Vermont Casting RADVTCBS Manuel D’Utilisation

38

38

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)

CO144

RF Pilot conversion

6/07   djt

Pilot 

Orifice

CO1044

Fig. 71  Remove pilot orifice.

�����
�����������
����

Remove Nuts

Remove Nut

Fig. 72  Remove three (3) nuts securing ember bed in place.

ST918

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)

�����
��������������
����

Pem Studs

ST919

Fig. 73  Tilt ember bed slightly to correctly place on venturi 
and air shutter.

Orifice 
Bracket

Venturi Bracket

������
����������������
����

Orifice 
Bracket

Orifice

Air Shutter

CO142

Fig. 75  The air shutter setting is 1/2” (13 mm) from the orifice 
bracket to the edge of the air shutter.

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. 

�����
��������������
����

CO145

Fig. 74  Use two wrenches to avoid damage to manifold.

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 
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.