Vermont Castings Radiance RADVTSCCB Installation And Operating Instructions Manual page 48

FUEL CONVERSION
Burner Orifice Conversion
• Remove three (3) 3/8" nuts on bottom side of burner
pan. (Figure 81)
• Carefully remove ember bed by tilting the right side up
and lifting out toward the right side of the unit. (Figure
82)
Bottom View
ST918
Fig. 81 Remove three (3) nuts securing ember bed in place.
Orifice
Venturi Bracket
Bracket
ST918
remove nuts
6/07
Fig. 82 Tilt ember bed slightly to correctly place on venturi and
air shutter.
4848
Remove Nut
Remove Nuts
Pem Studs
ST919
ST919
tilt ember bed
6/07
Radiance
• Remove injector orifice from left burner bracket with a
1/2" wrench. Use a back up wrench to prevent damage
to the manifold. (Figure 83)
• Install conversion orifice. (Refer to Table 2)
• The air shutter is factory set according to Table 3 and
should not need adjustment. The air shutter opening
may be verified by measuring as shown in Figure 84.
Fig. 83 Use two wrenches to avoid damage to manifold.
Orifice
Bracket
Co145
back up wrench
7/07
Fig. 84 The air shutter setting is 1/2" (13 mm) from the orifice
bracket to the edge of the air shutter.
CO142
air shutter meas
6/07
Fig. 86
Direct Vent Gas Heater
®
Orifice
Air Shutter
20306759
CO145
CO142