Williamson Series 2 Manual page 12

GWI Series 2 Gas-Fired Water Boilers – Boiler Manual
3 Vent installation
Direct exhaust venting
Figure 8
Sidewall vent termination options and
installation requirements
12
continued
continued
Using any termination other than one of those shown
could cause nuisance outages and loss of heat,
resulting in substantial property damage.
Part Number 550-142-785/0812