StyleCrest Installation Manual

5
“N”- 56"
23 3/4"
“C”- 76"
“A” Model
w/o Coil
Cabinet
“B/C” Model
w/Coil
Cabinet
19 3/4”
Figure 4. Overall Dimensions
Table 1. Minimum Clearances
ALL MODELS CLOSET ALCOVE
Front 6” 18”
Back 0” 0”
Sides 0” 0”
Roof Jack 0” 0”
To p 6” 6”
Top and Sides of Duct 0” 0”
Bottom of Duct — —
A Cabinet (w/ coil box) 0” 0”
A Cabinet (w/o coil box) 1/4” 1/4”
B Cabinet 0” 0”
• Closet installations must use a louvered door having
a minimum free area of 235 in
2
when located 6” from
furnace or 390 in
2
for 5 ton MG1 furnaces. For special
clearance between 1” - 6”, requirements are a louvered
door with a minimum of 250 in
2
free area, with the
openings in the closet door in line with the louvered
openings in the furnace door. A fully louvered closet
door may be used. See Circulating Air Requirements
section (page 5).
• The furnace must be kept free and clear of insulating
material. Examine the furnace area when the furnace is
installed or when insulation is added. Insulating material
may be combustible.
Applications
MG1 series gas furnaces are classified as a Category
I (Catégorie I) appliance and listed as a direct vent
(sealed combustion), downflow heating appliance for
manufactured (mobile) homes and recreational vehicles.
The furnace must be located so that venting can be
properly achieved.
Air conditioning may be added to structures with MG1
series furnaces using air conditioning or conventional
units. This Installation Instruction manual includes
special requirements for incorporation of air conditioning
equipment to the MG1 furnaces.
Unit Location
• The furnace shall be appropriately located to the supply
and return air distribution system (page 5). Sides and
back of the furnace may be enclosed by wall framing.
See Minimum Clearances section on page 4.
• The furnace installation is only intended for free air return
through the furnace door louvers. DO NOT connect a
ducted return air system directly to the furnace. Improper
installation may create a hazard and damage equipment,
as well as void all warranties.
• Furnace may be installed on combustible flooring when
using manufacturer approved duct connectors. See
page 5.
• When installed in a residential garage, the furnace must
be positioned so the burners and the source of the
ignition are located no less than 18 inches above the
floor and protected from physical damage by vehicles.
CIRCULATING AIR REQUIREMENTS
WARNING:
Do not allow combustion products to enter the
circulating air supply. Failure to prevent the
circulation of combustion products into the
living space can create potentially hazardous
conditions including carbon monoxide poisoning
that could result in personal injury or death.
The surface that the furnace is mounted on must
provide sound physical support of the furnace
with no gaps, cracks or sagging between the
furnace and the floor or platform.
Circulating air ductwork must not be connected
to any other heat producing device such as a
fireplace insert, stove, etc. This may result in fire,
explosion, carbon monoxide poisoning, personal
injury, or property damage.
Return Air
U.S.A. home manufacturers shall comply with all of the
following conditions to have acceptable return air systems
for closet installed forced air heating appliances:
• The return air opening into the closet shall not be less
than specified in the appliance’s listing.
• The cross-sectional area of the return duct system
leading into the closet, when located in the floor or
ceiling shall not be less than 235 in
2
.
CAUTION:
HAZARD OF ASPHYXIATION: Do not cover or
restrict return air opening.