Paloma PH-203EWH, Owner'S Manual And Installation Instructions

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4
ABOUT YOUR WATER HEATER
MODEL TYPE
The electronic continuous flow gas water heater model you have chosen is for outdoor installation only. This
model has an extended
warranty (refer to “Warranty” on page 55).
The water heater can supply hot water up
to a maximum temperature with controllers fitted of 60

C.
Notes:

The water heater defaults to the pre-set outlet temperature which may be up to 75°C. Other
manufacturer’s controllers cannot be installed with this water heater.

The water heater may be installed as an in-series gas booster water heater to a solar preheat water heater.
For information relating to the function and operation of the solar water heater, refer to the Owner’s Guide
and Installation Instructions supplied with the solar water heater.

When installed as a gas booster to a solar preheater, the water heater:
■
Can deliver water at temperatures up to 75

C for a Premier Loline solar water heating system.
■
Temperature controllers must not be fitted to this water heater as temperatures higher than the
controller setting can be delivered. An approved temperature limiting device should be fitted to
protect “wet areas” bathrooms, showers, sinks.
■
During periods of low solar energy gain, the unit will boost the water temperature automatically to a
minimum 75

C when required.
WATER HEATER OPERATION
The wate r heater operates automatically, heating water as it passes
through the water heater. When a hot tap is opened, the gas burners
ignite to provide immediate heating of the water. The heat produced by
the burner is transferred to the water through the heat exchanger. The
water is heated to a constant temperature by the automatic adjustment
of the gas supply to the burner to suit the water flow rate (refer to
“Temperature Control” on pages 9 to 27). The gas burners extinguish
when the hot tap is closed.
Automatic safety controls are fitted to the water heater to provide safe
and efficient operation.
GAS BOOSTING FOR A SOLAR WATER HEATER
Water stored in the solar storage tank passes through the gas booster
water heater when a hot tap is opened. The gas booster water heater is
for heating water at times of low solar energy gain, such as during cloudy
or rainy weather, or during winter months.
Solar heated water can reach temperatures up to 75

C for a Premier Loline solar system. The gas booster
water heater operates automatically. When the solar heated water temperature is 58

C or higher, the flow
passes through the gas booster water heater without boosting. When the solar heated water temperature is
below 58

C, the gas booster water heater heats the water to a minimum temperature of 75

C.