Instruction manual

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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 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 the 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

. When you see this symbol on the unit and in instructions or manuals, be alert

to the potential for personal injury.

Understand the signal word DANGER, WARNING, or 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 would result in minor personal injury or product and property damage.

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.

INSTALLATION

PROCEDURE 1—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 CABO M-1701.2, UMC 1205, or SBCCI 603.4

may require a field-supplied secondary condensate pan to be installed under the entire unit or unit to have a secondary condensate line.

Table 1—Accessories

ACCESSORY PART NO. MODEL APPLICATION

Power Plug Kit (25 pack) KFAPP0125PLG All Models

Downflow Coil Conversion Kit*

KFADC0201SLP

FA4A, FB4A 018-042, FC4B 024-036, 042

FH4A 001, 002

KFADC0301ACL

FA4A, FB4A 048-070, FC4B 038, 048-070

FH4A 003, 004

Downflow Base Kit†

KFACB0101CFB

FA4A, FB4A 018, 024, FC4B 024

FH4A 001

KFACB0201CFB

FA4A, FB4A, FC4B 030, 036

FH4A 002

KFACB0301CFB

FA4A, FB4A 042-060, FC4B 033-048, 060

FH4A 003, 004

KFACB0401CFB FB4A 070, FC4B 054, 070

Filter Kits (12 packs)

KFAFKO112SML FA4A 018, 024, FB4A 018, 024, FC4B 024, FH4A001

KFAFK0212MED FA4A 030, 036, FB4A 030, 036, FC4B 030, 036, FH4A002

KFAFK0312LRG

FA4A 042-060, FB4A 042-060, FC4B 033, 038, 042-060

FH4A 003, 004

KFAFK0412XXL FB4A 070, FC4B 054, 070

* Required to mount coil in unit, including condensate control parts.

† Eliminates open passage through building floor per UL and NFPA90B.

Installation Instructions

FA4A, FB4A, FC4B

FH4A

Direct Expansion Fan Coil Units

Fan Unit

Form: IM-FA4A-03 Cancels: IM-FA4A-02 Printed in U.S.A. 1-95 Catalog No. 92-33FA-4A18

Summary of content (10 pages)

PAGE 1
Installation Instructions Direct Expansion Fan Coil Units Fan Unit FA4A, FB4A, FC4B FH4A 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 personal injury or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance.
PAGE 2
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. POWER ENTRY OPTIONS FIELD SUPPLIED SUPPLY DUCT LOW VOLT ENTRY OPTIONS 24-IN. FRONT SERVICE CLEARANCE UNIT 018/024 030/036 042 A-COIL UNITS UPFLOW/DOWNFLOW SECONDARY DRAIN A 12 In.
PAGE 3
A-COIL IN HORIZONTAL LEFT SECONDARY PRIMARY FIELD SUPPLIED HANGING STRAPS 24-IN. FRONT SERVICE CLEARANCE (FULL FACE OF UNIT) UNIT LOW VOLT ENTRY OPTIONS OPTIONAL RETURN AIR FLANGE KIT PRIMARY CONDENSATE DRAIN POWER ENTRY OPTIONS SECONDARY CONDENSATE DRAIN 1 3/4 IN. FILTER ACCESS CLEARANCE A90167 Fig. 2—Slope Coil Unit in Horizontal Left Application BLOWER BOX 2 SCREWS 2 SCREWS REAR CORNER BRACKET 2 SCREWS COIL BOX A90168 Fig.
PAGE 4
COIL MOUNTING SCREW BLOWER ASSEMBLY COIL SUPPORT RAIL COIL SUPPORT RAIL SECONDARY CONDENSATE DRAIN REFRIGERANT CONNECTIONS PRIMARY CONDENSATE DRAIN A90174 Fig.
PAGE 5
c. Remove filler plate (A) and install air splitter (B) in place of filler plate. d. Install filler plate (A) as shown in horizontal right application. e. Remove condensate troughs (C) and install on opposite tube sheets. f. Install hose onto plastic spout. 9. Install horizontal pan on right side of coil assembly with plugged condensate openings to rear of assembly. 10. Slide coil assembly into casing. Be sure coil bracket on each corner engages coil support rails. 11.
PAGE 6
A. Line Voltage Connections Units installed without electric heat require the use of a factory-authorized Power Plug Kit (KFAPP0125PLG). This kit provides the electrical connections necessary to supply the unit with 230-v power when electric heat is not present. This kit is required only on those applications which do not use electric heat. NOTE: It is not necessary to cover the opening for accessory heaters. The unit will perform properly with opening uncovered. B.
PAGE 7
FAN COIL (CONTROL) THERMOSTAT R R G G C C W2 W2 L W3 E E HEAT PUMP (CONTROL) R C W2 ODTS1 ODTS2 O O Y Y C 1 4 7 C 9 6 3 EMERGENCY HEAT RELAY A94062 Fig. 11—Wiring Layout Heat Pump Unit (Cooling and 2-Stage Heat with 2 Outdoor Thermostats) TRANSFORMER INFORMATION Transformer is factory wired for 230-v operation. For 208-v applications, disconnect the black wire from the 230-v terminal on the transformer and connect it to the 208-v terminal. (See Fig. 12.
PAGE 8
C. Ground Connections WARNING: According to NEC, ANSI/NFPA 70, and local codes, the cabinet must have an uninterrupted or unbroken ground to minimize personal injury if an electrical fault should occur. The ground may consist of electrical wire or metal conduit when installed in accordance with existing electrical codes. Failure to follow this warning could result in electric shock, fire, or death.
PAGE 9
PROCEDURE 5—REFRIGERANT FLOW-CONTROL DEVICE CAUTION: If using a TXV (FC4B factory installed) in conjunction with a reciprocating compressor, a compressor start capacitor and relay are required. Consult outdoor unit pre-sale literature for start assist kit part no. Replace piston if required. Check piston size shown on indoor unit rating plate to see if it matches required piston shown on outdoor unit rating plate. If it does not match, replace indoor piston with piston shipped with outdoor unit.
PAGE 10
SECONDARY (TRAP REQUIRED) S PRIMARY 2 1/4-IN. MIN SECONDARY FITTING WITH BUILT IN DAM PRIMARY FITTING FILTER ACCESS PANEL 2 1/4-IN. MIN A90347 Fig. 15—Primary and Secondary Fittings for A-Coil Horizontal Applications © 1995 CAC / BDP P.O. Box 1667, Indianapolis, IN 46206 imfa4a03 A90173 Fig. 16—Condensate Drain —10— Book/Tab: 1/3d, 4/2e Catalog No.