditions.
  • Page 74 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.

This manual is also suitable for:

874 series

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