Vermont Casting SDDVRCMB, SDDVRCB, SDDVRCCH, SDDVREB Burner Orifice Conversion, All Models, 20012950

Burner Orifice Conversion

1.Remove three (3) 3/8” nuts on bottom side of burner pan. (Fig. 74)

2.Carefully remove ember bed by tilting the right side up and lifting out toward the right side of the unit. (Fig. 75)

Remove Nut

Bottom View

Stardance Direct Vent - Rear Vent Gas Heaters

CO145

Fig. 76 Use two wrenches to avoid damage to manifold.

Orifice Orifice Air Shutter

ST918

Remove Nuts

Bracket

Fig. 74 Remove three (3) nuts securing ember bed in place.

Orifice

Bracket

Pem Studs

ST919

Fig. 75 Tilt ember bed slightly to correctly place on venturi and air shutter.

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. 76)

4.Install conversion orifice. (Refer to Table 2)

5.The air shutter is factory set according to table on Page 7 and should not need adjustment. The air shutter opening may be verified by measuring as shown in Figure 77.

CO142

Fig. 77 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. 75) 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 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 74.

3.Reinstall logs as per instructions on Page 29.

4.Place conversion label on valve.

5.Replace glass and stove front.

6.Restore gas to system and relight appliance accord- ing to Lighting Instructions on Page 33.

7.Leak check the system using a gas leak detector solution.

8.Relight the main burner in both the “HI” and “LO” po- sitions to verify proper burner ignition and operation.

Conversion is complete.

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