Vermont Castings RAD- VTBB Installating And Operation Manual page 37

2. Remove and replace plug on lower right hand side
of the valve; Red for LP and Blue for NG. (Page 32,
Fig. 57)
3. Remove motor top cap using a standard slotted
screwdriver. Depress and turn center plunger until
arrow points to correct screw. Red for LP and Blue
for NG. NOTE: Plunger will "snap" into NG position
when arrow is close to blue screw. It will not "snap"
at LP (Red) position. (Fig. 66)
Center
Plunger
Blue - NG
Red - LP
Fig. 66 Depress and turn center plunger.
4. Insure manifold pressure remains between 3.2" - 3.5"
w.c. for NG and 9.5" - 10" w.c. for LP. To adjust the
manifold pressure, for NG, using a Torx #10 key turn
the blue screw clockwise to increase the manifold
pressure. Turn the screw counterclockwise to de-
crease the pressure. Use the red screw to adjust LP.
5. Replace motor top cap.
Pilot Orifice Conversion
1. Locate pilot. (Fig. 67)
Fig. 67 Locate pilot.
2. Replace pilot orifice.
Pilot Type 1 (SIT Pilot)
•
Remove pilot hood by lifting up. (Fig. 68) Do not
ST350
remove the snap ring to remove the pilot hood.
Jefferson
NOTE: It is not necessary to remove the pilot tube
air shutter adj
for conversion.
3/20/00 djt
•
Remove pilot orifice with Allen wrench. (Fig. 69)
•
Install the conversion orifice.
•
Reinstall pilot hood. Be sure to align hood with
index tab.
20012697
Motor Top Cap
Valve
OFF
•
FP1037b
FP1037b
comfort valve
convert
3/6/01 djt
Pilot
ST916
Radiance Direct Vent Gas Heater
Pilot Hood
Pilot
Bracket
Fig. 68 Remove pilot hood.
Index Tab
Snap Ring
CO106a
Fig. 69 Remove pilot orifice.
Pilot type 2 (Honeywell Pilot)
•
Loosen pilot hood turning counterclockwise using a
7/16" wrench. (Fig. 70) NOTE: You may use pen-
CO106a
etrating oil to prevent pilot hood threads from seizing
DV360/580
up.
Gas Conversion
Pilot2
1/28/00 djt
Index
Marks
Pilot Bracket
Fig. 70 Remove pilot hood. (Your pilot may have a different
appearance.)
•
Remove pilot orifice with needlenose pliers. (Fig.
71) NOTE: Use a wrench to hold pilot tube in place
while removing the orifice.
•
Install the conversion orifice.
•
Reinstall pilot hood and tighten until mark on pilot
hood aligns with mark on pilot bracket.
CO105a
Allen Wrench
CO105a
gas conversion
Pilot
1/28/00 djt
Pilot Hood
CO143
CO142
Rf pilot Conversion
6/07 djt
37