Part 6: Venting, Combustion Air & Condensate Removal; Installing Exhaust Vent And Intake Air Vent; General; Approved Materials For Exhaust Vent And Intake Air Vent - Heat Transfer MODCON VWH 300 LP Installation & Maintenance

PART 6: VENTING, COMBUSTION AIR & CONDENSATE REMOVAL
A. INSTALLING EXHAUST VENT AND
INTAKE AIR VENT
n
DANGER
The Mod Con Boiler must be vented as detailed
in this section. Ensure the exhaust and intake
piping comply with these instructions regarding
the venting system.
Inspect finished combustion air intake and
exhaust piping thoroughly to ensure all joints
are secure and airtight and comply with all
applicable code requirements, as well as with
the instructions provided in this manual.
Failure to provide a properly installed vent
system will cause severe personal injury or
death.
n
WARNING
This vent system will operate with a positive
pressure in the pipe. Do not connect vent
connectors serving appliances vented by natural
draft into any portion of mechanical draft
systems operating under positive pressure.
Follow these venting instructions carefully.
Failure to do so may result in severe personal
injury, death, or substantial property damage.
B. GENERAL
1. Install the boiler venting system in
accordance with these instructions and with
t h e N a t i o n a l Fu e l G a s C o d e , A N S I
Z223.1/NFPA 54, CAN/CGA B149, and/or
applicable provisions of local building codes.
2. This boiler is a direct vent appliance and is
listed as a Category IV appliance with
Underwriters Laboratories, Inc.
C. APPROVED MATERIALS FOR EXHAUST
VENT AND INTAKE AIR VENT
1. Use only Non Foam Core venting material or
AL294C. The following materials are
approved for use as vent pipe for this boiler.
See Tables 6-1 through 6-7 for all approved
venting.
GAS-FIRED HOT WATER SUPPLY BOILER
n
WARNING
Use only the materials listed in Tables 6-1
through 6-7 for the venting systems. Failure to
do so could result in severe personal injury,
death or substantial property damage.
REQUIREMENTS FOR INSTALLATION
IN CANADA
1. Installations must be made with a vent pipe
system certified to ULC-S636. IPEX is an
approved vent manufacturer in Canada in
Canada supplying vent material listed to
ULC-S636. Additionally you may use AL244C
stainless steel venting to comply with
Canadian requirements.
2. The first three (3) feet of vent pipe from the
appliance flue outlet must be readily
accessible for visual inspection.
3. The components of the certified vent system
must not be interchanged with other vent
systems or unlisted pipe / fittings.
n
WARNING
Do not use Cellular Foam Core Pipe in any portion
of the exhaust piping from this boiler. Use of
Foam Core Pipe may result in severe personal
injury, death, or substantial property damage.
Cellular foam core piping may be used on air
inlet piping only.
Boiler Manual
28