Illustration #3 Enclosed Room Ven-
tilation
Illustration #4 Hose Connection
Illustration #5 High Pressure Hose Con-
nection
Illustration #6 Quick Connect
12
3. Install the recommended flue pipe per local, state and national codes,
including the National Fuel Gas Code ANSI Z223.1/NFPA No. 54. In Canada;
Refer to the CSA B149.1 Gas Installation Code. If the flue pipe exceeds 10
feet in length or contains more than two elbows, the natural draft may be
eliminated and the burner will not ignite. In cases of this nature, a certified
power vent* may be used to remove exhaust gases from the building.
Exhaust may be vented out roof vents as well as side wall horizontal vent
systems.
DO NOT install a movable flue pipe damper.
*Vent must meet all necessary local requirements and be installed according
to instruction manual and all applicable codes by a qualified technician.
4. If the unit is being installed in an enclosed room, provide adequate air for
combustion by installing openings to the room near the ceiling for ventilation
and near the floor for burner combustion. These openings should be sized
using one square inch for each 1000 BTU per inch of the machine.
Example: A pressure washer with a 400,000 BTU input requires openings
of 400 square inch or approximately 3 feet x 1 foot. (See illustration
#3).
5. If the building in which the unit is being installed seems unusually tightly
constructed, it is recommended that air intakes extending to the outside of
the building be employed to supply combustion air. End the intakes outside
the building with a downward opening to protect these intakes from snow
and/or rain. Include a mesh screen no smaller than 1/4" over the opening.
WATER SUPPLY:
1. Select a water supply hose which is a quality grade of garden hose measuring
at least 3/4" ID and no longer than 50'. (See illustration #4)
2. Connect one end of the water supply hose to the water inlet of the unit.
Connect the other end of the hose to your pressurized water supply.
NOTE: If there is a high mineral content in your water, it is recommended
that a water softener be used to prevent the possibility of excessive
scale buildup inside the heat exchanger coil.
3. Be certain all connections are securely tightened.
a. Water supply hose to the Water Inlet on the unit.
b. Water supply hose to the Pressurized Water Supply.
4. Follow the incoming water requirements listed below:
a. Water pressure must be between a minimum of 20 pounds per square
inch (PSI) and a maximum of 65 PSI.
b. Incoming GPM must be approximately one gallon more than the
outgoing GPM stated on the pressure washer I.D. Plate. (You can check
GPM by timing how long it takes to fill a 5 gallon container.)
c. Incoming water temperature must not exceed 125°F. Excessive pump
damage may result if the water temperature exceeds this acceptable
level.
NOTE: If the water supply is inadequate or the hose is kinked, the unit
will run rough and the burner will not fire.
5. Never allow the unit to operate without the incoming water line attached
and the water supply completely turned on.
HIGH PRESSURE CONNECTION:
Connect the high pressure discharge hose by connecting one end to the
pressure washer and the other end to the gun assembly. Make certain the
quick connects are securely locked together. (See illustration #5 and #6)
INSTALLATION
Operator's Manual