Gas Inserts
U31 Regency Gas Insert
U31 Regency Gas Insert
Model
U31-NG2
U31-LP2
Fuel Type
Natural Gas
5” W.C. (1.25 kPa)
3.8” W.C. (0.95 kPa)
1.1” W.C. (0.27 kPa)
#37 DMS
Propane
Minimum Supply Pressure
Manifold Pressure - High
Manifold Pressure - Low
Orifice Size -Altitude 0-2000 ft.
Orifice Size - Altitude 2000-4500 ft.
12” W.C. (2.99 kPa)
11” W.C. (2.74 kPa)
2.9” W.C. (0.72 kPa)
#52 DMS
#40 DMS
#53 DMS
Minimum Input
Altitude 0-2000 ft. (0-610m)
14,500 BTU/h
(4.25 kW)
13,700 BTU/h
(4.02 kW)
Minimum Input
Altitude 2000-4500 ft. (610-1372m)
13,000 BTU/h
(3.81 kW)
12,400 BTU/h
(3.63 kW)
Maximum Input
Altitude 0-2000 ft. (0-610m)
30,000 BTU/h
(8.79 kW)
27,500 BTU/h
(8.06 kW)
Maximum Input
Altitude 2000-4500 ft. (610-1372m)
27,200 BTU/h
(7.97 kW)
25,000 BTU/h
(7.33 kW)
Vent Sizing
4” B-Vent
4” B-Vent
Approved Venting Systems
Flex Vent Systems:
FPI AstroCap™ Flex Vent
Minimum Fireplace Dimensions
The minimum fireplace dimensions for the FPI gas fireplace insert are
A
G
shown in the following diagrams:
I
F
B
H
D
C
E
1" (25mm)
2" (51mm)
Optional
Hearth Trim
Risers
M
4" (102mm)
L
J
6" (152mm)
Dimension Description
U31 Regency
A
B
C
D
E
F
G
H
I
Faceplate Width
40-1/4” (1022mm)
26-1/4” (667mm)
27-7/8” (708mm)
20-1/4” (514mm)
13-1/2” (343mm)
11-3/4” (298mm)
1-3/8” (35mm)
Faceplate Height
Unit Width
K
N
Unit Height
Unit Depth
Faceplate to Vent Centerline
Faceplate Depth
Height to Vent Collar
Optional or Standard Front Depth
20-7/8” (530mm)
3-3/4” (95 mm)
Contour
Faceplate
Molded
Faceplate
Dimension Description
J
Height
21” (533mm)
21” (533mm)
29” (737mm)
16” (406mm)
9” (229mm)
K
L
Width
26-1/2” (673mm)
15” (381mm)
NOTE: ThisunitmayalsobeinstalledintonewconstructionusingaZero
Clearance Kit. Please refer to the Zero Clearance Kit Manual for
details.
Depth
M
N
Max. Lintel Bar Depth
Rear Width
9” (229mm)
22-1/2” (572mm)
22-1/2” (572mm)
August 2008 Product Specifications Book
119
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