All installations and services must be performed by qualified service personnel.
4
- MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS -
MODEL NO.
FROM SIDES
OF FURNACE
FRONT
TOP & SIDES
OF PLENUM
FROM THE
FLUE OR
VENT
REAR
BOTTOM
PGT5-100
PGT11-125
PGT16-160
PGL20-180
PGL33-250
PGL37-312
PGL39-400
1 IN.
1 IN.
1 IN.
1 IN.
1 IN.
1 IN.
1 IN.
24 IN.
24 IN.
24 IN.
24 IN.
24 IN.
24 IN.
24 IN.
1 IN.
1 IN.
1 IN.
1 IN.
1 IN.
1 IN.
1 IN.
4 IN.
9 IN.
9 IN.
18 IN.
18 IN.
18 IN.
18 IN.
1 IN.
1 IN.
1 IN.
1 IN.
1 IN.
1 IN.
1 IN.
1 IN.
1 IN.
1 IN.
N/A
N/A
N/A
N/A
The minimum clearances are listed for fire protection. Clearance for servicing the front of the furnaces and to all points on
the furnace requiring access must be 24".
Equipment must be installed in accordance with regulations of the National Board of Fire Underwriters. Authorities
having jurisdiction should be consulted before installations are made.
C. FURNACE LOCATION AND COMBUSTION AIR
A furnace installed in a residential garage must be installed so the burners and ignition source are located higher than 18
inches above the floor. Also, the furnace must be located or protected to avoid physical damage by vehicles. The furnace
must be located on a dry surface. If the surface becomes wet or damp at times, the furnace should be supported above the
floor using a concrete base, bricks, patio blocks, etc.
The electrical components of this furnace should be protected against water or moisture.
The area in which the furnace is located must have an adequate supply of air for combustion and draft. Open non-partitioned
basements, below grade utility room windows without storms or rooms with loose access doors will generally permit
adequate air infiltration. However, if the furnace is located in an area of the building with tight doors and windows, outside
ventilation or an opening into another room is recommended. This can be accomplished with two rectangular openings
located in a wall or door, one 6" from the ceiling or at the top of the door and one 6" from the floor or at the bottom of the
door each having a free area of not less than 1 square inch per 1,000 BTUH input but not less than 100 square inches total.
These openings must be free and unobstructed. Maintain a minimum 24" clearance to ventilation openings, which provide
combustion air to the furnace.
Summary of Contents for PGL20-180
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