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

InsTallaTIon - gas boosTeD sysTeMs
9. Connect Gas to Booster
Connect a suitable gas supply and isolating valve to the gas booster� Follow instructions supplied with gas
booster� Keep gas booster isolated at this stage�

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 gas supply to the continuous flow water heater is isolated.
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 needs
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
CAUTION heating which could result in steam or hot water being discharged from fittings..

pRe solaR HeaTIng CHeCKs

Before commencing solar heating of the water in the system ensure the following actions have been completed:
Solar Collectors and Cylinder
1� Are the solar collectors installed with the correct slope and orientation to the sun?
2� Is the installation finished neatly with the roof made good, all tiles and flashings in place?
3� Are the bolts tight on the roof framework?
4� Are all solar collector and cylinder straps fitted and correctly anchored to the roof structure?
5� If leak testing completed and successful, have any covers been removed from the solar collectors?
gas booster
1� Ensure the gas supply is isolated� Remove the test point screw located on the gas inlet connection and attach
a pressure gauge�
2� Turn on the electrical power to the gas booster and turn on the gas supply�
3� Ensure the cold water inlet ('trio') valve on the storage cylinder inlet is open� Open all available hot water taps�
4� Operate ALL other gas appliances at their maximum gas rate, in accordance with manufacturers instructions�
Ensure building occupants do not have access to hot water outlets during this procedure�
CAUTION
5� With all gas appliances in operation at the maximum gas rate, the pressure should read between 1�13 - 3�0
kPa on Natural Gas� On LPG the pressure should be 2�75 - 3�0 kPa� If the pressure is lower, the gas supply
is inadequate and the appliance will not operate to specification.
It is the installers responsibility to check the gas meter, service regulator and pipe work for correct operation/
sizing & rectify as required� Note that the gas regulator on the appliance is electronically controlled and factory
pre-set. Under normal circumstances it DOES NOT need adjustment during installation. Make adjustments
only if the gas booster is not operating correctly and all other possible causes for incorrect operation have
been eliminated� Instructions for gas pressure setting are located in the pocket behind the front cover of the
gas booster�
Rinnai 50 CC OIM Issue 9