Regency P121-NG2 User manual

P121 - P121LC/RC - P131 Zero Clearance Direct Vent Gas Fireplace
Model P121/P131-NG2 P121/P131-LP2
Fuel Type Natural Gas Propane
Minimum Supply Pressure 5” W.C. (1.25 kPa) 12” W.C. (3.00 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)
Orifice Size #31 DMS #50 DMS
Minimum Input 20,500 BTU/h (6.01 kW) 20,600 BTU/h (6.04 kW)
Maximum Input 40,000 BTU/h (11.72 kW) 39,000 BTU/h (11.43 kW)
Vent Sizing 4” Inner / 6-5/8” Outer 4” Inner / 6-5/8” Outer
P
Gas Line
Inlet
Electrical
Inlet BACK
N
O
M
A
D
C
G
E
B
F
P121 See Thru P131 Pier
P121RC Right Corner P121LC Left Corner
Unit Dimensions Description P121 P121LC/RC P131
A Front Face Width 43-1/2”
(1105mm)
41-1/2”
(1054mm)
41-1/2”
(1054mm)
B Total Firebox Width 46-1/4”
(1175mm)
44-1/2”
(1130mm)
44-1/2”
(1130mm)
C Front Face Height 36” (914mm) 36” (914mm) 36” (914mm)
D Height w/ Standoff 42” (1067mm) 42” (1067mm) 42” (1067mm)
E Unit Depth 25” (635mm) 26-13/16”
(681mm) 25” (635mm)
F Top Offset Depth 21-1/8”
(537mm)
21-1/8”
(537mm)
21-1/8”
(537mm)
G Inset to Standoff 4-3/4”
(121mm)
4-3/4”
(121mm) 3” (76mm)
H
I
J
K
Combustible
Material
3” Extension
Trim
Non-Combustible
Material *
Top of
Unit
8”
Greyed out framing will not apply to all units.
Please refer to the manual.
L
Framing Dimensions Description P121 P121LC/RC P131
H Framing Width 46-3/4”
(1187mm)
45”
(1143mm)**
45”
(1143mm)**
I** Framing Height ** 42-1/2”
(1080mm)
42-1/2”
(1080mm)
42-1/2”
(1080mm)
J** Framing Depth** 25” (635mm)** 26-13/16”
(681mm) 25” (635mm)**
K Vent Centerline Height 42-13/16” (1072mm)
L Framed Chase Ceiling 48-1/4” (1226mm)
M Electrical Inlet Height 2” (51mm) 2” (51mm) 2” (51mm)
N Electrical Inlet Inset 11-3/8”
(289mm)
13-5/16”
(338mm)
11-3/8”
(289mm)
O Gas Connection Height 1-11/16”
(43mm)
1-11/16”
(43mm) 1-5/8” (41mm)
P Gas Connection Inset 11-1/2”
(292mm)
11-1/2”
(292mm)
11-1/2”
(292mm)
** Refer to the manual for variations effected by finishing material
thickness.
P121-P131 Gas Fireplace
If the provided 3” extension trim is not installed the P121(LC/RC)/
P131 must be installed with non-combustible facing up to 8” above
the fireplace. Otherwise combustible facing may be used above the
extension trim.
Approved Venting Systems
Flex Vent Systems: FPI AstroCap™ Flex Vent
Rigid Pipe Vent Systems: Simpson Dura-Vent® Direct Vent GS
American Metal Products Ameri Vent
Security Secure Vent®
Selkirk Direct-Temp.
Please refer to Page 11 (Exterior Vent Terminations)
for additional guidelines on vent locations.
69June 2007 Regency Product Specifications Book
Gas Fireplaces
Gas Fireplaces

Framing and Finishing
1) Determine the total thickness of facing material (e.g. drywall plus
ceramic tiles) to allow the finished surface to be flush with the front
of the unit. Total facing thickness can vary from 1/2” (13mm) to 1-¼”
(32mm) thick.
2) Frame in the enclosure for the unit with framing material.
3) For exterior walls, insulate the enclosure to the same degree as
the rest of the house, apply vapor barrier and drywall, as per local
installation codes. (Do not insulate the fireplace itself.)
4) The top of the unit must not be closer than 36” (990mm) to the
ceiling.
5) Combustible material may be brought up to the top and
sides of the unit and be covered with ceramic tiles, bricks,
rock or other suitable combustible finishing materials.
Note: The unit does not have to be completely enclosed in a
chase. The clearance on top of the unit is 0” to the standoffs
so combustible building materials can be laid directly on top
of the standoffs. You must maintain proper clearances from
the vent to combustible materials (See Below).
6) Use metal studs for framing where the minimum clearance from
the vent to combustible material cannot be maintained.
Drywall
Mantel Clearances
2
0
12 64
810
0
Side View
Top of
Unit
12" (305mm)
3 ½" (89mm)
A
Standoff
B
C
Header
3” Extension Trim
Mantel Clearances ABC
Front 36” (914mm) 7” (178mm) 3” (76mm)
P121-P131 Gas Fireplace
Combustible Mantels
Because of the extreme heat this fireplace 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: If desired 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.
Note: If the fireplace is installed
without the 3” Extension Trim,
the facing material must be
non combustible up to 8”
above the unit.
36"min.
(914mm)
36"min.
(914mm)
36"min. (914mm)
Parallel Wall Clearances
Unless otherwise stated the clearances listed below are Minimum
distances to combustible materials. Unit pictured is a P131
Parallel Wall Clearances P121(LC/RC)/131
Min distance from glass to a parallel wall 36” (914mm)
WARNING
Failure to maintain required clearances is a major cause of
chimney related fires. Installation of this fireplace must comply
with these clearances.
Clearance: Dimension Measured From:
A: Mantel Height 3” (76mm) Minimum (Additional on this page)
B: Sidewall 0” (0mm) Side of installed front
3” (76mm) On P121-2 See-Thru
3” clearance opposite vent.
C: Ceiling 36” (914mm) Top of installed unit
D: Mantel Depth 12” (305mm) Maximum (Additional on this page)
E: Alcove Width See Parallel Wall Clearances.
F: Alcove Depth 36” (914mm) Front to back wall (Maximum)
Top of Hearth must not be higher than the base of the firebox.
Vent Clearances Clearance Dimension
Horizontal - Top 2-1/2” (64mm)
Horizontal - Side 1-1/2” (38mm)
Horizontal - Bottom 1-1/2” (38mm)
Vertical 1-1/4” (32mm)
E
B
B
A
C
D
F
Clearance Requirements
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Gas Fireplaces
Gas Fireplaces

Regency Direct Vent System (Flex)
Horizontal Terminations Only
These venting systems, in combination with the P121/P131 Direct Vent
Gas Fireplace, have been tested and listed as a direct vent heater system
by Warnock Hersey. The location of the termination cap must conform
to the requirements in the Vent Terminal Locations diagram.
FPI Direct Vent (Flex) System Termination Kits include all the parts
needed to install the P42 using a flexible vent.
FPI Kit # Length Contains:
#946-513 2 Feet 1) 6-5/8” flexible liner (Kit length)
2) 4” flexible liner (Kit length)
3) spring spacers (3)
4) thimble (2)
5) AstroCap termination cap (1)
6) screws (12)
7) tube of Mill Pac (1)
8) plated screws (8)
9) S.S. screws #8 x 1-1/2” drill point, (4)
#946-515 4 Feet
#946-516 10 Feet
Notes:
1) Liner sections should be continuous without any joints or seams.
2) Only Flex pipe purchased from Regency may be used for Flex
installations.
3) Horizontal sections must be supported every 3 feet.
P121-P131 Gas Fireplace
Snorkel Terminations
Snorkel Terminations:
For installations requiring a vertical rise on the exterior of the building,
14-inch and 36-inch tall Snorkel Terminations and the Riser Vent are
available. Follow the same installation procedures as used for standard
Horizontal Termination. NEVER install the snorkel upside down.
Below Grade Snorkel Installation (Dura-Vent Only)
If the Snorkel Termination must be installed below grade, i.e. basement
application, proper drainage must be provided to prevent water from
entering the Snorkel Termination. Refer to Rigid Pipe Installation
instructions for details. Do not attempt to enclose the Snorkel within the
wall, or any other type of enclosure.
Dura-Vent
Snorkel
Min. 12"*
(305mm)
Alternate Horizontal
Termination Caps
Alternate:
Horizontal
Riser Vent
Terminal
Part# 640-530/P
Riser Vent
Termination
Min. 6-1/4"*
(159mm)
Min. 12"*
(305mm)
Adequate
drainage
Window
Well
Gravel
Dura-Vent
Snorkel
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Gas Fireplaces
Gas Fireplaces

Rigid Pipe
Adapter
1-1/2”
(38mm)
45 Elbow
o
Venting Arrangements - Vertical
Terminations
Rigid Pipe System
(Propane & Natural Gas)
The P121 /131 is approved for a maximum 35 ft. straight vertical, with
Rigid Pipe vent systems for Propane and Natural Gas.
• Vent must be supported at offsets.
• Horizontal sections must be supported every 3 feet.
• Firestops are required at each floor level and whenever
passing through a wall.
• Maintain clearances to combustible materials.
• Minimum of 1’ pipe section between elbows.
Note: Must use optional flue adapter when using Rigid Pipe (Part
# 510-994).
Maximum 35'(10.7m)
Minimum 6' 6”(2.0m)
45° Elbow
Rigid Pipe Adapter
Part # 510-994
Vertical Venting with One (1) 90° Elbow
Two 45° elbows = One 90° elbow
Option V H Maximum total pipe: length, of
all sections, must not exceed
37 feet.
Total horizontal sections must not
exceed 8 feet.
Minimum of 1 foot between 90°
elbows is required.
A) 1’ Min. 2’ Max.
B) 2’ Min. 4’ Max.
C) 3’ Min. 6’ Max.
D) 4’ Min. 8’ Max.
IMPORTANT
When installing this unit vertically, the 45˚ elbow when installed in
conjunction with the Rigid Pipe Adapter will protrude past the unit 1-½”
(38mm) when measured from the rear standoffs.
Note: A 1-¼” (32mm) clearance from the elbow must also be
maintained.
P121-P131 Gas Fireplace
Rigid Pipe Venting
Horizontal or Vertical Terminations
Pipe Length
Vertical
Terminal
Storm Collar
Part # 953
Flashing
943 or 943S
Ceiling Firestop
(Part # 963)
Pipe
Length
Adj.Pipe Length
11" - 14-5/8"
90 Elbow
o
Horizontal
Termination Cap
Part# 946-523/P
Wall Thimble
(Part # 942)
(Required in
Canada)
Vinyl Siding
Standoff (Optional)
(Part #950)
Rigid Pipe Adapter
(Part #510-994)
45 Elbow
o
Alternate Horizontal
Termination Caps
Alternate:
Horizontal
Riser Vent
Terminal
Part# 640-530/P
72 June 2007 Regency Product Specifications Book
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Gas Fireplaces

Vertical Venting with Two (2) 90° Elbows
- Initial vertical section.
Two 45° elbows = One 90° elbow
Option V+ V1 H Maximum total pipe: length, of
all sections, must not exceed
37 feet.
Total horizontal sections must
not exceed 17 feet.
Minimum of 1 foot between
90° elbows is required.
A) 1’ Min. 4’ Max.
B) 2’ Min. 6’ Max.
C) 3’ Min. 9’ Max.
D) 4’ Min. 12’ Max.
E) 5’ Min. 15’ Max.
E) 6’ Min. 17’ Max.
Vertical Venting with Two (2) 90° Elbows
- Initial horizontal section.
Two 45° elbows = One 90° elbow
Option H + H1 V Maximum total pipe: length, of
all sections, must not exceed
37 feet.
Total horizontal sections must
not exceed 8 feet.
Minimum of 1 foot between
90° elbows is required.
A) 2’ Max. 1’ Min.
B) 4’ Max. 2’ Min.
C) 6’ Max. 3’ Min.
D) 8’ Max. 4’ Min.
Vertical Venting with Three (3) 90°
Elbows - Initial vertical section.
Two 45° elbows = One 90° elbow
Option V+ V1 H + H1 Maximum total pipe: length, of
all sections, must not exceed
37 feet.
Total horizontal sections must not
exceed 12 feet.
Minimum of 1 foot between 90°
elbows is required.
A) 2’ Min. 3’ Max.
B) 3’ Min. 6’ Max.
C) 4’ Min. 9’ Max.
D) 5’ Min. 12’ Max.
Vertical Venting with Three (3) 90°
Elbows - Initial horizontal section.
Two 45° elbows = One 90° elbow
Option V+ V1 H H + H1 Maximum total pipe: length, of
all sections, must not exceed
37 feet.
Total horizontal sections must
not exceed 12 feet.
Minimum of 1 foot between 90°
elbows is required.
A) 2’ Min. 1’ Max. 2’ Max.
B) 3’ Min. 4’ Max. 5’ Max.
C) 4’ Min. 6’ Max. 8’ Max.
D) 5’ Min. 8’ Max. 12’ Max.
P121-P131 Gas Fireplace
73June 2007 Regency Product Specifications Book
Gas Fireplaces
Gas Fireplaces

Horizontal Venting with One (1) 90°
Elbow
Two 45° elbows = One 90° elbow
Option V H Maximum total pipe: length, of
all sections, must not exceed
37 feet.
Total horizontal sections must
not exceed 17 feet.
Minimum of 1 foot between
90° elbows is required.
A) 1’ Min. 3’ Max.
B) 2’ Min. 6’ Max.
C) 3’ Min. 9’ Max.
D) 4’ Min. 12’ Max.
E) 5’ Min. 15’ Max.
F) 6’ Min. 17’ Max.
P121-P131 Gas Fireplace
Venting Arrangements - Horizontal
Terminations
This diagram shows allowable venting configurations using one 45°.
Note: Must use optional flue adapter (Part # 770-994) when using
Rigid Pipe.
• Maintain clearances to combustibles.
• Horizontal vent must be supported every 3 feet.
• Firestops are required at each floor level and whenever passing
through a wall.
A vent guard should be used whenever the termination is lower than the
specified minimum or as per local codes.
Note: FPI Direct Vent System (Flex) is only approved for horizontal
terminations.
74 June 2007 Regency Product Specifications Book
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Gas Fireplaces

Horizontal Venting with Two (2) 90°
Elbows - Initial vertical section.
Two 45° elbows = One 90° elbow
Option V H+ H1 Maximum total pipe: length, of
all sections, must not exceed
37 feet.
Total horizontal sections must
not exceed 15 feet.
Minimum of 1 foot between
90° elbows is required.
A) 1’ Min. 2’ Max.
B) 2’ Min. 5’ Max.
C) 3’ Min. 8’ Max.
D) 4’ Min. 11’ Max.
E) 5’ Min. 14’ Max.
F) 6’ Min. 15’ Max.
Horizontal Venting with Two (2) 90°
Elbows - Initial horizontal section.
Two 45° elbows = One 90° elbow
Option H V H + H1 Maximum total pipe: length, of
all sections, must not exceed
37 feet.
Total horizontal sections must
not exceed 12 feet.
Minimum of 1 foot between
90° elbows is required.
A) 1’ Max. 1’ Min. 3’ Max.
B) 3’ Max. 2’ Min. 6’ Max.
C) 5’ Max. 3’ Min. 9’ Max.
D) 8’ Max. 5’ Min. 12’ Max.
Horizontal Venting with Three (3) 90°
Elbows - Initial vertical section.
Two 45° elbows = One 90° elbow
Option V+ V1 H + H1 Maximum total pipe: length,
of all sections, must not
exceed 37 feet.
Total horizontal sections
must not exceed 12 feet.
Minimum of 1 foot between
90° elbows is required.
A) 2’ Min. 3’ Max.
B) 3’ Min. 6’ Max.
C) 4’ Min. 9’ Max.
D) 5’ Min. 12’ Max.
Horizontal Venting with Three (3) 90°
Elbows - Initial horizontal section.
Two 45° elbows = One 90° elbow
Option H V H + H1 + H2 Maximum total pipe: length, of
all sections, must not exceed
37 feet.
Total horizontal sections must
not exceed 12 feet.
Minimum of 1 foot between
90° elbows is required.
A) 1’ Max. 2’ Min. 3’ Max.
B) 3’ Max. 3’ Min. 6’ Max.
C) 5’ Max. 4’ Min. 9’ Max.
F) 7’ Max. 5’ Min. 12’ Max.
P121-P131 Gas Fireplace
75June 2007 Regency Product Specifications Book
Gas Fireplaces
Gas Fireplaces