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Rheem 627 series, Owner'S Manual And Installation Instructions, Page: 1 / 56

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

Please leave this guide with a responsible officer. 

Owner’s Guide 

and 

Installation Instructions 

 

 

Continuous Flow 

Gas Indoor Water Heater 

862 series 

627 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. 

 

OPERATOR: 

DO NOT OPERATE THIS WATER HEATER: 

 

Unless a certified Rheem coaxial flue system, venting to the outside through a certified Rheem 
terminal, is installed in accordance with the Installation Instructions. 

 

If a loud continued vibration occurs during operation 

 

 

 

Summary of Contents for 627 series

Page 1: ...NLY 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 OPERATOR DO NOT OPERATE THIS WATER HEATER Unless a certified Rheem coaxial flue system venting to the outside through a certified Rheem terminal is installed in accordance with the Installation Instructions If a loud...

Page 2: ...f Rheem Australia Pty Ltd Trademark of Rheem Australia Pty Ltd Note Every care has been taken to ensure accuracy in preparation of this publication No liability can be accepted for any consequences which may arise as a result of its application Warning Upon completion of the installation and commissioning of the water heater leave this guide with the householder or a responsible officer DO NOT lea...

Page 3: ...ntended for the installer but may be of interest About Your Water Heater 4 Water Supplies 11 Save A Service Call 12 Installation Water Heater 15 Connections Plumbing 24 Flueing 26 Connections Electrical 43 Multiple Installations 44 Commissioning 47 Draining The Water Heater 54 Warranty 55 ...

Page 4: ... HEATER The 862 series water heater may be installed as an in series gas booster to a solar water heater For information relating to the function and operation of the solar water heater refer to the Owner s Guide and Installation Instructions supplied with the solar water heater Water stored in the solar storage tank passes through the in series gas booster when a hot tap is opened Solar heated wa...

Page 5: ...nd that a remote temperature controller is not used Warning Temperature controllers must not be fitted to this water heater 862 series if it is installed as an in series gas booster with 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 If a solar or Water Star water heater has been insta...

Page 6: ...ed with a genuine replacement part available from Rheem Phone Rheem Service or their nearest Accredited Service Agent to arrange for an inspection 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 tamper...

Page 7: ...he water level is low then a trap must be refilled To check and or refill a trap with water remove the clamp securing the hose of the condensate trap to the spigot on the flue outlet Remove the hose from the spigot and fill the condensate trap with water Reconnect the hose to the spigot Ensure the hose is not kinked when reconnected Warning Failure to fill a Condensate Trap with water may cause fl...

Page 8: ...ater Heater on page 9 TO TURN ON THE WATER HEATER Screw in the drain plugs at the cold water inlet and hot water outlet of the water heater if the water heater has been drained 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 Open t...

Page 9: ...freezing then it is necessary to drain the water heater refer to Draining the Water Heater on page 9 Pipe work to and from the water heater must be adequately insulated to prevent freezing The water heater is not suitable for installation in areas where the ambient temperature falls below 20 C including wind chill factor Refer to Terms of the Rheem Warranty on page 55 DRAINING THE WATER HEATER Tur...

Page 10: ...ed up to the connections on both the solar storage tank and the in series gas booster VICTORIAN CUSTOMERS Notice to Victorian Customers from the Victorian Plumbing Industry Commission This water heater must be installed by a licensed person as required by the Victorian Building Act 1993 Only a licensed person will give you a Compliance Certificate showing that the work complies with all the releva...

Page 11: ...rmation should be sought from the supplier or it should be tested to ensure the water supply meets the requirements given in these guidelines for the Rheem warranty to apply SATURATION INDEX The saturation index SI is used as a measure of the water s corrosive or scaling properties In a corrosive water supply the water can attack copper parts and cause them to fail Where the saturation index is le...

Page 12: ...mises Try lighting another gas appliance Has the gas line been purged of air after installation Refer to your plumber WATER IS TOO HOT OR NOT HOT ENOUGH Is the preset outlet temperature of the water heater higher than required Does the controller you are using have priority NO WATER FROM THE HOT TAP No flow of water from the hot tap may indicate a restriction in or failure of the cold water supply...

Page 13: ...clean the collector glass Ensure the glass on your solar collectors is free of dust salt spray or any other matter which may reduce the effectiveness of the solar collectors If the collector glass becomes dirty hose down or if the solar collectors are accessible wash the collector glass with water and a soft brush when the solar collectors are cool Collector area is too small For most installation...

Page 14: ...he controller s and switch off the electrical supply to the water heater Check the gas isolation valve at the gas inlet to the water heater is fully open Wait 5 minutes then switch on the electrical supply to the water heater turn on a controller and open a hot tap If the error code persists take note of the numerical code turn off the hot tap and turn off the controller s Phone Rheem Service or t...

Page 15: ...to a solar water heater For information relating to the function and operation of the solar water heater refer to the Owner s Guide and Installation Instructions supplied with the solar water heater Note AS 3498 requires that a water heater provides the means to inhibit the growth of Legionella bacteria in potable water When this water heater is used as an in series booster for a solar water heate...

Page 16: ...601 1 as applicable under local regulations 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 a certified Rheem coaxial flue system Where more than one water heater is installed each water heater must be individually flued using a certified Rheem coaxial flue system A c...

Page 17: ...ING The factory preset outlet temperature setting of the water heater is 862 series 60 C for a single water heater 60 C as part of a Multipak system 70 C as part of a Commpak system It is usually not necessary to check or adjust the factory preset outlet temperature setting of the water heater unless the customer or application has a particular requirement for this to be done For applications requ...

Page 18: ...ting device can be branched off the cold water line either before or after the isolation valve and pressure limiting valve to the water heater If a pressure limiting valve is installed on the cold water line to the water heater and the cold water line to a temperature limiting device branches off before this valve or from another cold water line in the premises then a pressure limiting valve of an...

Page 19: ...ation If a combination isolation valve and non return valve duo or trio valve is installed on the cold water line to an open circuit direct solar water heater and the cold water line to the temperature limiting device branches off after this valve then a second non return valve must be installed between the cold water branch and the solar storage tank Due to the higher water temperatures generated...

Page 20: ...ure Limiting Device A temperature limiting device cannot be installed in circulated hot water flow and return pipe work The tempered water from a temperature limiting device cannot be circulated Where a circulated hot water flow and return system is required in a building a temperature limiting device can only be installed on a dead leg branching off the circulated hot water flow and return pipe I...

Page 21: ... 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 The insulation must be weatherproof and UV resistant if exposed The insulation must be fitted up to the connections on the both the underside of the water heater and the solar stora...

Page 22: ...7166 1 REV_DD 11 12 763 240 131 Ø127 331 130 38 53 119 240 28 107 86 Model 862 627 Rated delivery 40 C rise litres min 16 7 Recovery 25 C rise litres min 27 Mass Empty unpackaged kg 24 Gas Details Hourly Gas Consumption MJ Min Gas Pressure kPa Test Point Gas Pressure kPa Max Gas Pressure kPa minimum maximum Model 627 627 627 627 627 Natural 205 1 13 0 165 0 900 3 50 Propane 205 2 75 0 252 1 550 3 ...

Page 23: ...INSTALLATION WATER HEATER 23 TYPICAL INSTALLATION INDOOR LOCATION ...

Page 24: ... Mains Water Supply on page 17 A disconnection union must always be provided at the cold water inlet and hot water outlet on the water heater to allow for disconnection of the water heater Insulation used on the cold and hot water lines must extend up to the cold water inlet and hot water outlet of the water heater Notes It is essential all pipe connections be correctly aligned otherwise component...

Page 25: ...tant if exposed The insulation must be fitted up to the connections on both the solar storage tank and the in series gas booster A full flow isolation valve must be installed on the water line to the in series gas booster GAS INLET The gas connection is made at the underside of the water heater The pipe work must be cleared of foreign matter before connection and purged before attempting to operat...

Page 26: ...through walls floors or ceilings the penetration must comply with local regulations for fire rating The coaxial flue system does not have nor provides a fire rating The water heater flue may be terminated either horizontally with a Horizontal Flue Terminal or vertically with a Vertical Flue Terminal The secondary flue must be self supporting and not impose a load on the water heater Flue runs must...

Page 27: ...rim ring PN 295125 vertical flue terminal PN 295117 condensate trap PN 295139 90 bend PN 295118 45 bend PN 295119 straight length 300 mm PN 295126 wall bracket PN 295129 male to male MM adapter PN 295124 female to female FF adapter PN 295123 adjustable straight length 560 to 890 mm PN 295127 straight length 900 mm PN 295122 ...

Page 28: ...d a fence wall or other obstruction in the direction of the flue discharge At least 300 mm between the flue terminal and any other flue terminal cowl or other combustion air intake Note If these horizontal distances cannot be achieved AS NZS 5601 1 states an equivalent horizontal distance measured diagonally from the nearest discharge point of the flue terminal to the opening may be deemed to comp...

Page 29: ...llations it will be necessary to remove the clamp and cap and install a Condensate Trap PN 295139 and drain line The Condensate Trap must be filled with water prior to the operation of the water heater Refer to Condensate Trap and Condensate Drain Line on page 30 Draining the Condensate A Condensate Trap and drain line must be installed under the following conditions in order to prevent condensate...

Page 30: ...ne should be as short as possible have a continuous fall all the way from the Condensate Trap to the discharge outlet and have no tap valves or other restrictions in the pipe work The outlet of the drain line must be in such a position that flow can be easily seen but arranged so the condensate will not cause injury damage or nuisance Warning Failure to fill with water may cause flue gasses to esc...

Page 31: ...p and drain line must be installed where the horizontal flue is installed with an upward gradient Refer to Draining the Condensate on page 29 This ensures any condensate formed during operation of the water heater is prevented from draining back into the water heater A horizontal run of flue connecting directly to a Horizontal Flue Terminal must have a gradient downward to the flue terminal This p...

Page 32: ...ING 32 Typical Installation Horizontal Terminal with Multiple Vertical and Horizontal Sections Typical Installation Typical Installation Vertical Flue Vertical Terminal with Vertical and Horizontal Sections ...

Page 33: ... no studs noggins pipes or electrical cables located in the wall where the flue is to penetrate 3 Mark the pilot hole location through the centre of the template Remove but DO NOT DISCARD the template 4 Remove the water heater from the wall Note It is necessary to remove the water heater from the wall to allow the fitting and installation of the flue It is also good practice so no debris from the ...

Page 34: ...l Bracket mounting points Adjust the mounting brackets at the top and bottom of the water heater if required Bracket adjustment of up to 30 mm can be made and may assist with flue fitment and alignment 16 Check the end of the outer skin of the flue terminal extends a minimum of 75 mm from the face of the external wall 17 Apply an adequate bead of sealant around the flue assembly and exterior wall ...

Page 35: ...he flue is not to have a change of direction from horizontal to vertical then to accurately mark this position Measure the vertical distance from the floor to the top of the 90 Bend and Measure the horizontal distance from the wall behind the water heater to the centre of the 90 Bend and Then where the flue is expected to penetrate the wall mark the vertical distance up from the floor and the hori...

Page 36: ...is well seated at each joint 11 Secure each flue component using the sheet metal screws provided 12 Support horizontal sections at a distance no greater than 2 m using a Wall Bracket PN 295129 13 A horizontal run of flue connecting directly to a Horizontal Flue Terminal must have a downward gradient to the flue terminal Use Male to Male and Female to Female Adapters to reverse the direction of flu...

Page 37: ...Apply an adequate bead of sealant on the rear face of a Trim Ring using a general purpose silicone sealant suitable for outdoor application Fit the Trim Ring over the flue terminal and press against the wall 21 Apply an adequate bead of sealant around the flue assembly and interior wall of the building and on the rear face of the Trim Ring using a general purpose silicone sealant suitable for indo...

Page 38: ...er heater flue outlet Install a condensate drain line to the Condensate Trap Refer to Draining the Condensate on page 29 and to Condensate Trap and Condensate Drain Line on page 30 4 Connect the first flue component to the water heater flue outlet Fit the end of the flue component 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 ...

Page 39: ...fasteners fix to the roof material The flue must extend a minimum of 150 mm through the roof flashing 13 Connect the Vertical Terminal PN 295117 to the flue exiting the roof Secure the joint with sheet metal screws provided The top of the Vertical Terminal should not be less than 450 mm above the flashing below Observe flue terminal clearances in accordance with AS 5601 or AS NZS 5601 1 Refer also...

Page 40: ... Trap and Condensate Drain Line Installation on page 41 Refer to Flue Terminal Location on page 28 for flue terminal clearances from other objects in accordance with AS 5601 or AS NZS 5601 1 Follow the relevant instructions pertaining to the type of flue installation with the following additional requirements in relation to flue terminal clearances to be taken into account The distances are based ...

Page 41: ...on each water heater flue outlet assembly 2 Locate and install the Condensate Trap in a suitable position adjacent to the water heater Refer to steps 2 to 4 of the procedure outlined in Condensate Trap and Condensate Drain Line on page 30 If the drain line from each Condensate Trap is to be run separately to a discharge point then proceed to step 4 otherwise continue with step 3 3 Manifold the dra...

Page 42: ...g the following drainage recommendations As the condensate is mildly acidic copper tube and fittings must not be used as they will corrode Use UPVC Unplasticised Polyvinyl Chloride or PE polyethylene piping The outlet of the drain line must be in such a position that flow can be easily seen but arranged so that discharge will not cause injury damage or nuisance The drain line must not discharge on...

Page 43: ...r Star water heater has been installed to an existing water heater installation then all controllers must be disconnected and removed The water heater is supplied with a 1 8 metre lead and plug and requires a 240 V 50 Hz general purpose outlet GPO to be located within 1 2 metres of the installation The GPO must be clear of the flue exhaust draining water gas supply pipe and water connections The p...

Page 44: ...f the Standards and the application The recommended branch line size for the cold or solar preheat and hot water and gas pipes is DN20 4 A full flow gate valve or ball valve and if required a pressure limiting valve must be installed on the cold water line to the system A non return valve or stop tap must not be installed Note The gate valve or ball valve and pressure limiting valve are not requir...

Page 45: ... on a flow rate from a shower outlet not exceeding 9 litres per minute and a tempered water temperature of 42 C Climate Chart Number of Shower Outlets 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 number of water heaters warm tropical climate 20 C inlet temperature 1 1 1 2 2 2 3 3 3 3 4 4 4 5 5 5 6 6 6 6 number of water heaters moderate climate 15 C inlet temperature 1 1 2 2 2 3 3 3 4 4 4 5 5...

Page 46: ...maximum number of showers suitable for 1 x water heater in accordance with the climate chart Only the first water heater should be operating If other water heaters are operating adjust their SYR valves by turning the knob anti clockwise until the water heater turns off 7 Second water heater Open the next shower The second water heater should ignite If it fails to ignite adjust the SYR valve by tur...

Page 47: ... adjust the preset outlet temperature setting of the water heater Refer to Preset Outlet Temperature Setting on page 51 The automatic water governor incorporated in the water heater is not adjustable To complete the installation it is necessary to check the gas supply pressure at the inlet to the water heater refer to Gas Inlet Pressure on page 47 the minimum test point pressure and the maximum te...

Page 48: ...off button 7 Open a hot tap fully and ensure the burners are fully ignited It may be necessary to open a second tap 8 Turn on all other gas burning appliances in the house which are on the same gas supply 9 Observe the gas pressure reading on the manometer If the manometer reading is between the minimum and maximum inlet gas pressure ratings on the rating label no adjustment is required If the man...

Page 49: ...ifice Connect the manometer 6 Switch on the electrical supply at the power outlet to the water heater and turn on a controller if one is fitted by pressing the on off button 7 Open the gas isolation valve fully at the gas inlet to the water heater if not already open 8 Open a hot tap slowly until the burners ignite 9 Press and hold down the MIN button and observe the reading on the manometer 1L is...

Page 50: ...7 models will be shown on the LED display After setting the minimum and maximum test point gas pressures Close the hot tap Remove the manometer and refit and tighten the test point screw and washer Open a hot tap again so the burners ignite Test for gas leaks Close the hot tap Turn off the controller if one is fitted by pressing the on off button Switch off the electrical supply at the power outle...

Page 51: ...r flow and return system due to heat loss in the ring main the preset outlet temperature setting of the water heater should be set to at least 65 C Refer to To Check or Adjust the Preset Outlet Temperature Setting on page 52 to check or if required to adjust the preset outlet temperature setting of the water heater Gas Booster for a Solar Water Heater Note AS 3498 requires that a water heater prov...

Page 52: ...rature setting then proceed to step 7 as no further adjustment is necessary 6 Press the MAX button to increase or the MIN button to decrease the preset outlet temperature setting Each press of the MAX or MIN button will increase or decrease the preset temperature by one increment The MAX and MIN buttons are located underneath the DIP 1 and DIP 2 set of DIP switches 862 series The increments are 38...

Page 53: ...e gas isolation valve at the inlet to the water heater Close the cold water isolation valve at the inlet to the water heater Drain the water heater if there is a risk of freezing conditions occurring refer to Draining The Water Heater on page 54 Notes The frost protection system will be rendered inoperable if electrical power is not available at the water heater Damage caused by freezing due to th...

Page 54: ...ly 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 Note It is recommended not to screw the drain plugs back in until the water heater is to be turned on again ...

Page 55: ...responsibility 2 5 Where the water heater is installed in a position that does not allow safe or ready access the cost of that access including the cost of additional materials handling and or safety equipment shall be the owner s responsibility In other words the cost of dismantling or removing cupboards doors or walls and the cost of any special equipment to bring the water heater to floor or gr...

Page 56: ...Be the owner of the water heater or have consent of the owner to act on their behalf b Contact Rheem Service without undue delay after detection of the defect and in any event within the applicable warranty period 4 2 You are not entitled to make a claim under this warranty if your water heater a Does not have its original serial numbers or rating labels b Is not installed in Australia 5 HOW TO MA...

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