Carrier N92ESN Installation, Start-Up, Operating And Service And Maintenance Instructions page 32

N92ESN: Installation, Start-up, Operating and Service and Maintenance Instructions
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow the instructions outlined below for each appliance
being placed into operation could result in carbon monoxide poisoning
or death.
The instructions included with this furnace DO NOT APPLY to vent
systems that are located below the furnace. CAREFULLY FOLLOW
THE INSTRUCTIONS PROVIDED WITH THE EXTERNAL
VENT TRAP KIT FOR LAYING OUT THE VENTING SYSTEM
AND THE DRAIN SYSTEM when all or part of the venting system is
placed below the furnace.
Proper configuration of the venting and drain system is critical when
placing all or part of the venting system below the level of the furnace.
VENT GASSES COULD
DRAINAGE SYSTEM if the instructions provided with the External
Vent Trap Kit are not followed.
Locating the Vent Termination
General
NOTE: Termination Requirements for the Provinces of Alberta and
Saskatchewan are located at the end of this section.
Combustion-air inlet pipe (direct vent/2-pipe system only) and vent pipe
must terminate outside structure, either through sidewall or roof.
Special termination requirements may be required in other Canadian
provinces. Refer to the authority having jurisdiction for clarification
and/or additional clearance requirements.
For vent termination clearance, references to National codes are shown
in Fig. 46 for Direct Vent/2-Pipe system and
Combustion Air/Non-direct
termination arrangements, refer to
and Fig. 40 for Ventilated Combustion Air/Non-Direct/1-Pipe system.
Contact Local code authorities for other requirements to and/or
exemptions from the National codes shown in the figures.
Roof termination is the recommended termination location. Roof
terminations provide better performance against sustained prevailing
winds. The roof location is preferred since the vent and combustion air
system is less susceptible to damage or contamination. The termination
is usually located away from adjacent structures or other obstacles such
as inside corners, windows, doors or other appliances. It is less prone to
icing conditions, and it often has less visible vent vapors.
Sidewall terminations may require sealing or shielding of building
surfaces with a corrosive resistance material due to the corrosive
properties of combustion products from the vent system, as well as
protection of adjacent structures.
!
RECOMMENDED SUPPORT FOR VENT
TERMINATIONS
It is recommended that sidewall vent terminations in excess of 24
inches (0.6 M) or rooftop terminations in excess of 36 inches (1 M) in
vertical length be supported by EITHER the Direct Vent Termination
Kit shown in Table or by field-supplied brackets or supports fastened
to the structure.
When determining appropriate location for termination, consider the
following guidelines:
1. Comply with all clearance requirements stated in
per application.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
BE RELEASED FROM THE
Fig. 47 for Ventilated
Vent/1-Pipe system. For
Fig. 39 for Direct Vent/2-Pipe system
NOTICE
Fig. 46
2. The vent termination must be located at least 3 feet from an inside
corner and follow the clearance distances in the Inside Corner
Termination drawing. See
3. Termination or termination kit should be positioned where vent
vapors will not damage plants/shrubs, air conditioning equipment
or utility meters.
4. Do not locate termination directly into prevailing winds.
Termination should be positioned so that it will not be affected by
sustained prevailing winds over 30 mph, wind eddy, such as inside
building corners, or by recirculation of flue gases, airborne leaves,
or light snow.
5. Termination or termination kit should be positioned where it will
not be damaged by or subjected to foreign objects such as stones,
balls, etc.
6. Termination or termination kit should be positioned where vent
vapors are not objectionable.
Direct Vent / 2-Pipe System
Direct vent (2-pipe) vent and combustion air pipes must terminate
outside the structure. See
required by National code authorities. Allowable vent and combustion
air terminations are shown in
CARBON MONOXIDE POISONING HAZARD
Failure to follow the instructions outlined below for each appliance
being placed into operation could result in carbon monoxide poisoning
or death.
For all venting configurations for this appliance and other gas
appliances placed into operation for the structure, provisions for
exterior adequate combustion, ventilation, and dilution air must be provided in
accordance with:
U.S.A. Installations: Section 9.3 of current edition of NFPA 54/ANSI
Z223.1 Air for Combustion and Ventilation and applicable provisions
of the local building codes.
Canadian Installations:
CAN/CSA-B149.1. Venting Systems and Air Supply for Appliances
and all authorities having jurisdiction.
EXAMPLE FOR
UPFLOW INSTALLATIONS.
MAY BE APPLIED TO
OTHER CONFIGURATIONS.
Fig. 41 – Sample Inlet Air Pipe Connection for Polypropylene
or Fig. 47
32
Fig. 42.
Fig. 46 For references to vent clearances
Fig. 39.
WARNING
!
Part 8 of current
Venting Systems
edition of
A12220