Table of Contents
Advertisement
935SB: Installation, Start-up, Operating and Service Maintenance Instructions
Representative drawing only, some models may vary.
HORIZONTAL LEFT-RIGHT VENT CONFIGURATION
Fig. 55 – Horizontal Left (Appearance may vary)
See "Notes for Venting Options"
Unit Size
Uninsulated
Pipe Dia.
in.
Winter
1 ½
Design
20
20
Temp °F
0
10
-20
5
-40
Unit Size
Pipe Dia.
Winter
in.
1 ½
Design
20
15
Temp
0
15
°F
-20
15
-40
10
Unit Size
Pipe Dia.
in.
2
Winter
20
20
Design
0
20
Temp °F
-20
15
-40
10
NOTE: Maximum Equivalent Vent Length (MEVL) includes standard and concentric vent termination and does NOT include elbows. Use
Deductions from Maximum Equivalent Vent Length to determine allowable vent length for each application.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Table 18 – Maximum Allowable Exposed Vent Length in Unconditioned Space - Ft.
40,000 BTUH
3/8-in.
Insulation
Insulation
2
2 ½ 1 ½
2
2 ½ 1 ½
20
20
20
50
45
20
5
5
20
25
20
20
20
15
10
20
15
10
5
15
Uninsulated
2
2 ½
3
4
40
40
35
30
20
15
10
5
10
5
5
Uninsulated
2 ½
3
4
50
40
35
20
15
10
10
5
5
Representative drawing only, some models may vary.
HORIZONTAL RIGHT-VERTICAL VENT CONFIGURATION
A11329A
Representative drawing only, some models may vary.
HORIZONTAL RIGHT-RIGHT VENT CONFIGURATION
Fig. 56 – Horizontal Right (Appearance may vary)
Notes for venting options
1. Attach vent pipe adapter with gasket to furnace casing.
2. Align notches in rubber coupling over standoffs on adapter. Slide
clamps over the coupling.
3. Slide vent pipe through adapter and coupling into vent elbow.
4. Insert vent pipe into vent elbow.
5. Torque all clamps 15 lb.-in.
6. Attach combustion air pipe adapter with gasket to furnace.
Attach combustion air pipe to adapter with silicone. Pilot drill a 1/8-in.
hole in adapter and secure with a #7 x 1/2-in. sheet metal screw.
A11337
1/2-in.
Uninsulated
2
2 ½
1 ½
2
2 ½
60
50
20
30
30
30
25
15
15
10
20
15
10
5
15
10
5
80,000 BTUH
3/8-in. Insulation
1 ½
2
2 ½
15
50
90
75
15
50
45
35
15
35
30
20
15
25
20
15
100,000 BTUH
3/8-in. Insulation
2
2 ½
3
20
80
95
20
55
45
20
35
30
20
25
20
39
See "Notes for Venting Options"
60,000 BTUH
3/8-in. Insulation
3
1 ½
2
2 ½
3
25
20
75
65
60
10
20
40
30
25
20
25
20
15
20
15
15
10
1/2-in. Insulation
3
4
1 ½
2
65
15
50
30
15
50
15
15
40
5
15
30
1/2-in. Insulation
4
2
2 ½
80
20
80
35
20
65
20
20
45
10
20
30
A11335
1/2-in. Insulation
1 ½
2
2 ½
3
20
85
75
65
20
45
40
30
20
30
25
20
20
20
15
10
2 ½
3
4
70
70
70
50
40
35
30
25
15
25
20
10
3
4
105
90
55
45
35
25
25
15
Table 17
-
Advertisement
Table of Contents
