68
RECYCLING AND DISPOSAL
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APPENDIX
APPENDIX
VENTING MATERIAL
Array boilers must be vented and supplied with combustion and
ventilation air as described in this section.
Installation must comply with local requirements and with the
National Fuel Gas Code ANSI Z223.1. Array boilers vent and intake
air piping can be installed through the roof or through a sidewall.
Any of the vent/air piping methods covered in this manual can be
used. Do not attempt to install the boilers using any other means.
Suitable, UL approved, positive pressure, watertight vent materials
MUST be used for safety and UL certication.
Array boiler can use the following material for venting:
Material Standard
Maximum Flue
Temperature (°F)
Approved Man-
ufacturers
CPVC Schedule
40, 80
ANSI/ASTM
F441
194
Polypropylene ULC S636 230
Centrotherm Eco
Systems (InnoFlue
SW)
AL29-4C
stainless steel
UL 1738
300+, limited only
by rating of seals
For specic venting components (terminals, ttings), contact the
respective vent manufacturer.
9
DANGER: It is extremely important to follow these venting in-
structions carefully. Failure to do so can cause severe personal
injury, death or substantial property damage.
7
9
DANGER: Use of cellular core PVC (ASTM F891), cellular core CPVC
or Radel® (polyphenosulfone) in venting systems is prohibited.
9
WARNING: Do not connect this gas appliance with any other
appliance unless approved by manufacturer. Failure to comply
with this WARNING could result in the accumulation of carbon
monoxide gas which can cause severe personal injury or death.
9
DANGER: The condensate traps must be lled with water or
combustion gases will enter the room with a risk of an exces-
sive level of carbon monoxide.
7
− Vent connectors serving appliances vented by natural draft
shall not be connected to any portion of mechanical draft
systems operating under positive pressure.
− Ensure the ue pipes and seals are not damaged.
− Use only primer and glue compounds approved for use
with the vent material used.
− Never install a barometric or a thermally controlled vent
damper with this boiler.
− Do not route the ue system piping through or inside an-
other duct that is used for exhausting air or other ue gas-
es.
− The condensate traps must be primed at all times. Failure
to do so may allow combustion gases to escape into the
boiler room.
− The unit is to be used for either direct vent installation or for
installation using room air for combustion. When room air
is used, it is necessary to provide an adequate opening for
the fresh make-up air intake.
− You must use any of the vent/air piping methods shown in
this manual.
− Be sure to locate the unit such that the vent and combus-
tion air piping can be routed through the building and
properly terminated.
− The boiler / vent installation must be in accordance with
Venting of Appliances, of the latest edition of the National
Fuel Gas Code, ANSI Z223.1/NFPA or applicable provisions of
the local, state and federal building codes.
− All vent pipes must be installed according to the vent man-
ufacturer’s instructions.
− The exhaust vent and the combustion air inlet lines must
be supported to prevent sagging per the vent manufactur-
er’s instructions.
− The boiler must not support the weight of any ductwork.
− Do not mix components from different systems. The vent
system could fail, causing leakage of ue products into the
living space. Use only approved materials.
− Use of cellular core PVC and CPVC for venting system is not
allowed.
− The vent system shall be installed so as to prevent the ac-
cumulation of condensate.
− Consult local and state codes pertaining to special building
code and re department requirements. Adhere to nation-
al code requirements.
− Observe the listed maximum lengths of vent system, which
are boiler model dependent.
− To avoid moisture and frost build-up and to maintain
clearances to openings on adjacent structures, 45° and 90°
elbows or tees may be attached to the end of the vent ter-
mination pipe to direct exhaust plumes away from the ad-
jacent structure. The total allowable vent length, maximum
number of elbows and distance of air intake restrictions
must be adhered to.
− Due to the high efciency of the unit it may discharge what
looks like white smoke especially when the outside air
temperature is cold. This is due to the presence of water
vapor, normally present in the exhaust gases.
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