Carrier PF4MNA Installation Instructions Manual

PF4MNA
DIRECT EXPANSION FAN COIL
SIZES 018 TO 061
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.
INTRODUCTION
Model PF4MNA Fan Coils are designed for flexibility and can be used
for upflow, horizontal, or downflow (kit required) and manufactured and
mobile home applications. These units are designed to meet the low air
leak requirements currently in effect. Because of this, the units need
special attention in the condensate pan and drain connection area and
when brazing tubing. These units are designed specifically for R-410A
refrigerant and must be used only with 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 available
accessory kits.
Installation Instructions
. When
HEATER PACKAGES
Factory-approved, field-installed, UL listed heater packages are
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.
INSTALLATION
CHECK EQUIPMENT
Unpack unit and move to final location. Remove carton taking care not
to damage unit.
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. (Fig. 1) A field-supplied bottom closure is required.
DOWNFLOW INSTALLATION
In this application, field conversion of the evaporator is required using
accessory downflow kit along with an accessory base kit. Use fireproof
resilient gasket, 1/8 to 1/4-in (3 to 6 mm) thick, between duct, unit, and
floor.
!
PRODUCT OR PROPERTY DAMAGE HAZARD
Failure to follow this warning caution may result in product or property
damage.
The conversion of the fan coil to downflow requires special procedures
for the condensate drains on both A-coil and Slope-coil units. The
vertical drains have an overflow hole between the primary and
secondary drain holes. This hole is plugged for all applications except
downflow, and must be used for downflow. During conversion process,
remove plastic cap covering vertical drains only and discard. Remove
plug from overflow hole and discard. At completion of downflow
installation, caulk around vertical pan fitting to door joint to retain low
air leak performance of the unit.
CAUTION