Service Instructions
AA.. BBUURRNNEERR OORRIIFFIICCEE
1. Initial Preparation
a. Close fuel supply valves to heater.
b. Allow heater to burn off remaining fuel in its gas
supply line.
c. Disconnect hose from heater.
d. Allow heater to cool.
2. Orifice Removal
a. Loosen retaining bolt which secures burner
assembly to burner channel. Pull burner assembly
from heater.
b. Disconnect compression nut from brass elbow at
pilot control valve and thermocouple from pilot
control valve. See Fig. 5.
FIG. 5
c. Carefully reposition pilot line and thermocouple
away from safety control valve.
d. Disassemble the following: See Fig. 6.
-- Pilot control with manual valve from inlet of
torch handle using appropriate wrench.
-- Torch handle from burner casting. Use a pipe
wrench.
-- Burner orifice from burner casting. Use a
1/2 in. socket.
FIG. 6
e. Ensure orifice hole is not plugged with dirt or other
materials. Clean the burner orifice or replace if
necessary.
3. Completion
a. To assemble, reverse these procedures.
b. Tighten all connections securely.
c. Open fuel supply valves to the heater.
d. Light the heater and check for gas leaks.
BB.. PPIILLOOTT AASSSSEEM
MBBLLYY
1. Initial Preparation
a. Close fuel supply valves to heater.
b. Allow heater to burn off remaining fuel in its gas
supply line.
c. Disconnect hose from heater.
d. Allow heater to cool.
2. Pilot Orifice
a. Using the appropriate wrench, loosen compression
nut at pilot orifice and carefully reposition pilot
tube away from the orifice. See Fig. 7.
b. Remove pilot orifice from pilot head.
(Continued on page 12)
FIG. 7
THERMOCOUPLE
ELBOW
COMPRESSION NUT
BURNER
HANDLE
BURNER ORIFICE
VALVE
ELBOW
VALVE
PILOT HEAD
BRACKET ASSEMBLY
PILOT ORIFICE
SCREEN
NUT
ATTACHMENT NUT
THERMOCOUPLE
CONNECTOR NUT
1111
AATTTTEENNTTIIOONN
■
Use only a soft brush, a dry rag, or compressed air to
clean the burner orifice.
■
Do not push instruments into the orifice hole. Doing so
may enlarge or distort the hole, creating improper
combustion.
