Gas Boosters; Hydrogen Gas; Water Temperature; Turning The Water Heating System Off And On - Rinnai SG175 Operation & Installation Manual

GAS BOOSTERS

Do not touch the flue outlet or do not insert any objects into the flue outlet.
•
Keep flammable materials, spray cans, fuel containers, trees, shrubs and pool chemicals etc, well clear of
the flue outlet.
•
Do not use the gas types other than those designated on the data plate� For example, do not use Propane/
Butane gas mixtures on appliances marked Propane Gas�
•
Do not use Propane Gas on appliances marked as Natural Gas and vice versa�

HYDROGEN GAS

In the case of systems using a vitreous enamel lined cylinder, if the hot water unit is not used for two weeks or
more, a quantity of hydrogen gas, which is highly flammable, may accumulate in the water heater. To dissipate this
safely, it is recommended that a non electrically operated hot tap be turned on for two minutes at a sink, basin, or
bath, but not a dishwasher or other appliance. During this procedure there must be no smoking, open flame or any
electrical appliance operating nearby� If hydrogen is discharged through the tap, it will probably make a sound like
air escaping�

WATER TEMPERATURE

The solar control unit and pump ensure water circulates between the solar collectors and storage cylinder until
the water at the base of the cylinder reaches approximately 65°C� Under these conditions water at the hot outlet
may exceed 85°C� During periods of low solar gain supplementary heating can occur� The gas booster will heat
any water from the solar tank that is less than 55°C to 70°C� Electric boosting temperatures will depend on the
solar controller used� However the thermostat on the tank must be set to 60°C to meet Australian regulatory
requirements.
TomeetAustralianregulatoryrequirements,supplementaryheatingmustbeoperational.
IMPORTANT

TURNING THE WATER HEATING SYSTEM OFF AND ON

Off
If you plan to be away for only a few nights, we suggest you leave the water heating system switched on� If it is
necessary to switch off the water heater, do so as outlined below:
Electric Boosted Systems
•
Switch off the electrical supply to the supplementary heating element. The switch is usually marked and
located in the electricity meter box of the dwelling�
•
Switch off the electric supply to the solar controller and pump.
Gas Boosted systems
•
Switch off the electric supply to the gas booster.
•
Switch off the electric supply to the solar controller and pump.
Turningoffpowertothesolarcontrollerwillpreventoperationofthepumpedwatercirculation
usedinPumpedFrostProtectionmode..Thismayberequiredforwarrantyonthesolarcollectors. 
Refer to the supplied warranty booklet.
IMPORTANT
Rinnai
WARNINGS AND IMPORTANT INFORMATION
7 Split Solar OIM