Filling The System; Pre Solar Heating Checks - Rinnai Prestige Operation & Installation Manual

The power supply to the heating elements must not be activated until the system is filled with water.
WARNING
Wiring of electric element
The power supply to the element of the solar storage cylinder can be
Off-Peak (overnight), Extended Off-Peak (overnight and day), continu-
ous or other tariffs available from the local electricity supply authority�
Rinnai strongly recommends the use of an off-peak tariff to ensure
that solar heating takes priority over electrical heating� If this tariff isn't
available, then a timer can be used to limit electrical heating to non
solar hours�
A flexible 20 mm conduit is required for the electrical cable to the
storage cylinder� The conduit is to be connected to the unit with a 20
mm terminator� Connect the power supply wires directly to the terminal
block and earth tab connections ensuring there are no excess wire
loops inside the front cover�
Heating element Thermostat Temperature settings
Australian Standards require a minimum thermostat set point of
60°C to inhibit the growth of Legionella Pneumophilia bacteria� In the
interests of durability, the thermostat set point for storage cylinders
should not exceed 70°C� Hence, the thermostat set point should be at
least 60°C and no greater than 70°C�

fIllIng THe sysTeM

Ensure building occupants are warned to stay clear of the solar system components, building perimeter
and roof since hot water or steam may be discharged from pipes or components�
CAUTION
1� Ensure the electric power supply to the water heater is switched 'OFF'�
2� Turn 'ON' the hot water tap at the sink� Open the stop cock in the cold water mains supply line�
3� The entire system will now be filled with cold water. Most air will be dispelled through the tap. Some air will
need to be bled from the air bleed valve on the collectors�
4� Turn 'OFF' the hot tap at the sink when water flows freely without air bubbles or air bursts. Check all connections
for leakage and tighten if necessary. This applies especially to fittings in positions not easily accessed such
as near the solar collectors� Operate the easing gear of both the PTR and ECV valves at the storage cylinder
to ensure these valves are functional�
If leaks are detected the system must be drained and leaks repaired before the system is refilled. If
this is necessary, cover the solar collectors with packaging cardboard or a tarp to prevent them from
heating which could result in steam or hot water being discharged from fittings..
CAUTION

pRe solaR HeaTIng CHeCKs

Before commencing solar heating of the water in the system ensure the following actions have been completed:
Rinnai
InsTallaTIon - eleCTRIC boosTeD sysTeMs
53 CC OIM Issue 9