Installation - Gas Boosted Systems; Gas Booster Location; Gas Supply; Hot Water Delivery Temperature - Rinnai Prestige Operation & Installation Manual

InsTallaTIon - gas boosTeD sysTeMs

gas boosTeR loCaTIon

The S20, S26 and S32 gas boosters are designed for 'Outdoor" Installation only� As such, they 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.
The gas booster must be mounted on a vertical structure with the water and gas connections on the underside
pointing downwards� The heated outlet of the cylinder is connected to cold water inlet of the gas booster�
Ensure that the wall or structure on which it is to be mounted are capable of supporting the weight of the appliance
and associated pipe work� See page 17 for individual gas booster weights� For gas boosters installed on elevated
structures or under floors specific requirements apply.
Refer to AS/NZS 5601 for details.
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Attach the gas booster to the wall using screws�
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Location of the gas booster flue terminal must be in accordance with Figure 6.2 of AS/NZS 5601.
If an internal model which has been converted to a solar gas booster follow information supplied with the unit for
location, mounting and flueing requirements.

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�
sMaRTsTaRT®
The Smartstart® is a separate system that works in conjunction with the Rinnai solar hot water system.
When activated by the manual activation switch, water in the pipework connected between the solar hot water
system and the hot water outlets is warmed before any outlets are opened� This results in water savings and added
convenience� Refer to page 47 for installation details�
Rinnai 46 CC OIM Issue 9