A
C
B
D
H
I
F
E
U35 Gas Insert
Model U35-NG1 U35-LP1
Fuel Type Natural Gas Propane
Minimum Supply Pressure 5” W.C. (1.25 kPa) 12” W.C. (2.99 kPa)
Manifold Pressure - High 3.8” W.C. (0.95 kPa) 11” W.C. (2.74 kPa)
Manifold Pressure - Low 1.1” W.C. (0.27 kPa) 2.9” W.C. (0.72 kPa)
Orifi ce Size -Altitude 0-4500 ft. #33 DMS #50 DMS
Minimum Input
Altitude 0-4500 ft. (0-1372m)
17,500 BTU/h
(5.13 kW)
17,500 BTU/h
(5.13 kW)
Maximum Input
Altitude 0-4500 ft. (0-1372m)
35,000 BTU/h
(10.26 kW)
35,000 BTU/h
(10.26 kW)
Vent Sizing 3” Co-linear 3” Co-linear
Minimum Fireplace Dimensions
The minimum fi replace dimensions for the FPI gas fi replace insert are
shown in the following diagrams:
L
M
J
K
N
Dimension Description
Contour
Faceplate
Molded
Faceplate /
Palace Font
J Height 25” (635mm) 26-3/4” (679mm)
K Width 32-1/4” (819mm) 34-1/2” (876mm)
L Depth 17” (432mm) 18” (457mm)
M Max. Lintel Bar Depth 9” (229mm) 10” (254mm)
N Rear Width 25” (635mm) 25” (635mm)
U35 Gas Insert
Dimension Description U35
A Faceplate Width 45-9/16” (1157mm)
B Faceplate Height 31-1/8” (791mm)
C Unit Width 32-1/4” (819mm)
D Unit Height 24” (610mm)
E Unit Depth 16-1/8” (410mm)
F Faceplate to Vent Centerline 9-7/8” (251mm)
G Faceplate Depth 1-3/8” (35mm)
H Height to Vent Collar 25 1/2” (648mm)
I Optional or Standard Front Depth 3-3/4” (95mm)
Approved Venting Systems
Flex Vent Systems: FPI AstroCap™ Flex Vent
129August 2008 Product Specifi cations Book
Gas Inserts
Gas Inserts
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