Quick Start Manual

11
FIGURE 7
CLEARANCE TO COMBUSTIBLES, DOWNFLOW UNITS
I393
DOWNFLOW MODELS MINIMUM CLEARANCE (IN.)
LEFT RIGHT SHIP
MODEL A B C D E F
SIDE SIDE
BACK TOP FRONT VENT
WGTS
045 17
1
⁄2 16
11
⁄32 15
5
⁄8 2 16
5
⁄8 13
7
⁄8 0 0 0 1 2* 0 111
060 17
1
⁄2 16
11
⁄32 15
5
⁄8 2 16
5
⁄8 13
7
⁄8 0 0 0 1 2* 0 117
075 21 19
27
⁄32 19
3
⁄16 2 20
1
⁄8 17
3
⁄8 0 0 0 1 2* 0 137
090 21 19
11
⁄32 19
3
⁄16 2 20
1
⁄8 17
3
⁄8 0 0 0 1 2* 0 148
105 24
1
⁄2 23
11
⁄32 22
5
⁄8 2 23
5
⁄8 20
7
⁄8 0 0 0 1 2* 0 160
*A service clearance of at least 24 inches is recommended in front of all furnaces.
NOTE: IN DOWNFLOW CONFIGURATION, OPTIONAL AIR CUTOUT IS NOT PERMITTED.
SUPPLY
AIR
RETURN
AIR
AIRFLOW
2 DIA.
ALT. GAS
CONNECTION
25
13
⁄16
4
3
⁄8
2 DIA.
GAS CONNECTION