Vermont Castings Radiance RADVTCB Homeowner's Installation And Operating Manual page 39

Fig. 71 Remove pilot orifice.
Burner Orifice Conversion
1. Remove three (3) 3/8" nuts on bottom side of burner
pan. (Fig. 72)
2. Carefully remove ember bed by tilting the right side
up and lifting out toward the right side of the unit.
(Fig. 73)
Bottom View
ST918
Fig. 72 Remove three (3) nuts securing ember bed in place.
Orifice
Venturi Bracket
Bracket
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Fig. 73 Tilt ember bed slightly to correctly place on venturi
and air shutter.
20012697
Pilot
Orifice
CO144
RF Pilot conversion
6/07 djt
Remove Nut
Remove Nuts
Pem Studs
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3. Remove injector orifice from left burner bracket with
a 1/2" wrench. Use a back up wrench to prevent
damage to the manifold. (Fig. 74)
CO1044
Fig. 74 Use two wrenches to avoid damage to manifold.
4. Install conversion orifice. (Refer to Table 2)
5. 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 75.
Orifice
Bracket
Fig. 75 The air shutter setting is 1/2" (13 mm) from the orifice
bracket to the edge of the air shutter.
All Models
1. Replace burner making sure venturi on bottom of
ember bed aligns with orifice and is seated properly
on air shutter assembly. (Fig. 73) Make sure burner
is slid into place at a slight angle and opposite to
how it was removed. When burner is slid into place,
the three (3) pem studs should slide down through
ST919
clearance holes into the bottom of the control panel.
2. Thread and tighten 3/8" nuts back onto pem studs
on underneath side of control panel, reversing Step
1 shown in Figure 72.
3. Reinstall logs as per instructions on Page 26.
4. Place conversion label on valve.
Radiance Direct Vent Gas Heater
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Orifice
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CO145
Air Shutter
CO142
39