Vent Assem bly Illustrations. Suburban SFV-42F, NT-24SP, SH-35, P-30S/40, P-40, SF-35, SH-42F, NT.12SE, SFV-42, NT.16SE

VENTING

Venting- By definition of a Direct Vent Sealed Combustion Furnace, it must be vented to the outside atmosphere and also draw combustion air from outdoors. Therefore, it is imperative that the vent be unobstructed and there must be a seal between the exhaust and intake (caulking) . Refer to the vent assembly installation in the manual. The vent must be straight. There can be no offsets or turns in the vent. All vent tubes which connect to the furnace exhaust and intake must overlap a minimum of 1/2" on intake, and 1 1/4" on exhaust. Check your furnace model number for vent installation procedures. Vents cannot be altered as supplied from the factory.

VENT ASSEMBLY INSTALLATION (SF and SH SERIES)

Figure 2

S F

Figure 2A

S H

6

VENT ASSEMBLY INSTALLATION (SF and SH SERIES)

Figure 3

S F

Figure 3A

SH and S H D -2542

7

VENT ASSEMBLY INSTALLATION (SF and SH SERIES)

Figure 4

S F

Figure 4A

S H

8

VENT ASSEMBLY INSTALLATION (SFV)

Figure 5

Figure 5A

9

Figure 6

Figure 6A

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VENT ASSEMBLY INSTALLATION (DD SERIES)

Note: Vent cap must be installed on DD furnace when bench testing.

Figure 7

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VENT ASSEM BLY INSTALLATION (NT SERIES)

Figure 8

N T-12/16/20S E

Figure 9

N T-12/16/20S and S E

Figure 10

NT-12/16S

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VENT ASSEM BLY INSTALLATION (NT SERIES)

Figure 11

N T-20S

Figure 12

N T-24/30/34S P

P -30S

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VENT ASSEM BLY INSTALLATION (NT SERIES)

Figure 13

N T-24/30/34S P

P -30

EXTENSION TUBE

KIT NUM BER

520498

520499

520500

520501

M IN./M AX. LENGTH

(Extension Tube Range)

Figure 14

N T-24/30/34S P

P-30S

2-1/4" to 3-1/8"

3-1/8" to 4-7/8"

4-7/8" to 7"

7" to 9"

EXTENSION TUBE

KIT NUM BER

520593

520594

520595

520596

M IN./M AX. LENGTH

(Extension Tube Range)

2-1/4" to 3-1/8"

3-1/8" to 4-7/8"

4-7/8" to 7"

7" to 9"

Figure 15

N T-40

P -40

14

VENT ASSEM BLY INSTALLATION (NT-40 and P-40)

Figure 16

N T-40

Figure 17

P -40

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