AHRI APEX, Инструкция по установке, эксплуатации и обслуживанию

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IV. Venting
A. General Guidelines
1. Listed Vent/Combustion Air Systems
a. Install vent system in accordance with National
Fuel Gas Code , ANSI Z223.1/NFPA 54 or
Natural Gas and Propane Installation Code ,
CAN/CSA B149.1 Installation Code for Canada,
or, applicable provisions of local building codes.
Contact local building or fire officials about
restrictions and installation inspection in your
area.
b. The Apex is a Direct Vent (sealed combustion)
boiler. Combustion air must be supplied directly
to the burner enclosure from outdoors and flue
gases must be vented directly outdoors.
c. The following combustion air/vent system
options are listed for use with the Apex boilers
(refer to Table 4):
i. Two-Pipe CPVC/PVC Vent/Combustion
Air System - Separate CPVC/PVC pipe
serves to expel products of combustion and
separate PVC pipe delivers fresh outdoor
combustion air. Refer to Part B for specific
details.
ii. Two-Pipe Polypropylene Vent/Combustion
Air System - Separate rigid or flexible
polypropylene pipe serves to expel
products of combustion and separate rigid
polypropylene or PVC pipe delivers fresh
outdoor combustion air. Refer to Part C for
specific details.
iii. Two-Pipe Stainless Steel Vent/Combustion
Air System - Separate stainless steel pipe
serves to expel products of combustion
and separate PVC or galvanized steel pipe
delivers fresh outdoor combustion air. Refer
to Part D for specific details.
2. Vent/Combustion Air Piping
a. Do not exceed maximum vent/combustion air
lengths listed in Table 5. Vent/combustion air
length restrictions are based on equivalent length
of vent/combustion air pipe (total length of
straight pipe plus equivalent length of fittings).
Table 6A lists equivalent lengths for fittings.
Do not include vent/combustion air terminals
in equivalent feet calculations. Use vent/
combustion air equivalent length worksheet
provided in Table 6B.
b. Maintain minimum clearance to combustible
materials. See Figure 2 for details.
c. Enclose vent passing through occupied or
unoccupied spaces above boiler with material
having a fire resistance rating at least equal to the
rating of adjoining floor or ceiling.
Note: For one or two family dwellings, fire
resistance rating requirement may not need to be
met, but is recommended.
WARNING
Asphyxiation Hazard. Failure to vent this boiler in accordance with these instructions could cause
products of combustion to enter the building resulting in severe property damage, personal injury or
death.
Do not use a barometric damper, draft hood or vent damper with this boiler.
Do not locate vent termination under a deck.
Do not locate vent termination where exposed to prevailing winds.
Do not locate combustion air termination where chlorines, chlorofluorocarbons (CFC’s), petroleum
distillates, detergents, volatile vapors or other chemicals are present. Severe boiler corrosion and
failure will result.
Use outdoor air for combustion. Do not obtain combustion air from within the building.
Use specified vent and combustion air pipe diameters. Do not reduce specified diameters of vent and
combustion air piping.
Do not interchange vent systems or materials unless otherwise specified.
Do not apply thermal insulation to vent pipe or fittings.
Moisture and ice may form on surface around vent termination. To prevent deterioration, surface must
be in good repair (sealed, painted, etc.).
Do not allow low spots in the vent where condensate may pool.
The CPVC vent materials supplied with this boiler do not comply with
Natural Gas and Propane
Installation Code , CAN/CSA B149.1.S1-07 and are not approved for use in Canadian jurisdictions that
require vent systems be listed to ULC S636-2008. In these jurisdictions, vent this boiler using either
stainless steel Special Gas vent or a listed ULC S636 Class IIB venting system.