Vent Termination - A.O. Smith 400 - 2100 Installation & Operation Manual

2
Venting
(continued)
Do not combine the flue from this unit with the vent from any other appliance. Do not combine flues from
WARNING
multiple appliances into a common vent. The flue from this unit must be a dedicated stack.
Connect the flue vent directly to the flue outlet opening on the top of the unit. Make the connections from the unit vent to the
outside stack as direct as possible with no reduction in diameter. Provide adequate clearance to combustibles for the vent connector
and firestop. Follow the vent manufacturer's instructions when installing sealed AL29-4C vents and accessories, such as firestop
spacers, vent connectors, thimbles, caps, etc.
Provide adequate clearance to combustibles for the vent connector and firestop.
When planning the venting system, avoid possible contact with plumbing or electrical wiring inside walls, ceilings, and floors.
Locate the unit as close as possible to chimney or gas vent. When a vent system is disconnected for any reason, the flue must be
reassembled and resealed according to the vent manufacturer's instructions.
The installed length of flue from the unit to the outside point of termination must not exceed 50 equivalent feet (15.2m). Subtract
5 feet (1.5m) of equivalent length for each 90° elbow. Subtract 2.5 feet (0.7m) of equivalent length for each 45° elbow.
Sidewall vent termination clearances and location
Follow all sidewall venting termination information for clearances and location under Sidewall Vent Termination Clearances and
Location on page 23.
MODEL
(W/POWER FAN ASSY.)
400
500
650
750
1000
1250
1450
1800
2100
*These kits include a barometric damper.
TABLE - 2C
SIDEWALL VENT KITS
KIT MAX. VENT
LENGTH
9910110000
9910110000
9910110001
9910110001
9910110002*
9910110003*
9910110003*
9910110004*
9910110004*
Installation & Operation Manual

VENT TERMINATION

ONLY
(MODELS 400 - 750)
100 ft. 9910115000
100 ft. 9910115000
100 ft. 9910115001
100 ft. 9910115001
100 ft.
100 ft.
100 ft.
100 ft.
100 ft.
MAX. VENT
LENGTH
50 ft.
50 ft.
50 ft.
50 ft.
N/A N/A
N/A N/A
N/A N/A
N/A N/A
N/A N/A
25