R O B E R T S
-
G O R D O N
S E C T I O N
8 :
V E N T I N G A N D D U C T I N G
pg 25
COMMON SIDE WALL VENTING (See Figure 23)
Requirements
a) Maximum of two units may be vented together into a
6” (15 cm) diameter common vent.
b) Units must be of the same BTU input.
c) Units must be controlled from one common thermostat.
d) Use a sweeping tee, or sweeping Y connection. These
connections may be purchased from any sheet metal
fitting manufacturer.
Figure 23. Common Side Wall Venting Configurations
Outside wall
4" Single
wall pipe
Outside wall
4" Single wall pipe
Vent terminal
Tjernlund VH1-6 or equivalent
Vent adapter
Vent adapter
Sweeping 'Y'
Connection
Sweeping 'T'
Connection
Vent terminal
Tjernlund VH1-6 or equivalent
4"
6"
4"
6"
4"
4"
Recommendations
Although not compulsory, an outside air supply to the
burners is recommended.