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SL280UHV Gas Furnace
The SL280UHV gas furnace is equipped with a two-stage,
variable speed integrated control. the control is compati-
ble with:
Communicating thermostats - icomfort Wi-Fi®.
Non-comunicating thermostats - ComfortSense or other
conventional thermostats.
Control systems - Harmony III™ Zone Control System
(non-communicating).
Each SL280UHV unit is shipped ready for installation in
the upow or horizontal position (left or right). The furnace
is shipped with the bottom panel in place. The bottom
panel must be removed if the unit is to be installed in a
horizontal application. The panel may also be removed in
upow applications.
Shipping and Packing List
Package 1 of 1 contains
1 - Assembled SL280UHV unit
1 - Bag assembly containing the following:
2 - Screws
1 - Snap bushing
1 - Snap plug
1 - Wire tie
1 -Vent warning label
1 - Owner’s manual and warranty card
The following items may be ordered separately:
1 - Thermostat
1 -Suspension Kit (for horizontal installations)
1 - Propane/LP changeover kit
1 - Return air base
1 - High altitude kit
1 - Side lter kit
Check equipment for shipping damage. If you nd any
damage, immediately contact the last carrier.
Safety Information
WARNING
Danger of explosion.
There are circumstances in which odorant
used with LP/propane gas can lose its scent.
In case of a leak, LP/propane gas will settle
close to the oor and may be difcult to
smell. An LP/propane leak detector should
be installed in all LP applications.
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer or
equivalent, service agency, or the gas supplier.
CAUTION
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment and wear gloves and
protective clothing.
Certications
SL280UHV units are CSA International certied to ANSI
Z21.47.
In the USA, installation of gas furnaces must conform with
local building codes. In the absence of local codes, units
must be installed according to the current National Fuel
Gas Code (ANSI-Z223.1). The National Fuel Gas Code is
available from the following address:
American National Standards Institute, Inc.
11 West 42nd Street
New York, NY 10036
Clearances
Adequate clearance must be made around the air open-
ings into the vestibule area. In order to ensure proper unit
operation, combustion and ventilation air supply must be
provided according to the current National Fuel Gas Code.
Vent installations must be consistent with the venting ta-
bles (in this instruction) and applicable provisions of local
building codes.
This furnace is CSA International certied for installation
clearances to combustible material as listed on the unit
nameplate and in the tables in gures 7 and 11. Accessi-
bility and service clearances must take precedence over
re protection clearances.
NOTE - For installation on combustible oors, the furnace
shall not be installed directly on carpeting, tile, or other
combustible material other than wood ooring.
Installed Locations
For installation in a residential garage, the furnace must
be installed so that the burner(s) and the ignition source
are located no less than 18 inches (457 mm) above the
oor. The furnace must be located or protected to avoid
physical damage by vehicles. When a furnace is installed
in a public garage, hangar, or other building that has a
hazardous atmosphere, the furnace must be installed ac-
cording to recommended good practice requirements and
current National Fuel Gas Code.
Temperature Rise
NOTE - Furnace must be adjusted to obtain a temperature
rise(high and low re) within the range(s) specied on the
unit nameplate. Failure to do so may cause erratic lim-
it operation and may result in premature heat exchanger
failure.
This SL280UHV furnace must be installed so that its elec-
trical components are protected from water.
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