Heatilator NBV3630I User manual

Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/09 1
Model(s):
NBV3630I, NBV3933I,
NBV4236I, NBV4842I
B-Vent Gas Appliance
Owner’s Manual
Installation and Operation
DO NOT DISCARD THIS MANUAL
NOTICE
• Leave this manual with
party responsible for use
and operation.
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.
• Important operating
and maintenance
instructions included.
• Read, understand and follow
these instructions for safe
installation and operation.
• DO NOT store or use gasoline or other flam-
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 suppli-
er’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.
WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury, or death.
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
in installed.
WARNING
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.
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
fireplace.
• Alert children and adults to hazards of high temperatures.
High temperatures may ignite clothing or other flammable
materials.
• Keep clothing, furniture, draperies and other flammable
materials away.
DO NOT
DO NOT
DISCARD
DISCARD
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Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/092
Listing Label Information/Location
Model Name: ___________________________________________ Date purchased/installed:__________________
Serial Number:__________________________________________ Location on fireplace: _____________________
Dealership purchased from: _______________________________ Dealer Phone: __________________________
Notes: _______________________________________________________________________________________
_____________________________________________________________________________________________
A. Congratulations
Congratulations on selecting a Heatilator gas fireplace,
an elegant and clean alternative to wood burning fire-
places. The Heatilator gas fireplace you have selected is
designed to provide the utmost in safety, reliability, and
efficiency.
As the owner of a new fireplace, 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 that 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 fireplace will give you years of
durable use and trouble-free enjoyment. Welcome to the
Heatilator family of fireplace products!
We recommend that you record the following pertinent
information about your fireplace.
The model information regarding your specific fireplace can be found on
the rating plate usually located in the control area of the fireplace.
Homeowner Reference Information
Read this manual before installing or operating this appliance.
Please retain this owner’s manual for future reference.
XXXX
CERTIFIED
FOR CANADA
CERTIFIÉ POUR LE
CANADA
Hearth & Home Technologies Inc
1915 W. Saunders Street
Mt. Pleasant, IA 52641
SERIAL
NO. DE SÉRIE
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
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.
XXXXXXXXX
XXXXXX
Serial #
Gas Type
Orifice
Size
Model #
Î= Contains updated information.

Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/09 3
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.
Table of Contents
A. Congratulations 2
B. Warranty 4
1 Listing and Code Approvals
A. Appliance Certification 6
B. Tempered Glass Specifications 6
C. BTU Specifications 7
D. High Altitude Installations 7
E. Non-Combustible Materials Specification 7
F. Combustible Materials Specification 7
G. Electrical Codes 7
User Guide
2 Operating Instructions
A. Gas Fireplace Safety 8
B. Your Fireplace 8
C. Fan Kit (optional) 9
D. Clear Space 9
E. Decorative Doors and Fronts 9
F. Fixed Glass Assembly 9
G. Remote Controls, Wall Controls and Wall Switches 9
H. Outside Air (optional) 9
I. Before Lighting Fireplace 9
J. Lighting Instructions (IPI) 10
K. After Fireplace is Lit 11
L. Frequently Asked Questions 11
3 Maintenance and Service
A. Maintenance Tasks-Homeowner 12
B. Maintenance Tasks-Qualified Service Technician 13
Installer Guide
4 Getting Started
A. Typical Appliance System 15
B. Design and Installation Considerations 16
C. Tools and Supplies Needed 16
D. Inspect Appliance and Components 16
E. Negative Pressure 17
5 Framing and Clearances
A. Selecting Appliance Location 18
B. Constructing the Appliance Chase 19
C. Clearances 19
D. Mantel and Wall Projections 20
6 Termination Locations
A. Vent Termination Minimum Clearances 21
7 Vent Information and Diagrams
A. Vent Guidelines 22
B. Vent System Configuration 22
8 Vent Clearances and Framing
A. Pipe Clearances to Combustibles 23
B. Wall and Ceiling Penetration Framing 23
C. Vertical Penetration Framing 23
9 Appliance Preparation
A. Installing Outside Air Kit Damper Assembly 24
B. Gas and Electrical Connections 24
C. Securing and Leveling the Appliance 24
10 Installing Vent Pipe
A. Assembly of Vent Sections 25
B. Attaching Vent to Firebox 25
C. Securing Vent Sections 25
D. Install Attic Insulation Shield 25
11 Gas Information
A. Fuel Conversion 26
B. Gas Pressure 26
C. Gas Connection 26
D. High Altitude Installations 26
12 Electrical Information
A. Wiring Requirements 27
B. Intellifire Ignition System Wiring 27
C. Optional Accessories Requirements 27
D. Electrical Service and Repair 28
D. Junction Box Installation 29
E. Wall Switch Installation for Fan (Optional) 29
13 Finishing
A. Mantel and Wall Projections 30
B. Facing Material 31
14 Appliance Setup
A. Remove the Packaging 32
B. Remove Screen Package Assembly 32
C. Remove the Shipping Materials 32
D. Removing Fixed Glass Assembly 32
E. Clean the Appliance 32
F. Accessories 32
G. Place the Rockwool 33
H. Place the Lava Rock 33
I. Place the Vermiculite 33
J. Replacing Fixed Glass Assembly 33
K. Air Shutter Setting 33
L. Remove Screen Protector 34
M. Unpackage the Hood & Floor Cover 34
N. Install Hood 34
O. Install Floor Cover 34
P. Close the Screen Assembly 35
15 Troubleshooting
A. Intellifire Ignition System 36
16 Reference Materials
A. Appliance Dimension Diagram 38
B. Service Parts List 39
C. Optional Components 45
D. Contact Information 48

Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/094
B. Warranty

Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/09 5
B. Warranty (continued)

Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/096
B. Tempered 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.
MODELS: NBV3630I, NBV3933I, NBV4236I, NBV4842I
LABORATORY: Underwriters Laboratories, Inc. (UL)
TYPE: Vented Gas Fireplace Heater
STANDARD: ANSI Z21.88b-2008/CSA 2.33b-2008
A. Appliance Certification
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 fac-
tored as primary heat in residential heating calculations.
NOTICE: This installation must conform with local codes
or, in the absence of local codes, with the National Fuel
Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and
Propane Installation Code, CSA B149.1.
1
1 Listing and Code Approvals
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Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/09 7
C. BTU Specifications E. Non-Combustible Materials Specification
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 ºC and UL763 shall be considered
non-combustible materials.
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 feet elevation:
• In the USA: Reduce input rate 4% for each 1000 feet
above 2000 feet.
• In CANADA: Reduce input rate 10% for elevations
between 2000 feet and 4500 feet. Above 4500 feet,
consult local gas utility.
Check with your local gas utility to determine proper
orifice size.
G. Electrical Codes
NOTICE: 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.
• A 110-120 VAC circuit for this product must be protected
with ground-fault circuit-interrupter protection, in
compliance with the applicable electrical codes, when
it is installed in locations such as in bathrooms or near
sinks.
F. Combustible Materials Specification
Materials made of or surfaced with wood, compressed
paper, plant fibers, plastics, or other material that can ig-
nite and burn, whether flame proofed or not, or plastered
or unplastered shall be considered combustible materials.
Novus NBV NBV3630 NBV3933
IPI
Max/Min Input Rate (NG) 20,000/14,000 22,000/15,000
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
IPI
Max/Min Input Rate (NG) 25,000/17,000 30,000/20,500
Orifice Size (NG) 0.093 (#42) 0.104 (#37)
Max/Min Input Rate (LP) 25,000/17,000 30,000/20,500
Orifice Size (LP) 0.058 0.063 (#52)
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Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/098
2
2 Operating Instructions
Figure 2.1 General Operating Parts
Mesh Door
Section 2.E.
Outside Air Kit
Section 2.H.
(must open mesh
door to access
handle)
Fixed Glass Assembly
(not shown)
Section 14.J.
Grate
(not shown) Mantel
Hearth
(not required)
Clear Space
Section 2.D.
B. Your Fireplace
WARNING! DO NOT operate fireplace before reading
and understanding operating instructions. Failure
to operate fireplace according to operating instructions
could cause fire or injury.
If you expect that small children or vulnerable adults may
come into contact with this fireplace, the following precau-
tions are recommended:
• Install a physical barrier such as:
- A decorative firescreen.
- Adjustable safety gate.
• Install a switch lock or a wall/remote control with child
protection lockout feature.
• Keep remote controls out of reach of children.
WARNING
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.
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
fireplace.
• Alert children and adults to hazards of high temperatures.
High temperatures may ignite clothing or other flammable
materials.
• Keep clothing, furniture, draperies and other flammable
materials away.
• Never leave children alone near a hot fireplace, whether
operating or cooling down.
• Teach children to NEVER touch the fireplace.
• Consider not using the fireplace when children will be
present.
Contact your dealer for more information, or visit: www.
hpba.org/staysafe.
To prevent unintended operation when not using your
fireplace for an extended period of time (summer months,
vacation, trips, etc):
• Remove batteries from remote controls.
• Turn off wall controls.
• Unplug 3 volt adapter plug and remove batteries on IPI
models.
A. Gas Fireplace Safety
User Guide

Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/09 9
CLEAR SPACE
3 FT. IN FRONT OF FIREPLACE
D. Clear Space
WARNING! DO NOT place combustible objects in
front of the fireplace or block louvers. High tempera-
tures may start a fire. See Figure 2.2.
Avoid placing candles and other heat-sensitive objects on
mantel or hearth. Heat may damage these objects.
Figure 2.2 Clear Space
H. Outside Air (optional)
The outside air kit supplies some fresh combustion air for
your fireplace. It may help reduce the effects of negative
air pressure. (See Section 4.E..)
• Refer to Figure 2.1 for location of control.
- Lift up on lever and pull forward to open outside air.
• Close the inlet to prevent cold drafts when the fireplace
is not being used.
CAUTION! Risk of Burns! The outside air control handle
is HOT when fireplace is in operation. Adjust BEFORE
lighting fire.
C. Fan Kit (optional)
• Refer to Figure 2.1 for location of control.
F. Fixed Glass Assembly
See Section 14.J.
E. Decorative Doors and Fronts
WARNING! Risk of Fire! Install ONLY doors or fronts
approved by Hearth & Home Technologies. Unapproved
doors or fronts may cause fireplace to overheat.
This fireplace has been supplied with an integral barrier
to prevent direct contact with the fixed glass panel. DO
NOT operate the fireplace 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.
For more information refer to the instructions supplied
with your decorative door or front.
G. Remote Controls, Wall Controls and Wall
Switches
Follow the instructions supplied with the control installed
to operate your fireplace:
I. Before Lighting Fireplace
Before operating this fireplace for the first time, have a
qualified service technician:
• Verify all shipping materials have been removed from
inside and/or underneath the firebox.
• Review proper placement of logs, ember material and/or
other decorative materials.
• Check the wiring.
• Check the air shutter adjustment.
• Ensure that there are no gas leaks.
• Ensure that the glass is sealed and in the proper position
and that the integral barrier is in place.
WARNING! RISK OF Fire/Asphyxiation! DO NOT operate
fireplace with fixed glass assembly removed.
For safety:
• Install a switch lock or a wall/remote control with child
protection lockout feature.
• Keep remote controls out of reach of children.
See your dealer if you have questions.

Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/0910
J. Lighting Instructions (IPI)
• For normal use, activate/deactivate your fireplace with the wall switch or remote control.
• The IPI system may be operated with two D-cell batteries. When using batteries, unplug the transformer. To prolong
battery life, remove them when using the transformer.
• If your fireplace must be deactivated for serviced or an extended period of time, follow the instructions below.
A. This appliance is equipped with an ignition device which
automatically lights the pilot. Do not try to light the pilot by
hand.
B. BEFORE LIGHTING smell all around the appliance area for
gas. Be sure to smell next to the floor because some gas is
heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric 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.
LIGHTING INSTRUCTIONS
1. STOP! Read the safety information above on this label.
2. Turn wall switch to the "OFF" position or thermostat to the
lowest setting.
3. Turn off all electric power to the appliance.
4. This appliance is equipped with an ignition device which
automatically lights the pilot. Do NOT try to light the pilot by
hand.
5. Wait five minutes to clear out any gas. If you then smell gas, STOP!
Follow "B" in the safety information above on this label. If you don't
smell gas, go to the next step.
6. To turn on the burner, turn on all electric power to this appliance and
turn on the wall switch or set the thermostat to the desired setting.
7. If the appliance will not operate, follow the instructions "TO TURN OFF
GAS TO APPLIANCE" and call your service technician or gas supplier.
TO TURN OFF GAS TO APPLIANCE
1. Turn off wall switch or set thermostat to lowest setting.
2. Turn off all electric power to the appliance if service is to be
performed.
3. Push the gas control lever in and move to the "OFF" position
or push the gas control lever to the "OFF" position. Do not
force.
4. Replace the control access panel.
Due to high surface temperatures, keep children, clothing and furniture away.
Keep burner and control compartment clean. See installation and operating instructions accompanying the appliance.
WARNING: If you do not follow these instructions exactly, a fire
or explosion may result causing property damage,
personal injury or loss of life.
FOR YOUR SAFETY READ BEFORE LIGHTING
33631D
C. Use only your hand to push in and move the gas control
valve or turn the gas control knob. Never use tools. If the
lever or knob will not move by hand, don't try to repair it, call
a qualified service technician. Force or attempted repair may
result in a fire or explosion.
D. 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.
This appliance needs fresh air for safe operation
and must be installed so there are provisions for
adequate combustion and ventilation air.
This appliance must be installed in accordance with
local codes, if any; if not, follow ANSI Z223.1 or, in
Canada, current CAN/CGA-B149.
WARNING: Improper installation,
adjustment, alteration, service or maintenance can
cause injury or property damage. Refer to the
owner's information manual provided with the
appliance. For assistance or additional information
consult a qualified installer, service agency or the
gas supplier.
CAUTION: Hot while in operation. Do
not touch. Keep children, clothing, furniture,
gasoline and other liquids having flammable vapors
away.
WARNING RISK OF FIRE
This appliance is intended to burn a specified gas
fuel only. Do not attempt to use with solid wood fuel
or another type of fuel. Do not attempt to modify or
use any other type of gas burner system.
* Also certified for installation in a bedroom or a
bed-sitting room.
* For U.S. only!
WARNING: Disconnect the electric power
before servicing. If for any reason the original wire
supplied with the appliance must be replaced, it must
be replaced with 105° C or its equivalent.
For use with natural gas or propane. A conversion kit
as supplied by the manufacturer shall be used to
convert this appliance to the alternative fuel.
This appliance must be properly connected to a
venting system in accordance with the
manufacturer's installation instructions.
NATURAL GAS

Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/09 11
Initial Break-in Procedure
• The fireplace should be run three to four hours
continuously on high.
• Turn the fireplace off and allow it to completely cool.
• Remove fixed glass assembly. See Section 14.J.
• Clean fixed glass assembly. See Section 3.
• Replace the fixed glass assembly and run continuously
on high an additional 12 hours.
This cures the materials used to manufacture the fire-
place.
NOTICE! Open windows for air circulation during fireplace
break-in.
• Some people may be sensitive to smoke and
odors.
• Smoke detectors may activate.
K. After Fireplace is Lit
L. Frequently Asked Questions
ISSUE SOLUTIONS
Condensation on the glass This is a result of gas combustion and temperature variations. As the fireplace warms, this
condensation will disappear.
Blue flames This is a result of normal operation and the flames will begin to yellow as the fireplace is al-
lowed to burn for 20 to 40 minutes.
Odor from fireplace
When first operated, this fireplace may release an odor for the first several hours. This is
caused by the curing of materials from manufacturing. Odor may also be released from
finishing materials and adhesives used near the fireplace. These circumstances may require
additional curing related to the installation environment.
Film on the glass This is a normal result of the curing process of the paint and logs. Glass should be cleaned
within 3 to 4 hours of initial burning. A non-abrasive cleaner such as gas appliance glass
cleaner may be necessary. See your dealer.
Metallic noise
Noise is caused by metal expanding and contracting as it heats up and cools down, similar to
the sound produced by a furnace or heating duct. This noise does not affect the operation or
longevity of the fireplace.

Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/0912
Glass Cleaning
Frequency: Seasonally
By: Homeowner
Tools Needed: Protective gloves, glass cleaner, drop cloth
and a stable work surface.
CAUTION! Handle fixed glass assembly with care.
Glass is breakable.
• Avoid striking, scratching or slamming glass
• Avoid abrasive cleaners
•DO NOT clean glass while it is hot
•Prepare a work area large enough to accommodate fixed
glass assembly and door frame by placing a drop cloth
on a flat, stable surface.
Note: Fixed glass assembly and gasketing may have residue that
can stain carpeting or floor surfaces.
• Remove door or decorative front from fireplace and set
aside on work surface.
• See Section 14.J for instructions to remove fixed glass
assembly.
• Clean glass with a non-abrasive commercially available
cleaner.
- Light deposits: Use a soft cloth with soap and
water
- Heavy deposits: Use commercial fireplace glass
cleaner (consult with your dealer)
• Carefully set fixed glass assembly in place on fireplace.
Hold glass in place with one hand and secure glass
latches with the other hand.
• Reinstall door or decorative front.
3
3 Maintenance and Service
A. Maintenance Tasks-Homeowner
The following tasks may be performed annually by the
homeowner. If you are uncomfortable performing any of
the listed tasks, please call your dealer for a service ap-
pointment.
More frequent cleaning may be required due to lint from
carpeting or other factors. Control compartment, burner
and circulating air passageway of the fireplace must be
kept clean.
CAUTION! Risk of Burns! The fireplace should be
turned off and cooled before servicing.
When properly maintained, your fireplace will give you
many years of trouble-free service. We recommend an-
nual service by a qualified service technician.
Doors, Surrounds, Fronts
Frequency: Annually
By: Homeowner
Tools needed: Protective gloves, stable work surface
• Assess condition of screen and replace as necessary.
• Inspect for scratches, dents or other damage and repair
as necessary.
• Check that louvers are not blocked.
• Vacuum and dust surfaces.
Any safety screen or guard removed for servicing must be
replaced prior to operating the fireplace.
Installation and repair should be done by a qualified service
technician only. The fireplace should be inspected before use
and at least annually by a professional service person.
Remote Control
Frequency: Seasonally
By: Homeowner
Tools needed: Replacement batteries and remote control in-
structions.
• Locate remote control transmitter and receiver.
• Verify operation of remote. Refer to remote control
operation instructions for proper calibration and setup
procedure.
• Place batteries as needed in remote transmitters and
battery-powered receivers.
• Place remote control out of reach of children.
If not using your fireplace for an extended period of time
(summer months, vacations/trips, etc), to prevent unin-
tended operation:
• Remove batteries from remote controls.
• Unplug 3 volt adapter plug on IPI models.

Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/09 13
Venting
Frequency: Seasonally
By: Homeowner
Tools needed: Protective gloves and safety glasses.
• Inspect venting and termination cap for blockage or
obstruction such plants, bird nests, leaves, snow, debris,
etc.
• Verify termination cap clearance to subsequent
construction (building additions, decks, fences, or
sheds). See Section 6.
• Inspect for corrosion or separation.
• Verify weather stripping, sealing and flashing remains
intact.
• Inspect draft shield to verify it is not damaged or missing.
Burner Ignition and Operation
Frequency: Annually
By: Qualified Service Technician
Tools needed: Protective gloves, vacuum cleaner, whisk
broom, flashlight, voltmeter, indexed drill bit set, and a manom-
eter.
• Verify burner is properly secured and aligned with
igniter.
• Clean off burner top, inspect for plugged ports, corrosion
or deterioration. Replace burner if necessary.
• Replace ember materials with new dime-size pieces.
DO NOT block ports or obstruct lighting paths. Refer to
Section 14.G. for proper rockwool placement.
• Verify batteries have been removed from battery back-
up IPI systems to prevent premature battery failure or
leaking.
• Check for smooth lighting and ignition carryover to all
ports. Verify that there is no ignition delay.
• Inspect for lifting or other flame problems.
• Verify air shutter setting is correct. See Section 14.L.
for required air shutter setting. Verify air shutter is clear
of dust and debris.
• Inspect orifice for soot, dirt and corrosion. Verify orifice
size is correct. See Service Parts List for proper orifice
sizing.
• Verify manifold and inlet pressures. Adjust regulator as
required.
• Inspect pilot flame pattern and strength. See Figure 3.1
and 3.2 for proper pilot flame pattern. Clean or replace
orifice spud as necessary.
• Inspect IPI flame sensing rod for soot, corrosion and
deterioration. Clean with emery cloth or replace as
required.
• Verify that there is not a short in flame sense circuit by
checking continuity between pilot hood and flame sense
rod. Replace pilot as necessary. (IPI only)
Control Compartment and Firebox Top
Frequency: Annually
By: Qualified Service Technician
Tools needed: Protective gloves, vacuum cleaner, dust cloths
• Vacuum and wipe out dust, cobwebs, debris or pet hair.
Use caution when cleaning these areas. Screw tips that
have penetrated the sheet metal are sharp and should
be avoided.
• Remove all foreign objects.
• Verify unobstructed air circulation.
Firebox
Frequency: Annually
By: Qualified Service Technician
Tools needed: Protective gloves, sandpaper, steel wool,
cloths, mineral spirits, primer and touch-up paint.
• Inspect for paint condition, warped surfaces, corrosion
or perforation. Sand and repaint as necessary.
• Replace fireplace if firebox has been perforated.
Logs
Frequency: Annually
By: Qualified Service Technician
Tools needed: Protective gloves.
• Inspect for damaged or missing logs. Replace as
necessary.
• Verify correct log placement and no flame impingement
causing sooting. Correct as necessary.
B. Maintenance Tasks-Qualified Service
Technician
The following tasks must be performed by a qualified
service technician.
Gasket Seal and Glass Assembly Inspection
Frequency: Annually
By: Qualified Service Technician
Tools needed: Protective gloves, drop cloth and a stable work
surface.
• Inspect gasket seal and its condition.
• Inspect fixed glass assembly for scratches and nicks
that can lead to breakage when exposed to heat.
• Confirm there is no damage to glass or glass frame.
Replace as necessary.
• Verify that fixed glass assembly is properly retained and
attachment components are intact and not damaged.
Replace as necessary.

Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/0914
Figure 3.1 IPI Pilot Flame Patterns

Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/09 15
A. Typical Appliance System
NOTICE: Illustrations and photos reflect typical installations and are for design purposes only. Illustrations/diagrams are not
drawn to scale. Actual product may vary from pictures in manual
Noncombustible roof
flashing maintains minimum
clearance around pipe
Ceiling Firestop
on floor of attic
Listed B-Vent Pipe
Framing/Header
(SECTION 5)
Gas Line
(SECTION 11)
Framing Headed off
in Ceiling Joists
(SECTION 8)
Mantel & Mantel Leg
(SECTION 13)
Surround
Hearth Extension
(not required)
Optional
Wall Switch
Vertical Termination Cap
Storm Collar
Attic insulation shield (not shown) must be used here to
keep insulation away from vent pipe if attic is insulated.
Vent pipe penetrates roof,
preferably without affecting
roof rafters
Figure 4.1 Typical System
4
4 Getting Started
Installer Guide

Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/0916
B. Design and Installation Considerations
Heatilator B-type 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.
Installation MUST comply with local, regional, state and
national codes and regulations. Consult insurance carrier,
local building inspector, fire officials 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 configuration to be used.
• Gas supply piping.
• Electrical wiring requirements.
• Framing and finishing details.
• Whether optional accessories—devices such as a fan,
wall switch, or remote control—are desired.
D. Inspect Appliance and Components
The following B-vent components are needed for installa-
tion.
• Fireplace Box
• 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 decorative doors and
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,
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.
WARNING! Risk of Fire or Explosion! Damaged parts
could impair safe operation. DO NOT install damaged,
incomplete or substitute components. Keep appliance dry.
C. Tools and Supplies Needed
Before beginning the installation be sure that the follow-
ing tools and building supplies are available.
Tape measure Framing material
Pliers High temperature caulking
material
Hammer Phillips screwdriver
Gloves Framing square
Voltmeter Electric drill and bits (1/4 in.)
Plumb line Safety glasses
Level Reciprocating saw
Manometer Flat blade screwdriver
Noncorrosive leak check solution
1/2 - 3/4 in. length, #6 or #8 Self-drilling screws
One 1/4 in. female connection (for optional fan).
WARNING! Risk of Fire, Explosion or Electric Shock!
DO NOT use this appliance if any part has been under wa-
ter. Call a qualified service technician to inspect the appli-
ance and to replace any part of the control system and/or
gas control which has been under water.
Improper installation, adjustment, alteration, service or
maintenance can cause injury or property damage. For
assistance or additional information, consult a qualified
service technician, service agency or your dealer.
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 B-Vent Series • 4055-188 • Rev G • 03/09 17
Recommended
Location
Marginal
Location
Location
Not
Recommended
Recommended
Location
Multi-level Roofs
Windward
Leeward
Location
Not
Recommended
Figure 4.2
E. Negative Pressure
WARNING! Asphyxiation Risk! Negative pressure can
cause spillage of combustion fumes and soot. Fireplace
needs to draft properly for safety.
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 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 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 fol-
lowing must be considered:
• Install the fresh 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 of “sealed can” design; attic
hatches weather stripped or sealed; and attic mounted
ductwork 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 perfor-
mance. As shown in Figure 4.2, the chimney should:
• Be installed through the warm space 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 mini-
mized. Consider the fireplace location relative to floor
and ceiling and attic joists.

Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/0918
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
A
A
C
B
B
1/2 in. (13 mm) min.
appliance
to combustibles
Alcove
Installation
C
D
Drywall 48 in.
(1219 mm)
max.
ABCD
inches 36 33-1/2 19-5/8 37
mm 914 851 498 940
inches 39 35-1/2 19-5/8 40
mm 991 902 498 1016
inches 42 37-5/8 19-5/8 43
mm 1067 956 498 1092
inches 48 41-7/8 19-5/8 49
mm 1219 1064 498 1245
NBV4842I
Model
NBV3630I
NBV3933I
NBV4236I
5
5 Framing and Clearances
A. Selecting Appliance Location
When selecting a location for the appliance it is important
to consider the required clearances to walls (see Figure
5.1).
WARNING! Risk of Fire or Burns! Provide adequate
clearance around air openings and for service access. Due
to high temperatures, the appliance should be located out
of traffic and away from furniture and draperies.
NOTICE: 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.
Figure 5.1 Appliance Locations
Î

Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/09 19
Per
Manufacturer’s
Specifications
C
B
A
32-1/2 in.
(826 mm)
to ceiling
0 in.
0 in. TO LEVEL
OF STANDOFFS
1/2 in.
(13 mm)
Drywall
0 in.
1/2 in.
(13 mm)
Combustible Object
36 in.
(914 mm)
Combustible flooring may be installed
next to the front of the appliance.
A
Rough Opening
(Width)
B
Rough Opening
(Height)
C
Rough Opening
(Depth)
in. 36 34-7/8 19-5/8
mm 914 886 498
in. 39 34-7/8 19-5/8
mm 991 886 498
in. 42 34-7/8 19-5/8
mm 1067 886 498
in. 48 34-7/8 19-5/8
mm 1219 886 498
NBV4842I
Model
NBV3630I
NBV3933I
NBV4236I
B. Constructing the Appliance Chase
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 enclosed inside the chase.
NOTICE: Treatment of ceiling firestops and wall shield
firestops 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.
Chases should be constructed in the manner of all out-
side walls of the home to prevent cold air drafting prob-
lems. 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, in regions where cold
air infiltration may be an issue, the inside surfaces may
be sheetrocked and taped for maximum air tightness. To
further prevent drafts, the wall shield and ceiling fire-
Figure 5.2 Clearances to Combustibles
C. Clearances
NOTICE: Install appliance on hard metal or wood surfaces
extending full width and depth. DO NOT install directly on
carpeting, vinyl, tile or any combustible material other than
wood.
WARNING! Risk of Fire! Maintain specified 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 fireplace or chimney.
• Failure to maintain airspace may cause overheating and
a fire.
stops should be caulked with high temperature caulk to
seal gaps. 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, a layer of plywood may be placed underneath to
prevent conducting cold up into the room.
Note: If the inside of the framed cavity is to be finished, the framing dimensions must include the finished surface. Example: If
drywall is to be attached to the rear wall, the depth must be measured from the drywall surface.
Î

Heatilator • Novus B-Vent Series • 4055-188 • Rev G • 03/0920
Measured from top of hood (in inches)
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
55-1/26-1/4
7
7-3/4
8-1/2
9-1/4 10
10-3/4
11-1/2
12-1/4
13
13-3/4
14-1/2
15-1/4
16
30 in. minimum
to ceiling
D. Mantel and Wall Projections
WARNING! Risk of Fire! Comply with all minimum clear-
ances as specified. Framing or finishing material closer
than the minimums listed must be constructed entirely
of noncombustible materials (i.e., steel studs, concrete
board, etc).
Figure 5.3 Minimum Vertical and Maximum Horizontal Dimensions of Combustibles
Mantels
Figure 5.4 Combustible Mantel Leg or Wall Projections
(Acceptable on both sides of opening)
Mantel Legs or Wall Projections
1 in. (25 mm) min.
to perpendicular wall
A
3-1/2 in. (89 mm) min.
from fireplace opening
to perpendicular wall
B
Mantel Leg or
Perpendicular Wall
Top of
Appliance
Drywall
A
B