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Rheem 621265, Installation And Owner'S Instructions, Page: 1 / 48

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Rheem 621265 Installation And Owner'S Instructions Download Page 1

This water heater must be installed and serviced by an authorised person. 

Please leave this guide with a responsible officer. 

Owners Guide 

and 

Installation Instructions 

 

Gas Heavy Duty 

Water Heater 

265 Litre and 275 Litre Models 

 

Summary of Contents for 621265

Page 1: ...ater must be installed and serviced by an authorised person Please leave this guide with a responsible officer Owners Guide and Installation Instructions Gas Heavy Duty Water Heater 265 Litre and 275...

Page 2: ...a Compliance Certificate showing that the work complies with all the relevant standards Only a licensed person will have insurance protecting their workmanship for 6 years Make sure you use a licensed...

Page 3: ...but may be of interest How Your Water Heater Works 8 Regular Care 9 Save A Service Call 11 Installation 15 Connections Plumbing 25 Connections Electrical 28 Multiple Installations 32 Commissioning 37...

Page 4: ...scalding Check the water temperature before use such as when entering a shower or filling a bath or basin to ensure it is suitable for the application and will not cause scald injury We recommend and...

Page 5: ...s and stain removers near the water heater whilst it is working Do not store swimming pool chemicals household cleaners etc near the water heater Do not place anything on top of the water heater or in...

Page 6: ...lose the isolation valves on the cold and hot water branches to shut down an individual water heater in a bank TO TURN ON THE WATER HEATER Open the isolation valves fully on the cold and hot water bra...

Page 7: ...include the water quality the water pressure the water temperature inlet and outlet and the water usage pattern However your Rheem water heater is supported by a comprehensive warranty refer to page 4...

Page 8: ...ermostat automatically operates the gas control by switching its power on and off so a constant temperature is maintained The thermostat is mounted externally on the water heater and the protective ov...

Page 9: ...the drain line when the lever is lifted then the water heater should be checked by Rheem Service Department or their Accredited Service Agent The temperature pressure relief valve should be checked f...

Page 10: ...s water heater Warning Servicing of a gas water heater should only be carried out by authorised personnel In commercial applications where large volumes of hot water are used sediment may build up on...

Page 11: ...Electronic Thermostat on page 12 Are you using more hot water than you think Are outlets especially the showers using more hot water than you think Very often it is not realised the amount of hot wate...

Page 12: ...n AL fault an attempt should be made to reset the electronic control if the burner is not already alight refer to Water Heater Not Operating on page 12 All other fault conditions should be attended to...

Page 13: ...may indicate the mains water pressure sometimes rises above the designed pressure of the water heater Ask your installing plumber to fit a pressure limiting valve NEVER replace the relief valve with o...

Page 14: ...Pressure Relief Valve Running on page 13 Are outlets especially the showers using more hot water than you think Refer to Not Enough Hot Water on page 11 Is there a leaking hot water pipe dripping hot...

Page 15: ...of a ladder or scaffold Make sure the temperature pressure relief valve lever is accessible and the front covers or panels thermostats and burner can be removed for service You must be able to read th...

Page 16: ...cupboards timber or any other combustibles and at least 500 mm clear of curtains and furnishings The water heater is to be installed at ground or floor level and must stand vertically upright There a...

Page 17: ...cause problems in high wind areas A secondary flue is not required For outdoor models the following distances should be observed At least 500mm between the top of the water heater and the eaves At lea...

Page 18: ...e be fitted between the water heater and the hot water outlets in any ablution and public areas such as bathrooms ensuites or public amenities to reduce the risk of scalding The installing plumber may...

Page 19: ...ater system 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 o...

Page 20: ...accordance with the requirements of AS NZS 3500 4 The insulation must be weatherproof and UV resistant if exposed Keep temperature settings down Lower temperatures reduce heat losses and prolong cyli...

Page 21: ...to the water heater jacket we recommend the use of self drilling screws with a maximum length of 12 mm Should pre drilling be required extreme caution must be observed when penetrating the jacket of...

Page 22: ...INSTALLATION 22 TYPICAL INSTALLATION OUTDOOR LOCATION 631 275 model shown...

Page 23: ...INSTALLATION 23 TYPICAL INSTALLATION INDOOR LOCATION 621 275 model shown...

Page 24: ...320 M 125 200 P 420 320 Weight empty kg 129 136 180 190 Gas Details Hourly Gas Consumption MJ Min Gas Pressure kPa Test Point Gas Pressure kPa 265 275 265 275 265 275 Natural SNG typical 110 100 200...

Page 25: ...er All olive compression fittings must use brass or copper olives Use thread sealing tape or approved thread sealant on all fittings An isolation valve and non return valve must be installed on the co...

Page 26: ...essful the system enters the re ignition attempt lockout mode The LED on the control module has a series of flashes to indicate this mode refer to label on the access cover The electrical supply to th...

Page 27: ...and 150 mm For multiple installations the drain line from each water heater can discharge into a common tundish refer to Multiple Installations on pages 32 and 33 Warning As the function of the tempe...

Page 28: ...conduit is required for the electrical cable to the water heater The conduit is to be connected to the unit with a 20 mm terminator Ensure there are no excess wire loops inside the front cover The wa...

Page 29: ...if the power flue is not working The principle of operation for multiple gas water heater control with a power flue is the same as for a single water heater Any water heater can switch on the fan and...

Page 30: ...l 4 T1 to be set for 20 30 seconds 5 Meets requirements of Clause H 2 2 6 of AS5601 2004 providing lockout in the event of flue product flow failure 6 Where intermittent fan operation is utilised it i...

Page 31: ...ol circuit must be from the same circuit 2 R1 monitors return signal 3 R2 monitors alarm signal 4 T1 to be set for 20 30 seconds 5 Use SPO with round earth terminal Water heater supply cord must be ch...

Page 32: ...ts of both AS NZS 3500 4 and the application 5 A non return valve isolation valve and if required a pressure limiting valve and expansion control valve must be installed on the cold water line to the...

Page 33: ...MULTIPLE INSTALLATIONS 33 Single Bank of Water Heaters Multiple Banks of Water Heaters TPR Valve Drain Line Common Discharge Point Back to Back Manifold Angle Manifold In Line Manifold...

Page 34: ...MULTIPLE INSTALLATIONS 34 LEGEND TYPICAL INSTALLATION RHEEM HEAVY DUTY GAS WATER HEATERS...

Page 35: ...mm 2 A minimum of 900 mm E F should be left in front of the water heater for access servicing and water heater removal Installation Layout Minimum Dimensions Model A B C D E F 621 265 860 610 300 100...

Page 36: ...MULTIPLE INSTALLATIONS 36 MANIFOLD ARRANGEMENT Hot Manifold Assembly Cold Manifold Assembly...

Page 37: ...ine to the water heater s 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 Check the gas pipe work for l...

Page 38: ...gas supply pressure is available to the water heater when other gas burning appliances on the same gas supply are operating TO TURN OFF THE WATER HEATER If it is necessary to turn off the water heater...

Page 39: ...o Diagnostic Features Of Hot Surface Ignition Control on page 40 A viewing window is provided to check burner operation on the water heater LIGHTING PROCEDURE The water heater incorporates an automati...

Page 40: ...ach group of flashes Flashes Fault 1 Re ignition attempt lockout 2 631 275 models only Pressure switch not open 3 631 275 models only Pressure switch not closed 4 Faulty igniter igniter sensing circui...

Page 41: ...d of operation Removal of the front cover on the 631 275 model whilst burner is operating will lead to re ignition lockout refer to Diagnostic Features of Hot Surface Ignition Control on page 40 BURNE...

Page 42: ...alve release lever do not let the lever snap back or you will damage the valve seat Operating the lever will release the pressure in the water heater Attach a hose to the water heater drain cock Let t...

Page 43: ...lating pump All valves and associated equipment must be suitable for safe operation up to the maximum thermal discharge temperature of the temperature pressure relief valve i e 99 C Where water is req...

Page 44: ...wn button and the up button simultaneously for ten 10 seconds C0 offset program will be displayed Release the buttons 5 Press and hold the down button and the up button simultaneously again The curren...

Page 45: ...45 This page is intentionally blank...

Page 46: ...ter heater has not been used for two or more weeks the following procedure should be carried out before using any electrical appliances automatic washing machines and dishwashers which are connected t...

Page 47: ...with the water heater where the complaint is related to excessive discharge from the temperature and or pressure relief valve due to high water pressure where there is no flow of hot water due to fau...

Page 48: ...talled in any other than a single family domestic dwelling with a thermostat setting below 76 C Stellar Optima Heavy Duty Years 2 to 5 New water heater free of charge with installation and labour cost...

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