Accel CS Boiler - Gas Heat - Eighth Edition – January, 2015 15
VENTING MATERIALS AND OPTIONS
The Accel CS Boiler can generate exiting flue gas temperatures between room temperature and 230
o
F, depending on
the modulated firing rate and the boiler water temperature. The Accel CS boiler can be safely vented using a variety of
venting materials. Approved materials include stainless steel, such as 316, 316L, 316Ti or AL 29-4C. Plastic venting
products made from polypropylene are approved. Plastic venting products made from other plastics, such as PVC, CPVC,
or ABS are not approved. Any of the plastic pipe materials may be safely used for air intake piping, but not for venting.
The venting materials for the Accel CS boiler may be obtained from Energy Kinetics, from Z-Flex, from Centrotherm or
from DuraVent. The Z-Flex, Centrotherm and DuraVent products may also be obtained from any stocking distributor that
carries these products.
Where to obtain venting materials
Energy Kinetics Stainless steel
Energy Kinetics EK1 or EK2
sidewall vent kit
800-323-2066 www.EnergyKinetics.com
Venting material must be Listed by a nationally recognized testing agency.
Approved Vent and Air Inlet Pipe Material
Appliance Adapter
1
Stainless Steel (AL29-4C)
Polypropylene
Vent Pipe & Fittings
1
Stainless Steel (AL29-4C)
Polypropylene (PPs)
Air Inlet Pipe & Fittings
Polypropylene (PPs)
1. Only Stainless Steel and Polypropylene material permitted for Venting
2. Use of PVC, CPVC, or ABS is only allowed for Air Inlet piping
The Accel CS boiler may be vented using several different options, materials, and methods.
1) Energy Kinetics EK1 or EK2 sidewall vent kit using 3” Z-Vent III piping.
2) Sidewall venting using Polypropylene in 2”, 3” or 4” diameters.
a) Two pipe with low profile termination (2” & 3” only).
b) Two pipe with snorkel termination.
c) Concentric through the wall (2/4”, 3/5” or 4/6”).
3) Vertically with Polypropylene in 2”, 3” or 4” diameters.
a) Using a chimney as a chase.
WARNING: Sidewall vent systems must have outside air connected to the boiler and both intake and vent hood must be
located on the same side of the structure. Vertically vented systems should have outside air connected to the boiler.
The Accel CS boilers have a flue collar made of Z-Vent III AL29-4C stainless steel - 3” on the EK1C / 4” on the EK2C &
EK3C. If the boiler is vented using Z-Vent III stainless steel vent materials, then the venting may be directly connected to
the flue outlet. If the boiler is vented using either of the two polypropylene materials, then a stainless steel to polypropylene
appliance adapter is required. The fresh air inlet pipe size at the boiler is 3” on the EK1C / 4” on the EK2C & EK3C. PVC
pipe may be used for air inlet only. When using one of the approved polypropylene terminations, it may be necessary to
adapt from PVC to polypropylene using the appropriately sized PVC to polypropylene adapter.
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