ICP FSM2X2400A1 User Manual FAN COILS Manuals And Guides L0604342

ICP Evaporator Coils Manual L0604342 ICP Evaporator Coils Owner's Manual, ICP Evaporator Coils installation guides

User Manual: ICP FSM2X2400A1 FSM2X2400A1 ICP FAN COILS - Manuals and Guides View the owners manual for your ICP FAN COILS #FSM2X2400A1. Home:Heating & Cooling Parts:Icp Parts:Icp FAN COILS Manual

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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, CAU-

TION, and NOTE are used to identify levels of haz-

ard seriousness. The signal word DANGER is only

used on product labels to signify an immediate haz-

ard. The signal words WARNING, CAUTION, and

NOTE will be used on product labels and through-

out 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 opera-

tion.

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

Heater Packages ............................... 3

Position Unit ................................ 3 - 7

Air Ducts ...................................... 7

Electrical Connections ...................... 7 - 11

Refrigerant Tubing ............................. 11

Refrigerant Metering Device .................... 11

Condensate Drains ............................ 12

Accessories .................................. 13

Sequence of Operation ......................... 14

Start-up Procedure ............................ 14

Care and Maintenance ......................... 14

R-410A Quick Reference Guide ................. 15

DEATH, PERSONAL INJURY, AND/OR PROPERTY

DAMAGE 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 5000 01 October 2005

INTRODUCTION

Models FEM and FSM are designed for maximum flexibil-

ity and can be used for upflow, horizontal left or right, and

downflow applications (accessory kit required for down-

flow or horizontal right).

Model FSU is designed for upflow installation, and can be

field modified for downflow and horizontal left or right ap-

plications (accessory kits required for downflow or hori-

zontal).

All models are available for system sizes 11/2- 5 tons

(18,000 - 60,000 BTUH) nominal cooling capacity.

LOCATION

All models have a factory installed and appropriately

sized hard shut-off TXV metering device. FEM2, FSM2

and FSU2 are for R-22 refrigerant ONLY. FEM4, FSM4

and FSU4 are for R-410A refrigerant ONLY.

Factory approved electric heater packages are available

in sizes 3kW through 30kW. See Product Specification lit-

erature for available accessory kits.

Select the best position which suits the installation site

conditions. The location should provide adequate struc-

tural support, space in the front of the unit for service ac-

cess, 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.

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

sweating of casing may occur. On these installations a

wrap of 2" fiberglass insulation with a vapor barrier is rec-

ommended.

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 re-

mote 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 combus-

tible flexible ducting within 36 inches of the supply

end of the fan coil.

Figure 1 1Clearances and Unit Dimensions

OPENING)

All Sides 0

No Heaters From Supply Duct 0

All Sides 0

With Heaters From First 3 feet of Supply Duct to Combustibles 1

From Supply Duct to Combustibles after 3 feet 0

Unit Size

1800

2400

3000

3500/3600

4200

4800

6000

L(OPENING) _/_

Unit Size H (inches)

1800 421X6 421X6 421X6

2400 471Xs 471Xs 471Xs

3000 47%6 47%6 49%

3500 537/16

3600 537/16 495/8 495/8

4200 49% 49% 49%

4800 537/16 537/16 537/16

6000 593A6 593A6 593A6

(SERVICE ACCESS)

38-11-82

2 496 01 5000 01

HEATER PACKAGES

Factory approved, field installed, UL listed heater pack-

ages are available from the equipment supplier. See unit

rating plate for a list of factory approved heaters. 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

Afield 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.

OPTIONS

FRONT SERVICE CLEARANCE

18 - 48 models = 21"

60 model = 24"

UNITS

SECONDARY DRAIN

Figure 2 1

PRIMARY DRAIN

SECONDARY DRAIN

PRIMARY DRAIN

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 Y8to ¼ inch 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 2. A field-sup-

plied bottom closure is required.

Upflow Installation

FIELD SUPPLIED

SUPPLY DUCT

LOW VOLT

ENTRY

OPTIONS

11/2"

SLOPE COIL UNITS

MODEL SIZE A

18 (all) 12"

24 & 30 (all) 17"

35 (FEM) & 36 (FSU) 19"

FIELD MODIFIED

ASIDE RETURN

LOCATION FOR

SLOPE COIL

UNITS ONLY

FIELD SUPPLIED

RETURN PLENUM

B. DOWNFLOW INSTALLATION

In this application, field conversion of the evaporator coil

is required using accessory Downflow Kit along with an

accessory Base Kit. See installation instructions pack-

aged with accessory kit. See Product Specification litera-

ture for kit part numbers.

C. HORIZONTAL INSTALLATION

Unit must NOT be installed with access panels facing up

or down. Access panels must only face to the side.

FEM and FSM models are factory built for horizontal left

installation (refer to Figures 3 and 4). They can be field

converted to horizontal right (accessory Gasket Kit re-

496 01 5000 01 3

quired, see Product Specification literature for part num-

ber). Refer to Figures 5 and 6.

FSU models require accessory kits for any horizontal

installation (see Product Specification literature for re-

quired accessory kits).

Figure 3

NOTE: When suspending unit from ceiling, dimples in

casing indicate suitable location of screws for mounting

metal support straps (refer to Figure 3).

NOTE: For optimum condensate drainage performance

in horizontal installations, unit should be leveled along its

length and width.

Slope Coil In Horizontal Left Application (FEM & FSM factory configuration)

A-COIL

HORIZONTAL LEFT

LOW VOLT

ENTRY

OPTIONS

POWER

ENTRY

OPTIONS

Figure 4 1

FIELD

SUPPLIED

HANGING

STRAPS

SECONDARY PRIMARY

DRAIN DRAIN

FRONT SERVICE CLEARANCE

(FULL FACE OF UNIT)

SECONDARY 18 - 48 models = 21"

DRAIN 60 model = 24"

13/4_'

FILTER ACCESS

CLEARANCE

PRIMARY

DRAIN

A-Coil in Horizontal Left Application (FEM & FSM factory configuration)

FACTORY SHIPPED

HORIZONTAL LEFT

APPLICATION

COIL

-- BRACKET

COIL

SUPPORT

RAIL

DRAIN PAN

SUPPORT

BRACKET

COIL

BRACKET

HORIZONTAL

DRAIN PAN

AIR SEAL

REFRIGERANT

CONNECTIONS

PRIMARY DRAIN

HORIZONTAL LEFT

SECONDARY DRAIN

HORIZONTAL LEFT

4 496 01 5000 01

HorizontalRight Conversionof Units With Slope

Coils

1. Remove blower and coil access panel and fitting

panel (refer to Figure 5).

2. Remove coil mounting screw securing coil assem-

bly to right side casing flange.

3. Remove coil assembly.

4. Lay fan coil unit on its right side and reinstall coil as-

sembly with condensate pan down (refer to Figure

5).

Figure 5

Attach coil to casing flange using coil mounting

screw previously removed.

Align holes with tubing connections and conden-

sate 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.

Conversion for Horizontal Right Applications -Slope Coil

COIL MOUNTING BLOWER

SCREW ASSEMBLY

SLOPE COIL

SKI

DRAINPAN DRAIN

REFRIGERANT

CONNECTIONS

SECONDARY DRAIN

Horizontal Right Conversion of Units With A-Coils

1. Remove blower and coil access panel and fitting

panel (refer to Figure 6).

2. Remove coil mounting screw securing coil assem-

bly to right side casing flange.

3. Remove coil assembly.

4. Lay fan coil unit on its right side and reinstall coil as-

sembly with condensate pan down (refer to Figure

6).

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 (re-

fer to Figure 6).

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 brack-

et on each corner of vertical pan engages coil sup-

port 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 hori-

zontal pan.

10, Remove 2 oval coil access panel plugs and rein-

stall into holes on left side of coil access panel and

fitting panel.

11, Remove insulation knockouts on right side of coil

access panel

496 01 5000 01 5

12. Reinstall access fitting panels, aligning holes with 13. After brazing, make sure liquid and suction tube

tubing connections and condensate pan connec- grommets are in place to prevent air leaks and cab-

tions. Be sure to reinstall metal clip between fitting inet sweating.

panel and vertical condensate pan.

Figure 6 I Conversion for Horizontal Right Applications -A-Coil

SUPPORT

RAIL

CONNECTIONS HORIZONTAL

RIGHT

APPLICATION

BRACKET

DRAIN

SUPPORT

BRACKET

COIL_

SUPPORT--

RAIL

BRACKET

HORIZONTAL

DRAIN PAN

PRIAMRY

HORIZONTAL RIGHT

SECONDARY DRAIN

HORIZONTAL RIGHT

D. MANUFACTURED HOUSING AND MOBILE HOME

APPLICATIONS

1. Fan coil unit must be secured to the structure us-

ing field-supplied hardware.

2. Allow a minimum of 24 inches clearance from ac-

cess panels.

3. Recommended method of securing for typical ap-

plications:

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 struc-

ture using 5/_6"lag screws. Typical both sides of

fan coil.

b. If fan coil is against wall, secure fan coil to wall

stud using Ys"wide right-angle brackets. Attach

brackets to fan coil using No. 10 self tapping

screws and to wall stud using 5/_6"lag screws (re-

fer to Figure 7).

Figure 7 Mobile Home or Manufactured

Housing Applications

4" MAX

SECURE FAN COIL TO STRUCTURE

UNIT AWAY FROM WALL

PIPE STRAP

[IY _'Ib_L I_U IM blUe_b}

UNIT AGAINST WALL

Y_INCH THICK ANGLE

MOUNTING BRACKET

(TYPICAL BOTH SIDES)

I DOWN FLOW

-- BASE KIT

SECURE UNIT TO FLOOR

ANGLE BRACKET OR PIPE STRAP

4" MAX

6 496 01 5000 01

Removalof Bracketson

Figure8 ModularUnits

NOTE:Modular units can be disassembled and compo-

nents moved separately to installation area for reassemb-

ly. This process accommodates small scuttle holes and

limiting entrances to installation sites (refer to Figure 8).

-2SCREWS

BRACKET

[

BLOWER BOX

P 2 SCREWS

COIL BOX

2SCREWS

AIR DUCTS

Connect supply-air duct over the outside of %" flanges

provided on supply-air opening. Secure duct to flange us-

ing proper fasteners for type of duct used, and seal duct-

to-unit joint. If return-air flanges are required, install

factory authorized accessory kit.

Use flexible connectors between duct work and unit to

prevent transmission of vibration. When electric heater is

installed, use heat-resistant material for flexible connec-

tor between duct work and unit at discharge connection.

Duct work passing through unconditioned space must be

insulated and covered with vapor barrier.

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 alterna-

tive, 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 acous-

tical lining and fibrous duct work shall comply with Nation-

al Fire Protection Association as tested by UL Standard

181 for Class 1 air ducts.

ELECTRICAL CONNECTIONS

All Fan Coil models utilize an electronic fan board which

has a low voltage circuit protective fuse (5 amp), fan mo-

tor speed tap terminal (SPT), and time delay relay (TDR).

To disable the TDR feature, snip the jumper wire JW1 (re-

fer to Figure 9).

Before proceeding with electrical connections, make cer-

tain that supply voltage, frequency, phase, and circuit am-

pacity are as specified on the unit rating plate. See unit

wiring label for proper field high and low voltage wiring.

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 form

the unit, only the Load side of the circuit is de-energized.

The Line side remains live until the main (remote) discon-

nect is turned off.

496 01 5000 01 7

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.

ELECTRICALSHOCKHAZARD

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 9lFan Coil Printed Circuit Board

FSM, FSU

CEBD4S0_4L 01B SS0LBm_ o _ _ HSGI

HI<61EAO06

R B TCCC

{

RIO

HK61 EA010

R G TCCW

A. LINE VOLTAGE CONNECTIONS

Fan Coils installed without electric heat require the use of

a factory-authorized Power Plug Kit (EBAC01 PLG). This

kit provides the electrical connections necessary to sup-

ply 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 discon-

nect to yellow and black stripped leads on Power

Plug (EBAC01 PLG).

2. Connect ground wire to unit ground lug.

3. When installing an electric heater, remove and dis-

card power plug (if equipped) from fan coil and con-

nect male plug from heater to female plug from unit

wiring harness. (See Electric Heater Installation In-

structions.)

B. 24V CONTROL SYSTEM

Connection to Unit

Wire low voltage in accordance with wiring label on the

blower (also refer to Figures 10, 11,12, 13, and 14). Use

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

make the low-voltage connections between the thermo-

stat, the unit, and the outdoor equipment. If the thermo-

stat is located more than 100 feet from the unit (as

measured along the low voltage wire), use 16 AWG col-

or-coded, insulated (35 °C minimum) wire. All wiring

must be NEC Class 1 and must be separated from incom-

ing power leads. Refer to outdoor unit wiring instructions

for additional wiring recommendations.

Heater Staging

The controls are factory circuited for single-stage opera-

tion (refer to Figures 11 & 12). When 2 stages are de-

sired, cut W3 at the W2 wire nut, strip, and reconnect

according to the thermostat kit instruction (refer to Figure

13 - outdoor thermostat optional). When 3 stages are de-

sired, cut the W2 wire nut off and discard. Strip W2, W3,

and E, and reconnect according to the thermostat kit in-

structions (refer to Figure 14 outdoor thermostats

optional).

8 496 01 5000 01

UNIT OPERATION HAZARD

Failure to follow this caution may result in improp-

er product operation.

If W2, W3, and E on any 3 stage heater (18, 20, 24,

or 30kW) are individually connected -as with out-

door thermostats or any other situation -emer-

gency heat relay must be used. If relay is not used,

blower may not operate when heaters are ener-

gized.

Figure 10 /Wiring Layout -Air Conditioning

Unit (Cooling Only)

THERMOSTAT

[]

FAN COIL

'CONTROL)

AIR COND.

Wiring Layout -Air Conditioning

Figure 11 Unit (Cooling and 1-Stage Heat)

THERMOSTAT FAN COIL

CONTROL)

AIR COND.

Figure 12 Wiring Layout -Heat Pump Unit

(Cooling and 1-Stage Heat with

No Outdoor Thermostat)

THERMOSTAT FAN COIL

(CONTROL)

[___ RED R

[:__ BRNC

[2__ w2

/B_ W3

[] LVlO E

[]

HEATPUMP

(CONTROL)

_--R

_- C

_W2

C3_o

Figure 13 Wiring Layout -Heat Pump Unit

(Cooling and 2-Stage Heat with

One Outdoor Thermostat)

THERMOSTAT FAN COIL

(CONTROL)

[]__c

[_]__ w_

I _E

[] _w3

[]

HEAT PUMP

(CONTROL)

Z__ R

_ C

ODTS

496 01 5000 01 9

Wiring Layout-Heat Pump Unit

Figure 14 (Cooling and 2-Stage Heat with

Two Outdoor Thermostats)

FAN COIL

THERMOSTATCONTRO_ Eo TT%

c:x

_2W

U II -T

Transformer Information

Transformer is factory wired for 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 15).

Figure 15 1Transformer Connections

BROWN

RED

YELLOW

BLACK

C. GROUND CONNECTIONS

ELECTRICALSHOCKHAZARD

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.

NOTE: Use UL listed conduit and conduit connectors for

connecting supply wire(s) to unit to obtain proper ground-

ing. 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.

FEM models: fan speed selection is done at the fan mo-

tor. To change motor speeds, reposition wire at fan motor

speed terminals labeled 1-2-3 (refer to Figure 16).

FSM and FSU models: fan speed selection is done at the

fan relay on the electronic fan board. To change motor

speeds, disconnect fan lead used on relay terminal (SPT)

and replace with motor speed lead desired (refer to Figure

17). Save insulating cap and place on motor lead re-

moved from relay.

NOTE: In low static applications, lower motor speed tap

should be used to reduce possibility of water being blown

off coil.

All units have 2 or 3 motor speed taps. Low speed (red or

1) is designed for mismatch outdoor unit applications.

Medium speed (blue or 2) is designed for straight

matched operations. High speed (black or 3) is used with

high external static duct situations on straight matched

systems.

10 496 01 5000 01

Figure16 1FEM Motor Speed Selection

Figure 17

FAN

iNSULATING CAP (2)

MOTOR SPEED

TAP LEADS

COMMON YELLOW

FSM & FSU Fan Coil Relay andSpeed Tap Terminal

WRAPPER -'_

FAN DECK

REFRIGERANT TUBING

Size and install refrigerant lines according to information

provided with outdoor unit. Route refrigerant lines to the

fan coil in a manner that will not obstruct service access to

the unit or removal of the filter.

1. Find the liquid tube grommet inthe small-parts bag

and slide it onto the liquid refrigerant line (field line-

set).

2. Remove the lower door. Remove the tubing plate

(with suction tube grommet) and slide the plate with

grommet onto the refrigerant lines (field line-set),

away from braze joints.

3. Remove rubber plugs from coil stubs using a pulling

and twisting motion. Hold coil stubs steady to avoid

bending or distorting.

4. Wrap TXV and nearby tubing with a heat-sinking

material such as a wet cloth.

REFRIGERANT METERING DEVICE

5. Fit refrigerant lines into coil stubs. Wrap a heat sink-

ing material such as a wet cloth behind braze joints.

6. Braze using a SiI-Fos or Phos-copper alloy.

7. After brazing, allow joints to cool. Slide tubing plate

back into place and position grommets around suc-

tion and liquid tubes to ensure air seal.

PRODUCT DAMAGE HAZARD

Failure to follow this caution may result in product

damage.

Braze with SiI-Fos or Phos-copper alloy on cop-

per-to-copper joints and wrap a wet cloth around

rear of fitting to prevent damage to TXV.

FEM2, FSM2, FSU2 Models:

These Fan Coils have a factory installed hard shut-off

TXV designed only for use with R-22 refrigerant, Use

only with outdoor units designed for R-22.

FEM4, FSM4, FSU4 Models:

These Fan Coils have a factory installed hard shut-off

TXV designed only for use with R-410A refrigerant, Use

only with outdoor units designed for R-410A.

TXV is factory set and not field adjustable,

PRODUCT DAMAGE HAZARD

Failure to follow this caution may result in product

damage,

This Fan Coil has a hard shut-off TXV metering de-

vice, A compressor Hard Start Kit is REQUIRED in

all applications where the matching outdoor unit

has a single-phase reciprocating compressor.

496 01 5000 01 11

CONDENSATE DRAINS

Unit is provided withprimary and secondary 3/4"NPT drain

connections. Refer to Figures 2, 3, 4, 5, and 6 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 (re-

fer to Figure 18). Factory approved condensate traps are

available (accessory part number EBAC01CTK).

Install traps in the condensate lines as close to the coil as

possible (refer to Figure 20), but avoid blocking filter ac-

cess panel.

Install drain lines below the bottom of the drain pan and

pitch the drain lines down from the coil at least 1/4inch per

foot of run. Horizontal runs over 15 feet 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.

Be sure to install plastic push-in plugs in unused conden-

sate drain holes.

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 18). Shallow, running traps are in-

adequate and DO NOT allow proper condensate

drainage (refer to Figure 19).

Figure 18 Recommended Condensate Trap

Figure 19 1 Insufficient Condensate Trap

DO NOT USE SHALLOW RUNNING TRAPS!

Figure 20 1 Condensate Drain

¢-

o o o

UIRED

(USE FACTORY KIT OR

FIELD-SUPPLIED TRAP)

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)

12 496 01 5000 01

ACCESSORIES

A. ELECTRONIC AIR CLEANER

The Electronic Air Cleaner may be connected to FSM and

FSU fan coils as shown in Figure 21. This method re-

quires a field supplied transformer. See Electronic Air

Cleaner literature for kit requirements,

Wiring Layout of Electronic Air

Figure 21 Cleaner to Fan Coil (FSM & FSU)

FAN RELAY /

230VAC-r2°Yq

SPT NO NC

CONTROL BOARD

R G T C C

¢''I'

CONVERSION KIT _ OM

TO TRANSFORMER

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 Figures 22 & 23,

Figure 22 IWiring Layout of Humidifier to

Heat Pump

THERMOSTAT

[]-

[]

FAN COIL

(CONTROL)

It l _LL___J

I I

FAN HU RELAY I

I HUMIDISTAT

L....

HEAT PUMP

(CONTm..i..O L)

C:% R

C3._0

_ w2

Wiring Layout of Humidifier to

Figure 23 Fan Coil with Electric Heat

FAN COIL

THERMOSTAT (CONTROL)

[___:q REO R

IZb_ w2

Ii _ E

i_ C AIR COND.

I I

[] i I _

I I- 1 HUMID

115V_--_ _--_

496 01 5000 01 13

SEQUENCE OF OPERATIONS

A. CONTINUOUS FAN

Thermostat closes R to G. G energizes fan relay on elec-

tronic fan board which completes circuit to indoor blower

motor. When G is de-energized, there is a 90 second

delay before relay opens.

B. COOLING MODE

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

pump only). G energizes fan relay on electronic fan board

which completes circuit to indoor blower motor. When G

is de-energized, there is a 90 second delay before fan

relay opens.

C. HEAT PUMP HEATING MODE

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

relay on electronic fan board which completes circuit to in-

door blower motor. When G is de-energized, there is a 90

second 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 ener-

gizes 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

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 con-

tacts on fan relay. When W is de-energized, electric heat

relay(s) opens.

START-UP PROCEDURE

Refer to outdoor unit Installation Instructions for system

start-up instructions and refrigerant charging method de-

tails,

CARE AND MAINTENANCE

The system should be regularly inspected by a qualified

service technician. Consult the servicing dealer for rec-

ommended 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. Re-

usable type filters may be cleaned by soaking in mild de-

tergent and rinsing with cold water. Install filters with the

arrows on the side pointing in the direction of air flow.

Condensate Drain

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.

During the cooling season check at least monthly for free

flow of drainage and clean if necessary.

14 496 01 5000 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 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 with an R-22 TXV.

• If indoor unit is equipped with an R-22 TXV, it must be changed to an R-410A TXV.

• 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,

496 01 5000 01 15

ICP FSM2X2400A1 User Manual FAN COILS Manuals And Guides L0604342

ICP Evaporator Coils Manual L0604342 ICP Evaporator Coils Owner's Manual, ICP Evaporator Coils installation guides

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