Introduction - Carrier N80MSN Installation, Start-Up, Operating And Service And Maintenance Instructions

N80MSN/N80MSL: Installation, Start–Up, Operating and Service and Maintenance Instructions
4. Combustion products must be discharged outdoors. Connect this
furnace to an approved vent system only, as specified in the
"Venting" section of these instructions.
5. Never test for gas leaks with an open flame. Use a commercially
available soap solution made specifically for the detection of leaks
to check all connections, as specified in the "Gas Piping" section.
6. Always install furnace to operate within the furnace's intended
temperature-rise range with a duct system which has an external
static pressure within the allowable range, as specified in the
"Start-Up, Adjustments, and Safety Check" section. See furnace
rating plate.
7. When a furnace is installed so that supply ducts carry air circulated
by the furnace to areas outside the space containing the furnace, the
return air shall also be handled by duct(s) sealed to the furnace
casing and terminating outside the space containing the furnace.
See "Air Ducts" section.
8. A gas-fired furnace for installation in a residential garage must be
installed as specified in the warning box in the "Location" section.
9. The furnace may be used for construction heat provided that the
furnace installation and operation complies with the first
CAUTION in the LOCATION section of these instructions.
10. These Multipoise Gas-Fired Furnaces are CSA (formerly A.G.A.
and C.G.A). design-certified for use with natural and propane gases
(see furnace rating plate) and for installation in alcoves, attics,
basements, closets, utility rooms, crawlspaces, and garages. The
furnace is factory-shipped for use with natural gas. A CSA listed
accessory gas conversion kit is required to convert furnace for use
with propane gas.
11. See Fig. 2 for required clearances to combustible construction.
12. Maintain a 1-in. (25 mm) clearance from combustible materials to
supply air ductwork for a distance of 36 inches (914 mm)
horizontally from the furnace. See current edition of NFPA 90B or
local code for further requirements.
13. These furnaces SHALL NOT be installed directly on carpeting, tile,
or any other combustible material other than wood flooring. In
downflow installations, factory accessory floor base MUST be used
when installed on combustible materials and wood flooring. Special
base is not required when this furnace is installed on manufacturer's
cased evaporator coils or when manufacturer's evaporator coil
casing is used. See Fig. 2
information.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
for clearance to combustible construction

INTRODUCTION

Fig. 2 – Clearances to Combustibles
Fig. 3 – Multipoise Orientations
This 4-way multipoise Category I fan-assisted furnace is CSA
design-certified. A Category I fan-assisted furnace is an appliance
equipped with an integral mechanical means to either draw or force
products of combustion through the combustion chamber and/or heat
exchanger. The furnace is factory-shipped for use with natural gas.
This furnace is not approved for installation in mobile homes,
recreational vehicles, or outdoors. This furnace is designed for minimum
continuous return-air temperature of 60°F (16°C) db or intermittent
operation down to 55°F (13°C) db such as when used with a night
setback thermostat. Return-air temperature must not exceed 80°F (27°C)
db. Failure to follow these return-air temperature limits may affect
reliability of heat exchangers, motors, and controls (see
For accessory installation details, refer to the applicable instruction
literature.
NOTE: Remove all shipping brackets and materials before operating the
furnace.
4
A220231
A02097
Fig. 4).