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INSTALLATION – WATER HEATER
INSTALLATION WITHIN A COVERED AREA
The water heater must be located such that the installation meets the requirements of AS/NZS 5601.1. There
must be sufficient ventilation so the water heater has an adequate supply of combustion air and the flue
products are dispersed safely. It is the licensed installer's responsibility to ensure the installation complies with
the relevant sections of the Gas installations Standard.
Installation of this water heater is permitted within a covered area open on at least two sides, if its flue terminal
is located to ensure a free flow of air across it is achieved.
AS/NZS 5601.1 also allows the installation of a continuous flow gas water heater within a covered area open
on one side only if:
•
the flue terminal is within 500 mm of the opening and is discharging in the direction of the opening, and
•
there is no other flue terminal, gas meter, electricity meter, fuse box or opening into the building along the
wall within the 500 mm distance, and
•
the terminal is located to ensure a free flow of air across it is achieved.
Additional clearances to openings into the building or obstructions also apply, refer to AS/NZS 5601.1, Fig 6.2.
PIPE COVER
The pipe work to the water heater can be housed within a pipe cover. A pipe cover kit (Rheem
AU – Part 299425, NZ – Part 320116) is available for such an installation. Refer to the installation instructions
which accompany the pipe cover kit.
RECESS INSTALLATION
The water heater can be installed recessed into a wall. A recess box (Rheem AU – Part 299831,
NZ – Part 320316) is available for such an installation. Refer to the installation instructions which accompany
the recess box kit for information on its installation.
The rating plate on the side of the water heater should be moved to or the information on it, including the water
heater serial number, manufacture date and model number, indelibly copied onto either the front panel of the
water heater or to another position which is visible when the water heater is installed so a responsible officer
or the householder can access the water heater details when required. An additional rating label is supplied
attached to the inside of the front cover of the water heater. This is for a service person to access the water
heater details when required.
MAINS WATER SUPPLY
Where the mains water supply pressure exceeds that shown in the table below, an approved pressure limiting
valve that does not have non-return valve characteristics (such as an RMC PSL series valve) is required and
should be fitted as shown in the
Model
Relief valve setting
Maximum mains supply pressure
Minimum mains supply pressure *
* minimum water supply pressure required to achieve the rated flow
and performance
Notes
•
It is not recommended to install this water heater with a low pressure water supply.
•
A minimum water supply pressure of 140 kPa is required to achieve the rated flow and performance of
the water heater.
•
If this water heater is installed as an in-series gas booster for a solar water heater, the maximum water
supply pressure to the solar water heater, without an expansion control valve (ECV), is generally 800 kPa,
however it may be less than this for some models. Refer to the Owner's Guide and Installation Instructions
supplied with the solar water heater for maximum mains supply pressure details.
•
If sludge or foreign matter is present in the water supply, it is recommended a suitable filter be incorporated
in the cold water line to the water heater.
•
This water heater is not suitable for connection to bore water or spring water unless a water treatment
device is fitted.
•
"Water Supplies"
Refer to
water and gas connection detail diagram
27
1750 kPa
1000 kPa
140 kPa
on page 14 for further information on water chemistry.
20
on page 28.
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