Nortek AB 175, Установка, эксплуатация и запасные части

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Form I-A C (2-17), Page 10
6.2 Venting
WARNING
The vent must be installed in accordance with national and local
regulations. Failure to provide proper venting could result in
death, serious injury and / or property damage. This unit must be
installed with a vent to the outside of the building. Safe operation
of any power-vented, gas-fired equipment requires a properly
operating vent system, correct provision for combustion air and
regular maintenance and inspection.
Venting must be in accordance with the National Fuel Gas Code Z223.1
or CSA B149.1 and b149.2, Installation Code for Gas Burning Appliances
and Equipment and all local codes. Local requirements supersede national
requirements. Combustion air for this heater only provided from surrounding
ambient air. Flue products must always be vented to the outdoors.
Installation should be done by a qualified agency in accordance with these
instructions. The qualified agency installing the vent or vent/combustion air
system is responsible for the installation.
The venting systems illustrated in this manual are the only ones approved for
these Air Curtain units.
All pipe is field supplied. Requirements for vent pipe(s) as follows:
•
Vent pipe approved for Category III appliance OR single wall, 26-gauge or heavier
galvanized (or material of equivalent durability and corrosion resistance) vent
pipe is required between the air curtain combustion exhaust and the vent terminal
section.
•
Double-wall (Type B) vent pipe is required for the vent terminal section. The length
of pipe that extends through roof or wall.
A fixed flue must be installed on all air curtains. The fan is fitted with a 5-1/8” (130 mm)
diameter female outlet.
The flue pipe needs to be supported every 6’-0” (1.8 M) and terminated externally with
a 6”dia (152 mm) CC1 vent cap (P/N 111850).
The flue pipe may be installed vertically or horizontally, refer to FIGURES 6, 7A & 7B .
Ventilation should meet a minimum of 0.5 air changes per hour using appropriately
sized fans interlocked with the unit.
In applications where air changes are less than 0.5 per hour, additional mechanical or
natural ventilation is required.
WARNING
All vent terminals must be positioned or located away from fresh
air intakes, doors and windows to preclude combustion products
from entering occupied space. Failure to comply could result in
severe personal injury or death / or property damage.
WARNING
Units installed in multiples require individual vent pipe runs
and vent caps. Manifolding of vent runs is not permitted due to
possible recirculation of combustion products into the building
and back pressure effects on the combustion air switch.
Vent Pipe
6.0 Mechanical
(cont’d)