Operating instructions

4040
Radiance
®
Direct Vent Gas Heater
20306759
RADVTCS Series Models
1. Using the TORX T20 bit remove and discard the three
(3) pressure regulator mounting screws from the old
pressure regulator assembly. (Fig. 77)
CO105a
gas conversion
Pilot
1/28/00 djt
Pilot Hood
Pilot
Bracket
CO105a
Fig. 79 Remove pilot hood.
CO106a
DV360/580
Gas Conversion
Pilot2
1/28/00 djt
Index Tab
Snap Ring
Allen Wrench
CO106a
Fig. 80 Remove pilot orice.
ST350
Jefferson
air shutter adj
3/20/00 djt
Pilot
ST916
Fig. 78 Locate pilot.
2. Insure the rubber gasket (D) is properly positioned
and install the new step motor (E) pressure regulator
assembly to the valve using the new screws supplied
with the kit. Tighten the screws securely. (Ref. torque
= 25 in/lb) (Fig. 77)
3. Install the identication label (F) supplied with the stepper
motor to the valve body where it can easily be seen.
(Fig. 77)
4. Make step motor and mV valve electrical connec-
tions.
5. Regulator conversion complete.
6. Test for Leaks
Pilot Orice Conversion
1. Locate pilot. (Fig. 78)
ST1093
install new step motor
ST1093
Fig. 77 Remove mounting screws from old pressure regulator
assembly. Replace step motor with new conversion step motor.
2. Replace pilot orice.
3. Remove pilot hood by lifting up. (Fig. 79) Do not remove
the snap ring to remove the pilot hood. NOTE: It is not
necessary to remove the pilot tube for conversion.
4. Remove pilot orice with Allen wrench. (Fig. 80)
5. Install the conversion orice.
6. Reinstall pilot hood. Be sure to align hood with index
tab.
Burner Orice Conversion
1. Remove three (3) 3/8" nuts on bottom side of burner
pan. (Fig. 81)
ST918
remove nuts
6/07
Remove Nuts
Remove Nut
Bottom View
Fig. 81 Remove three (3) nuts securing ember bed in place.
ST918