5
REQUIREMENTS & CODES
WARNING:
This unit must be installed in accordance
with instructions outlined in this manual
during the installation, service, and operation
of this unit. Unqualifi ed individuals should
not attempt to interpret these instructions or
install this equipment. Failure to follow safety
recommendations could result in possible
damage to the equipment, serious personal
injury or death.
• The installer must comply with all local codes and
regulations which govern the installation of this type
of equipment. Local codes and regulations take
precedence over any recommendations contained in
these instructions. Consult local building codes and the
National Electrical Code (NEC) for special installation
requirements.
• All electrical wiring must be completed in accordance
with local, state and national codes and regulations and
with the National Electric Code (ANSI/NFPA 70) or in
Canada the Canadian Electric Code (CSA Z240.6.1, &
Z240.9.1).
• Design and construction of the home duct system,
must be in accordance with: HUD Manufactured Home
Construction & Safety Standard (Title 24, Part 3280)
and American National Standards (ANSI) A119.11,
C1-NFPA 7
• Follow all precautions in the literature, on tags, and
on labels provided with the equipment. Read and
thoroughly understand the instructions provided with
the equipment prior to performing the installation and
operational checkout of the equipment.
• This air handler may not be used for temporary heating
of buildings or structures under construction.
IMPORTANT SAFETY INFORMATION
INSTALLER: Please read all instructions before servicing
this equipment. Pay attention to all safety warnings and
any other special notes highlighted in the manual. Safety
markings are used frequently throughout this manual to
designate a degree or level of seriousness and should not
be ignored.
WARNING
indicates a potentially hazardous
situation that if not avoided, could result in personal injury
or death.
CAUTION
indicates a potentially hazardous
situation that if not avoided, may result in minor or moderate
injury or property damage.
INSTALLER INFORMATION
Minimum Installation Clearances
• Access for positioning and servicing the unit must be
considered when locating unit. The need to provide
clearance for access to panels or doors may require
clearance distances over and above the requirements.
For alcove installations allow 18 (46cm) inches
minimum clearance from the front of the unit for
future servicing. Closet installations require 36
inches minimum.
• This appliance must be installed in accordance with
clearances listed in Table 1. The furnace must be installed
with ample clearance for easy access to the air fi lter,
blower assembly, burner assembly, controls, and vent
connections.
• Locate and install this unit in position as specifi ed on
page 8. This unit is designed only for Indoor installations
and should be located with consideration of minimizing
the length of the supply and return ducts. See Table 4
(page 15) or the rating plate for circulating airfl ow data.
• Suffi cient clearance for unobstructed airfl ow through a
louvered door must be maintained in order to achieve
rated performance. Air return to the furnace must have
the minimum required total free area:
200
in
2
(1290 cm
2
) for furnace only. May also include
return air grille and frame assembly P/N 902989 or wall
mount grille P/N 902999).
235
in
2
(1516 cm
2
) with 4 ton A.C. or H.P. installed.
250
in
2
. (1613 cm
2
) with 4 ton A.C. or H.P. installed &
1” special clearance.
390
in
2
(2516 cm
2
) with up to 5 ton A.C. or H.P. installed.
Clearances to Combustible Materials
•
This furnace is Design Certifi ed in the U.S. and Canada
by CSA International for the minimum clearances to
combustible materials.
NOTE:
The furnace is listed for
installation on combustible or non-combustible fl ooring.
To obtain specifi c clearance information, refer to the
furnace rating plate, located inside of the furnace cabinet.
• 0” from all surfaces of furnace cabinet, ducts, optional
coil housing and plenum connector. No separate subbase
required for installations on combustible fl ooring.
Table 1. Minimum Clearance Requirements
ALL MODELS
CLOSET
ALCOVE
Front **
6"
18"
Back
0"
0"
Sides*
0"
0"
Top
0"
0"
Top & Sides of Duct
0"
0"
Bottom of Duct
0"
0"
** Service Clearance
* For upfl ow application using upfl ow stand, 1” minimum per side.
