Series TA/TX/TXR
Page 27
Jan 07, 2015
Venting / Combustion Air Ducting
Figure 25: 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 26 for detailed Common Horizontal Venting Guidelines.
Figure 26: 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.
