Heatilator IB75 Installation & Operating Instructions Manual
INSTALLATION & OPERATING
INSTRUCTIONS
IB75 B-VENT GAS APPLIANCE
WARNING: If the information in this manual
is not followed exactly, a fire or explosion may
result causing property damage, personal injury 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
neighbors phone. Follow the gas suppliers
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.
CAUTION:
Do not expose the appliance to
the elements (such as rain,
etc.).
Installation and service must be performed by a qualified installer, service agency or the gas supplier. 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.
03/04 35048 Rev L 1
Note: An arrow (Æ) found
in the text signifies change
in content.
This manual must be used for installation of the IB75
Gas Appliance and retained by the homeowner for
operation and maintenance instructions.
WARNING!
IB75 B-VENT GAS APPLIANCE
Please retain this manual for future use.
Table of Contents
Design and Installation Considerations ........................................................................................................................ 3
A. Appliance Specifications ............................................................................................................................................... 4
B. Location and Clearances .............................................................................................................................................. 5
C. Framing ......................................................................................................................................................................... 6
D. Setting the Appliance .................................................................................................................................................... 6
E. Venting .......................................................................................................................................................................... 7
F. Utilities ........................................................................................................................................................................... 9
G. Finishing ...................................................................................................................................................................... 12
H. Appliance Preparation ................................................................................................................................................. 12
I. Lighting Instructions .................................................................................................................................................... 14
J. Seasonal Checklist ...................................................................................................................................................... 15
K. Start-up Issues ............................................................................................................................................................ 16
L. Maintenance Instructions ............................................................................................................................................ 17
M. Log Removal/Replacement ......................................................................................................................................... 19
N. Replacement Parts ...................................................................................................................................................... 20
O. Optional Components ................................................................................................................................................. 22
Index ............................................................................................................................................................................ 23
Limited Lifetime Warranty ........................................................................................................................................... 24
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.
Safety Precautions
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 B-vent system 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. Use only the fuel gas specified on the rating label of this gas appliance.
8. The appliance area shall be kept clear and free from combustible materials, gasoline and other flammable vapors
and liquids.
9. 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.
10. 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.
11. Be sure to provide adequate clearances around the air openings into the combustion chamber and adequate
accessibility clearances for servicing and proper operation.
12. Provisions shall be made to provide adequate combustion and ventilation air. The flow of combustion and ventilation
air should not be obstructed.
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IB75 B-VENT GAS APPLIANCE
Design and Installation Considerations
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 duct work 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. Finally, 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 back drafting. Since direct vent gas appliances are sealed, they are not affected by the negative pressure that exists
in basements.
Finally, 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.
03/04 35048 Rev L 3
IB75 B-VENT GAS APPLIANCE
A. APPLIANCE SPECIFICATIONS
1. U.S. and Canada Certification
The IB75 Gas Appliance has been tested in accordance
with the standards ANSI Z21.50-2000 and CSA 2.22-
2000, and has been listed by Underwriters Laboratories
Inc. for installation and operation 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 Fuel
Gas Code ANSI Z223.1-latest edition in the U.S.A.,
and the CAN/CGA B149 Installation Codes in
Canada.
If you need assistance during installation, please
contact your local dealer or Heatilator Technical
Services Department, Hearth & Home Technologies,
1915 W. Saunders Street, Mt. Pleasant, Iowa 52641,
1-800-927-6841.
HEATILATOR® is a registered trademark of Hearth &
Home Technologies Inc., Division HON INDUSTRIES.
IB75 Nomenclature
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Typical Installation Components
Note: Minimum and maximum clearances must be main-
tained at all times. Illustrations throughout these instructions 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
installation instructions are not drawn to scale.
Tools and building supplies normally required for
installation:
Saw Wall-finishing materials
Pliers Framing material
Hammer Surround
Phillips screwdriver Caulking material
Tape measure Safety gloves
Plumb line Electric drill/bits
Level Framing Square
Non-corrosive leak check solution
Æ
We strongly recommend that you DO NOT install BVent 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,
depending on specific installations. This appliance
uses room air for normal operation and could have
problems establishing a positive draft in a negative
air locations. In lieu, we recommend a direct vent
appliance.
4 35048 Rev L 03/04
WARNING!
This appliance is tested and listed for use only with
the optional accessories listed in these instructions.
Use of optional accessories not specifically tested
for this appliance could void the warranty and/or
result in a safety hazard.
Note: Glass doors are not optional in the
Commonwealth of Massachusetts. They are required.
IB75 B-VENT GAS APPLIANCE
B. LOCATION AND CLEARANCES
Dimensions
1. Appliance Locations and Space Requirements
Figure 1 illustrates a variety of ways the appliance may
be located in a room. The IB75 may be installed directly
on the floor or raised on a hearth. These appliances
are certified for installation in a bedroom or bed/sitting
room in the U.S. and Canada, provided that the
bedroom or bathroom has a volume of at least 2500
cubic feet.
2. Clearances
Figure 2 shows all clearances that must be maintained
around the appliance.
CAUTION:
Do not expose the appliance to the elements (such
as rain, etc.).
WARNING!
Due to high temperatures, the appliance should be
located out of traffic and away from furniture and
draperies.
Figure 1 - Appliance Locations
03/04 35048 Rev L 5
Figure 2
Appliance Clearances to Combustible Materials
IB75 B-VENT GAS APPLIANCE
C. FRAMING
Figure 3 shows typical framing of this appliance using combustible materials and the minimum mantel heights. All required
clearances to combustibles must be adhered to. Figure 4 shows rough framing dimensions.
CAUTION:
Provide adequate clearances around the air
openings into the combustion chamber and
adequate accessibility clearances for servicing and
proper operation.
Æ
CAUTION:
Wear gloves and safety glasses for protection.
Figure 3 - Framing
Figure 4 - Rough Framing Dimensions
WARNING!
To prevent contact with sagging or loose insulation, the appliance must not be installed against vapor barriers
or exposed insulation.
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 a 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 material 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 1/2 in. back from the front of the appliance to allow the addition of drywall.
WARNING!
This appliance may only use an approved B-Vent chimney system. It must not be connected to a chimney flue
servicing a separate solid fuel or gas fuel burning appliance.
6 35048 Rev L 03/04
IB75 B-VENT GAS APPLIANCE
Note: This appliance requires an 8 in. B-vent for operation. Never down-size
1. Clearances
Vent clearances are per vent manufacturers
specifications.
2. Vent Lengths
Various venting configurations are shown in Figures 5
and 6 from which maximum vent runs can be
determined.
E. VENTING
WARNING - RISK OF FIRE!
Always maintain minimum clearances or greater
around the vent system. Do not pack air spaces with
insulation or other material.
3. Firestop Spacer/Vent Installation
Frame an opening and install a firestop spacer
whenever the vent penetrates a ceiling/floor area, as
shown in Figure 7. Frame the opening with the same
sized lumber as used in the ceiling/floor joists. Unless
the flue is offset, the hole should be directly above the
appliance. DO NOT pack insulation around the vent.
Assemble vent sections as per manufacturers
specifications.
Figure 5 - Vertical Termination Vent Lengths
Figure 7 - Installing the Firestop Spacer
Figure 6 - Venting off the Top of the Appliance
03/04 35048 Rev L 7
IB75 B-VENT GAS APPLIANCE
4. Chase/Termination Installation
Figure 8 and Table 1 specify minimum vent heights for
various pitched roofs.
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.
that the damper blade moves freely and does not
scrape or bind on any of the damper components.
While the appliance is in operation, visually check that
the damper opens. It will take approximately four
minutes for the spring to reach normal operating
temperature and the damper to reach a fully open
position.
6. Check the Vent System
Test the venting system periodically to assure proper
operation. This can be done with a match while the
appliance is operating.
Hold a lighted match at the top edge of the appliance
opening. If the flames and smoke remain upright,
ventilation is acceptable. If the flames and smoke are
drawn into the appliance, this means ventilation is
good. If the flames and smoke are forced away from
the appliance, this may indicate a ventilation blockage
or down draft resulting in gas spillage into your home.
If this occurs, turn off the appliance and do not burn it
until it has been inspected by a qualified service
person.
If you have installed optional doors, close the doors
and conduct the test following the same instructions
above. See Figure 9.
Figure 8
Vent Height for Vertical Termination
Note: To ensure proper operation, verify all venting
and the termination are unobstructed.
Roof Pitch H (Min.) Ft.
Flat 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
Table 1 - Vent Height
5. Automatic Damper
This appliance comes with a thermally activated
automatic damper device. When at room temperature,
the damper will have slight spring pressure keeping it
in a closed position. When placed in a heat source
(i.e. when the appliance is turned on), the damper will
open as the thermally activated spring heats. Check
Figure 9 - Testing Ventilation
8 35048 Rev L 03/04
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