INSTALLATION – WATER HEATER
15
Note:
The water heater must be well secured to the wall or frame using two fasteners each at the top and
bottom of the unit (
21 for mounting hole positions and weights of the water heaters).
Use the screws provided only if they are suitable for the wall or frame type. Otherwise select and use
alternative fasteners suitable for the application. The fasteners must be capable of bearing the full weight of
the water heater so it may not work loose nor impose any load on the gas and water pipe work connected to
the water heater.
Refer to the fastener manufacturer‟s information and recommendations for the type of
fastener to use for the wall or frame type and load bearing requirements.
Alternatively the water heater can be recessed into a wall (refer to
on page 16).
For a single water heater installation, refer to the typical
installation diagrams on pages
For a multiple water heater installation of the 27 litre models, follow the
The water heater must not be installed in an area with a corrosive atmosphere where chemicals are stored or
where aerosol propellants are released. Remember the air may be safe to breathe, but when it goes through
a flame, chemical changes take place which may attack the water heater.
A secondary flue is not required. The water heater must not be installed indoors or in a confined space.
The water heater must be located to ensure that the location of the flue terminal complies with the
requirements of AS 5601 or AS/NZS 5601.1, as applicable under local regulations. As a guide the following
requirements are extracted from the Gas Installations Standard. The distances are measured along the wall
behind the water heater.
At least 300 mm between the top of the flue terminal
and the eaves.
At least 300 mm (20 litre models) or 500 mm (27 litre
models) between the flue terminal and the edge of
any opening into the building, such as an openable
door or window, measured horizontally*.
At least 1500 mm between the top of the flue terminal
and the edge of any opening into the building, such as
an openable window, measured vertically.
At least 300 mm between the flue terminal and a
return wall or external corner, measured horizontally*.
At least 1500 mm between the flue terminal and any
opening into a building, in the direction of the flue
discharge.
At least 500 mm between the flue terminal and a fence, wall or other obstruction, in the direction of the
flue discharge.
Note:
* If these horizontal distances cannot be achieved, AS/NZS 5601.1 states an equivalent horizontal
distance measured diagonally from the nearest discharge point of the flue terminal to the opening may be
deemed to comply. Check with the local regulator.
SAFE TRAY
Where damage to property can occur in the event of the water heater leaking, the water heater must be
installed over a safe tray. Construction, installation and draining of a safe tray must comply with
AS/NZS 3500.4 and all local codes and regulatory authority requirements.
PIPE COVER
The pipe work to the water heater can be housed within a pipe cover. A pipe cover kit (PN 299838
– 20 litre
models, or PN 299830
– 27 litre models) is available for such an installation. Refer to the installation
instructions which accompany the pipe cover kit.
Note:
The pipe cover PN 299830 for 27 litre models is available with an antique white finish only.
Clearance Requirements
Continuous Flow Gas Water Heater
