Technical data

INSTALLATION
17
For a single water heater installation, follow the diagrams on pages 24 and 23. For multiple water heater
installations, follow the instructions on pages 28 to 31.
INDOOR INSTALLATION
The water heater is to be installed at floor level and must stand
vertically upright on a stable fireproof base as acceptable to local
authorities. There are special requirements in AS 5601 and
AS/NZS 5601.1 for water heaters installed in a garage, an enclosed
space and other locations. Remember all local authorities have
regulations about putting water heaters into roof spaces.
For indoor models the distances set out in the diagram should be
observed. Keep the water heater and flue at least 25 mm clear of
walls, cupboards, timber or any other combustibles and at least
500 mm clear of curtains and furnishings.
Ventilation
The ventilation of a room or an enclosure such as a cupboard, where
the water heater is installed must comply with AS 5601 or
AS/NZS 5601.1.
If the water heater is installed in a room or an enclosure, where the
total thermal input of the water heater and any other gas burning
appliance(s) exceeds 3 MJ / h for each cubic metre of room or
enclosure volume, an adequate air supply must be provided.
For efficient water heater operation allow two permanent openings into
the room or enclosure, each of at least:
30,600 mm
2
for a 51 MJ model
The distance between the top of the upper opening and the ceiling and the distance between the bottom of
the lower opening and the floor must not exceed 5% of the total height of the room or enclosure.
Secondary Flue
A secondary flue must be installed with an indoor water heater to discharge combustion products outside the
building. The flue design and installation must comply with AS 5601 or AS/NZS 5601.1.
The water heater is supplied with a draught diverter and an adaptor, designed to receive a 100 mm diameter
flue (620 260 model).
Remove the draught diverter and adaptor from the protective packaging.
Fit the draught diverter by inserting the tabs on the legs into the slots in the top of the water heater.
Insert the adaptor into the outlet spigot of the draught diverter cone.
The secondary flue must:
be seated inside of the adaptor of the draught diverter.
be self supporting and not impose a load on the water heater.
use a slip joint or similar to allow for disconnection.
be designed to run vertically for the maximum possible distance, and not less than 600 mm, before any
change of direction.
Clearance Requirements
Heavy Duty Gas Indoor Water Heaters