Table of Contents
Advertisement
FA4B, FB4B, FC4C
FH4B
NOTE: Read the entire instruction manual before starting the installation.
This symbol → indicates a change since the last issue.
Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may
cause 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 and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Read
these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local building codes and National Electrical Code
(NEC) for special requirements.
Recognize safety information. This is the safety-alert symbol
the potential for personal injury.
Understand the signal words DANGER, WARNING, CAUTION, and NOTE. 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 would 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: 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. Electrical shock can cause personal injury or death.
Models FA4B, FB4B, FC4C, and FH4B 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 available for systems
of 18,000 through 60,000 Btuh nominal cooling capacity. Factory authorized electric heater packages are available in sizes 3 through 30kw. See
Product Data Literature for available accessory kits.
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 difference is not an error and is due to calculation difference per UL guidelines.
PROCEDURE 1—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.
PROCEDURE 2—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.
A. 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. 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.
Form: IM-FA4B-02
Fan Coil Units
SAFETY CONSIDERATIONS
. When you see this symbol on the unit and in instructions manuals, be alert to
INTRODUCTION
HEATER PACKAGES
INSTALLATION
Cancels: IM-FA4B-01
Printed in U.S.A.
6-03
Catalog No. 63FA-4B1
Advertisement
Table of Contents
Related Manuals for Carrier FB4B
Summary of Contents for Carrier FB4B
- Page 1 INTRODUCTION Models FA4B, FB4B, FC4C, and FH4B 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.
- Page 2 POWER ENTRY FIELD SUPPLIED OPTIONS SUPPLY DUCT LOW VOLT ENTRY OPTIONS 018-060 21-IN. FRONT SERVICE 070 24-IN. CLEARANCE UNIT 018/024 12 In. 030/036 17 In. A COIL 19 In. UNITS UPFLOW/DOWNFLOW SECONDARY DRAIN ⁄ ″ UPFLOW/DOWNFLOW 19 ″ PRIMARY DRAIN FIELD MODIFIED SIDE RETURN LOCATION FOR...
- Page 3 A-COIL HORIZONTAL LEFT PRIMARY SECONDARY DRAIN FIELD DRAIN SUPPLIED HANGING STRAPS 018-060 21-IN. 070 24-IN. FRONT SERVICE CLEARANCE UNIT (FULL FACE OF UNIT) LOW VOLT ENTRY OPTIONS 1 3 /4 IN. FILTER ACCESS CLEARANCE PRIMARY DRAIN SECONDARY DRAIN POWER ENTRY OPTIONS A00070 Fig.
- Page 4 BLOWER BOX 2 SCREWS 2 SCREWS REAR CORNER BRACKET 2 SCREWS COIL BOX A95293 Fig. 3—Removal of Brackets on Modular Units COIL MOUNTING BLOWER SCREW ASSEMBLY COIL SUPPORT RAIL SLOPE COIL DRAINPAN PRIMARY DRAIN REFRIGERANT CONNECTIONS SECONDARY DRAIN A03001 Fig. 4—Conversion for Horizontal Right Applications Using a Slope Coil 10.
- Page 5 REFRIGERANT AIR SEAL CONNECTIONS ASSEMBLY HORIZONTAL RIGHT APPLICATION COIL SUPPORT RAIL COIL BRACKET DRAIN PAN SUPPORT BRACKET COIL SUPPORT RAIL COIL BRACKET HORIZONTAL DRAIN PAN PRIMARY DRAIN HORIZONTAL RIGHT SECONDARY DRAIN HORIZONTAL RIGHT A00071 Fig. 5—Conversion for Horizontal Right Applications Using A-Coil 14.
- Page 6 COIL FACTORY SHIPPED BRACKET HORIZONTAL LEFT APPLICATION COIL SUPPORT RAIL DRAIN PAN SUPPORT BRACKET COIL BRACKET HORIZONTAL DRAIN PAN PRIMARY DRAIN HORIZONTAL LEFT AIR SEAL ASSEMBLY SECONDARY DRAIN HORIZONTAL LEFT REFRIGERANT CONNECTIONS A00072 Fig. 6—A-Coil in Horizontal Left Application (Factory Ready) 4”...
- Page 7 LR40061 A03010 Fig. 8—Fan Coil Printed-Circuit Board On units with a factory installed disconnect with pull-out removed, service and maintenance can be safely performed on only the load side of the control package. WARNING: Field wires on the line side of the disconnect found in the fan coil unit remain live, even when the pull-out is removed.
- Page 8 FAN COIL THERMOSTAT (CONTROL) AIR COND. A94058 Fig. 9—Wiring Layout Air Conditioning Unit (Cooling Only) FAN COIL THERMOSTAT (CONTROL) AIR COND. A94059 Fig. 10—Wiring Layout Air Conditioning Unit (Cooling and 1-Stage Heat) → C. Manufactured Housing In Manufactured Housing applications, the Code of Federal Regulations, Title 24, Chapter XX, Part 3280.714 requires that supplemental electric heat be locked out at outdoor temperatures above 40 degrees F., except for a heat pump defrost cycle.
- Page 9 FAN COIL HEAT PUMP THERMOSTAT (CONTROL) (CONTROL) A94060 Fig. 11—Wiring Layout Heat Pump Unit (Cooling and 2-Stage Heat with No Outdoor Thermostat) FAN COIL HEAT PUMP THERMOSTAT (CONTROL) (CONTROL) ODTS A94061 Fig. 12—Wiring Layout Heat Pump Unit (Cooling and 2-Stage Heat with 1 Outdoor Thermostat) PROCEDURE 5—REFRIGERANT TUBING Use accessory tubing package or field-supplied tubing of refrigerant grade.
- Page 10 FAN COIL HEAT PUMP THERMOSTAT (CONTROL) (CONTROL) ODTS A03088 → Fig. 13—Wiring Layout Heat Pump Unit (Cooling and 2-Stage Heat for Manufactured Housing) FAN COIL HEAT PUMP THERMOSTAT (CONTROL) (CONTROL) ODTS1 ODTS2 EMERGENCY HEAT RELAY A94062 Fig. 14—Wiring Layout Heat Pump Unit (Cooling and 2-Stage heat with 2 Outdoor Thermostats) PROCEDURE 6—REFRIGERANT FLOW-CONTROL DEVICE CAUTION: If using a TXV (FC4C factory installed) in conjunction with a single-phase reciprocating compressor, a...
- Page 11 SECONDARY PRIMARY A94067 Fig. 15—Transformer Connections FAN RELAY SINGLE SPADE INSULATING CAP (2) MOTOR SPEED TAP LEADS SPEED TAP TERMINAL WRAPPER COMMON YELLOW FAN DECK A97529 Fig. 16—Fan Coil Relay and Speed Tap Terminal CAUTION: The conversion of the fan coil to downflow requires special procedures for the condensate drains on both A-coil and Slope units.
- Page 12 TEFLON SEAL BRASS PISTON DISTRIBUTOR HEX NUT PISTON BRASS RETAINER HEX BODY STRAINER A94415 Fig. 17—Refrigerant Flow-Control Device (FC4C has TXV and Strainer) UNIT 2” MIN 2” MIN A03002 Fig. 18—Recommended Condensate Trap NOTE: If unit is located in or above a living space where damage may result from condensate overflow, a field-supplied, external condensate pan should be installed underneath the entire unit, and a secondary condensate line (with appropriate trap) should be run from the unit into the pan.
- Page 13 DO NOT USE SHALLOW RUNNING TRAPS! A03013 Fig. 19—Insufficient Condensate Trap FILTER ACCESS PANEL SECONDARY DRAIN WITH APPROPRIATE TRAP REQUIRED (USE FACTORY KIT OR FIELD-SUPPLIED TRAP) PRIMARY TRAP REQUIRED (USE FACTORY KIT OR FIELD-SUPPLIED TRAP OF SUFFICIENT DEPTH. STANDARD P-TRAPS ARE NOT SUFFICIENT.
- Page 14 CONTROL BOARD FAN RELAY G T C C C 230VAC NO NC WIRE 208/230VAC 24VAC CONVERSION KIT TRANSFORMER BLOWER MOTOR 208/ TO EAC FROM MOLEX PLUG AND TRANSFORMER (IN UNIT) A03011 Fig. 21—Wiring Layout of Electronic Air Cleaner to Fan Coil FAN COIL HEAT PUMP THERMOSTAT...
- Page 15 FAN COIL THERMOSTAT (CONTROL) AIR COND. HUMIDISTAT FAN HUMIDIFIER 115V A95295 Fig. 23—Wiring Layout of Humidifier to Fan Coil with Electric Heat SPDT 24VAC COIL 230VAC 15A FAN RELAY HIGH SPEED SPEED DEHUMIDISTAT MOTOR MOTOR (OPENS ON RINSE) A03012 Fig. 24—Latent Capacity Control The ability to properly perform maintenance on this equipment requires certain mechanical skills and tools.
- Page 16 imfa4b02 —16— © 2003 CAC/BDP 7310 W. Morris St., Indianapolis, IN 46231 Book/Tab: 1/4,3d/2e Catalog No. 63FA-4B1...