Regency Fireplace Products Energy U31-NG10 User manual

U31-10 Gas Insert | 1
U31 Gas Insert
Model U31-NG10 U31-LP10
Fuel Type Natural Gas Propane
Minimum Supply Pressure 5” W.C. (1.25 kPa) 12” W.C. (2.99 kPa)
Manifold Pressure - High 3.5” W.C. (0.87 kPa) 10” W.C. (2.49 kPa)
Manifold Pressure - Low 1.6” W.C. (0.40 kPa) 6.4” W.C. (1.59 kPa)
Orifice Size -Altitude 0-2000 ft. #37 DMS #52 DMS
Orifice Size - Altitude 2000-4500 ft. #40 DMS #53 DMS
Minimum Input
Altitude 0-2000 ft. (0-610m)
20,600 BTU/h
(6.04kW)
22,000 BTU/h
(6.45 kW)
Minimum Input
Altitude 2000-4500 ft. (610-1372m)
19,200 BTU/h
(5.62 kW)
20,000 BTU/h
(5.86 kW)
Maximum Input
Altitude 0-2000 ft. (0-610m)
30,000 BTU/h
(8.79 kW)
28,000 BTU/h
(8.21 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
UNIT DIMENSIONS WITH STANDARD FACEPLATE UNIT DIMENSIONS WITH LOW PROFILE FACEPLATE
8-1/8 ”
Low prole
Standard
Faceplate
8-1/8 ”
Low prole
Standard
Faceplate
MINIMUM FIREPLACE DIMENSIONS
The minimum fireplace dimensions for the FPI gas fireplace insert are shown in the following diagrams:

2 | U31-10 Gas Insert
Clearances
Unless otherwise stated the clearances listed below are minimum
distances to combustible materials. Please Note: A major cause
of chimney related fires is due to a failure to maintain required
clearances (air space) to combustible materials. It is of the greatest
importance that this fireplace and vent system be installed only in
accordance with these instructions.
U31-10 Gas Insert
From Unit
Sides A 10" / 255 mm
Ceiling B 47.5" / 1205 mm
Mantel C See mantel
clearances
Max. Mantel Depth G 12" / 305 mm
Min. Alcove Width K 48" / 1220 mm
Max. Alcove Depth L 36" / 915 mm
* No Hearth Required
Clearances for Standard Faceplate /
Low Profile Faceplate with Safety Screen
Clearances for Low Profile Faceplate with Safety
Screen
12" Mantel
12" Mantel
3-1/2"
Mantel
3-1/2"
Mantel
17"
17"
17"
17"
13"
13"
19-1/2"
to floor
19-1/2"
to floor
Top of
Louver
Top of
Louver
Top
Faceplate
Top
Faceplate
2
0
12 64
810
2
0
12 64
810
2
2
0
0
12
12
6
6
16
16
4
4
14
14
8
8
18
18
10
10
Side View
Side View
U31 mantle clearnace
Faceplate
I
16" Min.
Flush
with Floor
Hearth
Existing
Hearth
Combustible
Flooring
Mantle
C
22" Min.
12" Max.
G
F
16" Min.
Baymant.eps
12" Mantel
3-1/2"
Mantel
19-1/2"
to floor
2
0
12 64
810
2
0
12
6
16
4
14
8
18
10
20
22
24
26
21"
25"
Side View

U31-10 Gas Insert | 3
Venting
THE APPLIANCE MUST NOT BE CONNECTED TO A CHIM-
NEY FLUE SERVING A SEPARATE SOLID FUEL BURNING
APPLIANCE.
This appliance is designed to attach to a 4” diameter type B-Vent or listed
gas fuel type vent liner running the full length of the chimney. A minimum
flue height of 12 feet is recommended. B-Vent must be supported by a
vent support - supplied by vent manufacturer. See chart on this page
for minimum distances from roof.
The FPI Insert incorporates its own internal draft hood, so no additional
external draft hood is required.
Periodically check that the vent is unrestricted and an adequate draft
is present when the unit is in operation. (See page 8 for spillage test.)
Before installing vent system ensure that the damper plate is open and
secure to prevent the damper plate from falling down and crushing the liner.
WARNING: Operation of this appliance when not connected
to a properly installed and maintained venting system or
tampering with the blocked vent shutoff system can result
in carbon monoxide (CO) poisoning and possible death.
Combustion and Ventilation Air
WARNING: This appliance needs fresh air for safe operation
and must be installed with provisions for adequate combus-
tion and ventilation air available to the room in which it is
to be operating.
Follow CAN/CGA B149 (in Canada) or ANSI Z223.1 (in the USA)
requirements, and any local codes or regulations of the enforcing authority.
Air for combustion is drawn in through the front of the unit, therefore, the
front of the unit must be kept clear of any obstructions.
U31-10 Gas Insert