Vermont Castings RADVT(CS)CBSB Installation And Operating Instructions Manual page 42

Radiance Direct Vent Gas Heater
®
Model
RADVT
RADVTCS
Model
RADVT
RADVTCS
Model
RADVT/RADVTCS
[Required for altitudes above 2000' (610 m) up to 4500' (1,370 m)]
Model
RADVT/RADVTCS #33 / 0.113"
(Natural gas only)
*LP models do not need re-orificed up to 4500' (1,370 m) above sea level.
4242
Table 2. Injector Orifice Size Matrix
Conversion to LP
Kit # Orifice
20012729
1.75 mm
20300165
Conversion to Natural Gas
Kit # Orifice
20012899
#31 / 0.120"
20300166
Table 3. Air Shutter Adjustment
Natural Gas
1/2" Open
Table 4. High Altitude Orifice
Orifice
20012554
Input (BTU/h)
Part # Minimum
20012946 25,000
Input (BTU/h)
Part # Minimum
20006927 25,000
Natural Gas
High Altitude
1/2" Open 1/2" Open
Input (BTU/h)
Part # Minimum Maximum
25,000
Maximum
36,000
Maximum
38,000
LP
36,000
20306759