Owner’s Guide and Installation Instructions Electronic Continuous Flow Gas Indoor Water Heater 864, series 027 models INSTALLER: The ONLY suitable flue parts are certified Rheem coaxial flue components carrying the following label: DO NOT use any other type of flue parts. Carefully follow the Installation Instructions.
Notice to Rheem customers. This water heater must be installed by a licensed person Only a licensed person will give you a Compliance Certificate, showing that the work complies with all the relevant Standards. Only a licensed person will have insurance protecting their workmanship. Make sure you use a licensed person to install this water heater and ask for your Compliance Certificate.
CONTENTS HOUSEHOLDER - We recommend you read pages 4 to 42. The other pages are intended for the installer but may be of interest. About Your Water Heater............................................................................................................ 4 Temperature Control ................................................................................................................... 9 Temperature Control – Standard ............................................................................
ABOUT YOUR WATER HEATER MODEL TYPE The Rheem® electronic continuous flow gas water heater model you have chosen is for indoor installation only. This model has an extended warranty (refer to “Warranty” on page 96). The water heater has a maximum preset outlet temperature setting of: • 864 series 75°C Notes: • The 864 series water heater may be installed as an in-series gas booster water heater to a solar preheat water heater.
ABOUT YOUR WATER HEATER MAINS PRESSURE The water heater is designed for direct connection to the mains water supply. If the mains supply pressure in your area exceeds that shown on page 45, a pressure limiting valve must be fitted. The supply pressure should be greater than 140 kPa for the rated flow and performance to be achieved.
ABOUT YOUR WATER HEATER Warning This water heater is only intended to be operated by persons who have the experience or the knowledge and the capabilities to do so. This water heater is not intended to be operated by persons with reduced physical, sensory or mental capabilities i.e. the infirm, or by children. Children should be supervised to ensure they do not interfere with the water heater. The water heater uses 240 Volt AC electrical power for operation of the control systems and the combustion fan.
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. • Switch off the electrical supply at the power outlet to the water heater if there is no risk of freezing conditions occurring (refer to note below).
ABOUT YOUR WATER HEATER HOW LONG WILL THE WATER HEATER LAST? There are a number of factors that will affect the length of service the water heater will provide. These include the water chemistry, the water pressure, temperature (inlet and outlet) and the water usage pattern. However, your water heater is supported by a comprehensive warranty (refer to page 96).
TEMPERATURE CONTROL CONTROLLERS The Rheem 864 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. Standard Controllers There are three types of standard controller.
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. A controller cannot be turned on if water is flowing from a hot tap. To turn off a controller, press the on / off button once. The light will go out.
TEMPERATURE CONTROL – STANDARD STANDARD CONTROLLER priority light in te g rity in use light i up button display panel j down button water volume operating light on / off operating light water volume button on / off button controller type K = Kitchen B1 = Bathroom1 B2 = Bathroom2 Note: water volume button, water volume operating light and water volume symbol are on the Kitchen controller only. SILENCING A CONTROLLER – STANDARD The controller emits a sound whenever a button is pressed.
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 37 38 warm 39 40 41 42 43 44 average hot shower 45 46 47 hot 48 50 55 very hot The installation of a Bathroom controller(s) only (i.e.
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 864 series 55°C Bathroom 50°C • Each press of the up (i) button will increase the temperature setting by one increment.
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: • 864 series 55ºC The Kitchen controller does not have priority if a Bathroom controller is on. Notes on the Kitchen controller: • The controller cannot be turned on whilst a hot tap is open.
TEMPERATURE CONTROL – STANDARD To operate the Kitchen controller: 1. 2. 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. Turn on the Kitchen controller Press the on / off button. 50 The on / off operating light and the priority light will both glow.
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: • 864 series 50ºC The Bathroom controllers operate in tandem. Whenever an operation is selected on one Bathroom controller, it is also set on the other Bathroom controller.
TEMPERATURE CONTROL – STANDARD To operate a Bathroom controller: 1. 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. 2. Turn on the Bathroom controller Press the on / off button. 40 The on / off operating light and the priority light will both glow. The temperature setting of 40°C will be displayed. 3.
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. The water volume function can only be set by the Kitchen controller.
TEMPERATURE CONTROL – STANDARD 5. Turn off the alarm priority in us e Press the water volume button to turn off the alarm. 42 The water volume operating light goes out and 0 x10l is displayed momentarily on the controller. °C x10l The temperature setting of the controller with priority is then displayed. check hot water temperature before use 6.
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. ON / OFF button – The ON / OFF button must be pressed once to turn on the Deluxe controller. A Deluxe controller cannot be turned on if water is flowing from a hot tap.
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 mode is on (refer to “Bath Fill Mode” on page 30) or when the bath fill water volume is being adjusted and the Bath Fill mode is off.
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.
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.
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, Temperature settings 37 38 warm 39 40 41 42 43 44 average hot shower 45 46 47 48 hot 50 55 very hot The installation of a Bathroom Deluxe controller(s) only (i.e.
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.
TEMPERATURE CONTROL – DELUXE KITCHEN CONTROLLER – DELUXE The Kitchen Deluxe 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: • 864 series 55ºC The Kitchen Deluxe controller does not have priority (ACTIVE light is off) if a Bathroom Deluxe controller is on.
TEMPERATURE CONTROL – DELUXE To operate the Kitchen Deluxe controller: 1. Turn off the Bathroom Deluxe controller(s) 2. If a temperature setting is displayed and the ACTIVE light is not glowing, it is necessary to turn off the Bathroom Deluxe controller(s) to gain priority. Refer to the notes on the Kitchen Deluxe controller on page 26. 8888 BATH (l) 55 °C BATH FILL ON/OFF Turn on the Kitchen Deluxe controller Press the ON / OFF button.
TEMPERATURE CONTROL – DELUXE BATHROOM CONTROLLERS – DELUXE The Bathroom Deluxe 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: • 864 series 50ºC The Bathroom Deluxe controllers operate in tandem. Whenever an operation is selected on one Bathroom Deluxe controller, it is also set on the other Bathroom Deluxe controller.
TEMPERATURE CONTROL – DELUXE To operate a Bathroom Deluxe controller: 1. Turn off the Kitchen Deluxe controller If a temperature setting is displayed and the ACTIVE and ON / OFF operating lights are not glowing, it is advised to turn off the Kitchen Deluxe controller. Refer to the notes on the Bathroom Deluxe controllers on page 28. 2. 8888 BATH (l) 55 °C BATH FILL ON/OFF Turn on the Bathroom Deluxe controller Press the ON / OFF button.
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. It is also useful for controlling the water volume used by a shower or other application.
TEMPERATURE CONTROL – DELUXE 5. Close the front panel on the Deluxe controller. 6. Turn on the Bath Fill mode Rheem Press the BATH FILL button. On all Deluxe controllers: ¾ The BATH FILL operating light will glow. ¾ The bath fill temperature setting will appear on the temperature display panel. ¾ The bath fill water volume will appear on the bath fill water volume display panel. ¾ 7. ACTIVE The bath fill indicator light will glow.
TEMPERATURE CONTROL – DELUXE Bath Fill Mode – Explanatory Notes To operate the Bath Fill mode: 1. Turn off all Deluxe controllers It is advised to turn off all Deluxe controller(s) before activating the Bath Fill mode. ACTIVE 120 Refer to the notes on the Bathroom Deluxe controllers on page 28. °C 40 BATH (l) BATH FILL The Deluxe controllers do not need to be on to set the bath fill temperature and bath fill water volume and to turn on the Bath Fill mode.
TEMPERATURE CONTROL – DELUXE 4. Set the bath fill water volume Press the BATH FILL VOLUME i (up button) or the BATH FILL VOLUME j (down button). ACTIVE The first press of either the BATH FILL VOLUME i (up button) or the BATH FILL VOLUME j (down button) will display the last selected bath fill water volume setting in the bath fill water volume display panel and the bath fill indicator light will glow.
TEMPERATURE CONTROL – DELUXE 7. Open the hot tap. The operating light will glow on all Deluxe controllers. Measurement of the water flow at the water heater will commence when the hot tap is opened. Notes: ACTIVE 120 BATH (l) 40 °C BATH FILL If a second hot tap is opened when the Bath Fill mode is turned on, the set bath fill water volume expected from the first hot tap will be reduced by the volume which flows through the second hot tap.
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.
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. • The BATH FILL button cannot be turned on whilst a hot tap is open.
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.
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).
WATER SUPPLIES This water heater must be installed in accordance with this advice to be covered by the warranty. This water heater is manufactured to suit the water conditions of most public reticulated water supplies. However, there are some known water chemistries which can have detrimental effects on the water heater and its operation and / or life expectancy. If you are unsure of your water chemistry, you may be able to obtain information from your local water supply authority.
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 96). NO DISPLAY ON THE CONTROLLER • Is the controller turned on? Press the on / off button (refer to “Temperature Control” on pages 9 to 38). • Is the water heater plugged in and the power outlet switched on? • Is power available in the house? Try using another electrical appliance.
SAVE A SERVICE CALL GAS BOOSTER OPERATING TOO FREQUENTLY If the water heater is installed as a gas booster water heater to a solar preheat water heater, you may find that the water heater operates more frequently than expected. This will occur when the solar preheat water temperature is lower than 58°C, which may be experienced during periods of low solar energy gain or if there has been heavy hot water usage.
SAVE A SERVICE CALL CLOUDS OF WHITE ‘VAPOUR’ FROM THE FLUE TERMINAL During the heating cycle, it is not unusual to see water vapour clouds steaming from the flue terminal, particularly on cold days. This is normal operation of the water heater. PRESSURE RELIEF VALVE DISCHARGING A pressure relief valve is incorporated into the water heater controls. This valve protects the water heater, by allowing water to escape, in the event of excessive pressure build up in the waterways.
INSTALLATION – WATER HEATER THIS WATER HEATER IS FOR INDOOR 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 864 series of water heater may be installed as an in-series gas booster water heater to a solar preheat water heater.
INSTALLATION – WATER HEATER VENTILATION This water heater is to be installed with a Rheem coaxial flue system. The kit enables a room sealed installation, drawing air for combustion from outside of the building. The ventilation of a room or an enclosure such as a cupboard, where the water heater is installed must comply with NZS 5261. SECONDARY FLUE A secondary flue must be installed with an indoor water heater to discharge combustion products to outside the building.
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 55). Model 027 Relief valve setting 1750 kPa Max. mains supply pressure 1000 kPa Min.
INSTALLATION – WATER HEATER HOT WATER DELIVERY This water heater can deliver water at temperatures which can cause scalding. It is necessary and we recommend that a temperature limiting device be fitted between an 864 series water heater and the hot water outlets in any ablution and public areas such as a bathroom, ensuite or public amenities, to reduce the risk of scalding.
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.
INSTALLATION – WATER HEATER CIRCULATED HOT WATER FLOW AND RETURN SYSTEM A Rheem 864 series continuous flow water heater can 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.
INSTALLATION – WATER HEATER from solar storage tank Circulated Hot Water Flow and Return – Gas Booster for Solar Preheater 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 gas booster water heater must be insulated in accordance with the requirements of AS/NZS 3500.4. The insulation must be weatherproof and UV resistant if exposed.
INSTALLATION – WATER HEATER WATER TEMPERATURE DIAGRAMS 55°C 55°C Notes: • Temperature Limiting Devices – refer to “Hot Water Delivery” on page 46.
INSTALLATION – WATER HEATER DIMENSIONS AND TECHNICAL DATA 331 68 Ø104 82 131 17 747 707 672 651 38 54 53 POWER LEAD CONNECTION POWER LEAD CONNECTION 127 GAS CONNECTION 5 HOT WATER OUTLET 254 103 91 70 COLD WATER INLET 28 864 027 Model Rated delivery (@ 40°C rise) litres / min 16.
INSTALLATION – WATER HEATER DIMENSIONS – STANDARD CONTROLLERS Kitchen Controller (Standard) Bathroom Controller (Standard) 52
INSTALLATION – WATER HEATER DIMENSIONS – DELUXE CONTROLLERS 120 24 120 120 Deluxe Controller – Cover Closed 120 120 160 U Bath Fill Bath Water Volume 1. 2. P 3. Bath Fill Temp Set Bath Fill Water Volume and Temperature 5. U 7. Bath Fill completed (automatic) BATH FILL BATH FILL Bath Fill Button Press Bath Fill Button (Red light flashes) (Red light on) 4. Open hot tap Press Bath Fill Button (Red light on) 6. Close hot tap Hot Water 1. ON/OFF 2. ACTIVE Light on 3. 4.
INSTALLATION – WATER HEATER TYPICAL INSTALLATION – INDOOR LOCATION 54
CONNECTIONS – PLUMBING CONNECTION SIZES Model 864 027 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 Australian Gas Installations Standard NZS 5261 and local authority requirements.
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. To achieve true mains pressure operation, the cold water line to the water heater should be the same size or bigger than the hot water line from the water heater.
FLUEING SECONDARY FLUE A secondary flue must be installed with an indoor water heater to discharge combustion products to outside the building. The water heater MUST ONLY be installed with certified Rheem coaxial flue components carrying the label opposite. DO NOT use any other type of flue parts. Where more than one water heater is installed, each water heater must be individually flued using certified Rheem coaxial flue components. A common flue system MUST NOT be used.
FLUEING COMPONENTS A complete flue system is comprised from the following components.
FLUEING FLUE TERMINAL LOCATION The flue design, installation and termination point must comply with NZS 5261. As a guide the following requirements extracted from the New Zealand Gas Installations Standard NZS 5261, must be observed for the flue termination. Horizontal Flue Terminal Location • At least 300 mm between the top of the flue terminal and the eaves. • At least 300 mm between the bottom of the flue terminal and the ground, balcony or other surface.
FLUEING FLUE LENGTHS Maximum Flue Length The system will not operate if there is excessive restriction (pressure drop) in the flueing system. The secondary flue between the water heater and the flue terminal must: • not exceed a maximum length of 9.0 m. • have no more than three (3) bends. • be installed with a gradient of 20 mm per metre of horizontal run. Note: Ensure the seam of the inner flue in horizontal runs is at the top of the installation.
FLUEING Condensate Drain Line and Condensate Trap A condensate drain line and Condensate Trap must be installed where a Condensate Drain Section is used. The Condensate Trap is to be incorporated into the condensate drain line. Where the installation requires a condensate drain line and Condensate Trap: 1. 2. Find an appropriate location for condensate trap to be mounted. Install as shown in the diagram.
FLUEING HORIZONTAL FLUE RUNS There are a number of basic installation requirements which must be followed for a flue installation incorporating horizontal flue runs. Failure to observe these precautions can lead to the premature failure of the flue system and / or water heater. • The flue must be installed with the seam of the inner flue toward the top of the installation. • A horizontal section of flue must be installed with a gradient of 20 mm per metre (1 in 50 or 1° fall) of horizontal run.
FLUEING Typical Installation Horizontal Terminal with Multiple Vertical and Horizontal Sections Typical Installation Vertical Flue Typical Installation Vertical Terminal with Vertical and Horizontal Sections 63
FLUEING HORIZONTAL FLUE INSTALLATION Horizontal Flueing – Directly Behind Water Heater This method of flue installation is used where the secondary flue is to penetrate and terminate immediately behind the wall on which the water heater is mounted. Do not plumb the water heater prior to this type of flue installation, as the water heater (if mounted) requires to be removed from the wall prior to the final installation of the flue.
FLUEING Note: Steps 10 to 15 can only be conducted whilst the water heater is off the wall. 10. Connect the Water Heater Flue Adapter (PN 295121) to the water heater flue outlet. Fit the end of the adapter down over the water heater flue outlet as far as it will go. Ensure there is a minimum 35 mm and maximum 42 mm overlap, the rubber seal on the inner flue is well seated and the adapter is fully engaged on the water heater flue outlet. Tighten the ring clamp provided with a screw driver. 11.
FLUEING Horizontal Flueing – Extended Flue Run Notes: • Ensure each flue component is fully engaged and the rubber seal on the inner duct is well seated at each joint. • Each flue component is supplied with screws to connect to the adjacent flue component. The screws are located in a bag taped to the outside of the flue component.
FLUEING 5. Carefully remove the template inserted as the middle pages of this installation instructions booklet. 6. Align the top of the circular template with the mark on the wall. 7. Cut along the middle of the bold circle marked “Cut Line”. It may be convenient to tape the template to the wall. Mark the pilot hole through the centre of the template and scribe around the template onto the wall. The scribed circle should be 150 mm in diameter. 8. Remove but DO NOT DISCARD the template.
FLUEING 16. A horizontal run of flue between two bends, where the bend closest to the flue terminal is orientated upward, must have a gradient upward in the direction of the flue terminal. 17. The Adjustable Straight Length (PN 295127) may be required if a special length is required between offsets or changes in direction of the flue or to ensure the outer skin of the Horizontal Flue Terminal extends a minimum of 75 mm from the face of the external wall.
FLUEING VERTICAL FLUE INSTALLATION Suitable flashing (not supplied) is required to waterproof the roof penetration. Notes: • Ensure each flue component is fully engaged and the rubber seal on the inner duct is well seated at each joint. • Each flue component is supplied with screws to connect to the adjacent flue component. The screws are located in a bag taped to the outside of the flue component.
FLUEING 6. Horizontal flue runs between bends must have a minimum upward gradient towards the flue terminal of 20 mm per metre. Note: Ensure that the seam of the inner flue in horizontal runs is towards the top of the installation. 7. Secure each flue component using the sheet metal screws provided. 8. Fix a Wall Bracket after each transition to a vertical run. This is to prevent vertical loading on the bends and offsets. 9.
FLUEING 14. Apply an adequate bead of sealant around the flue assembly and flashing and around the flashing and roof material, using a general purpose silicone sealant suitable for outdoor application. Failure to properly seal the flue penetration through the roof will result in long term damage due to weather conditions. 15.
FLUEING MULTIPLE WATER HEATER FLUE INSTALLATION Where multiple water heaters are installed, each water heater must be individually flued to the outside. A common flue system MUST NOT be used. For a multiple unit installation, the water heater is certified for installation with zero clearance between adjacent water heaters. Refer to “Flue Terminal Location” on page 59 for flue terminal clearances from other objects in accordance with NZS 5261.
FLUEING MULTIPLE WATER HEATER CONDENSATE DRAIN LINE AND CONDENSATE TRAP INSTALLATION Where multiple water heaters are installed and each flue has a Condensate Drain Section fitted, it is necessary to install a condensate drain line for each Condensate Drain Section. The drain lines from the Condensate Drain Sections must be run separately to their own individual Condensate Trap.
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 (864 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.
EZ-LINK SYSTEM DUAL INSTALLATION The EZ-Link™ system is designed to electronically control two continuous flow gas water heaters and have them operate as one. One or both water heaters may be in operation, depending upon the hot water demand. 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 864 series 027 model continuous flow gas water heaters.
EZ-LINK SYSTEM DUAL INSTALLATION DUAL INSTALLATION 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 of this model water heater with an exemption from the 300 mm minimum clearance requirements between flue terminals, as stated in NZS 5261, clause 2.6.13.1 (d). Install two continuous flow water heaters of the same model in a parallel plumbing arrangement.
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 78. To connect the Ez-Link cable to the water heaters: 1. Close any hot taps and ensure the burners on both water heaters are not operating. 2. Switch off the electrical supply at the power outlet to each water heater. 3. Remove the screws holding the front panel to the jacket on each water heater. 4.
EZ-LINK SYSTEM DUAL INSTALLATION SECURE CABLE WITH CABLE CLAMP AND SCREW DIP1 ON 1 2 3 4 1 2 3 4 OFF ON DIP SWITCH 4 OF DIP1 SET OF DIP SWITCHES IN THE ON (UP) POSITION EZ-LINK CABLE PLUG IN EZY-LINK CABLE INTO CONNECTOR Control Board with Ez-Link Connection no minimum distance requirement 350 Temperature Controller (installed indoors) in use priority °C x10 check hot water temperature before use water volume on off Weatherproof GPO x 2 K Controller Cable Ez-Link Cable COLD WAT
INSTALLATION – CONTROLLERS CONTROLLERS The Rheem 864 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. Standard Controllers There are three types of standard controller.
INSTALLATION – CONTROLLERS Location – The controllers must be installed in dry, shaded and clean locations. Do not install the controllers: • Near a heat source, such as a cook top, stove or oven. Heat, steam and smoke will interfere with the electronic components of the controllers. • In direct sunlight. • In or near a wet area. The controllers are not waterproof. Water may damage the controllers. • Outdoors. The controllers are not weatherproof.
INSTALLATION – CONTROLLERS Wiring installation: 1. Penetrate the wall with a 30-35 mm hole at the controller location. 2. Install the Kitchen controller cable between the location of the controller and the water heater. 3. Remove the base plate from the controller. 4. Draw the cable through the central hole in the base plate. 5. Fix the base plate to the wall using suitable screws and wall anchors. Ensure the projections in the base plate are pointing upwards. 6.
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.
INSTALLATION – CONTROLLERS BATHROOM1 AND BATHROOM2 CONTROLLERS If only one Bathroom controller is to be installed, the standard Bathroom1 Controller (Rheem PN 299851) or the Bathroom1 Deluxe controller (Rheem PN 299859) must be used.
INSTALLATION – CONTROLLERS Wiring installation: 1. Penetrate the wall with a 30-35 mm hole at the controller location. 2. Install the supplied cable between the location of the controller and the water heater. 3. Remove the base plate from the controller. 4. Peel off one side of the adhesive paper from the foam packing and adhere to the back face of the base plate. This is the side without the projections. 5. Peel off the remaining adhesive paper from the foam packing. 6.
INSTALLATION – CONTROLLERS CONNECTING THE CONTROLLER(S) TO THE WATER HEATER To connect the controller(s) to the water heater: 1. Ensure the electrical supply to the water heater is switched off. 2. Unscrew and gently remove the electrical cover from the underside of the water heater. 3. Draw the cable(s) through the electrical cover. 4. Connect a cable lug from each cable to each of the remote controller terminals. Each cable has two cable lugs.
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. Air will be forced out of the taps. • Close each tap as water flows freely from it. • Check the pipe work for leaks. • Open the gas isolation valve fully.
COMMISSIONING Gas Inlet Test Point Pressure To check the gas inlet pressure: 1. Close any hot taps and ensure the burners are not operating. 2. Close the gas isolation valve at the gas inlet to the water heater. 3. Locate the gas inlet test point on the gas connection to the water heater. 4. 5. Remove the test point screw and washer from the test point orifice. Connect the manometer. Open the gas isolation valve fully at the gas inlet to the water heater.
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. Take care not to touch wiring terminals.
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. Maximum test point gas pressure Refer to the rating label on the water heater for the maximum test point gas pressure.
COMMISSIONING PRESET OUTLET TEMPERATURE SETTING The factory preset outlet temperature setting of the water heater is: • 864 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 864 series Kitchen controller connected 55°C Bathroom controller only connected 50°C It is usually not necessary to check or adjust the factory preset outlet temperature sett
COMMISSIONING TO CHECK OR ADJUST THE PRESET OUTLET TEMPERATURE SETTING The temperature settings will be displayed on the LED display. The preset outlet temperature settings are: • 864 series 38°C, 40°C, 42°C, 43°C, 45°C, 50°C, 55°C, 70°C and 75°C 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.
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.
DRAINING THE WATER HEATER To drain the water heater: • Turn off the water heater (refer to “Turn Off The Water Heater” on page 92). • 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. Water will drain from the water heater. • When water stops flowing from the water heater, close the hot tap.
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RHEEM ELECTRONIC CONTINUOUS FLOW GAS WATER HEATER WARRANTY WARRANTY CONDITIONS Centre’s premises and the installed site shall be the owner’s responsibility. 5. Where the water heater is installed in a position that does not allow safe, ready access, the cost of accessing the site safely, including the cost of additional materials handling and / or safety equipment, shall be the owner’s responsibility. 6.
RHEEM ELECTRONIC CONTINUOUS FLOW GAS WATER HEATER WARRANTY (NEW ZEALAND ONLY) WARRANTY Rheem* will: a) Repair or, if necessary replace any Rheem water heater; or b) Replace any component (or, if necessary, arrange the installation of a new water heater), which fails within the Warranty Periods specified below, subject to the warranty conditions and exclusions.
