Hearth & Home B41L-AU User manual

1
Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
Models:
Installation Manual
Installation and Appliance Setup
INSTALLER: Leave this manual with party responsible for use and operation.
OWNER: Retain this manual for future reference.
NOTICE: DO NOT discard this manual!
• DO NOT store or use gasoline or other am-
mable vapors and liquids in the vicinity of this
or any other appliance.
• What to do if you smell gas
- DO NOT try to light any appliance.
- DO NOT touch any electrical switch. DO
NOT use any phone in your building.
- Leave the building immediately.
- Immediately call your gas supplier from
a neighbor’s phone. Follow the gas sup-
plier’s instructions.
- If you cannot reach your gas supplier, call
the re department.
• Installation and service must be performed
by a qualied installer, service agency, or the
gas supplier.
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly
could result in serious injury, death, or
property damage.
DANGER
HOT GLASS WILL
CAUSE BURNS.
DO NOT TOUCH GLASS
UNTIL COOLED.
NEVER ALLOW CHILDREN
TO TOUCH GLASS.
A barrier designed to reduce the risk of
burns from the hot viewing glass is provided
with this appliance and shall be installed for
the protection of children and other at-risk
individuals.
B41L-AU
NOTE:NOTE: NOT INTENDED FOR
FIREPLACE INSERT.
Ref No: GMK10636
AS/NZS 5263.1.8
DO NOT PLACE ARTICLES ON OR AGAINST THIS APPLIANCE.
DO NOT USE OR STORE FLAMMABLE MATERIALS NEAR THIS APPLIANCE.
DO NOT SPRAY AEROSOLS IN THE VICINITY OF THIS APPLIANCE WHILE IT IS IN OPERATION.
DO NOT MODIFY THIS APPLIANCE.

2Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
 = Contains updated information.
Safety Alert Key:
• DANGER! Indicates a hazardous situation which, if not avoided will result in death or serious injury.
• WARNING! Indicates a hazardous situation which, if not avoided could result in death or serious injury.
• CAUTION! Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
• NOTICE: Used to address practices not related to personal injury.
Note: The term “recommend” or “recommended” does not indicate a requirement. It is a best practice suggested by Hearth
& Home Technologies®. Failure to perform the recommended task will not result in a safety concern.
Table of Contents
Installation Standard Work Checklist ....................3
1 Product Specic and Important Safety Information
A. Appliance Certication ............................4
B. Glass Specications ..............................4
C. Gas Pressure Requirements .......................4
D. High Altitude Installations ..........................5
E. Non-Combustible Materials Specication. . . . . . . . . . . . . . 5
F. Combustible Materials Specication .................5
G. Electrical Codes .................................5
2 Getting Started
A. Design and Installation Considerations ...............6
B. Good Faith Wall Surface/TV Guidelines ..............6
C. Tools and Supplies Needed ........................ 7
D. Inspect Appliance and Components ..................7
3 Framing and Clearances
A. Appliance/Decorative Front Dimension Diagrams .......8
B. Clearances to Combustibles ......................10
C. Constructing the Appliance Chase ..................15
4 Termination Location and Vent Information
A. Vent Termination Minimum Clearances ..............16
B. Chimney Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
C. Approved Pipe .................................18
D. Use of Elbows ................................. 18
E. Measuring Standards ............................19
F. Vent Diagrams .................................20
5 Vent Clearances and Framing
A. Pipe Clearances to Combustibles ..................30
B. Wall Penetration Framing/Firestops .................30
C. Ceiling Firestop/Floor Penetration Framing ...........31
D. Install Attic Insulation Shield .......................31
6 Appliance Preparation
A. Vent Collar Preparation ..........................32
B. Prepare For Heat Management ....................32
C. Securing and Leveling the Appliance ................ 33
D. Non-Combustible Material Installation ...............34
7 Venting and Chimneys
A . Assemble Vent Sections .........................35
B. Assemble Slip Sections ..........................36
C. Secure the Vent Sections .........................36
D. Disassemble Vent Sections .......................37
E. Vertical Termination Requirements ..................38
F. Horizontal Termination Requirements ...............39
8 Electrical Information
A. General Information .............................40
B. Wiring Requirements ............................41
9 Gas Information
A. Fuel Conversion ................................42
B. Gas Pressure ..................................42
C. Gas Service Access .............................42
D. Gas Connection ................................44
E. High Altitude Installations .........................44
F. Air Shutter Setting ..............................44
10 Finishing
A. Facing Material .................................45
B. Non-Combustible Board and Drywall Installation .......46
C. Mantel and Wall Projections .......................48
D. Decorative Barrier Front Finishing ..................50
11 Appliance Setup
A. Remove the Shipping Materials ....................54
B. Clean the Appliance .............................54
C. Install the Glass Refractory (Optional) ..............54
D. Install Log Set or Other Optional Media - Driftwood Logs -
Stones .......................................54
E. Fixed Glass Assembly Removal and Replacement .....57
F. Install Decorative Barrier Front. . . . . . . . . . . . . . . . . . . . . 58
12 Reference Materials
A. Vent Components Diagrams ......................59
B. Accessories ...................................63



3
Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
Installation Standard Work Checklist
Customer:
Lot/Address:
Model: B41L-AU
Date Installed:
Location of Fireplace:
Installer:
Dealer/Distributor Phone #
Serial #:
Comments: Further description of the issues, who is responsible (Installer/ Builder/ Other Trades, etc) and corrective
action needed _____________________________________________________________________________________
_________________________________________________________________________________________________
_________________________________________________________________________________________________
Comments Communicated to party responsible ____________________ by ______________________on ___________
(Builder / Gen. Contractor/) (Installer) (Date)
Appliance Install YES IF NO, WHY?
Veried that the chase is insulated and sealed. (Pg. 16) ___________________________
Required non-combustible board is installed. (Pg. 35) ___________________________
Veried clearances to combustibles. (Pg. 10) ___________________________
Fireplace is leveled and secured. (Pg. 34) ___________________________
Venting/Chimney Section 7 (Pg 36-40)
Venting conguration complies to vent diagrams. ___________________________
Venting installed, locked and secured in place with proper clearance. ___________________________
Firestops installed. ___________________________
Attic insulation shield installed. ___________________________
Exterior wall/Roof ashing installed and sealed. ___________________________
Terminations installed and sealed. ___________________________
Electrical Section 8 (Pg 41-42)
Unswitched power (220-240 VAC) provided to the appliance. ___________________________
Switch wires properly installed. ___________________________
Gas Section 9 (Pg 43-45)
Proper appliance for fuel type. ___________________________
Was a conversion performed? ___________________________
Leak check performed and inlet pressure veried. ___________________________
Veried proper air shutter setting for installation type. ___________________________
Finishing Section 10 (Pg 46-54)
Combustible materials not installed in non-combustible areas. ___________________________
Veried all clearances meet installation manual requirements. ___________________________
Mantels and wall projections comply with installation manual requirements. ___________________________
Appliance Setup Section 11 (Pg 55-59)
All packaging and protective materials removed (inside & outside of appliance). ___________________________
Logs and optional media, and glass refractory installed correctly. ___________________________
Fan deector brackets installed and Glass assembly installed and secured. ___________________________
Accessories installed properly. ___________________________
Mesh, doors, or decorative barrier front properly installed. ___________________________
Manual bag and all of its contents are removed from inside/under
the appliance and given to party responsible for use and operation. ___________________________
Started appliance and veried no gas leaks exist. ___________________________
2570-982C 7/20
= Contains updated information.
Hearth & Home Technologies recommends the following:
• Photographing the installation and copying this checklist for your le.
• That this checklist remain visible at all times on the appliance until the installation is complete.
This standard work checklist is to be used by the installer in conjunction with, not instead of, the instructions contained in this
installation manual.
WARNING! Risk of Fire or Explosion! Failure to install appliance according to these instructions could
lead to a re or explosion. Install ONLY components and accessories approved by Hearth & Home
Technologies. Upapproved components and accessories could cause appliance to overheat.
ATTENTION INSTALLER:
Follow this Standard Work Checklist

4Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
A. Appliance Certication
NOT INTENDED FOR USE AS A PRIMARY HEAT SOURCE.
This appliance is tested and approved as either supplemen-
tal room heat or as a decorative appliance. It should not be
factored as primary heat in residential heating calculations.
11 Product Specic and Important Safety Information
C. Gas Pressure Requirements
Pressure requirements for B41L-AU replaces are shown
in table below.
Two taps are provided on the right hand side of the gas
control for a test gauge connection to measure the inlet
and outlet pressures.
The replace and its individual shut-off valve must be dis-
connected from the gas supply piping system during any
pressure testing of the system at test pressures in excess
of 3.4 kPa.
If the replace must be isolated from the gas supply pip-
ing system by closing an individual shut-off valve, it must
be of the handle-less type.
MODEL: B41L-AU
LABORATORY: IAPMO OCEANA
TYPE: Direct Vent Heater
STANDARD: AS/NZS 5263.1.8
The Hearth & Home Technologies gas appliances discussed
in this Installer’s Guide have been tested to certication
standards and listed by the applicable laboratories.
This appliance must be installed in accordance with the AS/
NZS 5601.1 rules in force.
Gas types only through eld conversions.
* The allowable Outlet (Manifold) Gas Pressure ranges are: Natural Gas 0.63 - 0.95 kPa (0.76 kPa nominal) and Propane
2.37 - 2.61 kPa (2.40 kPa nominal). Certication testing setpoint values are shown.
NOTE: An inline fuel pressure regulator is recom-
mended to limit NG inlet pressure to 2.49 kPa, and
Propane inlet pressure to 3.25 kPa, to ensure optimum
product performance. The inline fuel pressure regula-
tor may be needed if any of the following symptoms
exist: pilot jetting, a highly visible pilot ame, ame
variation, etc. The inline pressure regulator should
be installed in the gas line upstream of the appliance
gas valve either at the appliance or in the utility room.
Final main and manifold gas pressure must be tested
with inline pressure regulator installed.
Natural Gas Propane
Inlet Gas Pressure 1.13 - 3.40 kPa 2.75 - 3.40 kPa
* Outlet (Manifold) Gas Pressure 0.76 kPa 2.40 kPa
Nominal Gas Consumption 20.0 MJ/h 20.0 MJ/h
Burner Injector #44 DMS (2.18 mm) #55 DMS (1.32 mm)
Pilot Injector Ø .023 (.584 mm) Ø .014 (.356 mm)
B. Glass Specications
Hearth & Home Technologies appliances manufactured
with tempered glass may be installed in hazardous lo-
cations such as bathtub enclosures as dened by the
Consumer Product Safety Commission (CPSC). The
tempered glass has been tested and certied to the re-
quirements of ANSI Z97.1 and CPSC 16 CFR 1202
(Safety Glazing Certication Council SGCC# 1595 and
1597. Architectural Testing, Inc. Reports 02-31919.01
and 02-31917.01).

5
Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
D. High Altitude Installations
NOTICE: If the heating value of the gas has been reduced,
these rules do not apply. Check with your local gas utility
or authorities having jurisdiction.
When installing above 2000 ft. (610 m) elevation:
Reduce input rate 4% for each 1000 ft. (305 m) above
2000 ft. (610 m).
E. Non-Combustible Materials Specication
Material which will not ignite and burn. Such materials are
those consisting entirely of steel, iron, brick, tile, concrete,
slate, glass or plasters, or any combination thereof.
Materials that are reported as passing ASTM E 136,
Standard Test Method for Behavior of Materials in a
Vertical Tube Furnace at 750 ºC (1382 °F) shall be con-
sidered non-combustible materials.
F. Combustible Materials Specication
Materials made of or surfaced with wood, compressed pa-
per, plant bers, plastics, or other material that can ignite
and burn, whether ame proofed or not, or plastered or
unplastered shall be considered combustible materials.
G. Electrical Codes
All electrical safety testing has been done following the EN
60335-2-102 standard. Local codes apply.

6Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
22 Getting Started
A. Design and Installation Considerations
Hearth & Home Technologies direct vent gas appliances
are designed to operate with all combustion air siphoned
from outside of the building and all exhaust gases ex-
pelled to the outside. No additional outside air source is
required.
Installation MUST comply with local, regional, state and
national codes and regulations. Consult insurance carrier,
local building inspector, re ofcials or authorities having
jurisdiction over restrictions, installation inspection and
permits.
Before installing, determine the following:
• Where the appliance is to be installed.
• The vent system conguration to be used.
• Gas supply piping.
• Electrical wiring requirements.
• Framing and nishing details.
• Whether optional accessories—devices such as a wall
switch or remote control—are desired.
Improper installation, adjustment, alteration, service or
maintenance can cause injury or property damage. For
assistance or additional information, consult a qualied
service technician, service agency or your dealer.
B. Good Faith Wall Surface/TV Guidelines
Installation and service of this appliance should be performed by
qualied personnel. Hearth & Home Technologies recommends
HHT Factory Trained or NFI certied professionals.
Figure 2.1 Good Faith Wall Surface Temperatures Above Appliance
MEASUREMENTS FROM
TOP EDGE OF THE OPENING
6 in.
18 in.
24 in.
30 in.
36 in.
48 in.
TO CEILING
42 in.
12 in.
194 °F
APPLIANCE FRONT
FIREPLACE
OPENING
142°F
119°F
110°F
105°F
101°F
98°F
95°F
(90 °C)
(61 °C)
(48 °C)
(43 °C)
(41 °C)
(38 °C)
(37 °C)
(35 °C)
(152 mm)
(305 mm)
(457 mm)
(610 mm)
(762 mm)
(914 mm)
(1067 mm)
(1219 mm)
NOTICE: Surface temperatures listed above are taken with
a temperature measuring probe as prescribed by the test
standard used for appliance certication. Temperatures
on walls or mantels taken with an infrared thermometer
may yield increased temperatures of up to 30 °F (17 °C) or
more depending on the thermometer settings and material
characteristics being measured. Use appropriate nishing
materials that are able to withstand these conditions. For
additional nishing guidelines, see Section 10.
If installing a television (TV) above the appliance, see
Section 3 of the appliance Owner’s Manual.
Figure 2.2 Good Faith Wall Surface Temperatures Above
Appliance with Passive Heat Kit Installed
MEASUREMENTS FROM
TOP EDGE OF THE OPENING
18 in.
24 in.
30 in.
36 in.
TO CEILING
12 in.
145°F
APPLIANCE FRONT
FIREPLACE
OPENING
120°F
109°F
104°F
95°F
95°F
OPTIONAL PASSIVE HEAT KIT INSTALLED
(63 °C)
(49 °C)
(43 °C)
(40 °C)
(35 °C)
(35 °C)
6 in.
(152 mm)
(305 mm)
(457 mm)
(610 mm)
(762 mm)
(914 mm)

7
Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
C. Tools and Supplies Needed
Before beginning the installation be sure that the following
tools and building supplies are available.
Hand Tools Tape measure
Level Framing material
Manometer Framing square
Voltmeter Electric drill and bits -1/4 in.(6.mm)
Plumb line Safety glasses/Gloves
Wrenches Reciprocating saw
1/4 in. (6 mm) nut driver
Non-corrosive leak check solution
1/2 - 3/4 in.(13-19 mm) length, #6 or #8 Self-drilling
screws
Caulking material (300 ºF (149 ºC) minimum continuous
exposure rating)
D. Inspect Appliance and Components
WARNING! Risk of Fire or Explosion! Damaged parts
could impair safe operation. DO NOT install damaged, in-
complete or substitute components. Keep appliance dry.
WARNING! Risk of Fire, Explosion or Electric Shock!
DO NOT use this appliance if any part has been under
water. Call a qualied service technician to inspect the
appliance and to replace any part of the control system
and/or gas control which has been under water.
• Carefully remove the appliance and components from
the packaging.
• The vent system components and decorative barrier
fronts may be shipped in separate packages.
• If packaged separately, the log set and appliance grate
must be installed.
• Report to your dealer any parts damaged in shipment.
Hearth & Home Technologies disclaims any responsibility
for, and the warranty will be voided by, the following actions:
• Installation and use of any damaged appliance or vent
system component.
• Modication of the appliance or vent system.
• Installation other than as instructed by Hearth & Home
Technologies.
• Improper positioning of the logs/media (as applicable) or
the glass assembly.
• Installation and/or use of any component part not approved
by Hearth & Home Technologies.

8Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
Location Inches Millimeters
M16-3/4 426
N6-5/8 168
O32-3/8 822
P2-3/16 56
Q6 152
R17-1/4 438
S25-7/8 657
T43-1/2 1105
U6-1/8 156
V7-1/2 191
W10-3/8 264
X7-3/4 197
Location Inches Millimeters
A41 1041
B36 914
C32-1/4 819
D15-1/4 387
E33-11/16 856
F3-1/2 89
G7 178
H46-1/2 1181
I9-13/16 249
J17-3/4 451
K1/2 13
L30-3/4 781
Appliance Dimensions Table
U
Ø
HEAT MANAGEMENT
SYSTEMS ACCESS
W
O
V
GAS LINE
ACCESS
Q
P
C
X
S
T
B
A
LEFT VIEW FRONT VIEW RIGHT VIEW
E
D
F
G
ELECTRICAL
ACCESS
H
M
R
N Ø
J
K
I
TOP VIEW
L
33 Framing and Clearances
A. Appliance/Decorative Front Dimension Diagrams
Dimensions are actual appliance dimensions. Use for reference only.
For framing dimensions and clearances refer to Section 5.
Figure 3.1 Appliance Dimensions

9
Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
CFTF DECORATIVE BARRIER FRONTS
A B C D E FG H
B41L-AU CFTF-36 in. 33-3/16 14-1/8 38-1/8 6-7/8 9-13/16 19-7/8 26-7/8 25-3/16
mm 843 359 968 175 249 505 683 640
D
G
E
C
B
A
F
H
Dimensions are actual decorative barrier front dimensions. Use for reference only.
Figure 3.2 Decorative Barrier Front Dimensions - CFTF
IMPORTANT! This replace requires an installed decorative barrier front to prevent direct contact with the
hot viewing glass. DO NOT operate the replace with the barrier removed.
Decorative barrier front must be ordered at time of replace purchase. If decorative barrier front is not
present, contact dealer.
Note: See Section 10 for hearth, mantel and nishing requirements.

10 Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
B. Clearances to Combustibles
When selecting a location for the appliance it is important
to consider the required clearances to walls. See Figure
3.3.
WARNING! Risk of Fire or Burns! Provide adequate
clearance around air openings and for service access.
Due to high temperatures, the appliance should be lo-
cated out of trafc and away from furniture and draperies.
NOTICE: Illustrations reect typical installations and are
FOR DESIGN PURPOSES ONLY. Illustrations/diagrams
are not drawn to scale. Actual installation could vary due
to individual design preference.
It is important to follow the framing and nishing instruc-
tions step by step to ensure proper placement of replace
in the surrounding framing/nishing materials.
Figure 3.3 Appliance Locations
A
E
A
CTOP VENT
ONE 900ELBOW
ALCOVE
INSTALLATION
D*
TOP VENT
ONE 90° ELBOW
B
F
Refer to Section 10.C for mantel and wall
projection information.
Consider the mantel or cabinet system to be
installed and comply with the necessary
requirements for elevated hearth. Refer to
instructions included with cabinet system.
18 in. (457 mm) required
when Passive Heat Side
Discharge Kit is installed.
1/2 IN.
A B C D E F
B41L-AU Inches 47-1/2 42 66 See Section 10.C for Alcove Installation
(Mantel and Wall Projection).
15-3/4 17-1/4
Millimeters 1207 1067 1676 400 438

11
Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
Framing
This appliance is designed to be recessed into combus-
tible framing with non-combustible material pre-installed
on top and side. Drywall or combustible materials (mini-
mum 10 mm thick) are designed to contact the non-com-
bustible material/appliance as called out in Section 10
Finishing.
This appliance has been thoroughly tested to minimize
drywall cracking and/or the protrusion of screws “screw
pops" when framed as shown above. Note: Refer to Section 10 for important information
related to facing, drywall specications and decorative
front information.
* Adjust framing dimensions for interior chase sheathing (such as sheetrock)
** If appliance is installed off of oor, maintain required clearances to combustibles. Construct platform in accordance with local building codes.
MINIMUM FRAMING DIMENSIONS*
Model
Size
A B C D E F G H I J K
Rough
Opening
(Vent Pipe)
Rough
Opening
(Height)
Rough
Opening
(Depth)
Rough
Opening
(Width)
Clearance
to Room
Ceiling
Combustible
Floor
Minimum
Hearth
Required
Behind
Appliance
Sides of
Appliance
Front of
Appliance
Clearance
to Ceiling
B41L-AU
in. 8-5/8 32-3/4 17-3/4 42 31 0 0 1/2 1/2 36 56-7/8
mm 219 832 451 1067 787 0 0 13 13 914 1445
F
G
I
H
E
MEASURE FROM TOP
OF APPLIANCE OPENING
J
K
Note: Header MUST be installed on end as shown in the diagram.
NOTE: E & K dimensions will change if Passive Heat option is installed.
Reference the instructions included with the Passive Heat Kit.
A
B
C
D
HEADER: TWO 2 X 4’S OR 2 X 6’S
(90 X 35 mm for AU) INSTALLED ON END
KING STUD
JACK (TRIMMER) STUD
APPLIANCE MAY BE
INSTALLED OFF
OF FLOOR**
Framing should be done in a manner similar to framing a
window or door: double - 2 x 4 / 2 x 6 (90 x 35 mm for AU)
as a Header for horizontal strength and untilizing Jack
or Trimmer Stud fastened to the King Studs for vertical
strength.
If elevating the appliance, the base of the unit should also
be constructed in a similar manner to prevent settling.
Figure 3.4 Clearances to Combustibles

12 Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
WARNING! Risk of Fire! Wire mesh required on
bottom of discharge opening (Dimension A) when
nished discharge opening is greater than 3 in. (76
mm). Secure mesh to top of framing.
ROOM CEILING
1-1/2 IN. (2 X 4 FRAMING)
2 IN. MIN.
TV
1/2 IN. X 1/2 IN.
(13 mm x 13 mm)
WIRE MESH**
CHASE CEILING REQUIRED
WITHIN 3 IN. (76 mm) OF TOP
OF OPENING
WIRE MESH**
= PASSIVE HEAT
DISCHARGE OPENING
0-3 IN.
= CHASE CEILING ZONE
(0-76 mm)
(51 mm)
(90 x 35 mm for AU)
WARNING! Risk of Fire! Optional fan may not be
used with passive heat installation.
Figure 3.5 Passive Heat Front Discharge Framing Dimensions With and Without a Trim Kit
FRONT DISCHARGE MINIMUM FRAMING DIMENSIONS
A
B C D E
TRIM KIT*
INSTALLED
(PHTRIM-LINEAR)
NO TRIM
KIT**
Required Height of
Discharge Opening
Height of
Discharge
Opening
Clearance to
Top of
Discharge
Opening
Width of
Discharge
Opening
Clearance to
Top of Discharge
Opening From
Bottom of
Appliance
Clearance from
Bottom of Appliance
to Bottom of
Discharge Opening
B41L-AU
Inches 3-1/2 2 48 36-1/2 73-7/8 71-7/8
millimeters 89 51 1219 927 1876 1826
* Measurement for Trim Kit = 3-1/2 in. (89 mm) + Additional Finishing Material Thickness. Figure 3.6 shows vent cover
dimensions.
** Measurement without Trim Kit = 2 in. (51 mm) + Additional Finishing Material Thickness. If nished discharge opening
height is greater than 3 in.(76 mm), wire mesh is required.
Framing Dimensions - Passive Heat Front Discharge (PH-FRT-LINEAR)
Front Discharge: Air conveyed into the room through one front discharge slot.
CHASE DETAIL
A
D
C
B
APPLIANCE MAY BE INSTALLED
OFF OF FLOOR
E


13
Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
C
D
B
A
SIDE DISCHARGE FRAMING DIMENSIONS
AB C D
Inside Height Inside Width Outside Height Outside Width
PHTRIM-36LINEAR Inches 2-9/16 36-1/2 5-5/8 38-3/8
millimeters 65 927 143 975
Passive Heat Front Discharge (PH-FRT-LINEAR) Trim Kit
Vent Cover Dimensions
Figure 3.6 Passive Heat Front Discharge - Vent Cover Dimensions


14 Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
Figure 3.7 Passive Heat Side Discharge Framing Dimensions
SIDE DISCHARGE FRAMING DIMENSIONS
A B C D E
Height of
Discharge
Opening
Width of
discharge
Opening
Minimum
Clearance to
Discharge Opening
Minimum Clearance
Bottom of Appliance
to Ceiling
Minimum Clearance to
Combustible Materials
B41L-AU Inches 12-1/4 8-3/4 63-5/8 77-3/8 18
millimeters 311 222 1616 1965 457
Framing Dimensions - Passive Heat Side Discharge (PH-SIDE-LINEAR)
WARNING! Risk of Fire! DO NOT place combustible
objects or combustible materials in non-combustible
zone. Appliance and combustible materials will overheat.
E
B
A
D
C
APPLIANCE MAY BE INSTALLED
OFF OF FLOOR
Side Discharge: Air conveyed into the room through two discharge registers,
one on each side of appliance.
ROOM CEILING
1-1/2 IN. (2 X 4 FRAMING)
2 IN. MIN.
TV
1/2 IN. X 1/2 IN.
WIRE MESH**
CHASE CEILING REQUIRED
WITHIN 3 IN. OF TOP OF OPENING
WIRE MESH**
= PASSIVE HEAT
DISCHARGE OPENING
0-3 IN.
= CHASE CEILING ZONE
CHASE DETAIL
WARNING! Risk of Fire! Optional fan may not be
used with passive heat installation.

15
Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
C
A
B
Figure 3.8 Passive Heat Minimum Framing Dimensions Open Top Discharge
OPEN TOP DISCHARGE MINIMUM FRAMING DIMENSIONS
A* B C
Height of Discharge
Opening
Clearance to
Discharge Opening
Width of Discharge
Opening
B41L-AU Inches 2 48 36-1/2
millimeters 51 1219 927
*Mesh screen required for front discharge or open top discharge passive heat installations with discharge
opening of 3 in. (76 mm) or greater.
Framing Dimensions - Passive Heat Open Top Discharge (PH-FRT-LINEAR)
WARNING! Risk of Fire! Mesh screen required on bottom of discharge opening when discharge
opening is greater than 3 in. (76 mm). Secure mesh to top of framing.
Open Top Discharge: Both sides and the top are open allowing air to be conveyed into the room.
WARNING! Risk of Fire! Optional fan may not be
used with passive heat installation.

16 Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
A chase is a vertical box-like structure built to enclose the
gas appliance and/or its vent system. In cooler climates
the vent should be enclosed inside the chase.
NOTICE: Treatment of ceiling restops and wall shield
restops and construction of the chase may vary with the
type of building. These instructions are not substitutes
for the requirements of local building codes. Therefore,
you MUST check local building codes to determine the
requirements to these steps.
NOTICE: When installing a sprinkler head in a replace
chase, it is recommended to use a sprinkler head with a
sprinkler activation temperature classied as Extra High.
Keep sprinkler head away from vent and chimney.
Chases should be constructed and insulated in the same
manner as the thermal envelope of the home based on
the code requirements for that climate zone to prevent air
leakage and draft problems. The chase is an extension of
the building thermal envelope.
To further prevent drafts and air leakage, the wall shield
and ceiling restops should be sealed with caulk with a
minimum of 300 ºF (149 ºC) continuous exposure rating
to seal gaps. Gas line holes and other openings should
be sealed with caulk with a minimum of 300 ºF (149 ºC)
continuous exposure rating or stuffed with unfaced insula-
tion. If the appliance is being installed on a cement surface, a
layer of plywood may be placed underneath to prevent con-
ducting cold up into the room.
NOTICE: Install appliance on hard metal or wood surfaces
extending full width and depth. DO NOT install directly on
carpeting, vinyl, or any combustible material other than
wood.
WARNING! Risk of Fire! Maintain specied air space
clearances to appliance and vent pipe:
• Insulation and other materials must be secured to prevent
accidental contact.
• The chase must be properly blocked to prevent blown
insulation or other combustibles from entering and
making contact with replace or chimney.
• Failure to maintain airspace may cause overheating and
a re.
C. Constructing the Appliance Chase

17
Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
A. Vent Termination Minimum Clearances
Figure 4.1 Minimum Height From Roof To Lowest Discharge
Opening
44 Termination Location and Vent Information
Fire Risk.
Maintain vent clearance to combustibles as
specied.
• DO NOT pack air space with insulation or other
materials.
Failure to keep insulation or other materials away
from vent pipe could cause overheating and re.
WARNING
Figure 4.2 Staggered Termination Caps
Gas, Wood or Fuel Oil
Termination Cap
B
Gas
Termination
Cap **
A *
*
If using decorative cap cover(s), this distance may need to be
increased. Refer to the installation instructions supplied with the
decorative cap cover.
**
A B
6 in.(152 mm) (minimum)
up to 20 in. (508 mm) 18 in. (457 mm)minimum
20 in. (508 mm) and over
0 in. minimum
In a staggered installation with both gas and wood or fuel oil
terminations, the wood or fuel oil termination cap must be
higher than the gas termination cap.
H (MIN.) - MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
VERTICAL
WALL
TERMINATION
CAP
HORIZONTAL
OVERHANG
305 mm
X
ROOF PITCH
IS X/ 305 mm
LOWEST
DISCHARGE
OPENING
510 mm MIN.
610 mm MIN.
Angle H (Min.) mm
0°-26.6° ..........................................................500*
26.6°-30.3° ..........................................................500*
30.3°-33.7° ..........................................................500*
33.7°-36.9° ..........................................................610*
36.9°-39.8° ..........................................................760*
39.8°-42.5° ..........................................................990
42.5°-45.0° ........................................................1220
45.0°-49.4° ........................................................1520
49.4°-53.1° ........................................................1830
53.1°-56.3° ........................................................2130
56.3°-59.0° ........................................................2290
59.0°-60.3° ........................................................2440
*910 mm minimum in snow regions

18 Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
Figure 4.3 Minimum Clearances for Termination
NOTES: 1. All distances are measured vertically or horizontally along the wall to a point in line with the nearest part of the terminal.
2. Prohibited area below electricity meter or fuse box extends to ground level.
3. Flue terminal under covered area:
a) The covered area or recess shall be open on at least two sides.
   b)Fanassistedueapplianceshallhaveatleastonesideopenandtheterminalshallbe
within 500 mm of the opening and discharging in the direction of the opening.
  4. ClearancefromaueterminaltoaLPcylindershallbeaminimumof1meter.
MINIMUM CLEARANCES REQUIRED FOR BALANCED FLUE TERMINALS OR THE FLUE TERMINALS OF OUTDOOR APPLIANCES
Ref. Item Minimum Clearance (mm)
Natural Draft Fan Assisted
a
Below eaves, balconies or other projections
Appliances up to 50 MJ/h input 300 200
b
From the ground or above a balcony
Appliances 32 MJ/h and below 300 355
Appliances from 32 MJ/h to 53 MJ/h 300 410
cFrom a return wall or external corner 500 300
dFrom a gas meter (M) 1000 1000
eFrom an electricity meter or fuse box (P) 500 500
fFrom a drain or soil pipe 150 75
gHorizontally from any building structure (unless appliance approved for closer installation) or obstruction
facing a terminal 500 500
hFromanyotherueterminal,cowl,orcombustionairintake 500 300
j
Horizontallyfromanopenablewindow,door,non-mechanicalairinlet,oranyotheropeningintoabuilding,withtheexceptionofsub-oorventilation
Appliances up to 150 MJ/h input 500 300
All fan assisted appliances in the direction of discharge - 1500
kFrom a mechanical air inlet, including a spa fan 1500 1000
n
Verticallybelowanopenablewindow,non-mechanicalairinletoranyotheropeningintoabuilding,withtheexceptionofSeetablesub-oor
ventilation
For other appliances up to 50 MJ/h input 500 500
B. Chimney Diagram

19
Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
D. Use of Elbows
Diagonal runs have both vertical and horizontal vent as-
pects when calculating the effects. Use the rise for the
vertical aspect and the run for the horizontal aspect. See
Figure 4.4.
Two 45º elbows may be used in place of one 90º elbow.
On 45º runs, one foot of diagonal is equal to 8-1/2 in. (216
mm) horizontal run and 8-1/2 in. (216 mm) vertical run. A
length of straight pipe is allowed between two 45º elbows.
See Figure 4.4.
Figure 4.5 shows the vertical and horizontal offsets for
SLP elbows.
Figure 4.4
Horizontal
Vertical
8-1/2 in.
(216 mm)
8-1/2 in. (216 mm)
12 in.
(305 mm)
Y
X
X
X
Vent Type X
Inches Millimeters
SLP 11-1/4 286
Figure 4.5 Vertical and Horizontal Offset for SLP Elbows
Vent
Type
X Y
Inches Millimeters Inches Millimeters
SLP 5 127 11-3/4 298
SLP
Pipe
Effective Length Rise/Run
Inches Millimeters Inches Millimeters
SLP4 4 102 2-3/4 70
SLP6 6 152 4-1/4 108
SLP12 12 305 8-1/2 216
SLP24 24 610 17 432
SLP36 36 914 25-1/2 648
SLP48 48 1219 34 864
SLP6A 3 to 6 76 to 152 2-1/8-4-1/4 54-108
SLP12A 3 to 12 76 to 305 2-1/8-8-1/2 54-216
C. Approved Pipe
Approved Pipe - Rigid
This appliance is approved for use with Hearth & Home
Technologies SLP venting systems. Refer to Section
12.A for vent component information and dimensions.
DO NOT mix pipe, ttings or joining methods from differ-
ent manufacturers.
The pipe is tested to be run inside an enclosed wall.
There is no requirement for inspection openings at each
joint within the wall.
WARNING! Risk of Fire or Asphyxiation. This appli-
ance requires a separate vent. DO NOT vent to a pipe
serving a separate solid fuel burning appliance.

20 Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
E. Measuring Standards
Vertical and horizontal measurements listed in the vent
diagrams were made using the following standards:
• Pipe measurements are shown using the effective length
of pipe. See Section 12.A (Figure 12.1) for information
on effective length of pipe components.
• Horizontal terminations are measured to the outside
mounting surface (ange of termination cap) (see Figure
4.6).
• Vertical terminations are measured to top of last section
of pipe. See Figure 4.7.
• Horizontal pipe installed level with no rise.
MEASURE TO SHADED SURFACE
(OUTSIDE MOUNTING SURFACE)
Figure 4.6 Measure to Outside Mounting Surface
Figure 4.7 Measure to Top of Last Section of Pipe