Installation-GasBoostedSystems; Overview Of System Components; Gas Booster Location; Gas Supply - Rinnai Prestige Operation & Installation Manual

INSTALLATION - GAS BOOSTED SYSTEMS

OVERVIEW OF SYSTEM COMPONENTS

The range of gas boosted solar hot water systems include all the components shown on pages 38 to 43 (refer
to the appropriate diagram depending on cylinder type/size).
The pump kit and associated plumbing connections are factory pre-assembled. All other components and fittings
will require connection on site. The gas booster and pump/controller kit may be mounted to the front of the storage
cylinder casing or in an alternative external location. In all cases the heated outlet of the cylinder is connected to
the cold water inlet of the gas booster.

GAS BOOSTER LOCATION

Unless specifically designated as a internal model, the gas booster is designed for outdoor installation only. As
such, it must be located in an above ground open air situation with natural ventilation, without stagnant areas,
where gas leakage and products of combustion are rapidly dispersed by wind and natural convection. The location
must comply with the clearances specified in AS/NZS 5601. See page 36.
The gas booster must be mounted on a vertical structure with the water and gas connections on the underside
pointing downwards. In most installations the gas booster is mounted directly on the storage cylinder using two
custom made mounting brackets (supplied). In all cases the heated outlet of the cylinder is connected to cold water
inlet of the gas booster.

GAS SUPPLY

The maximum gas consumption of the gas booster and the required gas pressure are shown on the appliance data
plate. If the gas pipe sizing is insufficient the customer will not get the full performance benefit. Gas pipe sizing
must consider the gas input to the gas booster as well as all the other gas appliances on the premises. The gas
meter and regulator must be specified for this gas rate. An approved sizing chart such as the one in AS/NZS 5601
should be used. An approved full flow isolation valve and disconnection union must be fitted to the gas supply inlet
of the gas booster. Isolation valves must not be fitted directly to the booster.

HOT WATER DELIVERY TEMPERATURE

Gas boosters for use in solar hot water systems are preset to deliver a fixed temperature of 70°C in accordance with
plumbing regulations. In addition, they contain the warning stating "Rinnai Water Controllers are NOT compatible
with solar hot water installations and MUST NOT BE USED in the vicinity of the temperature controller connections
inside the appliance."
Gas Boosters other than models designated "S20", "S26", "S26i", "S32" or "Solar" must not be used.
Gas Boosters marked with the text: "THIS APPLIANCE DELIVERS WATER NOT EXCEEDING 50°C
NOTE IN ACCORDANCE WITH AS 3498" are incompatible with solar hot water systems and must not be
used.
Rinnai 34 Split Solar OIM