Regency U31, U31-NG2, U31-LP2 User Manual

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Gas Inserts

U31 Regency Gas Insert

U31 Regency Gas Insert

Model U31-NG2 U31-LP2

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 0-2000 ft. #37 DMS #52 DMS

Orifi ce Size - Altitude 2000-4500 ft. #40 DMS #53 DMS

Minimum Input

Altitude 0-2000 ft. (0-610m)

Minimum Input

Altitude 2000-4500 ft. (610-1372m)

Maximum Input

Altitude 0-2000 ft. (0-610m)

Maximum Input

Altitude 2000-4500 ft. (610-1372m)

Vent Sizing 4” B-Vent 4” B-Vent

Approved Venting Systems

Flex Vent Systems: FPI AstroCap™ Flex Vent

14,500 BTU/h

(4.25 kW)

13,000 BTU/h

(3.81 kW)

30,000 BTU/h

(8.79 kW)

27,200 BTU/h

(7.97 kW)

13,700 BTU/h

(4.02 kW)

12,400 BTU/h

(3.63 kW)

27,500 BTU/h

(8.06 kW)

25,000 BTU/h

(7.33 kW)

Gas Inserts

NOTE: This unit may also be installed into new construction using a Zero

A

F

B

H

D

C

E

1" (25mm)

Optional
Hearth Trim
Risers

2" (51mm)

4" (102mm)

6" (152mm)

Dimension Description U31 Regency

A Faceplate Width 40-1/4” (1022mm)

B Faceplate Height 26-1/4” (667mm)

C Unit Width 27-7/8” (708mm)

D Unit Height 20-1/4” (514mm)

E Unit Depth 13-1/2” (343mm)

F Faceplate to Vent Centerline 11-3/4” (298mm)

G Faceplate Depth 1-3/8” (35mm)

H Height to Vent Collar 20-7/8” (530mm)

I Optional or Standard Front Depth 3-3/4” (95 mm)

Clearance Kit. Please refer to the Zero Clearance Kit Manual for
details.

Minimum Fireplace Dimensions

The minimum fi replace dimensions for the FPI gas fi replace insert are

G

I

shown in the following diagrams:

M

J

L

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K

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N

Dimension Description

J Height 21” (533mm) 21” (533mm)

K Width 26-1/2” (673mm) 29” (737mm)

L Depth 15” (381mm) 16” (406mm)

M Max. Lintel Bar Depth 9” (229mm) 9” (229mm)

N Rear Width 22-1/2” (572mm) 22-1/2” (572mm)

Contour

Faceplate

Molded

Faceplate

119August 2008 Product Specifi cations Book

Clearances

Gas Inserts

U31 Regency Gas Insert

Combustible Mantels

Unless otherwise stated the clearances listed below are Minimum
distances to combustible materials. Please Note: A major cause

of chimney related fi res is due to a failure to maintain required
clearances (air space) to combustible materials. It is of the greatest
importance that this fi replace and vent system be installed only in
accordance with these instructions.

B

E

G

Gas Inserts

I

F

C

A

D

H

Clearances to Combustibles

Dimension Description U31

A From Unit to Sides 10” (254mm)

B From Unit to Ceiling 47-1/2” (1207mm)

C From Unit to Mantel see mantel clearances

D From Standard Surround to Sides 4” (102mm)

E From Standard Surround to Ceiling 41-1/2” (1054mm)

F Minimum Mantel Height 13” (330mm)

G Maximum Mantel Depth 12” (305mm)

H Minimum Alcove Width 48” (1219mm)

I Maximum Alcove Depth 36” (914mm)

*No Hearth Required

Clearances when installed with a Zero Clearance Kit

Dimension Description U31

F Minimum Mantel Height 20” (508mm)

G Maximum Mantel Depth 11-1/2” (292mm)

Because of the extreme heat this fi replace emits, the mantel
clearances are critical. Combustible mantel clearances from top of

the louvers are shown in the diagram below. Mantel may be installed
anywhere in the shaded area or higher.

NOTE: Mantel clearances for Installation into a Zero Clearance Kit

are different. Please refer to the Zero Clearance Kit Manual
for details.

Note: A non-combustible mantel may be installed at a lower

height.

Note: Ensure the paint that is used on the mantel and the facing

is “heat resistant” or the paint may discolour.

120 August 2008 Product Specifi cations Book