Rheem GAS BOOSTED SOLAR WATER HEATER Service Manual download pdf (Page 41)

CONNECTIONS – ELECTRICAL

The power supply to the water heater must not be switched on until the solar storage tank is filled

with water.

MEGGER READING

It is not mandatory to conduct a megger test on a plug in appliance, however if a megger test is conducted

on this water heater, then the following should be noted.

Warning: This water heater contains electronic equipment and 500 V insulation tests must only be

conducted between either active and earth or neutral and earth. An active to neutral test WILL damage the

electronics.

An insulation test result of approximately 660 KΩ for this water heater is normal.

Typically the insulation resistance between live and earthed parts of an electrical installation should not be

less than 1 MΩ. However AS/NZS 3000:2000 clause 6.3.3.3.2 „Results‟ states:

“The value of 1 MΩ may be reduced to:

0.01 MΩ for sheathed heating elements or appliances; or

a value permitted in the Standard applicable to electrical equipment.”

This model water heater is categorised as a „stationary class 1 motor operated appliance‟ and has been

tested to AS/NZS 3350.1:2002 clause 16 „Leakage current and electric strength‟ and has passed the

requirements of this Standard. Therefore, this model water heater complies with the condition stated in

AS/NZS 3000:2000 clause 6.3.3.3.2 (b).

ELECTRICAL CONNECTION

All electrical work and permanent wiring must be carried out by a qualified person and in accordance with the

Wiring Rules AS/NZS 3000 and all local codes and regulatory authority requirements.

Warning: Temperature controllers must not be fitted to an in-series gas booster as part of a solar water

heater system because water at a temperature much higher than the controller setting can be delivered.

The solar storage tank and gas booster both require a 240 V AC, 50 Hz mains power supply for operation.

The solar storage tank and gas booster are both supplied with a 1.8 metre power cord and each require their

own switched general purpose outlet (GPO) to be located within 1.2 metres of the installation. Two GPOs are

required and each GPO must have a continuous power supply. The GPOs are required to be weatherproof if

installed outdoors.

The power consumption of the water heater is:

Component

Power

consumption

Comments

Solar controller

3 Watts

Constant load

Solar pump

165 Watts

Maximum load at solar heating cycle start up

(for approximately two (2) minutes)

50 Watts

Average load during the solar heating cycle

Gas booster

80 Watts

Burner on, anti frost device inactive

175 Watts

Burner on, anti frost device active

The solar storage tank and gas booster will only operate on a sine wave at 50 Hz. Devices generating a

square wave cannot be used to supply power to the water heater.

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