6
Gas Inlet
Electrical
Supply
Connection
Coil Plenum
Type “B” Vent
Combustible
Platform
Louver Door
Note: Edge or Line
Contact is Permissible
Figure 2. Horizontal Installation
Suspended in Attic or Crawl Space
Figure 3. Horizontal Installation
on a Platform
Upflow and Horizontal Furnaces
UPFLOW APPLICATION
RIGHT
SIDE
BOTTOM
TOP
LEFT
SIDE
TOP
BOTTOM
SIDE
SIDE
HORIZONTAL APPLICATION
†
Allow 24" minimum clearance for servicing.
The recommended clearance is 36".
Table 3. Minimum Clearances to Combustible Material
INSTALLATION CLEARANCES
Vent Connector
Type
Standard Single
Wall Metal Vent
Type B-1 Double
Wall Metal Vent
LEFT SIDE
0"
0"
RIGHT SIDE
0"
0"
VENT
6"
1"
BACK
0"
0"
BOTTOM
0"
0"
TOP
1"
1"
FRONT
4"
†
4"
†