Rheem Gas Heavy Duty Water Heater Models 265 Litre and 275 Litre - Manual (Page 16)

INSTALLATION
16
INDOOR INSTALLATION
A secondary flue must be installed with an indoor water heater to discharge
combustion products outside the building. The flue must be self supporting and
not impose a load on the water heater. Use a slip joint or similar to allow for
disconnection. There must be a vertical rise of 600 mm from the draught
diverter before changing direction. The flue design and installation must comply
with AS 5601. There are particular fluing requirements for a 631 275 model
water heater installed with a room sealed installation kit. Refer to the
installation instructions supplied with the kit.
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.
The water heater is to be installed at
ground or floor level and must stand
vertically upright. There are also special
requirements in AS 5601 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.
If installed in a cupboard, an adequate air
supply must be provided. For efficient
water heater operation allow a free open
space at both the top and bottom of the
access door, each of at least:
• 66,000 mm 2 for each 110 MJ model
• 120,000 mm 2 for each 200 MJ model.
SAFE TRAY
It is a requirement of AS/NZS 3500.4 that
for a new installation, a water heater be
installed in a safe tray where in the event
of a leak, property may otherwise be
damaged. Construction, installation and
draining of a safe tray must comply with
the abovementioned Standard.