30
Venting the Boiler
4. Insert the 90 PVC elbow field supplied to the air intake pipe.
˚
The 90 PVC elbow must have a bird screen(field supplied)
˚
The 90 PVC elbow must face in downward position to prevent
˚
intake of water or snow
View A
BAD
GOOD
Under
50
MIN 18" of PVC extension pipe is required to
eliminate cross contamination .
MIN 12" of clearance from ground or as per
local code requirements is required.
View A
18" - 24"
Min 12"
Appliance must be vented in accordance with the “Venting of Equipment
”
section of the latest edition of the ANSI Z223.1/NFPA 54 Natural Fuel Gas Code in the
USA and/or the
“
Venting systems and air supply for water heaters
”
section of the latest
version of the CAN/CGA B149.1 Natural Gas and Propane Installation Code in Canada,
as well as all applicable local building codes and regulations.
When using PVC elbows or fittings, please make sure to use silicon gel or PVC glue
around the connecting area to prevent the exhaust gas or condensate leakage.
Other Venting Design(Single pipe venting)
●
VC : 3" Schedule 40 PVC
●
Maximum Three 90 Elbows.
˚
●
Maximum Vent Length : 50ft
●
Sloping 1" in 10" - 1" in 12"
(Each 90 elbow is equivalent to 5ft linear vent pipe)
˚
PVC pipe extension is
recommended to prevent
cross contamination.
Must be sealed
with PVC glue &
high temp silicon
Other Venting Design(Snorkel flue)
●
VC : 3" Schedule 40 PVC
●
Maximum Three 90 Elbows.
˚
●
Maximum Vent Length : 50ft
●
Sloping up 2 ~ 3
˚
(Each 90 elbow is equivalent to 5ft linear vent pipe)
˚
PVC pipe extension is
recommended to prevent
cross contamination.
WARNING : In cold climate, freezing air can enter into the vent and cause freeze
damage to unit. See Freeze Protection page in manual for appropriate precautions.
Must be sealed
with PVC glue &
high temp silicon
