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Rheem Multipak MPE02, Owner'S Manual And Installation Instructions

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Rheem Multipak MPE02 Owner'S Manual And Installation Instructions Download Page 56

COMMISSIONING 

56 

MULTIPAK – OPTIONAL CIRCULATING PUMP SUCTION STRAINER CLEANING 

1. 

Turn Off the power supply to the circulating pump. Isolate the pump upstream valve.  

2. 

Remove the pump upstream strainer assembly. Clean and refit.  

3. 

Re-instate the pump upstream valves to open position. 

4. 

Follow the secondary pump commissioning start-up instructions 7, 8 and 9 as stated before. 

5. 

Re-instate the pump power supply.  

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 
 
 

Basic Instruction for inline wet rotor Circulating Pump;  

Motor shaft  shall be Horizontal. Never operate dry. Loop cable down on exiting 

terminal box as shown. Bleed pump; Confirm rotation. Free shaft assembly, if 

necessary; Power supply timer is required to turn off pump automatically at least 

four (4) times daily for 5 minutes; Clean pump suction strainer regularly. 

 

Pump Upstream 

Isolation Valve 

Check Valve 

Strainer 

Summary of Contents for Multipak MPE02

Page 1: ...ble 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 continue...

Page 2: ...l types are sold in New Zealand References to propane gas models do not apply to the New Zealand market An electronic copy of these Owner s Guide and Installation Instructions can be downloaded from rheem com au and rheem co nz Rheem Australia Pty Ltd and Rheem New Zealand Limited are the suppliers of the Rheem range of continuous flow gas water heaters manufactured in Japan by Paloma Co Ltd a wor...

Page 3: ...on pages 4 to 6 The other pages are intended for the installer but may be of interest Contents 3 Rheem Continuous Flow Gas Water Heater Warranty Australia Only 4 Safety and Warnings 7 About your water heater 9 Water Supplies 15 Save A Service Call 16 Multipak Technical Specifications 18 Installation Water Heater 20 Connections Plumbing 24 Flueing 25 Connections Electrical 43 Commissioning 46 ...

Page 4: ...wish to have the relevant component repaired or replaced by Rheem that service will be at your cost 2 3 Where a failed component or cylinder is replaced under this warranty the balance of the original warranty period will remain effective The replacement does not carry a new Rheem warranty 2 4 Where the water heater is installed outside the boundaries of a metropolitan area as defined by Rheem or ...

Page 5: ...extent that the goods are acquired for the purpose of resupply in trade consumption in the course of a process of production or manufacture or repairing or treating in trade other goods or fixtures on land 3 WHAT IS COVERED BY THE RHEEM WARRANTY FOR THE WATER HEATERS DETAILED IN THIS DOCUMENT 3 1 Rheem will repair or replace a faulty component of your water heater if it fails to operate in accorda...

Page 6: ...of a claim under this warranty will be borne by you 6 THE AUSTRALIAN CONSUMER LAW 6 1 In Australia our goods come with guarantees that cannot be excluded under the Australian Consumer Law You are entitled to a replacement or refund for a major failure and for compensation for any other reasonably foreseeable loss or damage You are also entitled to have the goods repaired or replaced if the goods f...

Page 7: ...t in accordance with these instructions 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 because water at a temperature much higher than the controller setting can be delivered If a solar water heater is installed to an existing water heater installation then all controllers must be disconnect...

Page 8: ...e set A braided flexible hose or semi flexible connector may be used for connection to the water heater where permitted by AS NZS 3500 4 in compliance with the Gas Installations Standard AS NZS 5601 1 in compliance with all local codes and regulatory authority requirements in New Zealand also conforming to Clauses G11 G12 and H1 of the New Zealand Building Code Installation and commissioning requi...

Page 9: ...ion e Co axial flueing for individual internal water heaters 2 240V 1Ph 50Hz 10A GPO power supply to each of the water heaters optional circulating pump Power supply timer is required to turn off pump automatically at least four 4 times daily for five 5 minutes minimum 3 Final commissioning as per the simple instructions provided MULTIPAK MODELS AVAILABLE TECHNICAL SPECIFICATIONS Multipak Model MP...

Page 10: ...e setting of this water heater cannot be adjusted by the householder The setting can only be adjusted by the installer Rheem Service or their nearest Accredited Service Agent Note AS 3498 requires that a water heater provides the means to inhibit the growth of Legionella bacteria in potable water When this water heater is used as an in series booster for a solar water heater it can satisfy this AS...

Page 11: ...let Take care not to touch the power plug with wet hands SAFETY This water heater is supplied with temperature sensors a FlameSafe protection system and a pressure relief valve These devices must not be tampered with or removed The water heater must not be operated unless each of these devices is fitted and is in working order If the power supply cord or plug is damaged it must be replaced by a qu...

Page 12: ...the water heater Plant growth across the air let and flue terminal can interfere with the performance of the water heater Inspect around the water heater for insect infestations such as ants Spray insecticide around the water heater if necessary to rid the area of insects Do not spray the surface or into the air inlet or flue terminal of the water heater Insects encroaching into or nesting in the ...

Page 13: ...itions occurring refer to note below Close the gas isolation valve at the inlet to the water heater Close the cold water isolation valve at the inlet to the water heater Close the hot water return isolation valve Note If there is a risk of freezing conditions the electrical supply to the water heater should not be switched off unless the water heater is drained otherwise damage could result refer ...

Page 14: ... continuous flow water heater Water will drain from the water heaters When water stops flowing from the water heaters close the pressure relief valve Note It is recommended not to screw the drain plugs back in until the water heater is to be turned on again HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY Installation requirements are shown on pages 20 to 23 The water heater must be instal...

Page 15: ...ainwater tank supply bore water supply desalinated water supply public reticulated water supply or water brought in from another supply then water chemistry information 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 ...

Page 16: ...ps This can also be evident if the water heater has been installed as an in series gas booster to a solar water heater and the solar heated water is at a low temperature FAN CONTINUES TO RUN AFTER WATER HEATER OPERATION STOPS It is the normal operation of the water heater for the fan to continue running after heating of the water is finished The fan may run for up to six minutes after the burners ...

Page 17: ...er 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 their nearest Accredited Service Agent to arrange for inspection...

Page 18: ...ns are fully assembled and all mounted on a Galvabond Steel frame Package is ready for site installation Connection points provided to the package are Cold Water Inlet Hot Water Outlet and Optional Hot water Return Natural Gas Standard or LPG Optional Inlet UNIQUE FEATURES Staged operation of CFWH Capital and operating cost savings Smaller space requirements STAGING VALVE A staging valve is provid...

Page 19: ...re setting with this option to prevent proliferation of Legionella Bacteria 2 Return piping sizing shall be sized in accordance to AS3500 4 3 No pressure limiting and other such pipe friction devices shall be installed in this return piping 4 If such devices are installed return water flow will be restricted and pump will starve of water resulting in premature failure of the pump and is not covere...

Page 20: ... system owner about their needs and building backup redundancy into the hot water supply system 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 heater it can satisfy this AS 3498 requirement provided it is energised and the booster preset outlet temper...

Page 21: ...e nearest discharge point of the flue terminal to the opening may be deemed to comply Check with the local regulator Note Two or more of this model CFWH can be installed side by side with minimal clearance between them The AGA has approved the installation of two or more of this model CFWH with an exemption from the 300 mm minimum clearance requirements between flue terminals as stated in AS NZS 5...

Page 22: ... Refer to the Owner s Guide and Installation Instructions supplied with the solar water heater for maximum mains supply pressure details This water heater is not suitable for connection to bore water or spring water unless a water treatment device is fitted Refer to Water Supplies on page 15 for further information on water chemistry PRESET OUTLET TEMPERATURE SETTING The factory preset outlet temp...

Page 23: ...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 If circulated tempered water were to be returned back to the water heater depending on the location of the return line co...

Page 24: ...er line to the water heater should be the same size or bigger than the hot water line from the water heater IN SERIES BOOSTER The pipe work between the solar storage tank if one is installed and the in series gas booster MUST BE of copper and be fully insulated with a closed cell type insulation or equivalent in accordance with the requirements of AS NZS 3500 4 The insulation must be weatherproof ...

Page 25: ...s 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 mu...

Page 26: ...te trap assy PN AS33121006 One per system required condensate tube assy PN AS33121007 One per heater required 90 elbow PN 295147 45 elbow PN 295148 straight length 300 mm PN 295152 wall bracket PN 295129 male to male MM adapter PN 295151 female to female FF adapter PN 295150 adjustable straight length 560 to 890 mm PN 295153 straight length 900 mm PN 295149 Flue Outlet ...

Page 27: ... and 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 c...

Page 28: ... heater Refer to Figure 18 Condensate Trap and Condensate Drain Line on page 30 DRAINING THE CONDENSATE The connection to the condensate manifold assembly must be made under the following conditions in order to prevent condensate from draining back into the water heater Where vertical sections exceeding 2 m are incorporated in a horizontally terminating flue system Where the flue terminates vertic...

Page 29: ...he tee fitting provided with a condensate tube kit to connect two polyethylene tubes together The unused connection on the tee fitting should point upwards c Use the tee fitting provided with a condensate tube kit as the rightmost fitting The unused connections on the tee should point vertically 9 Connect the condensate trap assembly to the rightmost tee fitting connection facing downwards refer F...

Page 30: ...te trap may be cut to aid in directing the discharge point Notes AS NZS 3500 4 is used as a guide in preparing 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 drain line must not discharge onto electrical connections earth stakes copper pi...

Page 31: ... the condensate manifold must be made where the horizontal flue is installed with an upward gradient Refer to Draining the Condensate on page 28 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 Thi...

Page 32: ...n Horizontal Terminal with Multiple Vertical and Horizontal Sections Figure 21 Typical Installation Through the Roof Flueing with Vertical Sections Figure 22 Typical Installation Vertical Terminal with Vertical and Horizontal Sections ...

Page 33: ... with the upper mounting bracket holes on the water heater It may be convenient to tape the template to the wall Note Ensure there are 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 repeat for each water heater 4 Drill a pilot hole using a 6 5 mm ...

Page 34: ...Bracket adjustment of up to 30 mm can be made and may assist with flue fitment and alignment 14 Check the end of the outer skin of the flue terminal extends a minimum of 75 mm from the face of the external wall 15 Apply an adequate bead of sealant around the flue assembly and exterior wall of the building using a general purpose silicone sealant suitable for outdoor application Failure to properly...

Page 35: ...ding If the 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 Elbow and Measure the horizontal distance from the wall behind the water heater to the centre of the 90 Elbow and Then where the flue is expected to penetrate the wall mark the vertical distance up from the floor a...

Page 36: ... the inner duct 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 ...

Page 37: ...tdoor application Failure to properly seal the flue penetration through the wall will result in long term damage due to weather conditions 20 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 fl...

Page 38: ...sate drain spigot on the water heater flue outlet to the condensate manifold assembly Refer to Draining the Condensate on page 28 and to Figure 18 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 max...

Page 39: ...ing suitable fasteners fix to the roof material The flue must extend a minimum of 150 mm through the roof flashing 13 Connect the 90 degree Elbow 295147 and Horizontal Terminal 295146 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 w...

Page 40: ...lation to flue terminal clearances to be taken into account The distances are based on using the coaxial flue system components Note All flues for multiple water heaters MUST terminate horizontally Flueing through the Wall 1 The minimum horizontal centre to centre distance between flue terminals is to be no less than 360 mm 2 The minimum vertical centre to centre distance between flue terminals is...

Page 41: ...t is not caught on any CFWH exterior surfaces 7 Fit the end of the short silicone tube to the spigot of the water heater flue outlet 8 Cut the polyethylene tube included in the condensate tube kit to 348mm 9 Connect plastic tubes and plastic fittings to create a plastic tube manifold Use a 90 elbow on the leftmost fitting provided with the condensate trap kit Use the tee fitting provided with a co...

Page 42: ...wing 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 onto electric...

Page 43: ...ll only operate on a sine wave at 50 Hz Devices generating a square wave cannot be used to supply power to the water heater Power supply Electrician to fit 240V 1Ph 50Hz general purpose outlet power supply to each CFWH and optional pump Maximum 10 Amp current draw Multipak R The optional pump fitted with Multipak R systems must be controlled by a thermostat or timer to shut off the power supply to...

Page 44: ...44 MULTIPAK INTERNAL MPI02 MPI06 GENERAL ARRANGEMENT ...

Page 45: ...45 MULTIPAK EXTERNAL MPE02 MPE06 GENERAL ARRANGEMENT ...

Page 46: ... on page 46 the minimum test point pressure and the maximum test point pressure refer to Burner Gas Pressure on page 48 Warning Upon completion of the installation and commissioning of the water heater leave this guide with a responsible officer DO NOT leave this guide inside of the cover of the water heater as it may interfere with the safe operation of the water heater or ignite when the water h...

Page 47: ...d ensure all the CFWH are on and the burners are fully ignited Note If the Multipak is using 872627 or 862627 model CFWH and is installed as an in series gas booster for a solar water heater then the temperature of the water entering the Multipak must be at least 2 C below the water heater preset outlet temperature setting Otherwise the gas burners will not ignite and the test point gas pressures ...

Page 48: ...t hot taps fully and ensure all the CFWH are on and the burners are fully ignited 8 Press and hold down the MIN button and observe the reading on the manometer 1L is shown on the LED display 9 Release the MIN button If the manometer reading observed in step 7 agrees with the rating label no further adjustment is required 10 To adjust press and hold the adjuster button LH is shown on the LED displa...

Page 49: ...nd the incoming cold water temperature Note In Step 7 3H 027 models will be shown on the LED display After setting the minimum and maximum test point gas pressures Close the outlet isolation valve Remove the manometer and refit and tighten the test point screw and washer Open the isolation valve again so the burners ignite Test for gas leaks Refit the front panel and screws to the water heater CLE...

Page 50: ...ugh a circulated hot water 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 GAS BOOSTER FOR A 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 ...

Page 51: ...al supply at the power outlet to the water heater 5 Switch dip switches 3 and 4 to the on up position on the DIP 1 set of DIP switches on the I C Board The current preset outlet temperature setting will show on the LED display If the temperature displayed on the LED display is the desired preset outlet temperature setting then proceed to step 7 as no further adjustment is necessary 6 Press the MAX...

Page 52: ...le at the water heater Damage caused by freezing due to the unavailability of power at the water heater is not covered by the Rheem warranty refer to Terms of the Rheem Warranty on page 4 If the power has been switched off to the water heater and there is a risk of freezing then it is necessary to drain the water heater refer to Draining the Water Heater on page 52 DRAINING THE WATER HEATER To dra...

Page 53: ... staged sequence correctly Note All CFWH Units have been factory temperature pre set and gas pressures adjusted 5 Check gas pressure at the most disadvantaged CFWH during maximum demand during all CFWH operation to ensure adequate pressure is available Refer to Gas Inlet Pressure on page 46 for further details FINAL CHECKS 1 Check system for any leaks Gas and Water 2 Turn system 240VAC power OFF I...

Page 54: ...ropane 2 75 Minimum Up to 3 5 kPa Inlet Water Pressure Inlet Water Pressure Minimum 140 kPa up to 800 kPa Valves All the Valves are in Open Position Staging Valve Position Refer to Page 18 for details Circulation Pump optional Venting Operation Pump Speed Factory Pre set to No 3 System Flow Return System or Dead Leg System Flow Return System requires Circulation pump All Water Heater Operations Sy...

Page 55: ...ult Refer to Rheem Owner s Guide and Installation Instructions for additional Information Long delay for Hot water Supply Optional Pump Fault Check pump operation if fitted as per commissioning list item 8 Page 46 of this manual Check Pump installation has been completed in accordance to technical notes on page 18 of this manual MULTIPAK CFWH STRAINER CLEANING 1 Isolate the CFWH cold and hot water...

Page 56: ... commissioning start up instructions 7 8 and 9 as stated before 5 Re instate the pump power supply Basic Instruction for inline wet rotor Circulating Pump Motor shaft shall be Horizontal Never operate dry Loop cable down on exiting terminal box as shown Bleed pump Confirm rotation Free shaft assembly if necessary Power supply timer is required to turn off pump automatically at least four 4 times d...

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Page 60: ...60 RHEEM AUSTRALIA PTY LTD A B N 21 098 823 511 www rheem com au FOR SERVICE TELEPHONE 131 031 AUSTRALIA 0800 657 335 NEW ZEALAND AQ0901140 A August 2021 REV A EPCR 210806 ...

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