Gas Pressure Checks - L.B. White Workman CV225 Owner's Manual And Instructions

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This procedure is to be done once a year prior to the
heating season, anytime the heater is moved from one
job location to the next, or after servicing the heater.
■
Do not disassemble the safety control valve.
■
Do not attempt to replace any components of the
safety control valve.
■
The safety control must be replaced if any physical
damage occurs to it.
■
Failure to follow this warning will result in fire or
explosions, leading to injury or death, and building
damage.
MATERIALS REQUIRED
(To be secured through local purchase)
Quantity Description
1 High Pressure Gas Gauge capable of
reading up to 15 PSIG
1 1/8 in. black iron street ell.
A. PREPARATION
1. Close fuel supply valve at propane gas supply
container.
2. Allow heater to burn off gas remaining in it's gas
supply line..
3. Position the variable heat valve to its lowest setting..
4. Remove case barrel from heater.
B. GAUGE INSTALLATION
1. Using an wrench, remove the cap from the safety
control valve as shown in Fig. 12
FIG.12
CAP
2. Install a 1/8 in. street elbow and pressure gauge at
this point. See Fig.13
WARNING

GAS PRESSURE CHECKS

FIG.13
3. Open fuel supply valves to heater.
C. READING PRESSURES
1. Light the heater. Set the variable rate valve to its
highest setting.With the heater operating, the
pressure gauge should read the pressure specified on
the dataplate or in the specification section of this
owner's manual.
2. Does the pressure reading agree with that given on
the dataplate? If so, no fur ther checking or
adjustment is required. Proceed to section D.
3. If the pressures does not agree with that specified on
the dataplate, then check the following:
-- Improper regulator for heater.
-- Regulator out of adjustment.
(Replace if necessary).
-- Blockage in gas hose.
-- Insufficient size or quantity of propane gas supply
containers.
D. COMPLETION
1. Once the proper pressure has been confirmed, close
fuel supply valves.
2. Allow heater to burn off fuel remaining in gas supply
line.
3. Remove elbow, and gauge.
4. Install hex cap onto safety valve. Tighten securely.
5. Check for gas leaks.
13