L.B. White 320, Owner'S Manual And Instructions

Page: 21 / 99

Vertical Convection Heaters
Owner’s Manual • Workman & Norseman
21
NORSEMAN 200 PLUS AND
NORSEMAN 250
Burner Orifi ce (See Fig. 17)
1. Disconnect compression nut from brass elbow and
thermocouple from pilot control valve.
2. Carefully reposition pilot line and thermocouple away
from safety control valve.
3. Disassemble the following:
-- Pilot control with manual valve from burner ori fi ce
-- Burner ori fi ce from burner casting.
4. Clean the burner ori fi ce.
FIG. 17
COMPRESSION
NUT
BURNER VALVE
PILOT LINE
THERMOCOUPLE
ELBOW
FIG. 18
BURNER
VALVE
VALVE
ELBOW
BURNER ORIFICE
Pilot Orifi ce (See Fig. 19.)
1. Loosen compression nut at pilot ori fi ce and carefully
reposition pilot tube away from the ori fi ce.
2. Remove pilot ori fi ce from pilot head and screen from
ori fi ce inlet.
3. Ensure ori fi ce hole is not plugged.
FIG. 19
PILOT HEAD
BRACKET ASSEMBLY
PILOT
SCREEN
COMPRESSION
NUT
VALVE
VALVE
ELBOW
BURNER ORIFICE
THERMOCOUPLE
ELECTRODE
ORIFICE
Safety Control Valve (See Fig. 18)
1. Remove pilot line from safety control valve.
2. Remove thermocouple at safety control.
3. Loosen safety control from manual burner
valve.