Rheem GAS BOOSTED SOLAR WATER HEATER Specifications download pdf (Page 42)

COMMISSIONING

Program the timer (refer to “Timer Operation” on page 13).

It is recommended the timer be set to enable a boosting period of three hours, with the end of period to

coincide with the commencement of the evening hot water usage. A suggested boosting period is

between 3:30 PM (15:30 Hours) and 6:30 PM (18:30 Hours), however the boosting period should be set

to suit the hot water usage pattern of the household. Check with the householder.

Note: The timer uses a 24 hour clock.

This three hour boosting period is sufficient to allow the gas burner to heat up the entire contents of the

solar storage tank through a 50°C temperature rise. This may be necessary during periods of very low

solar energy gain through the solar collectors, such as during constant rain or extremely cloudy weather,

particularly in winter when the incoming cold water temperature is lower. This period will also provide a

sufficient heat up time for the gas booster to operate, if required, to satisfy the requirements of AS 3498.

Note: AS 3498 requires that a water heater provides the means to inhibit the growth of Legionella

bacteria in potable water. This water heater can satisfy this AS 3498 requirement provided the gas

booster is energised for a sufficient period each day and the gas booster thermostat setting is 60°C or

higher.

If necessary, press the timer “MAN” button to activate the “OVERRIDE” function of the timer.

This will allow the gas control system to operate.

Open the gas isolation valve fully.

Check the gas pipe work for leaks.

Light the water heater (refer to “Lighting the Water Heater” on page 45).

When you are satisfied the main burner is operating correctly, press the timer “MAN” button to

deactivate the timer.

The main burner will extinguish.

Explain to the householder or a responsible officer the functions and operation of the timer.

Warning: Upon completion of the installation and commissioning of the water heater, leave this guide

with the householder or 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 heater is

turned on.

GAS INLET PRESSURE

IMPORTANT – CHECK the gas supply pressure at the inlet to the water heater with the water heater and all

other gas burning appliances in the premises operating (burners alight). The minimum gas supply pressure

is:

Natural Gas 1.13 kPa Propane 2.75 kPa Butane 2.75 kPa

If this minimum cannot be achieved, it may indicate the meter or the gas line to the water heater is

undersized. It is important to ensure that an adequate gas supply pressure is available to the water heater

when other gas burning appliances, on the same gas supply, are operating.

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Rheem GAS BOOSTED SOLAR WATER HEATER Specifications Page 42