Heatilator NOVUS GNBC30 User manual

12-02 1 34615 Rev G
INSTALLATION & OPERATING
INSTRUCTIONS
NOVUS SERIES
B-VENT GAS APPLIANCE
GNBC30, 33, & 36
WARNING!
Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this
manual. For assistance or additional information, consult a qualified installer, service agency or the gas supplier.
CAUTION:
Do not expose appliance to the elements (such as rain, etc.).
WARNING: If the information in this manual
is not followed exactly a fire or explosion may
result causing property damage personal in-
jury or loss of life.
 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. ollow 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

34615 Rev G 2 12-02
NOVUS B-VENT INSTALLATION INSTRUCTIONS
WARNING!
D N T 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.
1. Please read these installation instructions
completely before beginning installation
procedures. Failure to follow them could cause an
appliance malfunction resulting in serious injury
and/or property damage.
2. Always check your local building codes prior to
installation. This installation must comply with all
local, regional, state and national codes and
regulations.
3. Installation and repair should be done by a qualified
service person. This appliance should also be
inspected annually by a qualified service person.
More frequent inspections/cleaning may be
required due to excessive lint from carpeting,
bedding materials, etc. It is imperative that the
control compartment, burners and circulating air
passageways of the appliance be kept clean.
4. This is a vented decorative gas appliance. Do not
burn wood or other material in this appliance.
5. NEVER leave children unattended when there is a
fire burning in the appliance.
6. This appliance may only use the approved venting
systems shown in these installation instructions.
Venting must not be connected to chimney flue
servicing a solid fuel burning appliance or a gas
fuel burning appliance.
7. NEVER use gasoline, gasoline-type lantern fuel,
kerosene, charcoal lighter fluid, or similar liquids
in this appliance. Keep any flammable liquids a safe
distance from the appliance.
8. While servicing this appliance, always shut off all
electricity and gas to the appliance. This will
prevent possible electrical shock or burns. Also,
make sure the appliance is completely cooled
before servicing.
9. 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.
10. Be sure to provide adequate clearances around the
air openings into the combustion chamber and
adequate accessibility clearances for servicing and
proper operation.
SAFETY PRECAUTIONS
TABLE OF CONTENTS
Design and Installation Considerations for B-Vents ...................................................................................................... 3
A. Applicance Specifications ............................................................................................................................................ 4
B. Location and Clearances .............................................................................................................................................. 5
C. raming ......................................................................................................................................................................... 6
D. Setting the Appliance .................................................................................................................................................... 7
E. Venting ........................................................................................................................................................................... 7
. Utilities .......................................................................................................................................................................... 11
G. inishing ...................................................................................................................................................................... 14
H. Appliance Preparation ................................................................................................................................................ 14
I. Determining the Ignition Type ..................................................................................................................................... 15
J. Lighting Instructions .................................................................................................................................................... 16
K. Seasonal Checklist ...................................................................................................................................................... 18
L. Start-up Issues ............................................................................................................................................................ 19
M. Maintenance Instructions ............................................................................................................................................ 20
N. Optional Components ................................................................................................................................................. 22
O. Replacement Parts ...................................................................................................................................................... 25
Index ............................................................................................................................................................................ 27
Warranty ...................................................................................................................................................................... 28

12-02 3 34615 Rev G
NOVUS B-VENT INSTALLATION INSTRUCTIONS
DESIGN AND INSTALLATION CONSIDERATIONS FOR B-VENTS
When selecting a location for your B-Vent appliance, it is important to evaluate a number of considerations. Modern
construction techniques can create conditions that may not allow your vent to draft properly. This may result in spillage
from your B-Vent appliance, as well as cause other combustion appliances to operate incorrectly.
Tightly sealed construction is important for energy efficiency. Unfortunately, a great deal of effort has been directed to
tightening up sidewall construction, while considerably less attention has been paid to tightening upper portions of the
warm air envelope (insulated ceilings). This has increased the Stack Effect, a condition that increases the negative
pressure generated by the structure. This negative pressure will directly affect the drafting performance of a B-Vent
appliance vent. To minimize the negative pressure generated by stack effect, make certain that all ductwork installed in
the attic spaces is sealed airtight. Minimize the number of recessed light fixtures installed in the insulated ceiling and use
sealed recessed light fixtures. inally, make certain the whole house fans and attic access panels are tightly sealed.
These are important design considerations that must be observed during the design and construction stage of the home.
If you desire to put an appliance in your basement, we recommend that you consider a direct vent gas appliance. Basements
always have a significant negative air pressure that causes the B-Vent system to be more susceptible to spillage and cold
flue backdrafting. Since direct vent gas appliances are sealed, they are not affected by the negative pressure that exists
in basements.
inally, a B-Vent appliance performs best when the vent (roof termination) is located on the upper half of the roof, especially
when cathedral ceilings are present. Vents that are located on the lower half of the roof realize what is known as lazy flue
and will not draft as well as a vent that is located in the upper portion of the roof. The reason for this is that the stack effect
generated by the overall height of the living spaces inside the house will exceed the draft generated by the vent system.
If you desire to place an appliance in a location where the termination cap would be located on the lower half of a roof;
such as on an outside wall at the base of a cathedral ceiling, we recommend that you consider using a direct vent gas
appliance. This will ensure an appliance that operates correctly.
These properties do not affect just your B-Vent appliance. They can cause any woodburning fireplace as well as any
conventionally vented (B-Vent) gas appliance to operate improperly. Careful planning at this stage of your project will
ensure satisfaction with the operation of your appliance once it is completed.

34615 Rev G 4 12-02
NOVUS B-VENT INSTALLATION INSTRUCTIONS
1. U.S. AND CANADA CERTIFICATION
The Novus B-Vent Gas Appliance has been tested in
accordance with the ANSI standard Z21.88-2000. In
Canada, the current CSA 2.33-2000, IR41, P4, and IR55
and have been LISTED by Underwriters Laboratories
Inc. for installation as described in this manual. All
components are UL, AGA, CGA or CSA safety certified.
2. LOCAL CODES
This installation must conform with local codes. In the
absence of local codes comply with the National uel
Gas Code ANSI Z223.1-latest edition in the U.S.A., and
the CAN/CGA B149, Installation Codes in Canada.
or assistance during installation contact your local
dealer or contact Heatilator Technical Services
Department, Hearth & Home Technologies, 1915 W.
Saunders Street, Mt. Pleasant, Iowa 52641, 1-800-843-
2848.
HEATILATOR® and NOVUS® are registered trademarks
of Hearth & Home Technologies
3. GLASS SPECIFICATIONS/CERTIFICATIONS
Heatilator gas appliances manufactured with tempered
glass may be installed in hazardous locations such as
bathtub enclosures as defined by the CPSC. The
tempered glass has been tested and certified to the
requirements of ANSI Z97.1-1984 and CPSC 16 C R
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 SPCS 16 C R
Section 1201.5 Certification and labeling requirements
which refers to 15 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.
Note: Minimum and maximum clearances must be main-
tained at all times. Illustrations throughout these instruc-
tions reflect typical installations and are for design purposes
only. Actual installation may vary slightly due to individual
design preferences.
The illustrations and diagrams used throughout these in-
stallation instructions are not drawn to scale.
Tools and building supplies normally required for
installation:
Tools: Building Supplies:
Saw Wall-finishing materials
Pliers raming material
Hammer Surround
Phillips screwdriver Caulking material
Tape measure
Plumb line
Level
Electric drill/bits
Square
Gloves
A. APPLICANCE SPECIFICATIONS
TYPICAL VERTICAL INSTALLATION
We strongly recommend that you D N T install B-
Vent Gas Appliances in strong negative air locations,
such as a basement or a public facility. Living rooms
with cathedral ceilings could be susceptible to a
negative air situation, but such installations can be
overcome through raising the termination, depend-
ing on specific installations. This appliance uses
room air for normal operation and could have prob-
lems establishing a positive draft in a negative air
location. In lieu, we recommend a Direct Vent Gas
Appliance.

12-02 5 34615 Rev G
NOVUS B-VENT INSTALLATION INSTRUCTIONS
B. LOCATION AND CLEARANCES
Appliance Dimensions
WARNING!
Due to high temperatures, the appliance should be located
out of traffic and away from furniture and draperies.
NOVUS NOMENCLATURE
CAUTION:
Do not expose appliance to the elements (such as rain, etc.).
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34615 Rev G 6 12-02
NOVUS B-VENT INSTALLATION INSTRUCTIONS
1. APPLIANCE LOCATIONS AND SPACE
REQUIREMENTS
igure 1 illustrates a variety of ways the appliance may
be located in a room. The NOVUS Series may be
installed directly on the floor or raised on a hearth. These
appliances are certified for installation in a bedroom, bed/
sitting rooms or bathrooms in the U.S. and Canada,
provided that the bedroom or bathroom has a volume
of at least 1350 cubic feet.
Common venting of this gas appliance with other gas
appliances is not allowed in multifamily dwellings.
2. CLEARANCES
igure 2 shows all clearances that must be maintained
around the appliance.
Figure 1 - Appliance Locations
igure 3 shows a typical framing of this appliance using combustible materials. All required clearances to combustibles must
be adhered to. Mantel height is measured from the base of the appliance.
CAUTION:
Wear gloves and safety glasses for protection.
C. FRAMING
Figure 2
Appliance Clearances to Combustible Materials
Figure 3 - Framing
WARNING!
To prevent contact with sagging or loose insulation,
the appliance must not be installed against vapor
barriers or exposed insulation.
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12-02 7 34615 Rev G
NOVUS B-VENT INSTALLATION INSTRUCTIONS
CAUTION:
Provide adequate clearances around the air openings into the combustion chamber and adequate accessibil-
ity clearances for servicing and proper operation.
D. SETTING THE APPLIANCE
This appliance may be placed on a smooth combustible or noncombustible, continuous flat surface. When the appliance
is installed directly on carpeting, tile or other combustible material other than wood flooring, the appliance shall be installed
on a metal or wood panel extending the full width and depth of the appliance. Slide the appliance into position and level
the appliance from side-to-side and front-to-back. Shim with noncombustible materials as necessary.
Secure the appliance by bending out the nailing flanges on each side of the appliance and nail to framing. The nailing
flanges have been positioned 5/8 inch back from the front of the appliance to allow the addition of drywall.
E. VENTING
1. VENT HEIGHT
This appliance requires a 5 B-vent for operation.
Never downsize pipe. It must be terminated above
the roof line. ollow all B-vent requirements and
installation instructions, including minimum
clearances.
The minimum height of vent installation must be nine
feet from the top or twelve feet from the base of the
appliance. Horizontal run must never exceed 50% of
the height of the vent system as shown in igure 4.
2. ATTACHING VENTING
a. Assembling Vent Sections. Attach straight vent
section to the top of appliance. Use only B-vent
sections.
b. Attaching the Vent to the Collar Shield. Three
tabs extend from the collar shield to the B-vent
section. Screw the tabs to the B-vent section using
the self-tapping ¼ screws supplied with the
appliance.
c. Using Elbows. Elbows exceeding 45° from the
vertical shall be considered horizontal and therefore
adapt horizontal run limitations. See igure 5.
Figure 4
Venting ff the Top of Appliance
Note: Vertical rise off the top of the appliance before el-
bowing creates a less restrictive venting environment.
Figure 5 - Using Elbows
WARNING!
To prevent contact with sagging or loose insulation, the appliance must not be installed against vapor
barriers or exposed insulation. Localized overheating could occur and a fire could result.

34615 Rev G 8 12-02
NOVUS B-VENT INSTALLATION INSTRUCTIONS
3. FIRESTOP SPACER/VENT INSTALLATION
rame an opening and install a firestop spacer
whenever the vent penetrates a ceiling floor area, as
shown in igure 6. rame the opening with the same
sized lumber as used in the ceiling/floor joist. Unless
the flue is offset, the hole should be directly above the
appliance. DO NOT pack insulation around the vent.
Assemble vent sections with three screws per joint.
WARNING - RISK OF FIRE!
Always maintain minimum clearances or greater
around the vent system. Do not pack air spaces with
insulation or other material. The flow of combustion
and ventilation air must not be obstructed.
WARNING!
The horizontal run of vent must have a 1/4 rise for
every 1 ft. of run towards the termination. Never al-
low the vent to run downward. This could cause high
temperatures and may present a fire hazard.
WARNING!
When vent sections exceeding three feet in length
are installed between an offset/return, structural sup-
port must be provided to reduce off-center loading
and prevent vent sections from separating at the vent
joints. Follow all B-vent manufacturer guidelines.
4. CHASE/TERMINATION INSTALLATION
igure 7 and Table 1 specify minimum vent heights for
various pitched roofs. Vent sections may have to be cut
to a certain length.
These vent heights are necessary for safety and do not
ensure draft-free operation. Trees, buildings, adjoining
roof lines, adverse conditions, etc., may create a need
for a taller vent should down drafting occur.
Figure 6
Installing the Firestop Spacer

12-02 9 34615 Rev G
NOVUS B-VENT INSTALLATION INSTRUCTIONS
Roof Pitch H (Min.) Ft.
lat to 6/12 ................................................ 1.0
6/12 to 7/12 ............................................... 1.25
Over 7/12 to 8/12 ...................................... 1.5
Over 8/12 to 9/12 ...................................... 2.0
Over 9/12 to 10/12 .................................... 2.5
Over 10/12 to 11/12 .................................. 3.25
Over 11/12 to 12/12 .................................. 4.0
Over 12/12 to 14/12 .................................. 5.0
Over 14/12 to 16/12 .................................. 6.0
Over 16/12 to 18/12 .................................. 7.0
Over 18/12 to 20/12 .................................. 7.5
Over 20/12 to 21/12 .................................. 8.0
Figure 7
Vent Height for Vertical Termination
5. CHECK VENTING SYSTEM
Check the venting system to assure proper operation.
This can be done with a match while the appliance is
operating.
Hold a lighted match at the bottom edge of the draft hood
opening. If the flames and smoke remain upright,
ventilation is acceptable. If the flames and smoke are
drawn into the draft hood, this means ventilation is good.
If the flames and smoke are forced away from the draft
hood, this may indicate a ventilation blockage or down
draft resulting in gas spillage into the home. If this occurs,
turn off the appliance and do not burn it until it has been
inspected by a qualified service person. See igure8.
Vent Height
6. INSTALLING AN OUTSIDE AIR KIT (STRONGLY
RECOMMENDED)
An outside air kit should be purchased as a feature
with this appliance. An outside air kit helps to decrease
the amount of room air taken by utilizing outside air for
combustion. igure 9 illustrates two of many possible
methods that can be used to supply outside air to the
appliance.
A maximum of 40 of air kit ducting is allowed. The air
kit must terminate at least one foot below the venting
termination and must terminate to the outside.
Figure 8
Testing Ventilation
WARNING!
Exhaust products of gasoline engines are hazard-
ous. The outside air must not be taken from a ga-
rage space, attic spaces, basements or above the
roofing where other heating appliances, fans or
chimneys exhaust or utilize air.
TABLE 1
Note: The outside air kit can terminate at any level with
the exception that it must terminate at least one foot be-
low the vent termination cap. The outside air kit inlet
thimble should be positioned at least four feet above the
ground level in a manner that will not allow snow, leaves,
etc. to block the inlet.

34615 Rev G 10 12-02
NOVUS B-VENT INSTALLATION INSTRUCTIONS
a. The air kit can be installed only on the left side of
the appliance. See igures 10 and 11 for correct
orientation of the door assembly and handle. The
hinge will be toward the back of the appliance.
b. Remove the cover plate or knockout from the side
of the appliance and discard.
c. Partly open the air kit door. The hinge on the door
assembly should be located toward the back of the
appliance. If the hinge is not positioned in this
manner, the door will not function correctly.
d. Attach the door assembly to the appliance using
the screws provided.
e. Bend down the left tab on the lower left glass
retainer. Insert the narrow end of the handle through
the tab and into the upper slot on the air kit door.
f. Check operation by pulling the handle out to open,
and pushing it in to close.
g. Mark and cut a hole in the building side for air entry.
This hole should allow some framing (two sides) so
the inlet tube assembly may be fastened properly.
h. Assemble the flexible duct (not supplied) between
the door assembly and the inlet tube assembly.
Secure it in position with the supplied wire ties.
Figure 10 - Air Kit Installation
Figure 11 - Door Assembly & Handle
Figure 9 - utside Air Locations