FB4CNF, FB4CNP, FX4D
FAN COIL UNITS
SIZES 018 TO 060
NOTE: Read the entire instruction manual before starting the installation.
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance, or
use can cause explosion, fire, electrical shock, or other conditions which
may cause death, personal injury or property damage. Consult a
qualified installer, service agency, or your distributor or branch for
information or assistance. The qualified installer or agency must use
factory-authorized kits or accessories when modifying this product.
Refer to the individual instructions packaged with kits or accessories
when installing.
Follow all safety codes. Wear safety glasses, protective clothing and
work gloves. Have a fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in literature and
attached to the unit. Consult local building codes and the current editions
of the National Electrical Code (NEC) NFPA 70.
In Canada, refer to the current editions of the Canadian Electrical Code
CSA C22.1.
Recognize safety information. This is the safety-alert symbol
you see this symbol on the unit and in instruction manuals, be alert to the
potential for personal injury.
Understand the signal words DANGER, WARNING, and CAUTION.
These words are used with the safety-alert symbol. DANGER identifies
the most serious hazards which will result in severe personal injury or
death. WARNING signifies hazards which could result in personal
injury or death. CAUTION is used to identify unsafe practices which
may result in minor personal injury or product and property damage.
NOTE is used to highlight suggestions which will result in enhanced
installation, reliability, or operation.
WARNING
!
ELECTRICAL OPERATION HAZARD
Failure to maintain proper clearances could result in personal injury or
death.
Before installing or servicing unit, always turn off all power to unit.
There may be more than 1 disconnect switch. Turn off accessory heater
power if applicable.
CAUTION
!
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and wear
appropriate protective clothing, safety glasses and gloves when
handling parts.
INTRODUCTION
FB4C and FX4D models are R-410A Fan Coils designed for installation
flexibility. These units leave the factory compliant with low leak
requirements of less than 2% cabinet leakage rate at 0.5 inches W.C. and
Installation Instructions
. When
1.4% cabinet leakage rate at 0.5 inches W.C. when tested in accordance
with ASHRAE 193 standard.
FB4CNF(018-048) uses a refrigerant piston metering device. A TXV is
used on FB4CNP and FX4D(018-061). All these fan coils use a
multi-tap ECM motor for efficiency. The units have be designed for
upflow, downflow (kit required), and horizontal orientations, including
manufactured and mobile home applications.
These units require a field supplied air filter, and are designed
specifically for R-410A refrigerant air conditioners and heat pumps as
shipped. These units are available for systems of 18,000 through 60,000
BTUh nominal cooling capacity. Factory- authorized, field - installed
electric heater packages are available in sizes 5 through 30kW. See
Product Data literature for all available accessory kits.
HEATER PACKAGES
This unit may or may not be equipped with an electric heater package.
For units not equipped with factory-installed heat, a factory-approved,
field-installed, UL listed heater package is available from your
equipment supplier. See unit rating plate for a list of factory-approved
heaters. Heaters that are not factory approved could cause damage which
would not be covered under the equipment warranty. If fan coil contains
a factory-installed heater package, minimum circuit ampacity (MCA)
and maximum fuse/breaker may be different than units with a same size
field-installed accessory heater. The differences is not an error and is due
to calculation difference per UL guidelines.
INSTALLATION
CHECK EQUIPMENT
Unpack unit and move to final location. Remove carton taking care not
to damage unit.
NOTE: If the door gasket is damaged or missing, the unit may not meet
the ASHRAE 193 standard for cabinet air leakage. Contact your supplier
and order kit #344994-751.
Inspect equipment for damage prior to installation. File claim with
shipping company if shipment is damaged or incomplete. Locate unit
rating plate which contains proper installation information. Check rating
plate to be sure unit matches job specifications.
MOUNT UNIT
Unit can stand or lie on floor, or hang from ceiling or wall. Allow space
for wiring, piping, and servicing unit.
IMPORTANT: When unit is installed over a finished ceiling and/or
living area, building codes may require a field-supplied secondary
condensate pan to be installed under the entire unit. Some localities may
allow as an alternative, the running of a separate, secondary condensate
line. Consult local codes for additional restrictions or precautions.
NOTE: Nuisance sweating may occur if the unit is installed in a high
humidity environment with low airflow.
UPFLOW INSTALLATION
If return air is to be ducted through a floor, set unit on floor over opening
and use 1/8 to 1/4-in (3 to 6 mm) thick fireproof resilient gasket between
duct, unit, and floor.
Side return is a field option on slope coil models. Cut opening per
dimensions. (See Fig. 1.) A field-supplied bottom closure is required.
