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Burner Orifice
Tools Required:
• Ratchet with extensions
• Tradesman 170: 9/16 in. socket
• Tradesman 400: 7/8 in. socket
• Tradesman 400 DF: 1-3/16 in. socket
A. Using the above tools, reach down the barrel of the
heater and loosen the orifice from the center of the
burner plate.
B. Remove the orifice. See Fig. 26 for Tradesman 170
and Fig. 27 for all Tradesman 400.
C. Clean with air or a soft brush.
D. Ensure copper washer is installed onto orifice before
threading back into orifice holder in burner plate.
E. See Fig. 28 for Tradesman 170, Fig. 29 for Trades-
man 400 and Fig. 30 for Tradesman 400 Dual Fuel.
FIG. 26
FIG. 27
Tradesman Construction Heaters
FIG. 28
COPPER
WASHER
FIG. 29
COPPER
WASHER
FIG. 30
Owner's Manual • Tradesman
21
COPPER
WASHER
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