ICP FWM1805A1, FWM2400A1, FWM2405A1, FWM2407A1, FWM2411A1 Installation Guide

GeneralInformation

These instructions cover the installation of field-installed
cooling control kits and field-installed electric heater

packages in model FWM series fan coil units. The cooling

control unit is required when electric heat is not used. All

packages contain a solid state fan control with a built-in

time delay relay.

Use these instructions in conjunction with the
installation instructions packaged with the unit being

installed.

DESCRIPTIONANDUSAGE

Electric heater packages are available in capacities
ranging from 5- through 11-kw. The factory-shipped

heater package (Fig. 2.) contains a completely assembled
and wired heater with controls and mounting screws. The
factory-shipped cooling control (Fig. 1.) contains a
completely assembled and wired control and mounting

screws.

FieldInstallation of Controls

Units shipped from factory without heaters require a
field-installed cooling control kit or heater. These kits are

completely assembled and factory-wired for easy

installation.

Electrical shock hazard.
Before installing or servicing fan coil, always turn

off all power to unit. There may be more than 1dis-
connect switch. Turn off accessory heater power

if applicable.
Field wires on side of disconnect found in fan coil

remain live, even when pull-out is removed. Ser-

vice and maintenance to incoming wiring can not

be performed until main disconnect switch (re-
mote to the unit) is turned off.

Failure to do so can result in property damage,
personal injury and/or death.

NOTE: Before proceeding with electrical connections,

make certain that voltage, frequency, and phase
correspond to that specified on rating plate and (Figure 3).
Also, check to be sure that the service provided by utility is

sufficient to handle additional load imposed by this

equipment. Refer to unit wiring label for proper field high-
and low-voltage wiring. Make all electrical connections in

accordance with NEC and any local codes or ordinances
that might apply. Unit must have a separate branch

electrical circuit. The Cooling Control Kit and the heater
packages provide a disconnect switch located within sight
and readily accessible to the unit.

INSTALLCOOLINGCONTROLPACKAGE

1. Remove blower access panel (See Fig. 1.)

2. Install cooling control panel above blower motor on
blower side plate. Attach with provided screws. (See

Fig. 1.)

3. Route thermostat leads through small knockout in top

of unit. Use grommet provided with cooling control to

protect leads where they pass through casing.

4. Make low-voltage splice connections in low-voltage

control box.

5. Route blower motor power leads up through hole in
bottom of cooling control. Connect yellow common

wire to piggyback common terminal on transformer.

Connect black (HI) or red (LOW) speed tap wire to

control board relay common terminal. See wiring

label for proper speed tap selection.

6. Route unit power supply through knockout in top of
unit and connect to line side of disconnect. Connect

ground wire to ground lug. See wiring label to make
connections.

7. Remove disconnect pullout.

8. Replace access panel.

9. Insert disconnect pullout through hole in access
panel.

INSTALLHEATERPACKAGE

1. Remove blower access panel. (See Fig. 2.)

2. Insert heater into opening, engaging element support
bars into holes in back of blower housing, and attach

with provided screws. (See Fig.2.)

3. Route blower motor power leads up through hole in
bottom of heater package. Connect yellow common

wire to piggyback common terminal on transformer.

Connect black (HI) or red (LOW) speed tap wire to

control board relay common terminal. See wiring

label for proper speed tap selection.

4. Route thermostat leads through small knockout in top

of unit. Use plastic grommet provided with heater

package to protect leads where they pass through

casing.

5. Make low-voltage splice connections in low-voltage

control box.

664 01 3004 oo
Nov. 2000

6,Routeunitpowersupplythroughknockoutintopof

unitandconnecttolinesideofdisconnect.Connect

groundwiretogroundlug.Seewiringlabeltomake
connections.

7. Remove disconnect pullout,

8. Replace access panel.

9, Insert disconnect pullout through hole in access

panel,

Figure 1 Cooling Control Kit

NOTE: Toppanel not shown forclarity

COOLING J j

CONTROL

.-/

A98333

Figure 2 Heater Package

NOTE: Top panel not shown for clarity

HEATER

PACKAGE

A98332

BLOWER

ACCESS UNIT

DOOR

ACCESS

DOOR

A98335

INDOOR

UNIT

Figure 3 J Electrical Data

PART UNIT HEATER MIN WIRE MIN MAX CIRCUIT

NO. SIZE VOLTAGE KW @ AMPS SIZE* AMPACITY PROTECTION

AMWK001CK 024 208/230 0 0.0/0.0 0/0 75 14 2,5 15/15

AMWK005AH 024 208/230 5.0 18.1/20.0 12799/15700 75 10/10 25.2/27.5 30/30

AMWK007AH 024 208/230 7.5 27.1/30.0 19215/23515 75 8/8 38.4/40.0 40/40

AMWK011AH 024 208/230 11.0 39.8/44.0 25597/31331 75 6/6 52.3/57.5 60/60

018
O3O

018

O3O
018

O3O
018

030

NOM HEATER WIRE

CAPACITY RATING

240-V (BTUH) (°c)

A98334

664 01 3004 00 2L_ J