15
Operations
IMPORTANT: This gas line must be provided with a
shut off valve.
17. Install the gas pressure gauge or manometer into
the gas valve inlet pressure tap. This reading will
indicate the incoming gas pressure from your gas
supply.
18. It is very important that the incoming gas pressure
be between 4.5 - 14.0 water column inches (.16 -
.50 PSI). If adjustment is necessary, it must be
done by a qualified gas service technician.
WARNING: Maximum inlet pressure to machine
14.0 water column inches (.50 PSI).
19. Next install the gas gauge or manometer in the
outlet pressure tap port of the gas valve. This
reading will indicate the gas pressure going to the
burner ring.
20. Because of the safety features within the gas
valve, adjustment of the burner ring gas pressure
can only be made while the machine is running and
the burner is lit. Follow the instructions under
Before Starting
and
To Start
for details to operate
burner.
21. Turn pressure regulator adjustment screw
clockwise to increase gas pressure. Adjust gas
pressure to 3.5 water column inches. (.13 PSI).
22. Turn off the burner and pump. Shut off gas supply
to the machine before removing the gas gages or
manometers. Always check new gas line connec-
tions with soapy water
for leaks.
23. Install the new cap screw.
24. Remove LP gas label on gas valve.
25. Reinstall the chassis front and rear panels on the
machine.
Converting from Natural Gas to LP Vapor
Gas
CAUTION: Have a qualified gas service technician
install and service your equipment.
To convert back to LP vapor fuel, it is important to follow
the following instructions.
Modifications will need to be made to several compo-
nents within the washer. Before starting, disconnect
gas and electrical power supply from the machine.
You will need the following items:
•
Gas pressure gauge or gas manometer
•
10" Adjustable wrench
•
Medium Phillips head screwdriver
•
Large slot head screwdriver
•
3/16" Allen wrench
•
44 gas nozzles #66 orifice Part Number 908260
•
LP Vapor gas pilot Part Number 829858
•
LP
Vapor gas conversion kit Part Number 753138
•
LP Vapor fuel tank. We recommend using a
minimum 30 - 40 lb bottle. Bottle must have a
shut-off valve.
•
LP gas hose - four feet long minimum, 3/4"
inside diameter. Must have 3/4" male NPT
thread end to attach to machine. Available
through Hotsy, Part Number 707432. This hose
is supplied in the 771 portable gear/LP bottle
Rack Kit, Part Number 280771.
•
Gas primary regulator. Controls the pressure
from the gas bottle into the gas valve. Regulator
must be capable of handling 376,000 BTU/Hr.
with an adjustment range of 12.0 to 14.0 inches
Water Column. Available through Hotsy, Part
Number 860178.
1. Refer to
Converting to Natural Gas
and follow
steps 1 through 6.
2. Discard pilot and replace with LP vapor gas pilot,
Hotsy Part Number 829858.
3. Carefully remove burner ring nozzles.
4. Replace the natural gas nozzles with the #66 gas
nozzles. It is important to replace them as LP vapor
gas is required to use smaller orifice gas nozzles
than natural gas. When installing the nozzles into
the burner ring, do not over tighten and do not use
pipe thread sealing compound.
5. Refer to
Converting to Natural Gas
and follow
steps 11 through 13 except use LP Vapor Conver-
sion Kit instead of Natural Gas Conversion Kit.
6. Refer to
Converting to Natural Gas
and follow
steps 14 and 15.
7. To complete LP vapor conversion reference
LP
Vapor Gas From A Portable Bottle
and follow
steps 4 through 11.
Hotsy 771 / 772 8.941-246.0 - Y
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Страница 22: ...22 Notes Hotsy 771 772 8 941 246 0 Y ...
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Страница 28: ...28 Coil Outlet 1 5 3 4 2 6 Hotsy 771 772 8 941 246 0 Y ...
