Comfort-Aire FMG****X1E Series - Manual (Page 4)

4
Minimum Clearances
• This appliance must be installed in accordance with
clearances listed in Table 1. The air handler must be
installed with ample clearance for easy access to the
air filter, blower assembly, burner assembly, controls,
and vent connections.
• Sufficient clearance for unobstructed airflow through a
louvered door must be maintained in order to achieve
rated performance.
Operation of Air Handler During Construction
CAUTION:
Failure to follow these instructions will void the
factory warranty and may significantly reduce
the life or the performance of the air handler,
and/or result in other unsafe conditions. It is
the responsibility of the installing contractor
to insure these provisions are met.
Operating an air handler in a construction environment
can cause the appliance a variety of problems. Proper
use of commercial portable space heating equipment
during construction is recommended. This air handler
may be used during construction if it is not in violation of
any applicable codes and the following criteria are met:
• The installation (including electrical supply, gas supply,
and duct work), must meet all applicable codes and
be permanently installed according to the instructions
supplied with the air handler.
• The air handler must be controlled by a properly installed
thermostat that complies with the current provisions
of the NEC (ANSI/NFPA 70) and all applicable codes
having jurisdiction. Thermostat connections must be
made in accordance with instructions supplied with the
air handler and thermostat.
• The installation must include a properly installed filter in
the return air system with no by-pass air. The filter must
be inspected frequently and replaced when necessary.
• Return air must be supplied unrestricted and located
such that dust and gases from construction activity are
not introduced into the circulating air system.
• Before occupying the structure: The filter must be
replaced or cleaned, the duct work must be inspected
and cleaned of any construction debris, and the furnace
must be cleaned and/or repaired if found to be dirty,
damaged, or malfunctioning in any way by a qualified
HVAC technician. The air handler shall be inspected
and approved by applicable local authority even if this
requires redundant inspections.
• The serial number for the air handler used during
construction must be submitted in writing (fax and
email also acceptable). This information will be used to
track the long-term affects of air handler usage during
construction. Proof of this submittal shall be available for
the final inspection of the air handler prior to occupancy.
Installation in a Garage
WARNING:
Do not place combustible materials on or against
the cabinet. Do not place flammable materials,
(gasoline, paint thinners, etc.) or any other
flammable vapors and liquids, in the vicinity
of the air handler.
The FMG series air handler may be installed in a residential
garage with the provision that the unit must be located or
protected to prevent physical damage by vehicles .
Plenums & Air Ducts
This unit is designed only for use with a supply and return
duct. Air ducts should be installed in accordance with the
standards of the National Fire Protection Association
Standard for Installation of Air Conditioning Systems
(NFPA 90A), Standard for Installation of Residence Type
Warm Air Heating and Air Conditioning Systems (NFPA
90B), and all applicable local codes. NFPA publications
are available by writing to: National Fire Protection
Association, Batterymarch Park, Quincy, ME 02269 or visit
www.NFPA.org on the web.
WARNING:
All return ducts must be secured to the air
handler with appropriate fasteners. All return
ducts must be adequately sealed. When return
air is provided through the bottom of the unit,
the joint between the air handler and the return
air plenum must be air tight.
Return air and circulating air ducts must not be
connected to any other heat producing device
such as a fireplace insert, stove, etc. This may
result in fire, explosion, carbon monoxide
poisoning, personal injury, or property damage.
• Plenums and air ducts must be installed in accordance
with the Standard for the Installation of Air Conditioning
and Ventilating Systems (NFPA No. 90A) or the
Standard for the Installation of Warm Air Heating and
Air Conditioning Systems (NFPA No. 90B).
• Design the duct work according to methods described
by the Air Conditioning Contractors of America (ACCA).
• The return air duct must have the same free area as
the opening provided on the blower coil unit.
• The ducts should be appropriately sized to the capacity
of the air handler to ensure its proper airflow rating.
• It is good practice to seal all connections and joints
with industrial grade sealing tape or liquid sealant.
Requirements for sealing ducts vary from region to
region. Consult with local codes for requirements specific
to your area.