12
Operations
Venting
If the machine is used indoors, regulations or ventila-
tion concerns may call for a chimney or furnace
pipe.When venting, if the heating module is to be in an
enclosed area with a chimney on it, be sure the
chimney is the same size as the stack on the module.
Poor draft will cause the machine to soot and not
operate efficiently. When installing, keep in mind that
the machine should be positioned in such a manner
that the stack will be as straight as possible and
protrude through the roof of the building at a proper
location and at sufficient height to eliminate downdraft.
The chimney shall be installed with a down draft
diverter. Natural and LP gas series pressure washers
that incorporate a natural draft burner assembly
designed to heat water that comes from the pressure
washer pump require a draft diverter and vent pipe for
exhausting to the outside. This operator's manual
indicates this machine is to be vented through the
ceiling using straight pipe or 45° elbows. It also discour-
ages the use of any 90° venting elbows which restrict
air flow through the burner causing poor burner condi-
tions. If this machine is going to be installed to a 90° or
extended exhaust vent run length which may restrict air
flow it is recommended that a contractor install a power
vent. When a contractor has found it impossible to vent
through the ceiling then power venting can be calcu-
lated to help eliminate exhaust restriction on this
natural draft machine. This draft inducer (power vent)
must be installed by a licensed contractor who can
calculate size, operation connections and associated
dampeners. We are not a licensed contractor and as
such we are unable to make recommendations for
suitable make and model of power vents. It is important
that the licensed contractor consult local building
codes. We can only make recommendations and the
selection of the venting must take into account the type
of roof or wall material it contacts which could change
the vent requirement for compliance with local building
codes
Draft Diverter
The draft diverter shall be
installed at least three (3) feet
above the heating coil. The
diverter serves to sever the
chimney effect created in all
sections of furnace pipe posi-
tioned below to enhance the
draft through the burner. It
also helps prevent freezing of
the coil due to wind chill
factors. (Optional)
When a room is of unusually tight construction and has
a kitchen and/or bathroom ventilating fan, which may
be used for exhausting air to outdoors - or has a vented
fireplace - it is recommended that combustion air be
supplied to the enclosed room through intakes
extending to the outside of the building and terminating
in down turned fittings, suitably arranged to prevent
obstruction from snow or rain, and including a
protecting screen not smaller than 1/4 inch mesh.
Illustration showing air openings necessary to supply
air for combustion when installed in an enclosed room.
Ventilating air openings - 1/2 square inch for
each 1000 BTU per hour input for make-up air
from outside the building.
Water Source
The heating module was designed to accept a cold
water electric pressure washer. The water source for
the attached pressure washer should be supplied by a
5/8" I.D. garden hose with a city water pressure of not
less than 30 psi. If the water supply is inadequate, or if
the garden hose is kinked, the machine will run very
rough and the burner will not fire.
Inspection and Testing Gas Piping
The building structure should not be weakened by
installing the gas piping. The piping should not be
supported by other piping, but should be firmly
supported with gas hooks, straps, bands or hangers.
Butt or lap welded pipe should not be run through or in
an air duct or clothes chute.
Before turning gas on, close all openings from which
gas can escape. Check system for leaks immediately
after turning gas on. This can be done by watching the
1/2 cubic foot test dial and allowing 5 minutes to show
any movement, or by soaping each pipe connection
and watching for bubbles. If a leak is found, make the
necessary repairs and repeat the above test.
GF 9452/9462 Operator’s Manual 8.914-365.0 - M
Summary of Contents for 9452
Page 2: ...2 GF 9452 9462 Operator s Manual 8 914 365 0 M Machine Data Label ...
Page 26: ...26 Notes GF 9452 9462 Operator s Manual 8 914 365 0 M ...
Page 27: ...27 Parts Parts 1 103 906 0 1 103 908 0 9452 9462 GF 9452 9462 Operator s Manual 8 914 365 0 M ...
Page 41: ...41 GF 9452 9462 Operator s Manual 8 914 365 0 M Electrical Wiring Diagram B B OR B ...
Page 42: ...8 914 365 0 Printed in U S A ...
