Gas pressure checks, Fig. 24, Fig. 22 fig. 23 – L.B. White I-34 Infraconic Pilot Ignition User Manual
Page 19
LEAD END OF THERMOCOUPLE
THERMOFUSE
5/16"
COVER
UPPER NUT
THERMOCOUPLE
LEAD
COVER
LOWER NUT
TEST KIT HOSE
FUEL SUPPLY VALVE
(OPEN THIS VALVE TO
USE PRESSURE GAUGE)
GAS SUPPLY HOSE
GAS INLET OF HEATER
PRESSURE GAUGE KIT
20736
OPEN
FIG. 24
A.
Preparation
1.
Obtain an L.B. White pressure gauge test kit - Part
No. 20736.
2.
Close the fuel supply valve to the heater.
3.
Brush or blow off any dust and dirt on or in the
vicinity of the gas control valve.
4.
Disconnect the gas hose from the heater.
B.
Gauge Installation
1.
Connect the pressure test kit between the heater and
its gas supply hose as shown in Fig. 24. Insure both
gas shut-off valves on the test kit are in the closed
position when connecting the kit to the heater and
gas supply.
2.
Open the main fuel supply valve to the heater.
3.
Open only the gas shut-off on the test kit to which the
main gas supply hose is connected. Light the heater.
C.
Reading Pressures
1.
Set building temperature control to call for heat.
2.
Re a d t h e p r e s s u r e g a u g e w h e n t h e h e a te r i s
operating at full heat output and also when the pilot
only is lit.
3.
Does the reading on the gauge of the test kit agree
with that specified on the dataplate? If so, then no
further checking or adjustment is required. Proceed
to Section D.
4.
If the pressure does not agree with that specified on
the dataplate, the regulators controlling gas pressure
to the heaters requires adjustment.
D.
Completion
1.
Once gas pressure has been confirmed and/or
properly set, close the fuel supply valve to the heater
and allow the heater to burn off any gas remaining in
the gas supply line.
2.
Remove the gauge kit and connect gas hose to
heater.
3.
Open the main fuel supply valves to the heater and
light the heater.
4.
Set building control to desired temperature.
GAS PRESSURE CHECKS
19
(TYPICAL)
FIG. 22
FIG. 23
THERMOCOUPLE INSTALLED
INJECTOR TUBE
THERMOCOUPLE BODY
RETAINING NUT
COVER
THERMOCOUPLE TIP
LOCATION HOLE IN PLATE
1/2 IN TO 9/16 IN
FINISHED
THERMOCOUPLE
POSITION