Owner’s Manual
Installation and Operation
Models:
NBV3630, NBV3630I,
NBV3933, NBV3933I,
NBV4236, NBV4236I,
NBV4842, NBV4842I
B-Vent Gas Appliance
CAUTION
DO NOT DISCARD THIS MANUAL
• Important operating and • |
Read, understand and follow |
• Leave this manual with |
maintenance instructions |
these instructions for safe |
party responsible for |
included. |
installation and operation. |
use and operation. |
DO DISCARDNOT
WARNING |
WARNING |
If the information in these instructions is not followed exactly, a fire may result causing property damage, personal injury, or death.
•Do not store or use gasoline or other flammable 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 fire department.
•Installation and service must be performed by a qualified 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.
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 flammable materials.
•Keep clothing, furniture, draperies and other combustibles away.
This appliance has been supplied with an integral barrier to prevent direct contact with the fixed 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 fitter.
•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 certified or factory-trained professionals, or technicians supervised by an NFI certified professional.
Heatilator • Novus NBV • 4055-188 Rev C • 04/08 |
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 efficiency.
As the owner of a new appliance, you’ll want to read and carefully follow all of the instructions contained in this owner’s 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.
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!
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Homeowner Reference Information |
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Location on appliance: |
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Dealership purchased from: |
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Listing Label Information/Location
The model information regarding your specific appliance can be found on the rating plate located in the control area of the appliance.
Gas Type |
Serial # |
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Hearth & Home Technologies Inc |
SERIAL |
XXXXXXXXX |
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Mt. Pleasant, IA 52641 |
NO. DE SÉRIE |
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1915 W. Saunders Street |
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Model # |
ANSI Standard |
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MODEL |
XXXXXX |
MFG. DATE |
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MODÈLE |
DATE DE FAB. |
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GAS TYPE/TYPE DE GAZ |
NATURAL/NATUREL |
PROPANE |
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ALTITUDE |
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0-2000 2000-4000 FT/PI |
0-2000 2000-4000 FT/PI |
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MAX INPUT/DÉBIT |
XX,XXX XX,XXX BTUH |
XX,XXX XX,XXX BTUH |
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MIN INPUT/DÉBIT |
XX,XXX XX,XXX BTUH |
XX,XXX XX,XXX BTUH |
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MANIFOLD PRESSURE/PRESSION TUBULAIRE |
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MAX. |
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XX IN. W.C./C. D'EAU |
XX IN. W.C./C. D'EAU |
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MIN. |
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XX IN. W.C./C. D'EAU |
XX IN. W.C./C. D'EAU |
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MIN. INLET PRESS. |
XX IN. W.C./C. D'EAU |
1XX IN. W.C./C. D'EAU |
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FOR THE PURPOSE OF INPUT ADJUSTMENT |
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PRESS. MIN. D'ALIMENTATION |
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ORIFICE SIZE |
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DIAM. DE L'INJECTEUR |
XX/XX DIA. in./mm |
XX/XX DIA. in./mm |
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.
XXXX
CERTIFIED
FOR CANADA
CERTIFIÉ POUR LE
CANADA
Orifice
Size
2 |
Heatilator • Novus NBV • 4055-188 Rev C • 04/08 |
Table of Contents
1 Listing and Code Approvals |
4 |
A. Appliance Certification. . . . . . . . . . . . . . . . . . . . . . . . . 4
B. Glass Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 4
C. BTU Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
D. High Altitude Installations . . . . . . . . . . . . . . . . . . . . . . 4
E. Non-Combustible Materials . . . . . . . . . . . . . . . . . . . . . 4
F. Combustible Materials. . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Getting Started |
5 |
A. Design and Installation Considerations . . . . . . . . . . . . 5
B. Negative Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
C. Tools and Supplies Needed. . . . . . . . . . . . . . . . . . . . . 7
D. Inspect the Appliance and Components . . . . . . . . . . . 7
3 Framing and Clearances |
8 |
A. Select Appliance Location . . . . . . . . . . . . . . . . . . . . . . 8
B. Construct the Appliance Chase . . . . . . . . . . . . . . . . . . 9
C. Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
D. Mantel Projections. . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4 Termination Locations |
12 |
A. Vent Termination Minimum Clearances. . . . . . . . . . . 12
5 Vent Information and Diagrams |
13 |
A. Vent Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
B. Vent System Configuration . . . . . . . . . . . . . . . . . . . . 13
6 Vent Clearances and Framing |
15 |
A. Pipe Clearances to Combustibles . . . . . . . . . . . . . . . 15 B. Wall Penetration Framing . . . . . . . . . . . . . . . . . . . . . 15 C. Vertical Penetration Framing . . . . . . . . . . . . . . . . . . . 15
7 Appliance Preparation |
16 |
A. Installing Outside Air Kit Damper Assembly . . . . . . . 16 B. Gas and Electrical Connections . . . . . . . . . . . . . . . . 17 C. Securing and Leveling Appliance . . . . . . . . . . . . . . . 17
8 Installing Vent Pipe |
18 |
A. Assemble Vent Sections . . . . . . . . . . . . . . . . . . . . . . 18 B. Attach Vent to Firebox Assembly . . . . . . . . . . . . . . . 18 C. Securing Vent Sections . . . . . . . . . . . . . . . . . . . . . . . 18
9 Gas Information |
19 |
A. Fuel Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
B. Gas Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
C. Gas Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
D. High Altitude Installations . . . . . . . . . . . . . . . . . . . . . 20
10 Electrical Information |
21 |
A. Recommendation for Wire. . . . . . . . . . . . . . . . . . . . . 21 B. Connecting to the Appliance . . . . . . . . . . . . . . . . . . . 21 C. Intellifire Ignition System Wiring . . . . . . . . . . . . . . . . 21 D. Standing Pilot Ignition System Wiring . . . . . . . . . . . . 22 E. Junction Box Installation . . . . . . . . . . . . . . . . . . . . . . 23 F. Wall Switch Installation for Fan (Optional). . . . . . . . . 23
11 Finishing |
24 |
A. Mantel Projections. . . . . . . . . . . . . . . . . . . . . . . . . . . 24
B. Facing Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
12 |
Appliance Setup |
25 |
13 |
Operating Instructions |
30 |
A. Before Lighting Appliance . . . . . . . . . . . . . . . . . . . . . 30 B. Check Appliance Draft. . . . . . . . . . . . . . . . . . . . . . . . 31 C. Lighting the Appliance . . . . . . . . . . . . . . . . . . . . . . . . 32 D. After the Appliance is Lit . . . . . . . . . . . . . . . . . . . . . . 34 E. Frequently Asked Questions . . . . . . . . . . . . . . . . . . . 34
14 Troubleshooting |
35 |
A. Standing Pilot Ignition System. . . . . . . . . . . . . . . . . . 35
B. Intellifire Ignition System . . . . . . . . . . . . . . . . . . . . . . 37
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Maintaining and Servicing the Appliance |
38 |
16 |
Reference Materials |
40 |
A. Appliance Dimension Diagram . . . . . . . . . . . . . . . . . 40
B. Service Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
C. Optional Components . . . . . . . . . . . . . . . . . . . . . . . . 49
D. Limited Lifetime Warranty . . . . . . . . . . . . . . . . . . . . . 55
E. Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Note: An arrow (¨) found in the text signifies change in content.
Heatilator • Novus NBV • 4055-188 Rev C • 04/08 |
3 |
1 Listing and Code Approvals
A. Appliance Certification ¨C. BTU Specifications
MODELS: NBV3630, NBV3630I, NBV3933, NBV3933I,
NBV4236, NBV4236I, NBV4842, NBV4842I
LABORATORY: Underwriters Laboratories, Inc. (UL)
TYPE: B-Vent Gas Appliance
STANDARD: ANSI Z21.88a-2007/CSA 2.33a-2007
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 unconfined 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 officials for the options allowed in obtaining an effective bedroom volume of unconfined 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 Specifications
Hearth & Home Technologies appliances manufactured with tempered glass may be installed in hazardous locations such as bathtub enclosures as defined by the Consumer Product Safety Commission (CPSC). The tempered glass has been tested and certified to the requirements of ANSI Z97.1 and CPSC 16 CFR 1202 (Safety Glazing Certification 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 “Certification and labeling requirements” which refers to 15 U.S. Code (USC) 2063 stating “…Such certificate 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.
Novus NBV |
NBV3630 |
NBV3933 |
Standing Pilot or IPI |
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Max/Min Input Rate (NG) |
20,000/14,000 |
22,000/15,000 |
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Orifice Size (NG) |
0.083 |
0.089 (#43) |
Max/Min Input Rate (LP) |
20,000/15,000 |
22,000/15,000 |
Orifice Size (LP) |
0.053 |
0.055 (#54) |
Novus NBV |
NBV4236 |
NBV4842 |
Standing Pilot or IPI |
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Max/Min Input Rate (NG) |
25,000/17,000 |
30,000/20,500 |
Orifice Size (NG) |
0.093 (#42) |
0.104 (#37) |
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Max/Min Input Rate (LP) |
25,000/17,000 |
30,000/20,500 |
Orifice Size (LP) |
0.058 |
0.063 (#52) |
D. High Altitude Installations
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 orifice 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 orifice 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 qualified 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, Standard 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.
F. Combustible Materials
Materials made of or surfaced with wood, compressed paper, plant fibers, plastics, or other material that can ignite and burn, whether flame proofed or not, or whether plastered or unplastered shall be considered combustible materials.
4 |
Heatilator • Novus NBV • 4055-188 Rev C • 04/08 |
2 Getting Started
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 officials 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 configuration 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 NBV • 4055-188 Rev C • 04/08 |
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 fireplaces successfully. Considerations for successful draft include:
•Preventing negative pressure.
•Location of fireplace and chimney.
Negative Pressure
Negative pressure results from the imbalance of air available for the fireplace 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.
•Imbalances of the HVAC air handling system.
•Upper level air leaks (recessed lighting, attic hatch opening, duct leaks).
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 fireplace.
•Avoid installing the fireplace 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 fireplaces in basements.
Location of the fireplace 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 fire.
•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 fireplace location relative to floor and ceiling and attic joists.
Recommended
Location Recommended
Location
Marginal
Location Location
Not
Recommended
Location
Not
Recommended
Windward
Outside Air Intake |
Leeward |
Multi-level Roofs
Figure 2.1 Recommended Chimney Locations
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Heatilator • Novus NBV • 4055-188 Rev C • 04/08 |
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 flashing 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 field 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 benefit.
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.
•Modification 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 fire hazard.
Heatilator • Novus NBV • 4055-188 Rev C • 04/08 |
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3 Framing and Clearances
Note:
•Illustrations reflect 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 traffic areas.
Note: For actual appliance dimensions refer to Section 16.
1/2 in. (13 mm) min. |
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appliance |
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to combustibles |
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48 in. |
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Drywall |
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Alcove |
max. |
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Installation |
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In addition to these framing dimensions, also reference the |
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• Clearances and Mantel Projections (Sections 3.C. and 3.D.) |
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• Vent Clearances and Framing (Section 6) |
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NBV3630/ |
inches |
36 |
33-1/2 |
19-5/8 |
37 |
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NBV3630I |
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mm |
914 |
851 |
498 |
940 |
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NBV3933/ |
inches |
39 |
35-1/2 |
19-5/8 |
40 |
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NBV3933I |
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mm |
991 |
902 |
498 |
1016 |
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NBV4236/ |
inches |
42 |
37-5/8 |
19-5/8 |
43 |
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NBV4236I |
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mm |
1067 |
956 |
498 |
1092 |
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NBV4842/ |
inches |
48 |
41-7/8 |
19-5/8 |
49 |
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NBV4842I |
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mm |
1219 |
1064 |
498 |
1245 |
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Figure 3.1 |
Appliance Locations |
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Heatilator • Novus NBV • 4055-188 Rev C • 04/08 |
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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 floor of the chase should be insulated. Vapor and air infiltration 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 specifications in manual.
•Locate and install appliance to all clearance specifications in manual.
Heatilator • Novus NBV • 4055-188 Rev C • 04/08 |
9 |
C. Clearances
Note: If the inside of the framed cavity is to be finished, the framing dimensions must include the finished surface. If drywall is to be attached to the rear wall, the depth must be measured from the drywall surface.
1/2 in. (13 mm)
1/2 in. (13 mm)
Drywall
0 in.
Combustible flooring may be installed next to the front of the appliance.
32-1/2 in.
(826 mm) to ceiling
0 in. TO LEVEL OF STANDOFFS
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
Combustible Object
36 in.
(914 mm)
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0 in. |
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Rough Opening |
Rough Opening |
Rough Opening |
Model |
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(Width) |
(Height) |
(Depth) |
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NBV3630/ |
in. |
36 |
34-7/8 |
19-5/8 |
NBV3630I |
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mm |
914 |
886 |
498 |
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NBV3933/ |
in. |
39 |
34-7/8 |
19-5/8 |
NBV3933I |
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mm |
991 |
886 |
498 |
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NBV4236/ |
in. |
42 |
34-7/8 |
19-5/8 |
NBV4236I |
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mm |
1067 |
886 |
498 |
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NBV4842/ |
in. |
48 |
34-7/8 |
19-5/8 |
NBV4842I |
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mm |
1219 |
886 |
498 |
Figure 3.2 Clearances to Combustibles
10 |
Heatilator • Novus NBV • 4055-188 Rev C • 04/08 |
D. Mantel Projections
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30 in. minimum |
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to ceiling |
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7- |
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3 5-1/26-1/4
5
Measured from top of hood (in inches)
Figure 3.3 Clearances to Mantels or Other Combustibles Above Appliance
Top of
Appliance
Drywall
A
B
Mantel Leg or
Perpendicular Wall
A1 in. (25 mm) min. to perpendicular wall
B3-1/2 in. (89 mm) min. from fireplace opening to perpendicular wall
Figure 3.4 Clearances to Combustible Mantel Legs or Wall Projections (acceptable on both sides of opening)
WARNING
Fire Risk
•Comply with all minimum clearances to combustibles as specified.
•Framing or finishing 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 fire.
Heatilator • Novus NBV • 4055-188 Rev C • 04/08 |
11 |
4 Termination Locations
A. Vent Termination Minimum Clearances
WARNING
Fire Risk
Explosion Risk
Maintain vent clearance to combustibles as
specified.
•Do not pack air space with insulation or other materials.
Failure to keep insulation or other materials away from vent pipe may cause fire.
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8 ft |
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(2.44 m) |
Vertical |
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Lowest |
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wall |
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Discharge |
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Termination |
Opening |
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Cap |
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Storm Collar |
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X |
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12 |
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Roof |
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Flashing |
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Roof Pitch |
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is X / 12 |
H (min.) - Minimum height from roof to lowest discharge opening.
Roof Pitch |
H (Min.) Ft. |
Roof Pitch |
H (Min.) Ft. |
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Flat to 6/12 |
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1.0* |
Over 11/12 to 12/12 |
4.0 |
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Over 6/12 to 7/12 |
1.25* |
Over 12/12 to 14/12 |
5.0 |
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Over 7/12 to 8/12 |
1.5* |
Over 14/12 to 16/12 |
6.0 |
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Over 8/12 to 9/12 |
2.0* |
Over 16/12 to 18/12 |
7.0 |
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Over 9/12 to 10/12 |
2.5 |
Over 18/12 to 20/12 |
7.5 |
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Over 10/12 to 11/12 |
3.25 |
Over 20/12 to 21/12 |
8.0 |
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* 3 ft. minimum in snow regions |
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B-Vent Gas, Wood or Fuel
Oil Termination
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8 ft |
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A |
(2.44 m) |
18 in. |
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(minimum) to |
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Perpendicular |
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(457 mm) |
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Wall |
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(gas only) |
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Gas |
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Termination |
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Termination Caps Staggered Height
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A |
Gas Termination |
Wood or Fuel Oil Termination |
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B |
6 in. (152 mm) min. |
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20 in. (508 mm) min. |
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B-Vent Gas, Wood or Fuel |
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Oil Termination |
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8 ft |
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(2.44 m) |
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(minimum) to |
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Wood or |
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20 in. min. * |
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Gas Termination |
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(508 mm) |
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Wall |
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(gas only) |
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Termination Caps Same Height
*If using decorative cap cover(s), this distance may need to be increased. Refer to the installation instructions supplied with the decorative cap cover.
Figure 4.2 Multiple Vertical Termination
Figure 4.1 Minimum Height from Roof to Lowest Discharge Opening
Figure 4.1 specifies minimum vent heights for various pitched roofs.
12 |
Heatilator • Novus NBV • 4055-188 Rev C • 04/08 |
5 Vent Information and Diagrams
A. Vent Guidelines |
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B. Vent System Configuration |
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• Rise to Run Ratio: 2:1 |
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WARNING |
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• Maximum Total Horizontal Run: 30 ft (9.14 m) |
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• Minimum Total Vertical Rise: 12 ft (3.66 m) |
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Fire Risk |
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• Maximum Total Vertical Rise: 60 ft (18.29 m) |
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Asphyxiation Risk |
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• Maximum Number of Elbows: Four 90° or Eight 45° |
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This appliance requires the specified pipe |
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Minimum |
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for operation. |
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clearances are |
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• Incorrect pipe may cause spillage, |
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per vent |
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condensation and overheating. |
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manufacturer's |
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These models require the following size B-Vent double wall |
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specifications |
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vent pipe. |
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Metal |
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plumber's strap |
Model |
Pipe Size |
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12 ft (3.66 m) min. |
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secured to |
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NBV3630/NBV3630I/NBV3933/NBV3933I |
5 in. (127 mm) |
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60 ft (18.29 m) max. |
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framing |
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NBV4236/NBV4236I/NBV4842/NBV4842I |
5 in. (127 mm) |
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Vent supports are per |
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• Follow pipe manufacturer’s installation guidelines when |
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vent manufacturer's |
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installing the appliance. |
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specifications |
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WARNING |
Figure 5.1 Vertical Termination Clearances |
Fire Risk |
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Explosion Risk |
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Asphyxiation Risk |
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Do NOT connect this gas appliance to a |
Vent supports |
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chimney flue serving a separate solid-fuel |
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or gas burning appliance. |
are per vent |
Metal |
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• Vent this appliance directly outside. |
manufacturer’s |
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• |
Use separate vent system for this |
specifications. |
Plumbers' |
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appliance. |
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Strap |
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May impair safe operation of this appliance or |
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other appliances connected to the flue. |
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Maximum horizontal run is 50% of |
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CAUTION |
vertical. Horizontal run cannot be |
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more than 30 ft. (9.14 m). |
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ALL vent configuration specifications MUST be |
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followed. |
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• This product is tested and listed to appliance and |
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vent manufacturer’s specifications. |
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• Appliance performance will suffer if specifications |
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are not followed. |
Figure 5.2 Maximum Horizontal Run |
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|
Heatilator • Novus NBV • 4055-188 Rev C • 04/08 |
13 |
WARNING
Fire Risk Explosion Risk
Insulation and other combustibles must not infringe on clearances.
•ALWAYS maintain specified clearances around venting and firestop systems.
•Install firestops as specified.
Failure to keep insulation or other material away from vent pipe may cause fire.
Maximum horizontal 30 ft (9.14 m)
45° |
Offsets exceeding |
Elbow |
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45° adapt horizontal |
90° |
limitations |
Elbow |
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Note: Maximum horizontal |
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distance is 50% of vertical |
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vent height. |
Figure 5.3 Maximum Horizontal Run
14 |
Heatilator • Novus NBV • 4055-188 Rev C • 04/08 |
6 Vent Clearances and Framing
A. Pipe Clearances to Combustibles
WARNING
Fire Risk Explosion Risk
Maintain vent clearance to combustibles as specified.
•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 fire.
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 firestops 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 NBV • 4055-188 Rev C • 04/08 |
15 |
7 |
Appliance Preparation |
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CAUTION |
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CAUTION |
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Outside air inlet must be located to prevent blockage |
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Leaves |
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Snow/ice |
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A. Installing Outside Air Kit Damper Assembly |
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Other debris |
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Blockage may cause combustion air starvation. |
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WARNING
Fire Risk Asphyxiation Risk
Maintain vent clearance to combustibles as specified.
•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 fire.
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, floor 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 |
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NO |
NO |
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Garage or |
NO |
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Outlet blocked by |
combustible |
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snow, leaves, etc. |
liquids storage |
Attic space |
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NO |
YES
Clear area outside house or in ventilated crawl space
Outlet placed higher than 3 ft below the termination cap
Factory-built
fireplace
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).
Figure 7.2 Outside Combustion Air Placement
16 |
Heatilator • Novus NBV • 4055-188 Rev C • 04/08 |
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 flush with the framing.
•Secure the appliance to the framing by using nails or screws through the nailing tabs.
CAUTION
Do NOT notch into the framing around the appliance spacers.
Nailing Flanges |
(both sides) |
Figure 7.3 Proper Positioning, Leveling and Securing of an |
Appliance |
Heatilator • Novus NBV • 4055-188 Rev C • 04/08 |
17 |