Vermont Casting 3390 EN - Manual (Page 32)

32 32
Radiance Direct Vent/Natural Vent Gas Heater
20004188
CO105
Gas Conversion
Pilot
2/15/99 djt
Pilot Hood
Index
Marks
Pilot Bracket
CO105
Fig. 60 Remove pilot hood. (Your pilot may have a different
appearance.)
CO106a
Gas Conversion
Pilot (Vermont)
7/19/99 djt
Pilot
Orifice
CO106b
Fig. 61 Remove pilot orifice.
NOTE: Be sure burner leg remains at a 90° angle to
firebox base after conversion.
Models 3352, 3354, 3390 thru 3399 (RF Models) Only
1. Follow procedure for pilot type 2 to replace pilot
orifice.
2. Remove and replace plug on lower right hand side
of the valve; Red for LP and Blue for NG. (Page 26,
Fig. 49)
3. Remove motor top cap. 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. 62)
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 torque #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.
FP1037b
comfort valve
convert
3/6/01 djt
LOCAL
REMOTE
O N
•
PILO
T
OFF •
LED
Motor Top Cap
Center
Plunger
Blue - NG
Red - LP
FP1037b
Fig. 62 Depress and turn center plunger.
Valve
Fig. 63 Remove and replace injector orifices.
ST353a
injector orifice
replace
3/21/00 djt
90°
Left Burner Leg
Injector Orifices
ST353a
All Models
1. Replace burner. Slide the burner in at an angle
with left side lower than the right side. Slide the left
side onto the injectors, making sure the burner leg
remains at a 90° angle to the base. Lower the right
hand side down in to place. Make sure the burner is
as far left as possible and the injector shoulders are
inside the burner.
NOTE: It is very critical to keep the left burner leg,
which holds the injectors, at a 90° angle to the base.
(Fig. 63) This keeps the orifices aligned with the
tubes inside burner. Failure to do so could affect the
flame appearance and performance of the unit.
2. Place conversion label on valve.
3. Reinstall the right and left log bracket assembly.
4. Reinstall the rear log bracket.
5. Replace logs.
6. Replace glass and stove front.
Conversion is complete.