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Electric Instantaneous

Water Heaters

Service manual

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Содержание Hotrun

Страница 1: ...Electric Instantaneous Water Heaters Service manual...

Страница 2: ...b mains to the main switchboard and the total load on the load of the site 2 The plumber needs to make sure that the water supply is sufficient for the total flow of all Hotruns running simultaneously...

Страница 3: ...General Installation 1 The Hotrun is supplied with two screws to mount it without the need to open up the lid of the water heater 2 The Hotrun can be mounted in any orientation...

Страница 4: ...hase 16 or 20Amp dedicated circuit 2 Ensure that the property has the desired supply to the switchboard divide the load properly if on a 3 phase supply 3 The circuit ends close next to the water heate...

Страница 5: ...led 100 1000 kPa 2 Allow for a full bore stop cock without any flow restriction to be fitted in the cold water supply to each Hotrun 3 Connect the Hotrun only with the flat seal flexible hoses supplie...

Страница 6: ...Water Installation Remove any other restrictions in taps shower heads and aerators...

Страница 7: ...Water Installation remove retrictions from aerators...

Страница 8: ...ore applying electricity open the tap to flush debris and air from the Hotrun this may take a minute to remove all the air When the water is clean and free from burst of air turn the tap off and switc...

Страница 9: ...rse 3 The main switch or circuit breaker is switched on 4 The fuse circuit breaker is not blown triggered 5 Flow rate from cold supply is adequate for the installed Hotrun Hint Try to disconnect the h...

Страница 10: ...es activated due to air in the Hotrun not released before switching on the electrical supply Problem 1 Remedies Correct the water pressure problems remove any flow restrictors in outlets Disconnect th...

Страница 11: ...coming water is too cold The total flow is too high Remedy A flow restrictor should have been installed If so an additional ball valve in the water supply to the Hotrun can be used reduce the flow for...

Страница 12: ...ctly balanced flow restrictor in the supply line flow from the cold supply line is less than the requirements for the Hotrun Remedy Remove the restrictors in the tap or aerator fitting Fit the appropr...

Страница 13: ...tre this equates to approximately 30 kPa per floor plus the height of the roof tank Remedy Remove all restrictors in the tap or aerator and use star inserts in spout instead of aerator Allowing full f...

Страница 14: ...tch on Tests Ensured that the general conditions have been met Isolate the Hotrun unit by switching off an isolating switch and turning off the circuit breaker and secure and tag it in the off positio...

Страница 15: ...ch operation with a multimeter If the pressure differential switch works O K then check that the over temperature cut out s are not triggered If the contact of one of the micro switches remains closed...

Страница 16: ...sticking of the micro switches of the pressure differential switch Measure continuity of each element 10 to 18 ohms is the expected range depending on element power rating Remedy If the tests above in...

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Страница 19: ...Elwa Pty Ltd GPO Box 776 Adelaide SA 5001 P 08 8353 4040 F 08 8353 4042 www elwa com au sales elwa com au...

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