Nortek R104HD Series, Руководство по установке

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7
WARNING:
Installation methods other than those described
in the following sections must comply with the
National Fuel Gas Code and all applicable local
codes for providing sufficient combustion air
to the unit.
• Provisions must be made during the installation of
this unit that provide an adequate supply of air for
combustion.
• Instructions for determining the adequacy of an
installation can be found in the current revision of the
NFGC (ANSI Z223.1 / NFPA54). Consult local codes
for special requirements
. These requirements are for
US installations as found in the NFGC.
• The requirements in Canada (B149.1) are structured
differently. Consult with B149.1 and local code officials
for Canadian installations.
WARNING:
Combustible air must not be drawn from a
contaminated atmosphere. Excessive exposure
to contaminated combustion air will result in
safety and performance related problems.
To maximize heat exchanger life, the combustion air
must be free of chemicals which form corrosive acidic
compounds in the combustion gases.
IMPORTANT NOTE:
Do not store any chemicals with flammable or caustic
vapors near the vent termination. Some examples of
these chemicals are:
• C
arbon tetraChloride
• G
asoline
/K
erosene
• C
ements
,
Glues
,
paint removers
,
varnishes
,
etC
.
• h
aloGen type refriGerants
• C
leaninG solvents
• h
ydroChloriC aCid
• C
hlorine based swimminG pool
ChemiCals
• m
asonry aCid washinG materials
• C
hlorinated waxes
&
Cleaners
• p
ermanent wave solutions
• d
e
-
iCinG salts or ChemiCals
• w
ater softeninG ChemiCals
Vent Termination
This unit has been developed for use with a combination
heat exchanger condensate drain and venting system
designed to operate only with this type of system.
Condensate Drain and Vent Kits are available for purchase
as accessory items.
Horizontal ground mount applications can use P/N-922323
to attach the 13.25” x 2” PVC pipe within the control area of
this unit. Rooftop mount applications can use the downflow
condensate drain / vent kit (P/N-922485). If any of these
kits are not being used, see Appendix on page 42 or
page 44 for your specific application.
HORIZONTAL GROUND MOUNT
Combined condensate
Drain / Vent System
ROOF MOUNTED UNIT
(ROOF CURB AND ROOF NOT SHOWN)
2” PVC x 22.5 Degree Elbow
& 1/4” Mesh Screen
Figure 2. Heat Exchanger Condensate Drain
& Vent Assembly
WARNING:
This unit is intended for outdoor installation
only. This unit must be vented to the outdoors.
No additional venting shall be used. Do not vent
the unit through a conventional venting system.
The vent and drain assembly must be installed to
assure proper operation of the unit. Figure 2 shows the
proper installation of the vent and drain assembly for both
horizontal and downflow applications. The fasteners used
to secure the vent and drain assembly have been included
in the kit. The following list summarizes the requirements
for the location of the vent system termination:
• The location of the vent termination must be consistent
with the National Fuel Gas Code (ANSI Z223.1) or CAN/
CGA-B149 Installation Codes.
• The vent termination must be located at least 4 feet
horizontally from any electric meters, gas meters,
regulators, and relief equipment.