ICP FEM4P1800A1, FEM4P1800AT1, FEM4P2400A1, FEM4P2400AT1, FEM4P3000A1 Installation Guide

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These instructions must be read and understood completely before attempting installation.

Safety Labeling and Signal Words

DANGER, WARNING, CAUTION, and NOTE

The signal words DANGER, WARNING,

CAUTION, and NOTE are used to identify levels of

hazard seriousness. The signal word DANGER is only used on product labels to signify an immediate

hazard. The signal words WARNING, CAUTION, and NOTE will be used on product labels and

throughout this manual and other manuals that may

apply to the product. DANGER - Immediate hazards which will result in

severe personal injury or death. WARNING - Hazards or unsafe practices which

could result in severe personal injury or death. CAUTION - Hazards or unsafe practices which

may result in minor personal injury or product or property damage.

NOTE - Used to highlight suggestions which will result in enhanced installation, reliability, or operation.

Signal Words in Manuals

The signal word WARNING is used throughout this

manual in the following manner:

The signal word CAUTION is used throughout this

manual in the following manner:

Signal Words on Product Labeling Signal words are used in combination with colors

and/or pictures on product labels.

TABLE OF CONTENTS

Introduction .................................... 2

Location ....................................... 2

Clearances and Dimensions ................... 3-4

Heater Packages ............................... 5

Position Unit ................................. 5-9

Air Ducts ..................................... 10

Electrical Connections ...................... 10-14

Refrigerant Tubing ............................. 15

Refrigerant Flow-Control Device ................ 15

Condensate Drains ............................ 16

Accessories .................................. 17

Sequence of Operation ......................... 18

Start-up Procedure ............................ 18

Care and Maintenance ......................... 18

Airflow Performance ........................ 19-20

R-410A Quick Reference Guide ................. 21

PERSONAL INJURY, AND/OR PROPERTY DAM- AGE HAZARD

Failure to carefully read and follow this warning could result in equipment malfunction, property damage, personal injury and/or death.

Installation or repairs made by unqualified per- sons could result in equipment malfunction, prop- erty damage, personal injury and/or death.

The information contained in this manual is in- tended for use by a qualified service technician fa-

miliar with safety procedures and equipped with the proper tools and test instruments.

Installation must conform with local building codes and with the National Electrical Code

NFPA70 current edition.

496 01 5501 01 April 2011

INTRODUCTION

Models FEM4P, FSM4P, and FSU4P are for R-410A refrigerant.

Models FEM4P and FSM4P are designed for maximum

flexibility and can be used for upflow, horizontal left or

right, and downflow applications (accessory kit required

for downflow).

Model FSU4P is designed for upflow installation, and can be field modified for downflow applications (accessory kit required).

LOCATION

Select the best position which suits the installation site conditions. The location should provide adequate structural support, space in the front of the unit for service

access, clearance for return air and supply duct connections, space for refrigerant piping connections and condensate drain line connections. If heaters are being

installed make sure adequate clearance is maintained

from supply duct work. See Clearances in Figure 1 and

Figure 2. If the unit is located in an area of high humidity, nuisance

sweating of casing may occur. On these installations a wrap of 2" (51mm) fiberglass insulation with a vapor barrier is

recommended.

FEM4P models are available for system sizes 1-1/2 - 4

tons (18,000 - 48,000 BTUH) nominal cooling capacity.

FEM4P uses a refrigerant piston metering device with an ECM integral electronically commutated motor for

efficiency. FSM4P and FSU4P models are available for system

sizes 1-1/2 - 4 tons (18,000 - 48,000 BTUH) nominal

cooling capacity. FSM4P and FSU4P use a refrigerant piston metering device with 2-speed PSC (permanent

split capacitor) motors. All models require a field supplied air filter. Factory

approved electric heater packages are available in sizes 5kW through 30kW. See Product Specification literature for available accessory kits

NOTE: Internal filter can be accessed from separate filter

door. If the filter can NOT be easily accessed, a remote filter is recommended. Refer to ACCA Manual D for

remote filter sizing.

FIRE HAZARD Failure to maintain proper clearances could result in

personal injury, death, and/or property damage. When heaters are installed, maintain clearances from

combustible materials as specified on unit rating plate. Do not use plastic lined or combustible flexible

ducting within 36 inches of the supply end of the fan coil.

2 496 01 5501 01

Figure1 [

ClearancesandUnitDimensions- FEM4P

(OPENING)

_" GJ(SERVICE ACCESS)

i ("(_OPENING)_G_.

38-11-82

! !!

No All Sides 0

Heaters From Supply Duct 0

With

Heaters

All Sides 0

From First 3 feet of Supply Duct to Combustibles 1 (25) From Supply Duct to Combustibles after 3 feet 0

M !!!!!

Unit Size A B C D E F G H

1800 42-11/16 14-5/16 12-7/16 12-5/8 22-1/16 11 21 19-13/16 2400 42-11/16 14-5/16 12-7/16 12-5/8 22-1/16 11 21 19-13/16 3000 49-5/8 17-5/8 15-3/4 15-5/8 22-1/16 11 21 19-13/16 3600 49-5/8 17-5/8 15-3/4 15-5/8 22-1/16 11 21 19-13/16 4200 49-5/8 21-1/8 19-1/4 19-1/8 22-1/16 11 21 19-13/16 4800 49-5/8 21-1/8 19-1/4 19-1/8 22-1/16 11 21 19-13/16

Unit Size A B C D E F G H

1800 1084 364 316 313 560 279 533 503 2400 1084 364 316 313 560 279 533 503 3000 1261 448 400 397 560 279 533 503 3600 1261 448 400 397 560 279 533 503 4200 1261 537 489 486 560 279 533 503 4800 1261 537 489 486 560 279 533 503

496 01 5501 01 3

Figure

2 J ClearancesandUnitDimensions- FSM4P,FSU4P

OPENING)

_" GJ-__SERVICE ACCESS)

38-11-82

!!!!!!!!!!!!!_!_!_!!!!!i!!_!!_!!_!!_!!_!!_!!_!!_!!_!!_!!_!!_!!_!!_!!_!!_!!_!!_!!_!!_!_!_!_!_!:_!b!!!_!_@N!_!_!!!!!_!!_!!_!_!!!__!_!i_!!!!!i!!!_!!

No All Sides 0

Heaters From Supply Duct 0

With

Heaters

All Sides 0

From First 3 feet of Supply Duct to Combustibles 1 (25) From Supply Duct to Combustibles after 3 feet 0

_ _!_!_! _ !!_!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Unit Size A B C D E F G H

1800 47-5/8 17-5/8 15-3/4 15-5/8 22-1/16 11 21 19-13/16

2400 49-5/8 17-5/8 15-3/4 15-5/8 22-1/16 11 21 19-13/16 3000 53-7/16 21-1/8 19-1/4 19-1/8 22-1/16 11 21 19-13/16 3600 53-7/16 21-1/8 19-1/4 19-1/8 22-1/16 11 21 19-13/16 4200 49-5/8 21-1/8 19-1/4 19-1/8 22-1/16 11 21 19-13/16 4800 53-7/16 24-11/16 22-3/4 22-11/16 22-1/16 11 24 19-13/16

!!!!!!!!!!!_!_!i!!!!i!_ __i!:!!!_!i_!_!!!!!!!!!!_!!!!!!_i_ !!!!i!!!!i!!!!i!!

Unit Size A B C D E F G H

1800 1210 448 400 397 560 279 533 503 2400 1261 448 400 397 560 279 533 503 3000 1357 537 489 486 560 279 533 503 3600 1357 537 489 486 560 279 533 503 4200 1261 537 489 486 560 279 533 503 4800 1357 627 578 576 560 279 610 503

4 496 01 5501 01

HEATER PACKAG ES

Factory approved, field installed, UL listed heater packages are available from the equipment supplier. See unit rating plate for a list of factory approved heaters.

POSITION UNIT

Unit can stand or lie on floor, or hang from ceiling or wall. Allow space for wiring, piping, and servicing unit.

PROPERTY DAMAGE HAZARD Failure to follow this caution may result in proper-

ty damage A field fabricated auxiliary drain pan, with a sepa-

rate drain is REQUIRED for all installations over a

finished living space or in any area that may be damaged by overflow from a restricted main drain

pan. In some localities, local codes require an aux- iliary drain pan for ANY horizontal installation.

Figure 3 [

POWER

OPTIONS

FRONT SERVICE CLEARANCE

18 - 48 models = 21" (533 mm)

60 model = 24" (610 mm)

UPFLOW/_

Heaters that are not factory approved could cause damage which would not be covered under the equipment warranty.

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 inch thick (3 to 6 mm

thick) fireproof resilient gasket between duct, unit, and floor.

Side return is a field option on slope coil models. Cut opening per dimensions shown in Figure 3. A

field-supplied bottom closure is required.

Upflow Installation

S SUPPLY DUCT

LOW VO LT

tl ENTRY

OPTIONS FIELD SUPPLIED

11/2"

SLOPE COIL UNITS

MODEL SIZE A

18 12" (305mm) 24 12" (305mm)

30 17" (432mm) 36 17" (432mm)

)

SECONDARY DRAIN

/4 -

( 483mm)

II _ SIDE RETURN

2W'

IlL _4mm) [ UNITS ONLY

FIELD MODIFIED LOCATION FOR

SLOPE COIL

PRIMARY DRAIN

FIELD SUPPLIED RETURN PLENUM

496 01 5501 01 5

B.DOWNFLOWINSTALLATION

PRODUCT OR PROPERTY DAMAGE HAZARD Failure to follow this caution may result in product

or property damage The conversion of the fan coil to downflow re-

quires special procedures for the condensate drains on both A-coil and Slope-coil units. The vertical drains have an overflow hole between the

primary and secondary drain holes. This hole is plugged for all applications except downflow, and

must be used for downflow. Failure to follow instructions could result in per-

sonal injury or product and property damage.

In this application, field conversion of the evaporator coil is required using accessory Downflow Kit along with an

accessory Base Kit. Set unit on floor over opening and use 1/8" to 1/4" thick fireproof resilient gasket between

duct, unit, and floor. Refer to installation instructions packaged with accessory kit. See Product Specification literature for kit part numbers.

During the conversion process, removed the plastic cap covering the vertical drains only and discard.

Remove the plug from the overflow hole and discard.

At completion of the downflow installation, caulk around the vertical pan fitting to door joint to retain low air leak

performance of the unit. NOTE: Gasket kit number (EBACO1GSK) is also

required for all downflow applications to maintain low air leak/low sweat performance.

C. HORIZONTAL INSTALLATION

Unit must NOT be installed with access panels facing up or down. Access panels must only face to the side.

FEM4P and FSM4P models are factory built for horizontal left installation (refer to Figure 4 and Figure 5).

They can be field converted to horizontal right (accessory

Gasket Kit required, see Product Specification literature

for part number). Refer to Figure 6 and Figure 7.

NOTE: When suspending unit from ceiling, dimples in casing indicate suitable location of screws for mounting metal support straps (refer to Figure 4).

NOTE: For optimum condensate drainage performance in horizontal installations, unit should be leveled along its

length and width.

Figure 4 J Slope Coil In Horizontal Left Application (FEM4P & FSM4P factory configuration)

A-COIL

HORIZONTAL LEFT

FIELD SUPPLIED

LOW VOLT

ENTRY OPTIONS

HANGING STRAPS

SECONDARY DRAIN

SECONDARY PRIMARY DRAIN DRAIN

FRONT SERVICE CLEARANCE (FULL FACE OF UNIT)

18 - 48 models = 21" (533mm)

60 model = 24" (610mm)

1¾"(45mm) FILTER ACCESS

CLEARANCE

POWER ENTRY

OPTIONS

PRIMARY

DRAIN

6 496 01 5501 01

Figure5 [ A-Coil in HorizontalLeftApplication(FEM4P& FSM4Pfactoryconfiguration)

FACTORY SHIPPED

HORIZONTAL LEFT

APPLICATION

HORIZONTAL.

DRAIN PAN

AIR SEAL

Horizontal Right Conversion of Units With Slope Coils 5.

Remove blower and coil access panel and fitting panel (refer to Figure 6).

Remove coil mounting screw securing coil assembly to right side casing flange.

Remove coil assembly.

Lay fan coil unit on its right side and reinstall coil assembly with condensate pan down (refertoFigure 6).

-- BRACKET

BRACKET

HORIZONTAL LEFT

REFRIGERANT

CONNECTIONS

COIL

SUPPORT

RAI L

DRAIN PAN

SUPPORT

BRACKET

COIL

PRIMARY DRAIN

SECONDARY DRAIN

HORIZONTALLEFT

Attach coil to casing flange using coil mounting screw previously removed.

Align holes with tubing connections and

condensate pan connections, and reinstall access panels and fitting panel. After brazing, make sure

liquid and suction tube grommets are in place to prevent air leaks and cabinet sweating.

Figure 6 [ Conversion for Horizontal Right Applications - Slope Coil

COIL MOUNTING

COIL SUPPORT RAIL

SLOPE

:{EFRIGERANT

CONNECTIONS

SECONDARY DRAIN

496 01 5501 01 7

BLOWER

ASSEMBLY

DRAIN

Horizontal Right Conversion of Units With A-Coils

1. Remove blower and coil access panel and fitting panel (refer to Figure 7).

2. Remove coil mounting screw securing coil assembly to right side casing flange.

3. Remove coil assembly.

4. Lay fan coil unit on its right side and reinstall coil assembly with condensate pan down (refer to Figure 7).

5. Remove horizontal drain pan support bracket from coil support rail on left side of unit and reinstall on

coil support rail on right side of unit.

6. Convert air-seal assembly for horizontal right (refer to Figure 7).

a. Remove air-seal assembly from coil by removing

4 screws.

b. Remove coil drip flanges from A-coil and reinstall

on right side of coil (same side as horizontal drain pan).

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.

7. Install horizontal pan on right side of coil assembly.

8. Slide coil assembly into casing. Be sure coil bracket on each corner of vertical pan engages coil

support rails.

9. Reinstall 2 snap-in clips to correctly position and

secure coil assembly in unit. Be sure clip with large offsets is used on right side of unit to secure

horizontal pan.

10. Remove 2 oval coil access panel plugs and reinstall into holes on left side of coil access panel

and fitting panel.

11. Remove insulation knockouts on right side of coil

access panel

12. Reinstall access fitting panels, aligning holes with

tubing connections and condensate pan connections. Be sure to reinstall metal clip

between fitting panel and vertical condensate pan.

13. After brazing, make sure liquid and suction tube

grommets are in place to prevent air leaks and cabinet sweating.

Figure 7 J Conversion for Horizontal Right Applications - A-Coil

SEAL

SUPPORT

RAI L

BRACKET

DRAIN

SUPPORT

BRACKET

COIL_

SUPPORT

RAIL

BRACKET

HORIZONTAL

DRAIN PAN

PRIAMRY

HORIZONTAL RIGHT

SECONDARY DRAIN HORIZONTAL RIGHT

CONNECTIONS ASSEMBLY

HORIZONTAL RIGHT APPLICATION

8 496 01 5501 01

D. MANUFACTUREDHOUSINGANDMOBILEHOME

APPLICATIONS

Fan coil unit must be secured to the structure using field-supplied hardware.

Allow a minimum of 24 inches (610mm) clearance from access panels.

Recommended method of securing for typical applications:

a. If fan coil is away from wall, attach pipe strap to

top of fan coil using No. 10 self tapping screws. Angle strap down and away from back of fan coil,

remove all slack, and fasten to wall stud of structure using 5/16" lag screws. Typical both

sides of fan coil.

If fan ooil is against wall, secure fan coil to wall stud using 1/8" (3mm) wide right-angle brackets.

Attach brackets to fan coil using No. 10 self tapping screws and to wall stud using 5/16" lag

screws (refer to Figure 8).

Figure 8

---...._..

Mobile Home or Manufactured

Housing Applications

4" (102mm) MAX

-_ SECURE FAN COILTO STRUCTURE

I UNIT AWAY FROM WALL

PIPE STRAP

i_ (TYPICAL BOTH SIDES)

_ OR

UNIT AGAINST WALL

1/8" (3mm) INCH THICK ANGLE

MOUNTING BRACKET

(TYPICAL BOTH SIDES)

4/_7 DOWN FLOW

BASE KIT

/ _ SECURE UNIT TO FLOOR _/ ANGLE BRACKET OR PIPE STRAP

4" (102ram) MAX

NOTE: Modular units can be disassembled and

components moved separately to installation area for reassembly. This process

accommodates small scuttle holes and limiting entrances to installation sites (refer to Figure 9).

Figure 9

BRACKET

Removal of Brackets on

Modular Units

BLOWER BOX

, , SO EWS

2 SCREWS

COIL BOX

496 01 5501 01 9

AIR DUCTS

Connect supply-air duct over the outside of 3/4"flanges provided on supply-air opening. Secure duct to flange using proper fasteners for type of duct used, and seal

duct-to-unit joint. Use flexible connectors between duct work and unit to

prevent transmission of vibration. When electric heater is installed, use heat-resistant material for flexible

connector between duct work and unit at discharge connection. Duct work passing through unconditioned

space must be insulated and covered with vapor barrier.

ELECTRICAL CONNECTIONS

FSM4P and FSU4P Fan Coil models utilize a printed circuit board (PCB) which has a low voltage circuit protective fuse (5 amp), fan motor speed tap terminal

(SPT), and time-delay relay (TDR). To disable the TDR

feature, snip the jumper wire JWl (refer to Figure 10).

FEM4P Fan Coil models do not have a printed circuit board (PCB), they have a low voltage circuit protective fuse (3

amp) inline on the wire harness. Speed selections are made at the fan motor with the Blue wire. The motor is

preprogrammed with the time-delay circuit on some of the speed taps. (See Section D)

Before proceeding with electrical connections, make certain that supply voltage, frequency, phase, and circuit ampacity

are as specified on the unit ratingplate. See unit wiring label

for proper field high and low voltage wiring.

ELECTRICAL SHOCK or UNIT DAMAGE HAZARD

Failure to follow this warning could result in per- sonal injury, death, and/or unit damage.

If a disconnect switch is to be mounted on unit, se- lect a location where drill and fasteners will not

contact electrical or refrigeration components.

Duct work Acoustical Treatment

Metal duct systems that do not have a 90 degree elbow and 10 feet of main duct before first branch takeoff may

require internal acoustical insulation lining. As an alternative, fibrous duct work may be used if constructed

and installed in accordance with the latest edition of SMACNA construction standard on fibrous glass ducts.

Both acoustical lining and fibrous duct work shall comply

with National Fire Protection Association as tested by UL

Standard 181 for Class 1 air ducts.

Make all electrical connections in accordance with the NEC and any local codes or ordinances that may apply.

Use copper wire only. The unit must have a separate branch electric circuit with a field-supplied disconnect

switch located within sight from and readily accessible from the unit.

NOTE: When a pull-out type disconnect is removed from the unit, only the Load side of the circuit is de-energized. The Line side remains live until the main (remote)

disconnect is turned off.

ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in per-

sonal injury or death.

Turn off the main (remote) disconnect device be-

fore working on incoming (field) wiring. Incoming (field) wires on the line side of the dis- connect found in the fan coil unit remain live, even

when the pull-out is removed. Service and main-

tenance to incoming (field) wiring cannot be per-

formed until the main disconnect switch (remote

to the unit) is turned off.

Figure 10 J Fan Coil Printed Circuit Board

FSM4P, FSU4P

10 496 01 5501 01

A. LINE VOLTAGE CONNECTIONS Fan Coils installed without electric heat require the use of

a factory-authorized Power Plug Kit (accessory part number EBAC01PLG). This kit provides the electrical connections necessary to supply the unit with 208/230V

power when electric heat is not present. For units without electric heat:

1. Connect 208/230V power leads from field disconnect to yellow and black stripped leads on

Power Plug (accessory part number EBAC01 PLG).

2. Connect ground wire to unit ground lug.

3. When installing an electric heater, remove and discard power plug (if equipped) from fan coil and

connect male plug from heater to female plug from unit wiring harness. (See Electric Heater

Installation Instructions.)

B. 24V CONTROL SYSTEM Connection to Unit

Wire low voltage in accordance with wiring label on the

blower (also refer to Figure 11 through Figure 16). Use 18

AWG color-coded, insulated (35 °C minimum) wire to

make the low-voltage connections between the

thermostat, the unit, and the outdoor equipment. If the thermostat is located more than 100 feet from the unit (as

measured along the low voltage wire), use 16 AWG color-coded, insulated (35 °C minimum) wire. All wiring

must be NEC Class 1 and must be separated from incoming power leads. Refer to outdoor unit wiring instructions for additional wiring recommendations.

Heater Staging

The controls are factory circuited for single-stage

operation (refer to Figure 12). When 2 stages are desired, cut W3 at the W2 wire nut, strip, and reconnect according to the thermostat kit instruction (refer to

Figure 14 - outdoor thermostat optional). When 3 stages are desired, cut the W2 wire nut off and discard. Strip W2,

W3, and E, and reconnect according to the thermostat kit

instructions (refer to Figure 15 outdoor thermostats optional).

UNIT OPERATION HAZARD Failure to follow this caution may result in

improper product operation. If W2, W3, and E on any 3 stage heater (18, 20, 24,

or 30kW) are individually connected - as with outdoor thermostats or any other situation - emergency heat relay must be used. If relay is not used, blower may not operate when heaters are

energized.

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°F (4°C), except for a

heat pump defrost cycle. Refer to Figure 16 for typical low

voltage wiring with outdoor thermostat.

496 01 5501 01 11

Figure11

THERMOSTAT (CONTROL)

WiringLayout- Air Conditioning

Unit(CoolingOnly)

FAN COIL

_ RED R

/ BLA_w 3

/_o E

AIR COND.

..........................C

Figure 12 Unit (Cooling and 1-Stage Heat)

Wiring Layout - Air Conditioning

Figure 14

THERMOSTAT

E_ E_

[] []

[]---

Wiring Layout - Heat Pump Unit

(Cooling and 2-Stage Heat with

One Outdoor Thermostat)

FAN COIL

(CONTROL)

HEAT PUMP

(CONTROL)

g_'-R

W3 ODTS

g:l g:l

g_._¥

THERMOSTAT (CONTROL)

FAN COIL

E__ G

WHT/_w3

AIR COND.

Wiring Layout - Heat Pump Unit

Figure 13 (Cooling and 2-Stage Heat with

No Outdoor Thermostat)

THERMOSTAT (CONTROL)

FAN COIL

[__R

E__ G

[:__c

/ BkAL_w3

[] L_£E

[]

HEAT PUMP (CONTROL)

p--

25__iR

Z_ic

Wiring Layout - Heat Pump Unit

Figure 15 (Cooling and 2-Stage Heat with

Two Outdoor Thermostats)

THERMOSTAT (CONTROL)

FAN COIL

[_---_ R

_S:_ARZ G

[]-

Z_R

HEAT PUMP

(CONTROL)

--_ C _::1_w_

[]

_W3 BLU

ODTS1

E_ []

[]

EMERGENCY HEAT RELAY

Wiring Layout - Heat Pump Unit

Figure 16 (Cooling and 2-Stage Heat for

Manufactured Housing)

[39-_

Za_iy

THERMOSTAT FAN COIL HEAT PUMP

[] []

[]

(CONTROL) (CONTROL)

..............................................................................................................._ R

_-- G

....................................C C

I_-- []

[] gX_

D-

12 496 01 5501 01

TransformerInformation

Transformer is factory wiredfor 230V operation. For 208V applications, disconnect the black wire from the 230V

terminal on transformer and connect it to the 208V terminal

refer to Figure 17).

Figure 17 [ Transformer Connections

BROWN

RED

YELLOW

BLACK

C. GROUND CONNECTIONS

ELECTRICAL SHOCK HAZARD Failure to establish uninterrupted or unbroken

ground could result in personal injury and/or death.

According to NEC, ANSI/NFPA 70, and local codes, the cabinet must have an uninterrupted or

unbroken ground in order to minimize potential

for personal injury or death if an electrical fault should occur. The ground may consist of electri-

cal wire or metal conduit when installed in accor- dance with existing electrical codes. If conduit

connection uses reducing washers, a separate ground wire must be used.

FEM4P models: fan speed is selected at the motor

connector. Units with or without electric heaters require a minimum CFM. Refer to the unit wiring label to ensure

that the fan speed selected is not lower than the minimum fan speed indicated.

Tap 1 Low 90 sec off delay Tap 2 Medium 90 sec off delay

Tap 3 High 90 sec off delay Tap 4 Electric Heat 1- 0 sec off delay

Tap 5 Max $ 0 sec off delay

1-Electric heat airflow is same CFM as Tap 3, but with 0

sec off delay. For high static applications, see Airflow Performance

Tables for max airflow.

To change motor speeds disconnect the BLUE fan lead from motor connector terminal #2 (factory default

position) and move to desired speed-tap; 1,2, 3, or 5. Speed-taps 1,2, and 3 have a 90 second blower off time

delay pre-programmed into the motor. Speed tap 4 is used for electric heat only (with 0 second blower time

delay) and the WHITE wire should remain on tap 4. Speed-tap 5 is used for high static applications, but has a 0 second blower time delay pre-programmed into the motor (see Airflow Performance Tables for actual CFM for

each tap). Also, see Figure 18 for motor speed selection location.

NOTE: In low static applications, lower motor speed tap

should be used to reduce possibility of water being blown off

coil.

NOTE: Use UL listed conduit and conduit connectors for connecting supply wire(s) to unit to obtain proper grounding.

Grounding may also be accomplished by using grounding lugs provided in control box. D. MINIMUM CFM AND MOTOR SPEED SELECTION

Units with or without electric heaters require a minimum CFM. Refer to the unit wiring label to ensure that the fan

speed selected is not lower than the minimum fan speed indicated.

FSM4P and FSU4P models: fan speed selection is done at the fan relay printed circuit board. To change motor speeds, disconnect fan lead used on relay terminal (SPT) and replace with motor speed lead desired (refer to Figure 19). Save insulating cap and place on motor lead removed from relay.

NOTE: In low static applications, lower motor speed tap should be used to reduce possibility of water being blown off

coil. Units have 2 motor speed taps. Low speed (red) and high

speed (black). See Table 2 - FSM4P, FSU4P Airflow Performance (CFM) for each setting.

496 01 5501 01 13

Figure18 J FEM4PMotorSpeedSelection

/ 1 2345

Figure 19

FSM4P & FSU4P Fan Coil Relay

and Speed Tap Terminal

(_ (:C) O

co c)

OO O

o o

L11S018

,wo_S_E_0 T_,_,

COMMON YELLOW

/ J_'_--FAN DECK

SPEED TAP _

14 496 01 5501 01

REFRIGERANT TUBING

Refrigerant Tubing Connection and Evacuation

Use accessory tubing package or field-supplied tubing of refrigerant grade. Suction tube must be insulated. Do not

use damaged, dirty, or contaminated tubing because it may plug refrigerant flow-control device. ALWAYS

evacuate the coil and field-supplied tubing to 500 microns before opening outdoor unit service

valves.

PRODUCT DAMAGE HAZARD

Failure to follow this caution may result in product or property damage.

A brazing shield MUST be used when tubing sets are

being brazed to the unit connections to prevent damage

to the unit surface and condensate pan fitting caps.

REFRIGERANT FLOW-CONTROL DEVICE

FEM4P, FSM4P, and FSU4P Models:

These units come equipped with a factory installed Piston metering device with Teflon ring. Ifa piston replacement 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. The

piston shipped with outdoor unit is correct for any approved indoor coil combination (See Figure 20).

When changing piston, use a back-up wrench. Hand tighten hex nut, then tighten with wrench 1/2 turn. Do not

exceed 30 ft-lbs.The indoor piston contains a Teflon ring (or seal) which is used to seat against the inside of

distributor body, and must be installed properly to ensure proper seating in the direction for cooling operation.

Units have sweat suction and liquid tube connections. Make suction tube connection first.

1. Cut tubing to correct length.

2. Insert tube into sweat connection on unit until it bottoms.

3. Braze connection using silver bearing or non-silver bearing brazing materials. Do not use solder

(materials which melt below 800°F / 427°C). Consult local code requirements.

4. Evacuate coil and tubing system to 500 microns using deep vacuum method.

PRODUCT DAMAGE HAZARD

Failure to follow this caution may result in product or

property damage. Wrap a wet cloth around rear of fitting to prevent

damage to piston assembly or TXV and factory-made

joints.

Figure

BRASS'='_ _ DiSTRiBUTOR

HEX NUT\ TEFLON SEAL \

ill I °OOLIN \

IJ_l_ _-- BRASS

20 ] Refrigerant Flow-Control Device

\ _ TEFLONRING \

PIESTAONER HEX BODY

PRODUCT OPERATION HAZARD Failure to follow this caution may result in improper product

operation.

Ifusing a TXV in conjunction with a single-phase reciprocat- ing compressor, a compressor start capacitor and relay are required. Consult outdoor unit pre-sate literature for start as-

sist kit part number.

f STRAINER

496 01 5501 01 15

CONDENSATE DRAINS

Unit is provided with primary and secondary 3/4" (19mm) NPT drain connections. Refer to Figure 3, Figure 4, Figure 5, Figure 6, and Figure 7 to identify the primary

and secondary locations. To prevent property damage and achieve optimum drainage performance, BOTH

primary and secondary drain lines should be installed and include properly sized condensate traps (refer to

Figure21). Factory approved condensate traps are available (accessory part number EBAC01CTK).

To connect drainlines, the drain connection knock-outs

must be removed. Use a knife to start the opening near the tab and using pliers, pull the tab to remove the

knock-out. Clean the edge of the opening if necessary.

After drain fittings are installed, caulk the seam between

the fitting and the cover to retain the low leak rating of the unit.

It is recommended the PVC fittings be used on the plastic condensate pan. Do not over-tighten. Finger-tighten

plus 1-1/2 turns. Use pipe dope, to ensure proper seal. Install traps in the condensate lines as close to the coil as

possible (refer to Figure 23), but avoid blocking filter access panel.

Install drain lines below the bottom of the drain pan and pitch the drain lines down from the coil at least 1/4 inch per

foot of run (6mm per 0.3m). Horizontal runs over 15 feet

(5m) long must also have an anti-siphon air vents (stand pipes), installed ahead of the horizontal runs. Extremely

long horizontal runs may require oversized drain lines to eliminate air trapping.

Route primary drain line to the outside or to a floor drain. Check local codes before connecting to a waste (sewer)

line. Route the secondary drain line to a place in compliance

with local installation codes where it will be noticed when unit is operational. Condensate flowing from secondary

(overflow) drain indicates a plugged primary drain - unit requires service or water damage will occur.

Prime all traps, test for leaks, and insulate drain lines where sweating could cause water damage. Consult local

codes for additional requirements or precautions. If a gravity drain cannot be used, install a condensate pump.

Install the pump as close to the indoor section as possible.

Figure 21 I Recommended Condensate Trap

2 MIN (51mm)

Figure 22 1 Insufficient Condensate Trap

DO NOT USE SHALLOW RUNNING TRAPS!

Figure 23 1 Condensate Drain

! o

¢q

o o o s

PRODUCT or PROPERTY DAMAGE HAZARD Failure to follow this caution may result in product

or property damage. Use only full size P-traps in the condensate line

(refer to Figure 21). Shallow, running traps are in- adequate and DO NOT allow proper condensate

drainage (refer to Figure 22).

16 496 01 5501 01

PRIMARY TRAP REQUIRED (USE FACTORY KIT OR FIELD-SUPPLIED TRAP OF PROPER DEPTH. STANDARD P-TRAPS ARE NOT SUFFICIENT. SEE

FIGURE OF RECOMMENDED CONDENSATE TRAP)

(USE FACTORY KIT OR

_x,xFI ELD-SU PPLI ED TRAP)

UIRED

ACCESSORIES

A. ELECTRONIC AIR CLEANER

The Electronic Air Cleaner may be connected to fan coils as shown in Figure 24. This method requires a field

supplied transformer. See Electronic Air Cleaner literature for kit requirements.

Wiring Layout of Electronic Air

Figure 24 Cleaner to Fan Coil (FSM & FSU)

CONTROL BOARD

R G T C C C

I FAN RELAY

SPT NO NC

Figure

THERMOSTAT

ED- D-

D- D

Fq D

25 | Wiring Layout of Humidifier to

Heat Pump

FAN COIL

(CONTROL)

W2 W3

HEAT PUMP

(CONTROL)

208/230V COM

CONVERSION KIT

TRANSFORMER

TO BLOWER

MOTOR

208/230V

TO EAC

FROM MOLEX

PLUG AND

TRANSFORMER

(IN UNIT)

B. HUMIDIFIER

Connect humidifier and humidistat to fan coil unit as shown in Figure 25 and Figure 26.

FANH-"_ _

Figure 26

THERMOSTAT

_ _i_, RED R

12b

D L

I ,_____, I I

I I

I.....

Wiring Layout of Humidifier to

Fan Coil with Electric Heat

FAN COIL

(CONTROL)

/ _L_w_

II /_ vlo E

I -- c

I _:{N

I ,

I I

___ _

HUMIDISTAT

AIR COND.

Ca._c

115V

-----0

496 01 5501 01 17

SEQUENCE OF OPERATIONS

A. CONTINUOUS FAN

Thermostat closes R to G. G energizes fan relay on PCB

(FSM4P, FSU4P) or sends signal direct to motor (FEM4P), which completes circuit to indoor blower motor. When G is

de-energized, there is a 90 second off delay before relay opens.

B. COOLING MODE

Thermostat energizes Rto G, Rto Y,and R to O (heat pump

only). G energizes fan relay on PCB (FSM4P, FSU4P) or sends signal direct to motor (FEM4P), which completes

circuit to indoor blower motor. When G is de-energized, there is a 90 second offdelay before fan relay opens.

C. HEAT PUMP HEATING MODE

Thermostat energizes R to G and R to Y. G energizes fan

relay on PCB (FSM4P, FSU4P) or sends signal direct to motor (FEM4P), which completes circuit to indoor blower

START-UP PROCEDURE

Refer to outdoor unit Installation Instructions for system start-up instructions and refrigerant charging method

details.

CARE AND MAINTENANCE

motor. When G is de-energized, there is a 90 second off delay before fan relay opens.

D. HEAT PUMP HEATING WITH AUXILIARY

ELECTRIC HEAT

Thermostat energizes R to G, R to Y, and R to W. G

energizes fan relay on PCB which completes circuit to indoor blower motor. W energizes electric heat relay(s)

which completes circuit to heater element(s). When W is

de-energized, electric heat relay(s) open, turning off heater elements. When G is de-energized there is a 90

second off delay before fan relay opens.

E. ELECTRIC HEAT OR EMERGENCY HEAT MODE

Thermostat closes R to W. W energizes electric heat

relay(s) which completes circuit to heater element(s). Blower motor is energized through normally closed

contacts on fan relay. When W is de-energized, electric heat relay(s) opens.

The system should be regularly inspected by a qualified

service technician. Consult the servicing dealer for recommended frequency.

Between visits, the only consumer service recommended or required is air filter maintenance and condensate drain operation.

Air Filter

Inspect air filters at least monthly and replace or clean as required. Disposable type filters should be replaced. Reusable type filters may be cleaned by soaking in mild

detergent and rinsing with cold water. Install filters with the arrows on the side pointing in the direction of air flow.

Condensate Drain

During the cooling season check at least monthly for free

flow of drainage and clean if necessary.

PRODUCT DAMAGE HAZARD Failure to follow this caution may result in poor

unit performance and/or product damage. Never operate unit without a filter. Factory autho-

rized filter kits must be used when locating the fil-

ter inside the unit. For those applications where

access to an internal filter is impractical, a field- supplied filter must be installed in the return duct system.

18 496 01 5501 01

AIRFLOW PERFORMANCE TABLES

Table 1 - FEM4P Airflow Performance (CFM)

MODEL & SIZE

FEM4P1800

FEM4P2400

FEM4P3000

FEM4P3600

FEM4P4200

FEM4P4800

BLOWER SPEED

Tap 5 669 620 565 Tap 4 614 569 534 486 436 398

Tap 3 660 616 581 537 499 Tap 2 614 569 534 486 436 398

Tap 1 614 569 534 486 436 398 Tap 5 892 835 763 676

Tap 4 826 795 766 743 706 660 Tap 3 826 795 766 743 706 660

Tap 2 701 660 616 581 537 499 Tap 1 617 592 552 507 472 420 Tap 5 1108 1090 1065 1034 1009 974

Tap 4 1026 1000 969 938 899 865 Tap 3 1026 1000 969 938 899 865

Tap 2 909 873 842 799 762 724 Tap 1 825 795 757 722 674 634

Tap 5 1301 1276 1245 1218 1176 1121 Tap 4 1227 1191 1169 1143 1105 1074

Tap 3 1227 1191 1169 1143 1105 1074 Tap 2 1087 1062 1030 1001 966 930 Tap 1 1026 1000 969 938 899 865

Tap 5 1560 1544 1507 1464 1424 1358 Tap 4 1419 1397 1358 1320 1279 1239

Tap 3 1419 1397 1358 1320 1279 1239 Tap 2 1249 1220 1184 1142 1093 1052

Tap 1 1242 1205 1158 1110 1069 1026 Tap 5 1743 1712 1679 1642 1610 1574 Tap 4 1669 1634 1599 1564 1531 1499

Tap 3 1669 1634 1599 1564 1531 1499 Tap 2 1452 1413 1377 1339 1308 1271

Tap 1 1300 1256 1221 1182 1142 1101

0.10 0.20 0.30 0.40 0.50 0.60

TOTAL STATIC (inches water column)

Table 2 - FSM4P and FSU4P Airflow Performance (CFM)

MODEL &

SIZE

FSM4P1800 High 642 568 648 466 FSU4P1800 Low 541 608 480 564 417 511 357 431 299

FSM4P2400 High _,111_ _03_ 888 774 791 573

BLOWER

SPEED

0.10 0.20 0.30 0.40 0.50 0.60

208V 230V 208V 230V 230V 208V 230V

FSU4P2400Low 874 781 868684740506

FSM4P3000 High 1071 1132 952 1005 704 FSU4P3000 Low 965 1117 949 1074 916 1019 805 902 575

FSM4P3600 High 1306 1264 1207 1338 1135 1241 1043 FSU4P3600 Low 1164 1335 1144 1290 1108 1226 1052 1148 970

FSM4P4200 High 1544 1576 1435 1465 1309 FSU4P4200 Low 1387 1543 1358 1488 1311 1410 1237 1315 1137

FSM4P4800 High 1803 1706 1767 1593 1648 1472 FSU4P4800 Low 1671 1777 1630 1711 1563 1630 1479 1528 1370

- Airflow outside 450 cfm/ton.

NOTES:

1. Airflow based upon dry coil at 230v with factory-approved filter and electric heater (2 element heater sizes 1800 through 3600, 3 element heater sizes 4200 through 4800). For FEM4P models, airflow at 208 volts is approximately the same as 230 volts

because the ECM motor is a constant torque motor. The torque doesn't drop off at the speeds the motor operates.

2. To avoid potential for condensate blowing out of drain pan prior to making drain trap: Return static pressure must be less than 0.40 in. wc.

Horizontal applications of 4200 - 4800 sizes must have supply static greater than 0.20 in. wc.

3. Airflow above 400 cfm/ton on 4800 size could result in condensate blowing off coil or splashing out of drain pan.

TOTAL STATIC (inches water column)

208V 230V 208V 230V 208V

526 403 434 363 iilli:i_/aii!ilill304

654 341 438 573 341 418

791 459 482 637 396 447

1127 842 937 1048 697 855

1340 1144 1182 1200 997 1047

1512 1303 1371 1412 1218 1266

496 01 5501 01 19

Table3- FEM4PAir DeliveryPerformanceCorrectionComponentPressureDrop(in.wc)atIndicated

Airflow(DrytoWetCoil)

UNIT SIZE CFM

18 0.034 0.049 0.063 ........................

24 0.034 0.049 0.063 0.076 0.089 ....................

30 .... 0.049 0.059 0.070 0.080 ................

36 ........ 0.070 0.080 0.090 0.099 ............

42 ............ 0.049 0.056 0.063 0.070 ........

48 ................ 0.063 0.070 0.076 0.083 0.090 --

Table 4 - FSM4P and FSU4P Air Delivery Performance Correction Component Pressure Drop (in. wc) at

UNIT SIZE CFM

18 0.016 0.027 0.038 ........................

24 0.016 0.027 0.038 0.049 0.059 ....................

30 .... 0.036 0.046 0.055 0.064 ................

36 ........ 0.055 0.064 0.073 0.081 ............

42 ............ 0.049 0.056 0.063 0.070 ........

48 ................ 0.038 0.043 0.049 0.054 0.059 --

UNIT SIZE

18,24 30,36 42,48

500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900

Indicated Airflow (Dry to Wet Coil)

500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900

Table 5 - FEM4P Electric Heater Static Pressure Drop (in. wc)

CFM

400 600 800 1000 1200 1400 1600 1800 2000

0.020 0.044 0.075 ............

.... 0.048 0.072 O.1 O0 ........

...... 0.070 0.092 0.120 0.152 --

2000

Table 6 - FSM4P and FSU4P Electric Heater Static Pressure Drop (in. wc)

UNIT SIZE

18,24

30,36,42

400 600 800 1000 1200 1400 1600 1800 2000

0.020 0.044 0.075 0.110 0.1 O0 ........

.... 0.048 0.072 O.1O0 O.130 O.120 ....

........ 0.092 0.120 0.152 0.187

CFM

Table 7 - Electric Heater Static Pressure Drop (in. wc)

FEM4R FSM4P, and FSU4P 1800 - 3600 FEM4R FSM4P, and FSU4P

HEATER EXTERNAL STATIC HEATER EXTERNAL STATIC

ELEMENTS CORRECTION ELEMENTS CORRECTION

0 0 + .02 0 0 + .04

1 3, 5 +.01 2 8, 10 +.02 2 8, 10 0 3 9, 15 0 3 9, 15 -.02 4 20 -.02 4 20 -.04 6 18, 24, 30 -.10

kW PRESSURE kW PRESSURE

4200 - 6000

20 496 01 5501 01

R-410A QUICK REFERENCE GUIDE

• R-410A refrigerant operates at 50% - 70% higher pressures than R-22. Be sure that servicing equipment and replacement components are designed to operate with R-410A.

• R-410A refrigerant cylinders are rose colored.

• Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.

• R-410A systems should be charged with liquid refrigerant. Use a commercial type metering device in the manifold hose.

° Manifold sets should be 750 psig high-side and 200 psig low-side with 520 psig low-side retard. ° Use hoses with 750 psig service pressure rating. ° Leak detectors should be designed to detect HFC refrigerant. ° R-410A, as with other HFC refrigerants, is only compatible with POE oils.

° POE oils absorb moisture rapidly. Do not expose oil to atmosphere. ° POE oils may cause damage to certain plastics and roofing materials.

° Vacuum pumps will not remove moisture from oil. ° A liquid line filter-drier is required on every unit. ° Do not use liquid line filter-driers with rated working pressures less than 600 psig.

° Do not install a suction line filter-drier in liquid line. ° Wrap all filter-driers and service valves with wet cloth when brazing.

° Do not use capillary tube indoor coils. ° Never open system to atmosphere while it is under a vacuum. ° When system must be opened for service, break vacuum with dry nitrogen and replace all filter-driers.

° Do not vent R-410A into the atmosphere. ° Observe all WARNINGS, CAUTIONS, NOTES, and bold text.

International Comfort Products, LLC

496 01 5501 01 Lewisburg, TN 37091 USA 21

ICP FEM4P1800A1, FEM4P1800AT1, FEM4P2400A1, FEM4P2400AT1, FEM4P3000A1 Installation Guide

Specifications and Main Features

Frequently Asked Questions

User Manual