Raypak B0507 Owner's Manual And Installation Instructions page 13

COMBUSTION / VENTILATION AIR
Indoor model water heaters must be installed in a protective enclosure or properly constructed plant room with
adequate ventilation in accordance with AS 5601 or AS/NZS 5601.1.
Ideally ventilation shall be via two permanent openings DIRECTLY to outside, one at an upper level and one at low
level. Refer to AS 5601 or AS/NZS 5601.1 for ventilation requirements and calculations.
NOTE: The minimum dimension of any opening shall be 6 mm.
Warning: Air supply to the area where the water heater is installed must not be affected by mechanical exhaust
vents such as kitchen or bathroom fans, spa blowers, etc. Mechanical exhaust vents may create a negative
pressure in the area where the water heater is installed and can become a hazard by causing asphyxiation,
explosion or fire.
OUTDOOR INSTALLATION
The normal water heater design is with the water pipe
entry from the left hand side. For servicing purposes allow
the required clearance in front of the water heater for
burner tray removal (refer to
The water heater must NOT be installed inside any roofed
structure or under eaves, roof overhangs, or pool decks.
When installing the water heater on a raised base, the
base material MUST be solid and filled in a distance of 1
metre all around the water heater (e.g. if steel mesh
decking is used, a suitable plate material must be installed
to fill in the perforations) to prevent excessive drafts
entering the water heater from underneath.
The following distances extracted from the Australian Gas
Installations Standard AS/NZS 5601 or AS/NZS 5601.1
must be observed:

At least 500 mm between the top of the flue terminal and the eaves.

At least 1 500 mm horizontally between the flue terminal and the edge of any opening into the building,
measured horizontally.

At least 500 mm between the flue terminal and a return wall or external corner, measured horizontally along the
wall.

At least 1 500 mm below any openable window.

At least 500 mm between the flue terminal and a fence, wall or other obstruction facing the terminal.
HIGH WIND CONDITIONS
In areas where high winds occur, it may be necessary to:

Locate the water heater a minimum of one (1) metre
away from high vertical walls.

Install a wind break to protect the water heater from
the prevailing winds.

Replace the standard flue terminal with a HIGH WIND
top (at extra cost).
COLD WATER SUPPLY
Water Heating Applications
Where the cold water supply pressure exceeds that shown in the
approved pressure limiting valve is required and should be fitted as shown in the
Diagram"
on page 15.
Mechanical/Process Heating Applications
A cold water feed regulator (Pressure Reducing Valve) should be installed on the cold water make up line. The
minimum water pressure should be as shown in the
prevention in accordance with AS/NZS 3500.1 may be required.
"„Clearances"
on page 12).
"Pressure
Specifications" table on page 14, an
"Pressure
Specifications" table on page 14. Backflow
13
INSTALLATION
"Cold Water Connection Plumbing