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Rheem Gas Domestic Indoor Water Heater, Инструкция по установке и эксплуатации

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CONNECTIONS – ELECTRICAL 

33 

WIRING DIAGRAM TWIN ELEMENT ELECTRIC WATER HEATERS 
NON-SIMULTANEOUS OPERATION OFF-PEAK CONNECTION 

 
 

 

 

Electrical Circuit for Twin Element Models – Robertshaw “ST” Thermostats 

 
The  active  from  the  continuous  supply  must  be  connected  to  the  top  heating 
unit circuit and the active from the Off-Peak or time controlled supply must be 
connected to the bottom heating unit circuit. 
 

Содержание Gas Domestic Indoor Water Heater

Страница 1: ...This water heater must be installed and serviced by an authorised person Please leave this guide with the householder Owner s Guide and Installation Instructions Electric Domestic Water Heater ...

Страница 2: ...onsequences which may arise as a result of its application 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 relevant Standards Only a licensed person will have i...

Страница 3: ...er pages are intended for the installer but may be of interest About Your Water Heater 4 Regular Care 9 Water Supplies 11 Save A Service Call 15 Installation 18 Connections Plumbing 27 Connections Electrical 31 Commissioning 34 Draining The Water Heater 37 Warranty 39 ...

Страница 4: ... supply If the mains supply pressure in your area exceeds that shown on page 19 a pressure limiting valve must be fitted The supply pressure should be greater than 350 kPa for true mains pressure operation to be achieved HOW HOT SHOULD THE WATER BE The water heater features an adjustable thermostat which allows you to choose the most suitable temperature for your hot water needs Refer to Temperatu...

Страница 5: ...ply to the heating unit so a constant temperature is maintained The thermostat and its protective over temperature cut out is mounted inside the front cover of the water heater There is no need to switch the water heater off when it is not in use except when you are on an extended holiday The thermostat is fully automatic and power is only used when heating is required TEMPERATURE ADJUSTMENT An Op...

Страница 6: ...t and a combination temperature pressure relief valve In addition a RheemPlus water heater has a temperature limiting 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 The operation of the over temperature cut out on the thermostat indicates a possibly dangerous situation If the over tempera...

Страница 7: ...ch with its own thermostat One heating unit is at the base of the water heater and the other near the top Bottom heating unit During normal operation this heating unit supplies all the hot water Top heating unit Booster This heating unit only operates during periods of high demand to provide an additional supply of heated water Electrical connection The two heating units are wired for non simultan...

Страница 8: ...at either the switchboard or isolating switch HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY Installation requirements are shown on pages 18 to 25 The water heater must be installed by an authorised person and the installation must comply with National Standards AS NZS 3500 4 AS NZS 3000 and all local codes and regulatory authority requirements In New Zealand the installation must confor...

Страница 9: ...r any reason Operate the easing lever on the temperature pressure relief valve once every six months It is very important you raise and lower the lever gently DANGER Failure to do this may result in the water heater cylinder failing or under certain circumstances exploding If water does not flow freely from the drain line when the lever is lifted then the water heater should be checked by Rheem Se...

Страница 10: ...Water Supplies on page 11 Failure to do this may result in water at a temperature up to 70 C being delivered at the hot tap increasing the risk of scald injury EXPANSION CONTROL VALVE In many areas including South Australia Western Australia and scaling water areas an expansion control valve is fitted to the cold water line to the water heater The expansion control valve may discharge a small quan...

Страница 11: ...than 2500 mg L and when the correct colour coded anode is installed The use of an incorrect colour coded anode will void the cylinder warranty and may shorten the life of the water heater cylinder The correct colour coded anode must be selected and fitted to the water heater in accordance with the following advice and the Anode Selection chart on page 12 for warranty to apply to the water heater c...

Страница 12: ...tank and a reticulated public supply or another supply it is recommended the anode be inspected 3 years earlier than shown refer to Anode on page 11 CAUTION If the water supply has a TDS greater than 150 mg L and a green anode has not been changed to a black anode or if the TDS is greater than 600 mg L and the anode has not been changed to a blue anode there is the possibility the anode may become...

Страница 13: ...linder Where the saturation index exceeds 0 80 warranty does not apply to a standard watts density heating unit A low watts density heating unit must be used for warranty to apply to the heating unit Water which is scaling may be treated with a water softening device to reduce the saturation index of the water Refer to the Saturation Index chart on page 13 Refer to the cold water connection detail...

Страница 14: ...t should be tested to ensure the water supply meets the requirements given in these guidelines for warranty to apply SUMMARY OF WATER CHEMISTRY ADVICE AFFECTING WARRANTY The warranty of this water heater does not apply on the components listed below if the water heater is connected at any time to a water supply with water chemistry of Water Chemistry Component Total Dissolved Solids TDS 2500 mg L ...

Страница 15: ...all times for the water heater to operate as designed Are you using more hot water than you think Is one outlet especially the shower using more hot water than you think Very often it is not realised the amount of hot water used particularly when showering Carefully review the family s hot water usage Have your plumber fit a flow control valve to each shower outlet to reduce water usage Temperatur...

Страница 16: ... allows a small quantity of water to escape during the heating cycle However if it discharges more than a bucket full of water in 24 hours there may be another problem Continuous dribble Try gently raising the easing lever on the relief valve for a few seconds refer to Temperature Pressure Relief Valve on page 9 This may dislodge a small particle of foreign matter and clear the fault Release the l...

Страница 17: ...ater tap etc Even a small leak will waste a surprising quantity of hot water and electricity Replace faulty tap washers and have your plumber rectify any leaking pipe work Has there been an increase in hot water usage An increase in hot water usage will result in an increase in water heater operation Has your water heating tariff rate been increased by your electricity retailer since your previous...

Страница 18: ...be accessible without the use of a ladder or scaffold Make sure the temperature pressure relief valve lever is accessible and the front cover thermostat heating unit and if fitted the side cover and temperature limiting valve can be removed for service You must be able to read the information on the rating plate If possible leave headroom of one water heater height so the anode can be inspected or...

Страница 19: ... the installation diagram refer to diagram on page 27 Model 025 to 160 250 to 400 Relief valve setting 1400 kPa 1000 kPa Expansion control valve setting 1200 kPa 850 kPa Max mains supply pressure With expansion control valve 950 kPa 650 kPa Without expansion control valve 1120 kPa 800 kPa Expansion control valve not supplied with water heater TANK WATER SUPPLY If the water heater is supplied with ...

Страница 20: ...mperature limiting device is installed adjacent to the 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 pressure limiting valve and non return valve to the water heater If an expansion control valve is required it must always be installed after the non return valve and be the last valve prior to t...

Страница 21: ...imiting 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 connection on the water supply line to th...

Страница 22: ...water flow and return system in a building The benefits of the Off Peak electricity supply will be significantly reduced If a circulated flow and return system is required it is necessary to bypass the Off Peak electric water heater and install a secondary water heater connected to the hot water flow and return line and supplied from the Off Peak electric water heater Refer to the diagram on page ...

Страница 23: ...ed to the water heater for warranty to apply to the water heater cylinder refer to Water Supplies on page 11 and the Anode Selection chart on page 12 The black anode is typically fitted as standard Total Dissolved Solids Anode colour code 0 40 mg L Green 40 150 mg L Green or Black 150 400 mg L Black 400 600 mg L Black or Blue 600 2500 mg L Blue 2500 mg L Blue no cylinder warranty If the water supp...

Страница 24: ... pressure relief valve supplied with this heater must be fitted to the water heater SADDLING PIPE WORK To prevent damage to the cylinder when attaching pipe clips or saddles to the water heater jacket we recommend the use of self drilling screws with a maximum length of 13 mm Should pre drilling be required extreme caution must be observed when penetrating the jacket of the water heater Note Damag...

Страница 25: ...INSTALLATION 25 TYPICAL INSTALLATION OUTDOOR LOCATION INDOOR LOCATIONS OUTDOOR LOCATIONS TYPICAL INSTALLATION INDOOR LOCATION INDOOR LOCATIONS OUTDOOR LOCATIONS ...

Страница 26: ...640 1840 B mm 385 393 480 480 480 640 640 690 C mm 420 429 515 515 515 700 700 755 D mm 130 397 702 1102 1332 1117 1317 1479 E mm 116 142 64 64 104 73 113 121 F mm 75 80 84 84 84 128 128 129 G mm 1085 1005 1255 1346 H deg 26 26 23 23 23 32 32 30 J deg 65 59 58 58 58 88 88 83 K mm 545 545 705 705 L mm 183 183 262 262 Approx Weight empty kg 18 29 35 49 57 74 99 118 111 411 162 462 and 121 models hav...

Страница 27: ...aling tape or approved thread sealant on all fittings An isolation valve and non return valve must be installed on the cold water line to the water heater An acceptable arrangement is shown in the diagram Refer also to Hot Water Delivery on page 20 and to Mains Water Supply on page 19 A disconnection union must always be provided at the cold water inlet and hot water outlet on the water heater to ...

Страница 28: ... hot water line from the water heater The pipe sizing for hot water supply systems should be carried out by persons competent to do so choosing the most suitable pipe size for each individual application Reference to the technical specifications of the water heater and local regulatory authority requirements must be made TEMPERATURE PRESSURE RELIEF VALVE The temperature pressure relief valve is sh...

Страница 29: ...arge plastic insul 1 x small plastic insul Plugging Off Unused Apply approved seali compound to the thre 1 Fit a plug to ea cold water and hot wa plug to the unused Tighten the plugs 2 Fit a plastic insula plug EXPANSION CONTROL VALVE Local regulations may make it mandatory to install an expansion control valve ECV in the cold water line to the water heater In other areas an ECV is required if the...

Страница 30: ...ocal regulatory authority approval the drain lines from the temperature pressure relief valve and expansion control valve from an individual water heater may be interconnected The outlet of a drain line must be in such a position that flow out of the pipe can be easily seen but arranged so discharge will not cause injury damage or nuisance The termination point of a drain line must comply with the...

Страница 31: ...ll provide the maximum financial savings Discuss the power supply requirements with the householder A flexible 20 mm 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 Connect the power supply wires directly to the terminal block and earth tab connection ensuring there are no excess wire loops inside the front cover T...

Страница 32: ...e the solar input does not cause the thermostat s over temperature cut out to operate we recommend the water heater thermostat is set at 60 C to maximise solar contribution ASSEMBLY OF ADJUSTER MECHANISM ON OPTIMA MODEL When the front cover has been removed reassemble as follows Remove the knob from the front cover by depressing the locking tabs on the inside of the front cover Turn the thermostat...

Страница 33: ...PERATION OFF PEAK CONNECTION Electrical Circuit for Twin Element Models Robertshaw ST Thermostats The active from the continuous supply must be connected to the top heating unit circuit and the active from the Off Peak or time controlled supply must be connected to the bottom heating unit circuit ...

Страница 34: ... water heater If it is necessary to adjust the outlet temperature of the 384 or 854 RheemPlus model refer to Outlet Temperature Compensation Adjustment RheemPlus on page 35 Explain to the householder or a responsible officer the functions and operation of the water heater Upon completion of the installation and commissioning of the water heater leave this guide with the householder or a responsibl...

Страница 35: ...ter can be measured at the temperature pressure relief valve drain discharge point Do not measure this temperature from a hot tap Operate the easing lever on the temperature pressure relief valve and place the thermometer in the flow of water from the relief valve drain line Remove the upper plastic casing and insulation covering the pipe work on the side of the water heater by removing the three ...

Страница 36: ...asurement from the same hot tap Further adjust the temperature limiting valve as required turning the adjusting knob either counter clockwise down away from the water heater or clockwise up towards the water heater to increase or decrease the outlet water temperature until an acceptable water temperature not exceeding 50 C is measured at the same hot tap Turn off the hot tap Replace the insulation...

Страница 37: ...t let the lever snap back or you will damage the valve seat Operating the lever will release the pressure in the water heater Undo the union at the cold water inlet to the water heater and attach a hose to the water heater side of the union Let the other end of the hose go to a drain Operate the relief valve again This will let air into the water heater and allow the water to drain through the hos...

Страница 38: ...38 This page is intentionally blank ...

Страница 39: ...LOWING EXCLUSIONS MAY CAUSE THE WATER HEATER WARRANTY TO BECOME VOID AND MAY INCUR A SERVICE CHARGE AND OR COST OF PARTS a Accidental damage to the water heater or any component including Acts of God failure due to misuse incorrect installation attempts to repair the water heater other than by a Rheem Accredited Service Agent or Rheem Service b Where it is found there is nothing wrong with the wat...

Страница 40: ... labour costs being the responsibility of the owner Water heater installed in any other than a single family domestic dwelling Rheemglas RheemPlus Years 2 3 New water heater free of charge with installation and labour costs being the responsibility of the owner Optima Years 2 to 5 New water heater free of charge with installation and labour costs being the responsibility of the owner Note Refer to...

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