Series UAG
Page 25
Nov 11, 2015
Venting / Combustion Air Ducting
Figure 21: Common Vertical Venting
Common Horizontal Venting
•
All heaters connected to a common horizontal vent must operate at the same time. Connect the
electrical circuit to the same thermostat to ensure simultaneous operation.
•
Fresh air supply
CANNOT
supply other burner systems.
•
Refer to Figure 22 for detailed Common Horizontal Venting guidelines.
Figure 22: Common Horizontal Venting
FOR VERTICAL VENTING REFER TO
ANSI Z223.1 AND CAN/CGA B149.1
AND B149.2 FOR FAN ASSISTED
APPLIANCES.
ROOF
FOR VERTICAL VENTING REFER TO
ANSI Z223.1 AND CAN/CGA B149.1
AND B149.2 FOR FAN ASSISTED
APPLIANCES.
INCREASE TO DETERMINED
VENT SIZE
FOR VERTICAL VENTING REFER TO
ANSI Z223.1 AND CAN/CGA B149.1
AND B149.2 FOR FAN ASSISTED
APPLIANCES.
ROOF
SINGLE HEATER
MULTIPLE HEATERS
TYPE B-VENT
TYPE B-VENT
6" VENT
TERMINAL
P/N CT044
NOTES: (FOR HORIZONTAL VENTING)
1- USE 4" SINGLE WALL VENT WITH HEATERS OF COMBINED INPUT OF UP TO 250,000 BTUH
AND 6" FOR A COMBINED TOTAL INPUT OF 250,000 BTUH OR GREATER.
2 - WALL THIMBLES AND VENT TERMINALS
MUST TO BE USED WITH SINGLE WALL HORIZONTAL VENTING THROUGH COMBUSTIBLE WALLS.
WALL THIMBLE MAY BE REPLACED BY FLASHING WHERE THE VENT IS PENETRATING
A NON-COMBUSTIBLE WALL.
6"
TOTAL VENT LENGTH FOR
SINGLE WALL VENTING
(INCLUDING ELBOWS) = 40'
EACH ELBOW = 5'
MAX. NUMBER OF ELBOW = 3
WALL
5' MAX
18" MIN.
COMMON VENTING FOR HEATERS
WITH A COMBINED TOTAL INPUT OF 250,000 BTUH OR GREATER
4"
TOTAL VENT LENGTH FOR
SINGLE WALL VENTING
(INCLUDING ELBOWS) = 40'
EACH ELBOW = 5'
MAX. NUMBER OF ELBOW = 3
WALL
5' MAX
4" VENT
TERMINAL
P/N CT011
18" MIN.
COMMON VENTING FOR HEATERS
WITH A COMBINED TOTAL INPUT OF UP TO 250,000 BTUH
FOR COMBUSTIBLE
WALLS
4" WALL THIMBLE
P/N CS006
6" WALL THIMBLE
P/N CS033
24 GSG VENT
MATERIAL.
24 GSG VENT
MATERIAL.
