HOTSY • 900-1400 • 9.803-325.0-B OPERATOR MANUAL • GAS FIRED
13
PRESSURE W
ASHER
OPERA
TOR’S MANU
AL
INSTALLATION INSTRUCTIONS
Getting Started:
IMPORTANT:
Proper installation will assure satisfac-
tory performance, longer service life and lower main
-
tenance costs.
Location:
The location should protect machine from damaging en-
vironmental conditions, such as wind, rain and freezing.
1. The machine should be run on a level surface
where it is not readily influenced by outside sources
such as strong winds, freezing temperatures, rain,
etc. The machine should be located considering
accessibility for the replacing of components and
the refilling of detergents, adjustments and main
-
tenance. Normal precautions should be taken by
the operator of the machine to prevent excess
moisture from reaching the machine.
2. It is recommended that a partition be made be-
tween the wash area and machine to prevent direct
spray from the spray gun from coming in contact
with the machine. Excess moisture reaching the
power unit or electrical controls will reduce the
machine’s life and may cause electrical shorts.
3. During installation of the machine, beware of
poorly ventilated locations or areas where exhaust
fans may cause an insufficient supply of oxygen.
Sufficient combustion can only be obtained when
there is a sufficient supply of oxygen available for
the amount of fuel being burned. If it is necessary
to install a machine in a poorly ventilated area,
outside fresh air may have to be piped to the burner
and a fan installed to bring the air into the area.
4. Do not locate near any combustible material. Keep
all flammable material at least 20 feet away.
Allow enough space for servicing the machine.
Local code will require certain distances from floor
and walls. (Two feet away should be adequate).
WARNING: Avoid small areas or near exhaust fans.
Gas Codes:
Confer with local gas company and with proper mu-
nicipal officials regarding any specific code or regula-
tions governing the installation. The installation must
conform to local codes (U.S., ANSI Z223.1/NFPA54
National Fuel Gas Code; Canada, CAN 1-B149 Instal
-
lation Code).
Electrical:
The machine, when installed, must be electrically
grounded in accordance to local codes. Check for
proper power supply using a volt meter; check the se
-
rial plate for the correct requirements.
Gas Piping:
This machine shall be rigidly connected to the gas pip-
ing outlet and equipped with external manual shut-off
valves adjacent to such machine. All gas piping shall be
approved and installed in accordance with the Uniform
Mechanical Code.
Install a gas union in the gas line adjacent to and up
-
stream from the control manifold and downstream from
the manual main shut-off valve. A 1/8" NPT plugged
tapping accessible for test gauge connection shall be
installed immediately upstream of the gas supply con-
nection for the purpose of determining the gas supply
pressure to the burner, and to prevent damage to gas
valve.
If a manual gas shut off valve is not in the gas supply
line within six feet of the machine and in an accessible
location, one shall be installed.
Figure 1: Union Location
Union Connection
The following pipe sizes are just recommendations.
Always consult a local plumber and venting contrac-
tor for local codes and regulations during installation.
Pipe Sizing Chart for Natural Gas
The following chart is based on gas pressure in the
range 0-0.5 psi, specific gravity of 0.6 and pressure
loss of 0.5" W.C. Numbers are for straight schedule
40 pipe; fittings further reduce capacity. For example,
in 1" size, an elbow is equivalent to about 2.6 feet of
pipe and a tee is equivalent to about 5.2 feet of pipe.
Maximum capacity of pipe in cubic feet/hr of natural gas
(Multiply values by 1000 to get nominal BTU/hr capacity.
98033250-10
Manual Shut-Off Valve
(Dealer Supplied)
Gas Valve
Union
Burner
