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Recommended solar system layout
Rinnai continuous flow water heaters configured for solar systems produce hot water at
75 °C and are not suitable for use with water controllers. The household water supply
MUST be protected by a suitable tempering valve.
Installation
Rinnai continuous flow water
heaters in solar installations are
only suitable as gas boosters in
solar hot water systems. These
models produce water at higher
than normal temperatures and
must be connected to the hot
water supply by use of a suitable
tempering valve.
Install a Rinnai continuous flow
water heater using a flow diversion
valve as shown. Remember 'B to
Boiler' when setting up the flow
diversion valve.
The water heater must be set to
75 °C (refer dip switch settings on
following pages).
Rinnai water controllers cannot be
used with Rinnai Infinity solar units
as the hot water does not always
pass through the Rinnai Infinity,
and the Rinnai Infinity dip switch
setting of 75 °C is unable to be
adjusted.
System configuration to protect
for Legionella
If the system is configured
according to the details above
it will meet the requirements of
the Acceptable Solution G12/AS2
for protection against Legionella.
Section 3.5.2 states:
b) the instantaneous water heater
must heat all water passing
through it to not less than 70 °C.
Recommended system layout using a Rinnai Continuous Flow water Heater and Flow Diversion
Valve
Continuous Flow Water Heater Installation Guide 04-12 | 21
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