FB4CNF
FB4CNP
FX4D
Installation Instructions
FAN COIL UNITS
FOR R−410A REFRIGERANT
SIZES 018 TO 061
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS 1........................
INTRODUCTION 1..................................
HEATER PACKAGES 2..............................
INSTALLATION 2...................................
Step 1 — Check Equipment 2.........................
Step 2 — Mount Unit 2..............................
Step 3 — Air Ducts 4...............................
Step 4 — Electrical Connections 4.....................
Step 5 — Refrigerant Tubing Connection and Evacuation 7..
Step 6 — Refrigerant Flow−Control Device 7.............
Step 7 — Condensate Drains 7........................
Step 8 — Accessories 8..............................
Step 9 — Sequence of Operation 8.....................
START−UP PROCEDURES 9..........................
CARE AND MAINTENANCE 9........................
AIRFLOW PERFORMANCE TABLES 9.................
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
.
When 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.
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury
or death.
Before installing or servicing unit, always turn off all power to
unit. There may be more than one disconnect switch. Turn off
accessory heater power if applicable. Lock out and tag switch
with a suitable warning label.
!
WARNING
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 and gloves when
handling parts.
CAUTION
!
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 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.
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