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TDVDSN Series Direct Vent Gas Fireplace
20007890
IMPORTANT: Always check for gas leaks with a
soap and water solution. Do not use open flame for
leak testing.
Air Shutter Settings
Opening
Model “A”
33TDVDSN 1/32” (1.0 mm)
33TDVDSP 3/8” (9.5 mm)
36TDVDSN 1/32” (1.0 mm)
36TDVDSP 3/8” (9.5 mm)
39TDVDSN 1/32” (1.0 mm)
39TDVDSP 3/8” (9.5 mm)
NOTE: These are minimum settings. Air shutter open-
ings may be increased to prevent flame sooting.
T203
Air shutter
12/12/03 djt
T203
Opening
“A”
Fig. 45 Air shutter opening.
Normal and High
Direct Vent Units - Inputs - Orifice Size - Altitude
BTU/Hr Manifold Pressure Orifice 0 - 2000ft. Altitude in USA
Model Max. Input @ Max. Orifice 0-4500ft Altitude in Canada
33TDVDSN 18,000 3.5”w.c. .079”
33TDVDSP 18,000 10.0” w.c. #56 DMS
36TDVDSN 20,000 3.5” w.c. #45 DMS
36TDVDSP 20,000 10.0” w.c. #55 DMS
39TDVDSN 22,000 3.5” w.c. #43 DMS
39TDVDSP 22,000 10.0” w.c. #54 DMS
Conversion Kits
Change Natural Change Propane
Model to Propane to Natural
33TDVDSN 20007864* --
33TDVDSP --
36TDVDSN 20007891* --
36TDVDSP --
39TDVDSN 20007903* --
39TDVDSP --
* Included with fireplace.