International Comfort Products FMC4X, FMC4P Installation Manual

INSTALLATION INSTRUCTIONS

CASED HORIZONT AL F AN COIL UNIT

FMC4X, FMC4P

NOTE: Read the entire instruction manual before starting

installation.

These instructions must be read and understood

completely before attempting installation.

TABLE OF CONTENTS

PAGE

SAFETY CONSIDERATIONS 1.........................

INTRODUCTION 1....................................

INSTALLATION 2.....................................

Step 1 — Check Equipment 2.........................

Step 2 — Mount Fan Coil 2...........................

Step 3 — Supply--Air Connections 3....................

Step 4 — Condensate Drain 3.........................

Step 5 — Electrical Connections 3.....................

Step 6 — Select Proper Blower Speed 4................

Step7—TXV 4.....................................

START-- UP 4.........................................

SEQUENCE OF OPERATION 5.........................

CARE AND MAINTENANCE 5..........................

AIRFLOW PERFORMANCE TABLES 5..................

WIRING DIAGRAM 6..................................

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 individual instructions packaged with kits or
accessories when installing.

Follow all safety codes. Wear safety glasses, protective
clothing, and work gloves. Use quenching cloth for brazing
operations. Have a fire extinguisher available. Read these
instructions thoroughly and follow all warning 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 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 instructions

or 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.

INTRODUCTION

FMC4X, FMC4P Fan Coils are designed for horizontal
orientation and are suitable for ceiling installations in
conditioned space. These units are available with
field--installed electric heat, and are used indoors as the fan

coil for split--system heat pumps or air conditioners. The

FMC4P models use a refrigerant piston metering device and

are available in 18,000 through 36,000 Btuh nominal cooling
capacities. The FMC4X models have a factory--installed TXV
and are available in 18,000 through 30,000 Btuh nominal
cooling capacities. All units utilize a 3--speed PSC motor.

Field--installed heaters are available in 5, 7.5, and 10 kW
sizes. The coil is equipped with sweat -- type connections and
is vapor-- charged with dry nitrogen.

Units are designed for horizontal applications only. Local
codes may limit free-- air--return type installation to
single--level applications.

NOTE: Nuisance sweating may occur if the unit is installed in
a humid location with low airflow.

!

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 1
disconnect switch. Turn off accessory heater
power if applicable. Lock out and tag switch with a
suitable warning label.

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.

WARNING

!

!

WARNING

EXPLOSION HAZARD

Failure to follow this warning could
result in death, serious personal
injury, and/or property damage.

Never use air or gases containing
oxygen for leak testing or operating
refrigerant compressors. Pressurized
mixtures of air or gases containing
oxygen can lead to an explosion.

CAUTION

Specifications subject to change without notice.

496 01 8201 02 4/7/16

INSTALLA TION INSTRUCTIONS Fan Coil: FMC4X, FMC4P

Figure 1 -- Dimensional Drawing

Table1–DimensionalData

Dimensions- inches [mm]

Model Size

18 39-3/4 [1010] 30--- 3/8 [771] 28 [711] 43--- 3/8 [1101] 109 (49)
24 39-3/4 [1010] 30--- 3/8 [771] 28 [711] 43--- 3/8 [1101] 109 (49)
30 51--- 3/4 [1315] 42 ---3/8 [1076] 40 [1016] 55--- 3/8 [1406] 135 (61)
36 51--- 3/4 [1315] 42 ---3/8 [1076] 40 [1016] 55--- 3/8 [1406] 135 (61)

INSTALLATION

Step 1 — Check Equipment

Unpack unit and move to final location. Remove from carton,
avoid lifting from blower wheels, 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 rating plate on unit. It contains information
needed to properly install unit. Check rating plate to be sure
unit matches job specifications.

NOTE: Installation clearance from combustible materials is 0”
(0 mm) from unit and supply--air duct.

Step 2 — Mount Fan Coil

For conversion to horizontal return:

1. Remove the back panel from the casing assembly.

2. Using the dimples on the back of the casing as a
guide, pre--cut the insulation and remove to prevent
damage that may occur while cutting the new return
opening.

3. Cut the return opening into the sheet metal using the

A B C D

4. Reinstall the back panel on to the casing.

5. Field fabricate and mount an insulated cover panel to
completely seal bottom return opening of the fan coil.

Fan Coil Mounting

Mounting brackets are provided on all four corners of the
casing for attachment of the fan coil to supporting structure.
The supporting structure must be designed to safely support
the full weight of the fan coil. Field supplied washers and
bolts capable of supporting the fan coil load should be used
to secure the fan coil to the supporting structure at the
mounting brackets.

The fan coil must be mounted level to ensure proper drainage
of condensate. If the supporting structure is not level at the
points of fan coil attachment, then spacers must be used to
level the fan coil.

After mounting unit, install refrigerant tubing as follows:

1. Route tubing to connection points.

2. Remove plugs from liquid and vapor lines.

3. Wrap the TXV or piston body with a wet rag to prevent
overheating.

Unit Operating Weight

dimples as a guide.

A150210

lbs (kg)

2 496 01 8201 02

Specifications subject to change without notic e.