• Important operating and
maintenance instructions
included.
Read, understand and follow
these instructions for safe
installation and operation.
WARNING
If the information in these instructions is not followed exactly, a
fi re may result causing property
damage, personal injury, or death.
• Do not store or use gasoline or other fl 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.
- Immediately call your gas supplier from
a neighbor’s phone. Follow the gas
supplier’s instructions.
- If you cannot reach your gas supplier, call
the fi re department.
• Installation and service must be performed
by a qualifi ed installer, service agency, or
the gas supplier.
This appliance may be installed as an OEM installation
in manufactured home (USA only) or mobile home and
must be installed in accordance with the manufacturer’s
instructions and the manufactured home construction and
safety standard, Title 24 CFR, Part 3280 or Standard for
Installation in Mobile Homes, CAN/CSA Z240MH.
This appliance is only for use with the type(s) of gas
indicated on the rating plate.
DO NOT
DISCARD
•
Leave this manual with
party responsible for
use and operation.
WARNING
HOT SURFACES!
Glass and other surfaces are hot during
operation and cool down.
Hot glass will cause burns.
• Do not touch glass until it is cooled
• NEVER allow children to touch glass
• Keep children away
• CAREFULLY SUPERVISE children in same room as
appliance.
• Alert children and adults to hazards of high
temperatures.
High temperatures may ignite clothing or other
fl ammable materials.
• Keep clothing, furniture, draperies and other combustibles
away.
This appliance has been supplied with an integral
barrier to prevent direct contact with the fi xed glass
panel. Do NOT operate the appliance with the barrier
removed.
Contact your dealer or Hearth & Home Technologies if the
barrier is not present or help is needed to properly install one.
In the Commonwealth of Massachusetts:
• installation must be performed by a licensed plumber or gas fi tter.
• a CO detector shall be installed in the room where the appliance is
installed.
Installation and service of this appliance should be performed
by qualified personnel. Hearth & Home Technologies
suggests NFI certifi ed or factory-trained professionals, or
technicians supervised by an NFI certifi ed professional.
¨
Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07 1
Read this manual before installing or operating this appliance.
Please retain this owner’s manual for future reference.
Congratulations
Congratulations on selecting a Heatilator gas appliance—an
elegant and clean alternative to wood burning appliances.
The Heatilator gas appliance you have selected is designed
to provide the utmost in safety, reliability, and effi ciency.
As the owner of a new appliance, you’ll want to read and
carefully follow all of the instructions contained in this owner’s
The information contained in this owner’s manual, unless
noted otherwise, applies to all models and gas control
systems.
Your new Heatilator gas appliance will give you years of
durable use and trouble-free enjoyment. Welcome to the
Heatilator family of appliance products!
manual. Pay special attention to all cautions and warnings.
This owner’s manual should be retained for future reference.
We suggest you keep it with your other important documents
and product manuals.
We recommend that you record the following pertinent
Homeowner Reference Information
information about your appliance:
Model Name: Date purchased/installed:
Serial Number: Location on appliance:
Dealership purchased from: Dealer phone:
Notes:
Listing Label Information/Location
The model information regarding your specifi c appliance can be found on the rating plate located in the control area of the
appliance.
Serial #
XXXXXXXXX
XXXX
CERTIFIED
FOR CANADA
CERTIFIÉ POUR LE
CANADA
Orifice
Size
Model #
Gas Type
Hearth & Home Technologies Inc
1915 W. Saunders Street
Mt. Pleasant, IA 52641
ANSI Standard
MODEL MFG. DATE
MODÈLE DATE DE FAB.
GAS TYPE/TYPE DE GAZ NATURAL/NATUREL PROPANE
ALTITUDE 0-2000 2000-4000 FT/PI 0-2000 2000-4000 FT/PI
MAX INPUT/DÉBIT XX,XXX XX,XXX BTUH XX,XXX XX,XXX BTUH
MIN INPUT/DÉBIT XX,XXX XX,XXX BTUH XX,XXX XX,XXX BTUH
MANIFOLD PRESSURE/PRESSION TUBULAIRE
MAX. XX IN. W.C./C. D'EAU XX IN. W.C./C. D'EAU
MIN. XX IN. W.C./C. D'EAU XX IN. W.C./C. D'EAU
MIN. INLET PRESS. XX IN. W.C./C. D'EAU 1XX IN. W.C./C. D'EAU
FOR THE PURPOSE OF INPUT ADJUSTMENT
PRESS. MIN. D'ALIMENTATION
ORIFICE SIZE
DIAM. DE L'INJECTEUR XX/XX DIA. in./mm XX/XX DIA. in./mm
XXXXXX
SERIAL
NO. DE SÉRIE
LESS THAN/MOINS DE 3 AMPÈRES., 115V., 60 Hz
DO NOT REMOVE OR COVER THIS LABEL.
VENTED GAS FIREPLACE - NOT FOR USE WITH SOLID FUEL.
FOYER À GAZ À ÉVACUATION - NE DOIT PAS ÊTRE UTILISÉ
AVEC UN COMBUSTIBLE SOLIDE.
2 Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07
This product is listed to ANSI standards for “Vented Gas
Fireplaces” and “Gas Fired Appliances for Use at High Altitudes”.
This model (natural gas and propane) can be installed in a
bedroom (in the United States) which has a total volume of
unconfi ned space appropriate to the particular installation.
Refer to the National Fuel Gas Code ANSI Z223.1/NFPA54
(current edition), The Uniform Mechanical Code - (current edition), and local building offi cials for the options al-
lowed in obtaining an effective bedroom volume of unconfi ned space.
This model (natural gas and propane) can be installed in a
bedroom (in Canada) if a thermostat is installed with the appliance. Consult local code authorities.
NOT INTENDED FOR USE AS A PRIMARY HEAT
SOURCE. This appliance is tested and approved as either
supplemental room heat or as a decorative appliance. It
should not be factored as primary heat in residential heating
calculations.
B. Glass Specifi cations
Hearth & Home Technologies appliances manufactured with
tempered glass may be installed in hazardous locations such
as bathtub enclosures as defi ned by the Consumer Product
Safety Commission (CPSC). The tempered glass has been
tested and certifi ed to the requirements of ANSI Z97.1 and
CPSC 16 CFR 1202 (Safety Glazing Certifi cation Council
SGCC# 1595 and 1597. Architectural Testing, Inc. Reports
02-31919.01 and 02-31917.01).
This statement is in compliance with CPSC 16 CFR Section
1201.5 “Certifi cation and labeling requirements” which refers
to 15 U.S. Code (USC) 2063 stating “…Such certifi cate shall
accompany the product or shall otherwise be furnished to
any distributor or retailer to whom the product is delivered.”
Some local building codes require the use of tempered glass
with permanent marking in such locations. Glass meeting
this requirement is available from the factory. Please contact
your dealer or distributor to order.
U.L. Listed gas appliances are tested and approved without
requiring changes for elevations from 0 to 2000 feet in the
U.S.A. and Canada.
When installing this appliance at an elevation above 2000 ft,
it may be necessary to decrease the input rating by changing the existing burner orifi ce to a smaller size. Input rate
should be reduced by 4% for each 1000 ft above a 2000 ft
elevation in the U.S.A., or 10% for elevations between 2000
and 4500 ft in Canada. If the heating value of the gas has
been reduced, these rules do not apply. To identify the proper orifi ce size, check with the local gas utility.
If installing this appliance at an elevation above 4500 ft (in
Canada), check with local authorities.
WARNING
Do NOT use this appliance if any part has been under
water. Immediately call a qualifi ed service technician
to inspect the appliance and to replace any part of the
control system and any gas control which has been
under water.
E. Non-Combustible Materials
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, Stan-
dard Test Method for Behavior of Materials in a Vertical
Tube Furnace at 750° C, shall be considered non-combus-
tible materials.
Note: This installation must conform with local codes. In the
absence of local codes you must comply with the National Fuel Gas Code, ANSI Z223.1-latest edition in the U.S.A.
and the CAN/CGA B149 Installation Codes in Canada.
4 Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07
F. Combustible Materials
Materials made of or surfaced with wood, compressed paper, plant fi bers, plastics, or other material that can ignite and
burn, whether fl ame proofed or not, or whether plastered or
unplastered shall be considered combustible materials.
2
Getting Started
2
A. Design and Installation Considerations
Heatilator B-vent gas appliances are designed to operate
with all exhaust gases expelled to the outside of the building,
and combustion air pulled from the room.
CAUTION
Check building codes prior to installation.
• Installation MUST comply with local, regional,
state and national codes and regulations.
• Consult insurance carrier, local building, fire
offi cials or authorities having jurisdiction about
restrictions, installation inspection, and permits.
When planning an appliance installation, it’s necessary to
determine the following information before installing:
• Where the appliance is to be installed. See Sections 3
and 4.
• The vent system confi guration to be used. See Sections
5 and 6.
• Gas supply piping. See Sections 7 and 9.
• Electrical wiring. See Sections 7 and 10
• Framing and finishing details. See Sections 3, 6
and 11.
• Whether optional accessories—devices such as a fan, wall
switch, or remote control—are desired. See Section 16.
WARNING
Keep appliance dry.
• Mold or rust may cause
odors.
• Water may damage controls.
Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07 5
B. Negative Pressure
WARNING
Asphyxiation Risk
• Negative pressure can cause spillage of
combustion fumes and soot.
• Fire needs to draft properly for safe
operation.
Draft is the pressure difference needed to vent fi replaces
successfully. Considerations for successful draft include:
• Preventing negative pressure.
• Location of fi replace and chimney.
Negative Pressure
Negative pressure results from the imbalance of air available for the fi replace to operate properly. Causes for this
imbalance include:
• Exhaust fans (kitchen, bath, etc.).
• Range hoods.
• Combustion air requirements for furnaces, water heaters
and other combustion appliances.
• Clothes dryers.
• Location of return-air vents to furnace or air
conditioning.
To minimize the effects of negative air pressure, the following must be considered:
• Install the outside air kit. Install the intake on the side of
the house towards prevailing winds during the heating
season.
• Ensure adequate outdoor air is supplied for combustion
appliances and exhaust equipment.
• Ensure furnace and air conditioning return vents are not
located in the immediate vicinity of the fi replace.
• Avoid installing the fi replace near doors, walkways or small
isolated spaces.
• Recessed lighting should be a “sealed can” design; attic
hatches weather stripped or sealed; attic mounted duct
work and air handler joints and seams taped or sealed.
• Basement installations should be avoided due to stack
effect. Stack effect creates negative pressure in lower
levels. Hearth & Home Technologies recommends the
use of direct vent fi replaces in basements.
Location of the fi replace and chimney will affect performance.
As shown in Figure 2.1 the chimney should:
• Be installed through the warm airspace enclosed by the
building envelope. This helps to produce more draft,
especially during lighting and die-down of the fi re.
• Penetrate the highest part of the roof. This minimizes the
effects of wind turbulence.
• Be located away from trees, adjacent structures, uneven
roof lines and other obstructions.
Offsets can restrict draft so their use should be minimized.
Consider the fi replace location relative to fl oor and ceiling
and attic joists.
Location
Not
Recommended
Windward
Outside Air Intake
Figure 2.1 Recommended Chimney Locations
Marginal
Location
Recommended
Location
Multi-level Roofs
Recommended
Location
Location
Not
Recommended
Leeward
6 Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07
C. Tools and Supplies Needed
Before beginning the installation be sure that the following
tools and building supplies are available.
Reciprocating saw Framing material
Pliers Hi temp caulking material
Hammer Gloves
Phillips screwdriver Framing square
Flat blade screwdriver Electric drill and bits (1/4 in.)
Plumb line Safety glasses
Level Manometer
Voltmeter Tape measure
Non-corrosive leak check solution
1/2 - 3/4 in. length, #6 or #8 Self-drilling screws
One 1/4 in. female connection (for optional fan).
D. Inspect the Appliance and Components
WARNING
Inspect appliance and components for
damage. Damaged parts may impair safe
operation.
• Do NOT install damaged components.
• Do NOT install incomplete components.
• Do NOT install substitute components.
Report damaged parts to dealer.
The following B-vent components are needed for installation. See Figure 2.2.
• Appliance
• Pipe components
• Firestops
• Attic Insulation Shield
• Elbows
• Strapping
• Roof fl ashing or chase top
• Termination cap
• Storm Collar
• Carefully remove the appliance and components from the
packaging.
• The vent system components and trim doors are shipped
in separate packages.
• The gas logs may be packaged separately and must be
fi eld installed.
• Report to your dealer any parts damaged in shipment,
particularly the condition of the glass.
• Read all of the instructions before starting the
installation. Follow these instructions carefully
during the installation to ensure maximum safety and
benefi t.
Vertical
Termination
Cap
Storm
Collar
Roof
Flashing
Ceiling
Firestop
B-Vent Pipe
Sections
Figure 2.2 Typical Vertical Installation
WARNING
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.
• Modifi cation of the appliance or vent system.
• Installation other than as instructed by Hearth & Home
Technologies.
• Improper positioning of the gas logs or the glass
door.
• Installation and/or use of any component part not
approved by Hearth & Home Technologies.
Any such action may cause a fi re hazard.
Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07 7
3
Framing and Clearances
3
Note:
• Illustrations refl ect typical installations and are FOR
DESIGN PURPOSES ONLY.
• Illustrations/diagrams are not drawn to scale.
• Actual installation may vary due to individual design
preference.
A. Select Appliance Location
When selecting a location for your appliance it is important to
consider the required clearances to walls (See Figure 3.1).
WARNING
Fire Risk
Provide adequate clearance:
• Around air openings.
• For service access.
Locate appliance away from traffi c areas.
Note: For actual appliance dimensions refer to
Section 16.
1/2 in. (13 mm) min.
appliance
to combustibles
B
B
C
A
Drywall
A
In addition to these framing dimensions, also reference the
following sections:
• Clearances and Mantel Projections (Sections 3.C. and 3.D.)
• Vent Clearances and Framing (Section 6)
A
D
Alcove
Installation
C
48 in.
(1219 mm)
max.
ModelABCD
NB3630M/MI
NB3933M/MI
NB4236M/MI
NB4842M/MI
Figure 3.1 Appliance Locations
8 Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07
inches3633-1/219-5/837
mm914851498940
inches3935-1/219-5/840
mm9919024981016
inches4237-5/819-5/843
mm10679564981092
inches4841-7/819-5/849
mm121910644981245
B. Construct the Appliance Chase
A chase is a vertical boxlike structure built to enclose the gas
appliance and/or its vent system. Vertical vents that run on
the outside of a building may be, but are not required to be,
installed inside a chase.
Construction of the chase may vary with the type of building. These instructions are not substitutes for the requirements of local building codes. Local building codes MUST
be checked.
Chases should be constructed in the manner of all outside
walls of the home to prevent cold air drafting problems. The
chase should not break the outside building envelope in any
manner.
Walls, ceiling, base plate and cantilever fl oor of the chase
should be insulated. Vapor and air infi ltration barriers should
be installed in the chase as per regional codes for the rest of
the home. Additionally, Hearth & Home Technologies recommends that the inside surfaces be sheet rocked and taped
(or the use of an equivalent method) for maximum air tightness.
To further prevent drafts gas line holes and other openings
should be caulked with high temp caulk or stuffed with unfaced insulation. If the appliance is being installed on a cement slab, we recommend that a layer of plywood be placed
underneath to prevent conducting cold up into the room.
WARNING
Fire Risk
• Construct chase to all clearance
specifi cations in manual.
• Locate and install appliance to all
clearance specifi cations in manual.
Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07 9
C. Clearances
Note: If the inside of the framed cavity is to be
fi nished, the framing dimensions must include the
fi nished sur face. If drywall is to be attached to the
rear wall, the depth must be measured from the
drywall surface.
1/2 in.
(13 mm)
Combustible flooring may be installed
next to the front of the appliance.
1/2 in.
(13 mm)
Drywall
0 in.
WARNING
Fire Risk
Odor Risk
• Install appliance on hard metal or wood
surfaces extending full width and depth
of appliance.
• Do NOT install appliance directly on
carpeting, vinyl, tile or any combustible
material other than wood.
• Do NOT place furniture or any other
combustible household objects within
36 in. of the appliance front.
Per
Manufacturer’s
Specifications
32-1/2 in.
(826 mm)
to ceiling
36 in.
(914 mm)
Combustible Object
0 in. TO LEVEL
OF STANDOFFS
B
0 in.
A
Rough Opening
Model
NB3630M/MI in.3634-7/819-5/8
mm914886498
NB3933M/MI in.3934-7/819-5/8
mm991886498
NB4236M/MI in.4234-7/819-5/8
mm1067886498
NB4842M/MI in.4834-7/819-5/8
mm1219886498
(Width)
B
Rough Opening
(Height)
C
A
C
Rough Opening
(Depth)
Figure 3.2 Clearances to Combustibles
10 Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07
D. Mantel Projections
32-1/2 in. minimum
to ceiling
18
17
16
15
14
13
12
11
11- 1/2
12-1/4
10
9
9-1/4
10-3/4
10
8
7
6
5
4
3
6-1/4
5-1/2
5
8-1/2
7-3/4
7
Measured from top of hood (in inches)
14-1/2
13-3/4
13
16
15-1/4
Figure 3.3 Clearances to Mantels or Other Combustibles Above Appliance
Top o f
Appliance
Drywall
A
48 in.
(1219 mm)
B
max.
Mantel Leg or
Perpendicular Wall
1 in. (25 mm) min.
A
to perpendicular wall
3-1/2 in. (89 mm) min.
B
from fireplace opening
to perpendicular wall
Figure 3.4 Clearances to Combustible Mantel Legs or Wall Projec-
tions (acceptable on both sides of opening)
WARNING
Fire Risk
• Comply with all minimum clearances to combustibles as specifi ed.
• Framing or fi nishing material used on the front of, or in front of, the appliance closer than the minimums
listed, must be constructed entirely of noncombustible materials (i.e., steel studs, concrete board, etc.).
Failure to comply may cause fi re.
Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07 11
4
Termination Locations
4
A. Vent Termination Minimum Clearances
WARNING
Fire Risk
Explosion Risk
Maintain vent clearance to combustibles as
specifi ed.
• Do not pack air space with insulation or
other materials.
Failure to keep insulation or other materials
away from vent pipe may cause fi re.
8 ft
Termination
Cap
(2.44 m)
Lowest
Discharge
Opening
Vertical
wall
B-Vent Gas, Wood or Fuel
Oil Termination
8 ft
A
18 in.
(457 mm)
B
Gas
Termination
Termination Caps Staggered Height
A Gas Termination Wood or Fuel Oil Termination
B 6 in.
(152 mm) min. 20 in. (508 mm) min.
B-Vent Gas, Wood or Fuel
Oil Termination
(2.44 m)
(minimum) to
Perpendicular
Wall
(gas only)
Storm Collar
Roof
Flashing
H (min.) - Minimum height
from roof to lowest
discharge opening.
Roof Pitch H (Min.) Ft. Roof Pitch H (Min.) Ft.
Flat to 6/12 1.0* Over 11/12 to 12/12 4.0
Over 6/12 to 7/12 1.25* Over 12/12 to 14/12 5.0
Over 7/12 to 8/12 1.5* Over 14/12 to 16/12 6.0
Over 8/12 to 9/12 2.0* Over 16/12 to 18/12 7.0
Over 9/12 to 10/12 2.5 Over 18/12 to 20/12 7.5
Over 10/12 to 11/12 3.25 Over 20/12 to 21/12 8.0
* 3 ft. minimum in snow regions
X
12
Roof Pitch
is X / 12
8 ft
(2.44 m)
(minimum) to
Wood or
Gas Termination
Termination Caps Same Height
* If using decorative cap cover(s), this distance may
need to be increased. Refer to the installation instruc tions supplied with the decorative cap cover.
Figure 4.2 Multiple Vertical Termination
20 in. min. *
(508 mm)
Perpendicular
Wall
(gas only)
Figure 4.1
Minimum Height from Roof to Lowest Discharge Opening
Figure 4.1 specifi es minimum vent heights for various
pitched roofs.
12 Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07
5
Vent Information and Diagrams
5
A. Vent Guidelines
WARNING
Fire Risk
Asphyxiation Risk
This appliance requires the specifi ed pipe
for operation.
• Incorrect pipe may cause spillage,
condensation and overheating.
These models require the following size B-Vent double wall
vent pipe.
ModelPipe Size
NB3630M/NB3630MI/NB3933M/NB3933MI5 in. (127 mm)
NB4236M/NB4236MI/NB4842M/NB4842MI5 in. (127 mm)
• Follow pipe manufacturer’s installation guidelines when
installing the appliance.
B. Vent System Confi guration
• Rise to Run Ratio: 2:1
• Maximum Total Horizontal Run: 30 ft (9.14 m)
• Minimum Total Vertical Rise: 12 ft (3.66 m)
• Maximum Total Vertical Rise: 60 ft (18.29 m)
• Maximum Number of Elbows: Four 90° or Eight 45°
Minimum
clearances are
per vent
manufacturer's
specifications
Metal
12 ft (3.66 m) min.
60 ft (18.29 m) max.
plumber's strap
secured to
framing
Vent supports are per
vent manufacturer's
specifications
WARNING
Fire Risk
Explosion Risk
Asphyxiation Risk
Do NOT connect this gas appliance to a
chimney fl ue serving a separate solid-fuel
or gas burning appliance.
• Vent this appliance directly outside.
• Use separate vent system for this
appliance.
May impair safe operation of this appliance or
other appliances connected to the fl ue.
CAUTION
ALL vent configuration specifications MUST be
followed.
• This product is tested and listed to appliance and
vent manufacturer’s specifi cations.
• Appliance performance will suffer if specifi cations
are not followed.
Figure 5.1 Vertical Termination Clearances
Vent supports
are per vent
manufacturer’s
specifications.
Maximum horizontal run is 50% of
vertical. Horizontal run cannot be
more than 30 ft. (9.14 m).
Figure 5.2 Maximum Horizontal Run
Metal
Plumbers'
Strap
Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07 13
WARNING
Fire Risk
Explosion Risk
Insulation and other combustibles must not
infringe on clearances.
• ALWAYS maintain specifi ed clearances
around venting and fi restop systems.
• Install fi restops as specifi ed.
Failure to keep insulation or other material
away from vent pipe may cause fi re.
Maximum
horizontal
30 ft (9.14 m)
45°
Elbow
90°
Elbow
Figure 5.3 Maximum Horizontal Run
Offsets exceeding
45° adapt horizontal
Note: Maximum horizontal
distance is 50% of vertical
vent height.
limitations
14 Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07
6
Vent Clearances and Framing
6
A. Pipe Clearances to Combustibles
WARNING
Fire Risk
Explosion Risk
Maintain vent clearance to combustibles as
specifi ed.
• Do not pack air space with insulation or
other materials.
• National building codes recommend
using attic shield to keep loose materials/
insulation from contacting vent.
Failure to keep insulation or other materials
away from vent pipe may cause fi re.
Follow vent pipe manufacturer’s instructions for all clearances around pipe.
B. Wall Penetration Framing
Do not pack with insulation
or other materials.
Use manufacturer's
installation instructions for
framing dimensions
Figure 6.1 Exterior Wall Hole
For a wall penetration consult B-vent pipe manufacturer’s
instructions. Use same dimensional framing materials as
those used in the wall construction.
Note: MUST terminate vertically.
C. Vertical Penetration Framing
Use B-vent manufacturer’s fi restops to provide adequate
clearances.
WARNING
Fire Risk
Keep loose materials or blown insulation
from touching the vent pipe.
• National building codes recommend
using attic shield to keep loose materials/
insulation from contacting vent.
• Hearth & Home Technologies requires
the use of an attic shield.
Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07 15
7
Appliance Preparation
7
CAUTION
Sharp Edges
• Wear protective gloves
and safety glasses during
installation.
A. Installing Outside Air Kit Damper Assembly
WARNING
Fire Risk
Asphyxiation Risk
Maintain vent clearance to combustibles as
specifi ed.
• Do not pack air space with insulation or
other materials.
• National building codes recommend
using attic shield to keep loose materials/
insulation from contacting vent.
Failure to keep insulation or other materials
away from vent pipe may cause fi re.
CAUTION
Risk of Smoke Spillage
Outside air inlet must be located to prevent blockage
from:
• Leaves
• Snow/ice
• Other debris
Blockage may cause combustion air starvation.
This appliance will operate correctly only if adequate ventiation is provided to allow proper draft to the system.
An outside air kit is available as an optional feature with this
appliance. An outside air kit helps to decrease the amount
of room air taken by utilizing outside air for combustion. We
strongly recommend that it be installed.
Note: the outside air kit inlet thimble should be positioned
in a manner that will not allow snow, leaves, etc. to block
the inlet. A 3 ft. (.91 m) minimum height difference must be
maintained from the top of the uppemost chimney section to
the outside combustion air inlet. Reference Section 2.
• The outside air kit can only be installed on the left side of
the appliance.
• Refer to the installation instructions provided with the
kit.
WARNING
Fire Risk
Asphyxiation Risk
Do not draw outside combustion air from:
• Wall, fl oor or ceiling cavity.
• Enclosed space such as an attic or
garage.
• Close proximity to exhaust vents or
chimneys.
Fumes or odor may result.
Figure 7.1 Outside Air Kit Installation
NO
Outlet blocked by
snow, leaves, etc.
YES
Clear area
outside
house or in
ventilated
crawl space
Figure 7.2 Outside Combustion Air Placement
NO
Garage or
combustible
liquids storage
Factory-built
Use only duct materials specified
by manufacturer (preferably with
short run or mainly straight duct,
except small dip for cold air trap
which will help prevent flow of cold air).
NO
Attic space
fireplace
NO
Outlet placed
higher than 3 ft
below the
termination cap
16 Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07
B. Gas and Electrical Connections
Ensure that gas and electrical connections are installed at
this time. Refer to Sections 9 and 10.
C. Securing and Leveling Appliance
WARNING
Fire Risk!
• Prevent contact with sagging, loose
insulation.
• Do NOT install against combustible
materials such as exposed insulation,
plastic and insulation backer.
The diagram shows how to properly position, level, and secure the appliance (see Figure 7.3). Nailing tabs are provided to secure the appliance to the framing members.
• Place the appliance into position.
• Level the appliance from side to side and front to back.
• Shim the appliance as necessary. It is acceptable to use
wood shims.
• Bend out nailing tabs on each side.
• Keep nailing tabs fl ush with the framing.
• Secure the appliance to the framing by using nails or
screws through the nailing tabs.
Nailing Flanges
(both sides)
Figure 7.3 Proper Positioning, Leveling and Securing of an
Appliance
Note: Once appliance is set up for top or rear venting, it
CANNOT be changed at a later time.
CAUTION
Do NOT notch into the framing around the appliance
spacers.
Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07 17
8
Installing Vent Pipe
8
A. Assemble Vent Sections
This B-Vent appliance requires 5 in. B-vent double-wall pipe.
Follow the pipe manufacturer’s installation guidelines when
installing the appliance. This will ensure proper operation
and prevent safety hazards.
WARNING
Fire Risk
Exhaust Fumes Risk
Impaired Performance of Appliance.
• Assemble pipe sections per B-Vent
manufacturer’s instructions.
• Use support tabs for screws.
• Screws must not exceed 1 in. long and
must not penetrate inner lining.
• Pipe may separate if not properly
joined.
B. Attach Vent to Firebox Assembly
Three tabs extend from appliance collar shield. Attach tabs
to fi rst section of B-vent pipe using self-tapping 1/4 in. screws
supplied with appliance. See Figure 8.1.
C. Securing Vent Sections
Secure vent sections with vent supports following B-vent
manufacturer’s instructions.
WARNING
Fire Risk
Explosion Risk
Asphyxiation Risk
Use vent run supports per vent manufacturer’s
installation instructions.
Connect vent sections per vent manufacturer’s
installation instructions.
• Maintain all clearances to combustibles.
• Maintain specifi ed slope (if required).
Improper support may allow vent to sag or
separate.
Figure 8.1 Attaching Vent to Firebox
Ta bs
18 Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07
9
Gas Information
9
A. Fuel Conversion
Before making gas connections ensure appliance being installed is compatible with the available gas type.
Any natural or propane gas conversions necessary to meet
the appliance and locality needs must be made by a qualifi ed technician using Hearth & Home Technologies specifi ed
and approved parts.
B. Gas Pressure
Proper input pressures are required for optimum appliance
performance. Gas line sizing requirements need to be made
following NFPA51.
WARNING
Fire Risk
Explosion Risk
High pressure will damage valve.
• Disconnect gas supply piping BEFORE
pressure testing gas line at test pressures
above 1/2 psig.
• Close the manual shutoff valve BEFORE
pressure testing gas line at test pressures
equal to or less than 1/2 psig.
C. Gas Connection
Note: Have the gas supply line installed in accordance with local building codes, if any. If not, follow ANSI
223.1. Installation should be done by a qualifi ed installer
approved and/or licensed as required by the locality. (In
the Commonwealth of Massachusetts installation must be
performed by a licensed plumber or gas fi tter.)
Note: A listed (and Commonwealth of Massachusetts
approved) 1/2 in. (13 mm) T-handle manual shut-off valve
and fl exible gas connector are connected to the 1/2 in.
(13 mm) control valve inlet.
• If substituting for these components, please consult
local codes for compliance.
Refer to Reference Section 16 for location of gas line access
in appliance.
Note: Gas line may be run from either side of appliance
using one of the knockouts provided. Hole in outer shell
NOT to exceed 2-1/2 in. and should never penetrate the
fi rebox.
WARNING
Fire Risk
Explosion Risk
Verify inlet pressures.
• High pressure may cause overfire
condition.
• Low pressure may cause explosion.
• Verify minimum pressures when other
household gas appliances are operating.
Install regulator upstream of valve if line
pressure is greater than 1/2 psig.
Pressure requirements for appliance are shown in table below. Minimum pressures must be met when other household
gas appliances are operating.
PressureNatural GasPropane
Minimum Inlet Pressure5.0 in. w.c.11.0 in. w.c.
Maximum Inlet Pressure7.0 in. w.c.14.0 in. w.c.
Manifold Pressure3.5 in. w.c.10.0 in. w.c.
WARNING
Gas Leak Risk
• Support control when attaching pipe to
prevent bending gas line.
Note: The gap between supply piping and gas access hole
may be caulked with high temperature caulk or stuffed
with non-combustible, unfaced insulation to prevent cold
air infi ltration.
Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07 19
• Ensure that gas line does not come in contact with
outer wrap of appliance. Follow local codes.
• Incoming gas line should be piped into the valve
compartment and connected to the 1/2 in. connection
on the manual shutoff valve.
WARNING
Fire Risk
Explosion Risk
• Gas build-up during line purge may
ignite.
• Purge should be performed by qualifi ed
technician.
• Ensure adequate ventilation.
• Ensure there are no ignition sources such
as sparks or open fl ames.
• A small amount of air will be in the gas supply lines.
When fi rst lighting appliance it will take a short time
for air to purge from lines. When purging is complete
the appliance will light and operate normally.
D. High Altitude Installations
U.L. listed gas appliances are tested and approved without
requiring changes for elevations from 0 to 2000 ft in the USA
and Canada.
When installing this appliance at an elevation above 2000 ft,
it may be necessary to decrease the input rating by changing the existing burner orifi ce to a smaller size. Input rate
should be reduced by 4% for each 1000 ft above a 2000 ft
elevation in the U.S.A., or 10% for elevations between 2000
and 4500 ft in Canada. If the heating value of the gas has
been reduced, these rules do not apply. To identify the proper orifi ce size, check with the local gas utility.
If installing this appliance at an elevation above 4500 ft (in
Canada), check with local authorities.
WARNING
CHECK FOR GAS LEAKS
Fire Risk
Explosion Risk
Asphyxiation Risk
• Check all fi ttings and connections.
• Do not use open fl ame.
• After the gas line installation is complete,
all connections must be tightened and
checked for leaks with a commercially
available, non-corrosive leak check
solution. Be sure to rinse off all leak check
solution following testing.
Fittings and connections may have loosened
during shipping and handling.
WARNING
Fire Risk
Explosion Risk
Do NOT change the valve settings.
• This valve has been preset at the
factory.
• Changing valve settings may result in fi re
hazard or bodily injury.
20 Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07
10
10
Electrical Information
A. Recommendation for Wire
This appliance requires 110-120 VAC to be wired to the junction box either for use of optional accessories (standing pilot
ignition) or for proper operation of the appliance (Intellifi re
ignition).
Open the control access panel to view wiring system and
gas valve. If this appliance has a red or black ignitor button
this appliance has a standing pilot ignition system. If there is
no red or black ignitor button, this appliance has an Intellifi re
ignition system.
Note: This appliance must be electrically wired and
grounded in accordance with local codes or, in the absence
of local codes, with National Electric Code ANSI/NFPA
70-latest edition or the Canadian Electric Code CSA
C22.1.
B. Connecting to the Appliance
WARNING
Shock Risk
Explosion Risk
Do NOT wire 110V to valve.
Do NOT wire 110V to wall switch
• Incorrect wiring will damage millivolt
values.
• Incorrect wiring will override IPI safety
lockout and may cause explosion.
• This appliance may be used with a wall switch, wall
mounted thermostat and/or a remote control.
• If using thermostat use one compatible with a millivolt gas
valve system.
• Follow parameters for locating thermostat (see individual
thermostat instructions) to ensure proper operation of
appliance.
• Use low resistance thermostat wire for wiring from ignition
system to the wall switch and thermostat.
• Keep wire lengths short as possible by removing any
excess wire length.
• Low voltage and 110 VAC voltage cannot be shared within
the same wall box.
C. Intellifi re Ignition System Wiring
This appliance requires a 110 VAC supply to the appliance
junction box for operation. (See Figure 10.1 for a wiring diagram and Figure 10.3 for junction box wiring.)
This appliance is equipped with an Intellifi re control valve
which operates on a 3 volt system.
This appliance is supplied with a battery pack and a 3 volt
AC transformer, which requires the installation of the supplied junction box. It is highly recommended that the junction
box be installed at this time to avoid reconstruction.
The battery pack requires two D cell batteries (not included).
Batteries cannot be placed in the battery pack while using
the 3 volt AC transformer. Conversely, the transformer must
be unplugged if the battery pack is used.
CAUTION
Battery polarity must be correct or module damage will
occur.
Optional Accessories Requirements
Wiring for optional accessories should be done now to
avoid reconstruction.
CAUTION
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and dangerous
operation. Verify proper operation after servicing.
CAUTION
Shock Risk
• Replace damaged wire with type 105° C
rated wire.
• Wire must have high temperature
insulation.
Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07 21
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