John Wood Condensing - JWC111-DV - Manuel (Page 11)

11
8.
Vent Pipe Installation
(Indoor Installation Only)
WARNING
Be sure to do
CARBON MONOXIDE POISONING
Follow all vent system requirements in accordance with relevant local or state regulation,
or, in the absence of local or state code, in the U.S. to the National Fuel Gas Code ANSI
Z233.1/NFPA 54 – latest edition, and in Canada, in accordance with CSA-B149.1.
• This appliance may be vented with either
PVC or CPVC schedule 40 pipe.
Refer to page 12 for additional requirements.
• Make sure the vent system is gas tight and
will not leak.
• Support the vent pipe with hangers at regular
intervals as specified by these instructions or
the instructions of the vent manufacturer.
• Do not common vent or connect more than
one appliance to this venting system.
• The total vent length including horizontal & verti-
cal vent runs should be no less than 0.9m (3').
• Do not store hazardous or flammable sub-
stances near the vent termination and check
that the termination is not blocked in any way.
• Steam or condensed water may come out
from the vent termination. Select the location
for the termination so as to prevent injury or
property damage.
• If snow is expected to accumulate, take care
the end of the pipe is not covered with snow
or hit by falling lumps of snow.
Maximum Vent Lengths
• This appliance has been designed to be vented
with 100mm (4") PVC or CPVC pipe. Do not
exceed the following maximum vent lengths:
• Maintain the same vent pipe diameter from the
heater flue to the vent termination.
• If 75mm (3") PVC or CPVC vent pipe is re-
quired, refer to pages 45 - 47 for instructions.
General Requirements
Clearances
PVC or CPVC has been approved for use on this
appliance with zero clearance to combustibles.
Pipe diameter 100mm (4")
No. of Elbows Max. Straight Vent Length*
4 12m (39')
3 14m (45')
2 16m (51')
1 17m (57')
* Not including the termination.