CARRIER Air Handler (indoor Blower&evap) Manual L0210318

User Manual: CARRIER CARRIER Air Handler (indoor blower&evap) Manual CARRIER Air Handler (indoor blower&evap) Owner's Manual, CARRIER Air Handler (indoor blower&evap) installation guides

Open the PDF directly: View PDF .
Page Count: 20

Installation Instructions

Direct Expansion

Fan Coil

001-006

FK4C

A98023

Fig. l_Model FK4C

NOTE: Read the entire instruction manual before starting the installation.

This symbol --_ indicates achange since the last issue.

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fLre, electrical shock, or other conditions winch may

cause personal injury or property damage. Consult a qualified iastuller, 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 instnlctions

packaged with kits or accessories when installing.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have rue 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/tx. When you see this symbol on the unit and in instructions manuals, be alert to

the potential for personal injury.

Understand the signal words DANGER, WARNING, CAUTION, and NOTE. 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 winch 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. NOTE

is used to highl4ght suggestions which will result in enhanced installation, reliability, or operation.

/_, 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.

INTRODUCTION

Model FK4C Fan Coil units are designed for flexibility and can be used for upflow, horizontal, or downflow (kit required and manufactured and

mobile homes) applications. These units are designed specifically for Puron (R-410A) and must be used only with Puren air conditioners and heat

pumps as shipped.

Form: IM-FK4C-08 Cancels: IM-FK4C-07 Pdnted in U.S.A. 3-02 Catalog No. 63FK-4C4

POWERENTRY"--_ ;UPPLIED

SUPPLYDUCT

OPTIONS

001-005 21olN.

006 24-1N. FRONT SERVICE ---_

CLEARANCE

UPFLOW/_

UPELOW/DOWNFLOWJ_------_----_--_J_

PNI__

UPFLOWK)OWNFLOW _.

SECONDARY DRAIN q

UPFLOW/DOWNFLOW J

PRIMARY DRAIN

ENTRY

OPTIONS

IUNIT 1 A

001 17 In.

003 19 In.

FIELD MODIFIED

A SIDE RETURN

LOCATION FOR

2 1/2" SLOPE COIL

UNITS ONLY

FIELD SUPPLIED

RETURN PLENUM

A00088

Fig. 2---Slope Coil Unit in Upflow Application

Theseunits are available for application in systems of 24,000 ilvough 60,000 Btah nominal coolingcapacities.Factory-anthorizod,field-instaged

electric heater packages are available in 5 through 30 kw. See Product Data for available accessory kits.

INSTALLATION

PROCEDURE 1---CHECK EQUIPMENT

Unpack unit and move to final location. Remove carton taking care not to damage unit.

Inspect equipment for damage prior to installation. File claim with shipping company ff shipment is damaged or incomplete. Locate unit rating

plate which contains proper installation information. Cheek rating plate to be sure unit matches job specifications.

PROCEDURE 2--MOUNT FAN COIL

Unit canstand or lie on floor, or hang from ceiling or wall. Allow spacefor wiring, piping, and servicingunit.

IMPORTANT: When unit is instaned over a finished ceiling and/or living area, building codes may require a field-supplied seconderY condensate

pan to be installed under the entire unit. Some localities may allow the alterative of running aseparate, secondary condensate line. Consult local

codes for additional restrictions or precautions.

When installing any fan coil over a finished ceiling and/or living area, installation of a secondary drain pan under entire unit to avoid damage to

ceiling is recommended.

FK4C Fan Coils can be installed for upflow and horizontal-left applications as factory shipped. (See Fig. 2, 4and 8.) Units can be installed for

horizontal-right applications with field modifications. (See Fig. 5.) Units may be converted for downflow applications using factory-anthorized

accessory kit.

NOTE: To ensure proper drainage for horizontal installations, unit must be installed so it is within 1/8 in. level of the length and width of unit.

A. Upflow Installation

If retttm air is to be ducted, install duct flush with floor. Set unit on floor over opening,

Only use return-air opening provided. All retain air must pass through the coil. (See Fig. 2.)

B. Modular Units

The FK4C Fan Coil in size 006 is a 2-pieee modular unit. Modular construction allows installer to disassemble unit into 2 components, coil box

and blower box, for ease of installation. (See Fig. 3.)

To disassemble unit, remove rear comer brackets by removing 2 screws which secure brackets. (See Fig. 3.) Remove either 2 screws in each front

comer of coil box, or 2 screws in blower box. Do not remove all 4 screws in each corner. (See Fig. 3.) Sections may now be separated by lifting

top section from lower section.

To reassemble, reverse above procedure. Be certain to reinstall all fasteners when reassembling.

--2--

-2SCREWS

2 SCREWS

A95293

Fig. 3_Modular Unit Assembly

C. Horizontal Installations

Be sure installation complies with all applicable building codes that may require installation of a secondary condensate pan.

1. Arrange support for unit by setting it in or above secondary condensate pan.

2. When suspending unit from ceiling dimples in casing indicate proper location of screws for mounting metal support straps. (See Fig. 4.)

D. Horizontal-Right Conversion of Units with Slope Coils

To convert units for horizontal right installations:

1. Remove blower and coil access panels and fitting panel. (gee Fig. 5.)

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

3. Remove coil assembly.

4. Lay fan coil on its right side and reinstall coil assembly with condensate pan down. (See Fig. 5.)

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

6. Reinstall access panels and fitting panel, aligning holes with tubing connections and condensate pan connections.

Make sure liquid and suction tube grommets are in place to prevent air leaks and cabinet sweating. Install grommets after brazing.

E. Horizontal Right Conversion of Units With A-Coil

To convert units for horizontal right installations:

1. Remove blower and coil access panels. (See Fig. 6.)

2. Remove metal clip securing fitting panel to condensate pan. Remove fitting panel.

3. Remove 2 snap-in clips securing A-coil in unit.

4. Slide coil and pan assembly out of unit.

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

6. Convert air-seal assembly for horizontal right.

a. Remove air-seal assembly from coil by removing 4 screws. (See Fig. 6.)

b. Remove air splitter (B) from coil seal assembly by removing 3 screws. (See Fig. 6-factory-shipped inset.)

c. Remove filler plate (A) and install air splitter (B) in place of Idler plate.

d. Install filler plate (A) as shown in horizontal right application.

e. Remove condensate troughs (C) and install on opposite tube sheets.

SUPPLIED

HANGING

STRAPS

SECONDARY

001_)05 21-1N.

006 24-1N.

FRONT SERVICE

CLEARANCE

FULL FACE

_F UNIT)

RIMARY

DRAIN

ENTRY

OPTIONS

POWER

ENTRY OPTIONS

SECONDARY

DRAIN

1 3/4 IN.

FILTER ACCESS

CLEARANCE

A001_5

Fig. 4--Slope Coil in Horizontal-Left Application (Factory Ready)

f. Install hose onto plastic spout.

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

8. Slide coil assembly into casing. Be sure coil bracket on each comer 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 offset is used on fight 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 fight side of coil access panel.

12. Reinstall access and fitting panels, aligning holes with tubing connections and condensate pan connections. Be sure to reinstall metal clip

between firing panel and vertical condensate pan.

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

F. Oownflow Installations

To convert units for downflow applications, refer to Installation Instructions supplied with kit for proper installation. For FK4C unit size 003, use

kit Part No. KFADC0201SLP. For FK4C unit sizes 002, 005, and 006 use kit Part No. KFADC0401ACL. Use f'n'eproof resilient gasket, 1/8- to

1/4-in. thick, between duct, unit, and floor.

G. Manufactured and Mobile Home Housing Applications

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

2. Allow a minimum of 24" clearance from access panels.

3. 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-in. lag screws. Typical both sides of fan coil.

h. If fan coil is against wall, secure fan coil to wall stud using 1/8-in. thick fight-angle brackets. Attach brackets to fan coil using No. 10

self tapping screws and to wall stud using 5/16-in* lag screws. (See Fig. 7.)

PROCEDURE 3.--AIR DUCTS

Connect supply-air duct over outside of 3/4-in. flange provided on supply-air opening. Secure duct to flange with proper fasteners for type of duct

used, and seal duct4o-unit joint.

Duct connection flanges are provided on unit air discharge connection.

-----4--

COIL MOUNTING BLOWER

ASSEMBLY

COIL

RAIL

SLOPE COIL.

SKI

DRAINPAN PRIMARY DRAIN

-OVERFLOW HOLE

SECONDARY DRAIN

Fig. 5--Slope Coil in Horizontal Right Application

A02002

SUPPORT

RAIL

CONNECTIONS

EAL

HORIZONTAL

RIGHT

.,_ APPLICATION

BRACKET

SUPPORT

BRACKET

COIL--_

SUPPORT

RAIL

BRACKET

DRAIN PAN

HORIZONTAL RIGHT

SECONDARY DRAIN

HORIZONTAL RIGHT A00071

Fig. 6--A-Coil in Horizontal-Right Application

When using FK4C units with 20-, 24-, and 30-kw electric heaters, maintain a l-in. clearance from combustible materials to discharge plenum and

ductwork for a'distance of 36 in. from unit. Use accessory downflow base to maintain proper clearance on downfiow installations.

Use flexible connectors between ductwork and unit to prevent transmission of vibration. When electric heater is installed, use heat resistant material

for flexible connector between ductwork and unit at discharge connection. Duetwork passing through unconditioned space must be insulated and

covered with vapor barrier.

Ductwork Acoustical Treatment

Metal duct systems that do not have a 90 ° elbow and 10 ft of main duct to first branch takeoff may require internal acoustical insulation lining.

As an alternative, fibrous ductwork may be used if coustmeted and installed in accordance with the latest edition of SMACNA coustmction

standard on fibrous glass ducts. Both acoustical lining and fibrous ductwork shall comply with National Fn_ Protection Association Standards 90A

or B as tested by UL Standard 181 for Class 1 air ducts.

--)

4" MAX

4_MAX

_. SECURE FAN COILTO STRUCTURE

UiN!T AWAY FROM WALL

'PIPE STRAP

o_ (TYPICAL BOTH SIDES)

UNIT AGAINST WALL

1/8-1N. THICK ANGLE

MOUNTING BRACKET

(TYPICAL BOTH SIDES)

DOWN FLOW

BASE KIT (KFACB)

SECURE UNIT TO FLOOR

ANGLE BRACKET OR PIPE STRAP

Fig. 7--A-Coil

A02003

FACTORY SHIPPED

HORIZONTAL LEFT

APPLICATION

COIL

RACKET

COIL

SUPPORT

RAIL

DRAIN PAN

SUPPORT

COIL

BRACKET

HORIZONTAL

DRAIN PAN

AIR SEAL

PRIMARY DRAIN

HORIZONTAL LEFT

SECONDARY DRAIN

HORIZONTAL LEFT

REFRIGERANT

CONNECTIONS A00072

Fig. 8---A-Coil in Horizontal Left Application (Factory Ready)

PROCEDURE 4_ELECTRICAL CONNECTIONS

On units with a factory installed disconnect with pull-out removed, service and maintenance can be safely performed on only the load side of the

conlxol package.

A_ WARNING: Field wires on the line side of the disconnect found in the fan coil unit remain live, even when the pull-out

is removed. Service and maintenance to incoming wiring can not be performed until the main disconnect switch (remote to

the unit) is turned off. Failure to do so will result in electdcal shock causing personal injury or death.

A. Line-Voltage Connections

If unit contains an electric heater, remove and discard power plug from fan coil and connect male plug from heater to female plug from unit wiring

harness. (See Electric Heater Installation lnatmclions.)

For units without eleca'ic beat:

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

2. Connect ground wire to unit ground lug.

NOTE: Units installed without elecl_Scbeat should have a field-supplied sheet metal block-off plate covering the heater opening. This will reduce

air leakage and formation of exterior condensation.

Check all factory wiring per trait wiring diagram and inspect factory wiring connections to be sure none were loosened in transit or installation.

WARNING: Before installing or servicing system, always turn off all power to system. There may be more than 1

disconnect switch. Turn off accessory heater power if applicable. Electrical shock can cause personal injury or death,

CAUTION: If a disconnect switch is to be mounted on the unit, select a location where drill or fastener will not contact

electrical or refrigerant components. Electrical shock can cause personal injury or death.

NOTE: Before proceeding with e|ectrical connections, make certain that supply voltage, frequency, and phase are as specified on unit rating plate.

Be sure that electrical service provided by the utility is sufficient to handle the additional load imposed by this equipmenL See 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 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.

B. 24-V Control System Connections to Unit Printed-Circuit Board (PCB)

Refer to unit w_ng instructions for recommended wiring procedures. Use No. 18 AWG color-coded, insulated (35°C minimum) wires to make

low-voltage connections between thermostat and unit. If thermostat is located more than 100 ft from unit (as measured along the low-voltage

wires), use No. 16 AWG color-coded, insulated (35°C minimum) wires. PCB is circuited for single-stage heater operation. When additional heater

staging is desired using outdoor thermostats or Intelligent Heat Staging, remove Jumper J2 on PCB to enable staging.

Connect low-voltage leads to thermostat and outdoor unit, (See Fig. 9, Ill, 11, or 12.)

INDOOR CONTROL

HEAT STAGE 2

N/A

HEAT STAGE 1

COOL STAGE I

FAN

24 VAC HOT _"

DEHUMIDIFY _-'_--_"

24 VAC COMM

HUMIDIFY

FAN COIL 1-SPEED

AIR CONDITIONER

.... [_

.... ]

.... @ RE.OVEJt JUMPE_

[] FO.

• DEHUMIDIFY

_ _ _HUMIDIFIER /

Fig. 9--FK4C Fan Coil Wiring with 1-Speed Air Conditioner

Ag8477

C. intelligent Heat Staging Option

Intelligent Heat staging of the electric heat package is possible when the FK4C is installed as a part of a single-speed heat pump system using a

corporate 2-speed programmable thermostat (model TSTATXXP2S01-B), Thermidistat TM Control, or capable zoning control and any 1 of the

following electxic heat packages:

Relay heaters KFCEH1401N09, KFCEHIS01FI5, KFCEHI701C 15, KFCEHI8lllF20, KFCEHI901C20, KFCEH2!01F24, OR KFCEH2201F30.

Complete system low-voltage wiring as shown in Fig. 9, 10, 11, or 12.

NOTE: Where local codes require thermostat wiring be routed through conduit or raceways, splices can be made inside the fan coil unit. All

wiring must be NEC Class 1 and must be separated from incoming power leads.

Afactory-authorized disconnect kit is available for installation of 0- through 10-kw applications. When electric heat packages with circnit breakers

are installed, the circuit breaker can be used as a disconnect. Transformer is factory wired for 230-v operation. For 208-v applications, disconnect

black wire from 230-v terminal on Wansformer and connect it to 208-v terminal. (See Fig. 13.)

The secondary circuit of transformer is protected by a 5-amp fuse mounted on printed-circuit board.

INDOOR CONTROL

HEAT STAGE 2

HEAT STAGE I

COOL STAGE 1

COOL STAGE 2

FAN

24 VAC HOT

DEHUMIDIFY

24 VAC COMM

HUMIDIFY

NIA

OUTDOORI--{2!:}

FAN COIL 2-SPEED

AIR CONDITIONER

[ 1

.... _ _ REMOVE J2 JUMPER

.... ! _ • FOR HEAT STAGING

....°REMOVE

]J1 JUMPER FOR

DEHUMIDIFY

.... !__]. MCOE_

HUMIDIFIER /

_m_J

Fig. 10_FK4C Fan Coil Wiring with 2-Speed Air Conditioner

INDOOR CONTROL FAN COIL 1-SPEED

HEAT PUMP

RVS COOLING

-IEAT STAGE 3

-IEAT STAGE 2

HEAT/C(X)E _21-"

STAGE 1

FAN[_

24 VAC HOT

DEHUMIDIFY

24 VAC COMM

HUMIDIFY

RVS HEATING

OUTERI--F_

c&_."#c°,"oN]_l-_t

.... I

REMOVE J2 JUMPER

"_ "_'- FOR HEAT STAGING

....

REMOVE

] I1 JUMPER FOR

'DEHUMIDIFY

.P_r'_M,D,F,ERL_,q.J

OUTDOOR

............. J

Fig, 11_K4C Fan Coil Wiring with 1-Speed Heat Pump

A98478

A98475

IMPORTANT: Do not use outdoorthermostat with Intelligent Heat Staging.

D. Comfort Options-Perfect Heat Plus/SuperComfort Heat and Superdehumidify

Warmerheatingand Superdehumidifyoptions arepossible when the FK4CFan Coil is installedwith an outdoortemperaturesensor (neededfor

warmer heating only), aThermidistatTM ConffoL Zone Perfect Plus, or ComfortZone II. See Procedure8, I. Comfort Optiousfor complete

descriptionof these features.Complete the system low-voltagewiring as shown in Fig. 9. 10. I1. or t2.

---8---

--)

INDOOR CONTROL

RVS COOLING

HEAT!COOL

STAGE 1

HEAT STAGE 3

HEAT/COOL __

STAGE 2

FAN

24 VAC HOT [_--

DEHUMIDIFY

24 VAC COMM [_

HUMIDIFY

RVS HEATING

ouTDooRI--F

FAN COIL 2-SPEED

HEAT PUMP

--:-:I

.... i "[_"

.... '"[_]""T'_M_EJ--_2

--:,, ,JUMPERFOR

HEAT _

__.'-I-IN

'REMOVE J1 FOR

•_ __ 'DEHUMIDIFY

- -- -- MODES

....

HUMIDIFIER J

.-- .__ OUTDOOR

SENSOR ]_'-]

---J

Fig. 12--FK4C Fan Coil Wiring with 2-Speed Puron Heat Pump

A02005

BLK

E. Ground Connections

Fig. 13_Transformer Connections

A94067

AN WARNING: The cabinet must have an uninterrupted or unbroken ground according to NEC, ANSI/NFPA 70 and local

cedes 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 cedes. (See Ground/Conduit Note below.) Failure to follow this

warning could result in an electrical shock, fire, or death.

NOTE: Use UL listed conduit and conduit connector to connect supply wire(s) to unit and obtain proper grounding. If conduit connection uses

reducing washers, a separate ground wire must be used. Grounding may also be accomplished by using grounding lug provided in control box.

Use of dual or multiple supply circuits will require grounding of each circuit to ground lugs provided on unit and heaters.

PROCEDURE 5---REFRIGERANT TUBING CONNECTION AND EVACUATION

Use accessory tubing package or field-supplied tubing of refrigerant grade. Insulate entire suction tube if field-supplied tubing is used. Tubing

package has an insulated suction tube. Do not use damaged, dirty, or contaminated tubing because it may plug refrigerant flow control device.

When tubing package is used and sweat connections are made within 60 sec, coil and tubing system does not zequire evacuation. Always evacuate

coil and field-supplied tubing to 500 microns before opening outdoor unit s_rvic¢ valves.

/_ CAUTION: A brazing shield MUST be used when tubing sets are being brazed to the unit connections to prevent

damage to the unit surface. Braze with Sil-Fos or Phos-copper on copper to copper joints. Wrap s wet cloth around rear of

fitting to prevent damage to TXV.

--9--

/_ CAUTION: To prevent damage to thermostatic expansion valve, remove sensor bulb from vapor tube while brazing

vapor connections. Units have sweat suction and liquid tube connections, Make suction tube connection firsL

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

1. Cut tubing to correct length.

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

3. Braze with Sil-Fns or Phos-copper.

CAUTION: Wrap a wet cloth around rear of fitting to prevent damage to factory-made joints.

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

PROCEDURE 6--CONDENSATE DRAIN

Units are equipped with primary and secondary 3/4-in. FPT drain connections. For proper condensate line installation see Fig. 2, 4, 5, and 6. To

prevent property damage and achieve optimum drainage performance, BOTH primary and secondary drain lines should be installed and include

properly-sized condensate traps. (See Fig. 14 and 16.) Factory-approved condensate traps are available, Be sure to install plastic push-in plugs in

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

pins 1-112 turns. Use pipe dope.

UNIT

--)

2_MIN

Fig. 14--Recommended Condensate Trap

A02(_6

DO NOT USE SHALLOW RUNNING TRAPS!

Fig. 15--Insufficient Condensate Trap

A95320

/_, CAUTION: Shallow running traps are inadequate and DO NOT allow proper condensate drainage. (See Fig. 15.)

NOTE: When connecting condensate drain lines avoid blocking filter access panel. Prime both primary and secondary condensate traps after

connecting to drain pan.

NOTE: If unit is located in or above a living space where damage may result from condensate overflow, a field-supplied external condensate pan

should be installed underneath the entire unit, and a secondary condensate line (with appropriate trap) should be run from the unit into the pan.

Any condensate in this external condensate pan should be drained to anoticeable place. As an alternative to using an external condensate pan, some

localities may allow the use of a separate 3/4-in. condensate line (with appropriate a'ap) to a place where the condensate will be noticeable. The

owner of the structure must be informed that when condensate flows from the secondary drain or external condensate pan, the unit requires

servicing, or water damage will occur.

Install traps in the condensate lines as close to the coil as possible. (See Fig. 16,) Make sure that the outlet of each wap is below its connection

to the condensate pan to prevent condensate from overflowing the drain pan. Prime all traps, test for leaks, and insulate traps ff located above a

living area.

--10--

ILTER

ACCESS

PANEL

PRIMARY TRAP REQUIRED_X_

(USE FACTORY KIT OR

FIELD-SUPPLIED TRAP OF

SUFFICIENT DEPTH.

STANDARD PRIMARY TRAPS

ARE NOT SUFFICIENT, SEE

RGUP_ OF RECOMMENEDED

CONDENSATE TRAP)

SECONDARY DRAIN REQUIRED

(USE FACTORY KIT OR

FIELD-SUPPLIED TRAP)

A02(_4

_) Fig. 16--Condensate Trap and Unit

Condensate drain lines should be pitched downward at a minimum of 1in. for every 10 ft. of length. Consult local codes for additional restrictions

or precautions.

_, CAUTION: Never operate unit without a filter or with filter access door removed. Damage to blower motor or coil can

result.

IMPORTANT: Factory authorized filters must be used when locating the filter inside the unit. (See Table l.) For those applications where access

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

PROCEDURE T--UNIT START-UP

Refer to omdcor unit Installation Instructions for system start-up instluctions and refrigerant charging method details.

PROCEDURE 8_EASY SELECT CONFIGURATION TAPS

Easy Select TM taps are used by the installer to configure a system. ICM2 motor uses the selected taps to modify its operation to a pre-programmed

table of airflows. (See Table 3 and 4.) Airflows are based on system size or mode of operation and those airflows are modified in response to other

inputs such as the need for de-humidification. (See Fig. 17 and 180

The FK4C Fan Coil must be configured to operate properly with system components with which it is installed. To successfully configure a basic

system (see information printed on circuit board label located next to select pins), move the 6 select wires to the pins which match the components

used.

A. AUX HEAT KW/CFM -Select heater range for size of electric heater installed

Installer must select the auxiliary heat airflow approved for application with kw size heater installed. If no heater is installed, this step can be

skipped. Each select pin is marked with a range of heaters for which airflow, also marked, is approved. For increased comfort select the uarrowest

kw range matching the heater size, for example, 0-10 for 10-kw heater. This airflow must be greater than the minimum CFM for electric heater

application with the size system installed for safe and continuous operation. (See Table 5 and 6for airflow delivery and minimum CFM.) Note

that airflow marked is the airflow which will be supplied in emergency heat mode and heating mode on air conditioners when electric heat is the

primary heating source. In heat pump heating mode when electric heaters are energized, the ICM2 will run the higher of heat pump heating airflow

and electric heater airflow to ensure safe heater operation. The factory selection is the largest heater range approved. (See Fig. 17, A as indicated.)

B. AC/HP SIZE -Select system size installed

The factory setting for air conditioner or heat pump size is the largest unit meant for application with the model of fan coil purchased. Installer

needs to select air conditioner or heat pump size to ensure that airflow delivered falls within proper range for the size unit installed. This applies

to all operational modes with the exception of electric heat modes. (See Fig. 17, B as indicated.)

C. SYSTEM TYPE - Select system type installed AC or HP

type of system must be selected:

1. AC - Air conditioner

2. HP-COMFORT - Heat Pump Comfort provides approximately 315 CFM per ton for higher normal heating air delivery temperature.

Provides approximately 350 CFM per ton cooling airflow for good humidity removal.

3. HP-EFF - Heat Pump Efficiency provides same airflow for heating and cooling modes to increase overall lip efficiency; approximately 350

CFIVl per ton.

The factory setting is AC. (See Fig. 17, C as indicated.)

mll--

FILTER KIT

(12 PACK)

Table 1--Filter Kits

PART NUMBER

KFAFK0212MED

KFAFK0312LRG

KFAFK041 _

SIZE USED Wlilt

001,002

003, 005

OO6

LOWVOLTAGETERMINALBLOCK---_

PRINTEDCIRCUITBOARD---_ ___

^c_=s_ ;/ lll_l

B ...... -i -]-' Y,

C o_ _ _ _

,@o

o-J Tl /;o

MOLEX12-PINCONNECTOR

A95275

Fig. 17_etail of FK4C Printed-Circuit Board

D. AC/HP CFM ADJUST -Select Medium, Low, or High airflow

To provideairflow at ratesdescribed above,the AC/HP ADJUST selectis factory set to the nominal(nora)tap. The adjustselections H]]LO will

regulate airflow supplied for all operational modes, except non-heat pump healing modes. HI provides 15 percent air/low over nominal unit size

selected and IX) provides 10 percent airflow below nominal unit size selected. Adjust selection options are provided to adjust airflow supplied to

meet individual installalion needs for such things as noise, comfort, and humidity removal. (See Fig. 17, D _ indicated.)

E. ON/OFF DELAY - Select desired time delay profile

Four motor operation delay profiles are provided to customize and enhance system operation. (See Fig. 17, Eas indicated)

Selection options are:

1. The standard 90 sec off delay (Factory setting) at 100 percent airflow.

2. No delay option used for servicing unit or when athermostat is utilized to perform delay functions.

3. A 30 sec on delay with no airflow/90 sec off delay at 100 percent airflow profile is used when it is desirable to allow system ceils time

to heat-up/cool-down in conjunction with the airflow.

4, ENH, enhanced selection, provides a 30 sec on delay with no airflow/plus 150 sec at 70 percent airflow/no off delay for added cemfort.

This profile will minimize cold blow in heat pump operation and could enhance system efficiency,

F. CONTINUOUS FAN -Select desired fan speed when thermostat is set on continuous fan

---> NOTE: If installed with a 2-speed outdoor unit, do not select HI speed continuous fan. If HI is selected, low speed compression will also run HI

speed possibly resulting in insufficient dehumidification.

1, LO speed - factory setting, 50 percent cooling mode airflow.

2. IVIEDspeed - move connector to IVIED, 65 percent cooling mode airflow.

3. HI speed - move connector of HI, 100 percent cooling mode airflow. (See Fig. 17, F as indicated,)

G. Low-Voltage Circuit Fusing and Reference

The low-voltage circuit is fused by aboard-mounted 5-amp automotive fuse placed in series with the transformer SEC2 and the R circuit. The C

circuit of the transformer is referenced to chassis ground through a printed circuit run at SECI connected to metal standoff marked with ground

symbol.

H. Basic Fan Ceil Configuration

The following basic cenfiguratlon of the fan coil will provide ARI rated performance of the heat pump:

1. AUX HEAT KW/CFM - Select the heater range for the size electric heater installed.

2. AC/HP SIZE - Select system size installed.

--12--

ELECTRIC HEAT CONNECTOR

A.95275

Fig. 18--PCB Wiring Arrangement

3. SYSTEM TYPE -Select system type HP-EFF.

4. AC/HP CFM ADJUST -SeIect NOM.

5. ON/OFF DELAY - Select 0/90 profile.

6. CONTINUOUS FAN - Select desired fan speed when thermostat is set to continuous fan.

I. COMFORT OPTIONS-Perfect Heat Plus/Super Comfort Heat and Superdehumidify (See Fig. 20 for Quick Reference Guide)

Perfect Heal Pins/Super Comfort Heat and Superdehumidify options arepossible when the FK4C Fan Coil is installed with an outdoor temperature

sensor, a Thermidistat TM Control, Zone Perfect Plus, or Comfort Zone II.

NOTE: The FK4C Fan Coil provides better than average humidity control and heated air temperature. This configuration will improve the comfort

provided by the heat pump system if more humidity removal or if warmer heating air is desired. While providing this improved comfort, the heat

pump system will operate efficiently, but not at the published HSPF or ARI SEER efficiency.

The following fan coil configuration is recommended for maximum heating and cooling/dehumidifying comfort: (See Fig. 17.)

1. AUX HEAT KW/CFM - Select narrowcst heater range to match size of electric heater installed (skip this step if no heater is installed).

2. AC/HP SIZE - Select system size installed.

3. SYSTEM TYPE - Select system type HP-COMFORT (for heat pump system) or AC (for air conditioner system).

4. AC/I-IP CFM ADJUST - Select LO.

5, ON/OFF DELAy - Select ENH profile.

6. CONTINUOUS FAN - Select desired fan speed when thermostat is set to continuous fan.

7. If the fan coil is installed with Intelligent Heat Staging capable eleclric heaters, remove jumper J2. (See Fig. 17.)

NOTE: If €onfigm_g to run warmer heating, do not remove jumper J2 when using 5-, 8-, or 10-kw heaters.

8 Remove jmnper J1 to activate dehumidify modes.

--13---

FAN COIL SIZE CFM RANGE

FK4CNF001, 002 450-1275

FK4CNF003 525-1475

FK4C_ 550-1700

FK4CNB_6 550-2150

Table 2--CFM Range for FK4C Units

SYSTEM SIZES

018, 024, 030, 036

024, 030, 036, 042

030,036, 042, 048

036, 042, 048. 060

9. Wire low voltage connections as shown in Fig, 9, 10, 11, or 12.

10. Configure Tbermidistat (or capable zoning system) following its installation instructions for Super Dehumidify operation.

This configuration provides the following comfort enhancements:

a. A 30 second blower on delay with 150 seconds at 70 percent airflow to allow the indoor coil to warm up or cool down before the blower

is asked to deliver 100 percent airflow reducing the cold blow sensation at start upin beating and allowing die indoor coil to more quickly

reach wet coil operating conditions in cooling.

b. No blower off delay eliminates cold blow which may be associated with running the blower after shut down of the compressor and avoids

re-evaporation of condensed moisture after cooling/dehumidifying operation.

c. Lower airflow while the compressor is running to reduce draft effects and increase heating air temperature and improved humidity control

during eoohng operation.

d. Intelligent Staging of the electric heater elements to more closely match heating load requirements and provide more consistent heating

air temperatures.

PROCEDURE 9_ACCESSORY INSTALLATION

A. Accessory Electric Heaters

Electric heaters may be installed with the FK4C Fan Coil per instructions supplied with electric heater package. See unit rating plate for

factory-approved electric heater kits.

NOTE: Units installed without electric heat should have a field-supplied sheet metal block-off plate covering the heater opening. This reduces

air leakage and formation of exterior condensation.

B. Auxiliary Terminals

The AUX and HUM terminals on the Easy Select Board are tied directly to the G terminal, and provide a 24-vac signal whenever the G terminal

is energized. (See Fig. 17 and 18.) During Perfect Heat Plus/Super Comfort Heat and Superdehumidify modes, the G signal is not present and the

auxiliary terminals are not energized. If the installation includes the use of one of these operating modes, do not use these terminals to control

accessories. See Electronic Air Cleaner and Humidifier sections for further information.

C. Electronic Air Cleaner Connections

The AUX1 and AUX2 terminals are not always energized during blower operation, as described above. When using an electronic air cleaner with

the FK4C Fan Coil, use Airflow Sensor Part No. KEAAC0101AAA. The airflow sensor turns on electronic air cleaner when the fan coil blower

is operating.

D. Humidifier/Humidictst Connections

The HUM1 and HUM2 terminals are not always energized during blower operation, as described under Auxiliary Terminals section. To ensure

humidifier will operate properly, use HUM output of Thermidistat Control, Zone Perfect Plus, or Comfort Zone II to control humidifier operation.

Alternatively, the 24-vac signal can be sourced from the W and C terminal block connections when electric heaters are used as the primary heating

source, or if another humidistat is desired to control the humidifier. (See Fig. 9, 10, 11, and 12.)

E. Dehumidify Capability with Standard Humidictst Connection

Latent capacities for systems using the FK4C Fan Coil are better than average systems. If increased latent capacity is an application requirement,

the field wiring terminal block provides connection terminals for use of a standard humidistat. The FK4C Fan Coil will detect the humidistnt

contacts opening on increasing humidity and reduce its airflow to approximately 80 percent of nominal cooling mode airflow. This reduction will

increase the system latent capacity until the humidity falls to a level which causes the humidistat to close its contacts. When the contacts close,

the airflow will return to 100 percent of die selected cooling airflow. To activate this mode, remove Jumper Jl and wire in a standard humidistaL

F. Dehumidify and Super Dehumidify Capabilities

This model fan coil is capable of responding to a signal from indoor system control (thermostat, Thermidistat, zoning control) to operate in comfort

control modes such as Super Dehumidify Mode. Consult literature provided with indoor system control to determine if these operating modes are

available, and to see control set up instructions, No special setup or wiring of fan coil is required.

PROCEDURE IO--FK4C FAN COIL SEQUENCE OF OPERATION

The FK4C will supply airflow in a range which is more than twice the range of a standard fan coil. It is designed to provide nominal cooling

capacities at a 50°F evaporator temperature and the required airflow which enables it to match with 4 air conditioner or heat pump system sizes.

Table 2 outlines the CFM range for the different FK4C Fan Coil sizes.

A. Continuous Fan

*Thermostat closes circuit Rto G.

• The blower runs at cominuonsfan airflow.

B. Cooling Mode - Single speed or 2-Spead High

•If indoor temperature is above temperature set point and humidity is below humidity set point, thermostat cioses circuits R to G, R to Y/Y2

and R to O.

The fan coil delivers single speed cooling airflow.

--14---

UNIT

SIZE

002

0O3

005

006

OUTDOOR

UNIT

CAPACITY

018

024

030

036

024

030

036

042

030

036

042

048

036

042

048

060

Table 3--FK4C Fan Coil Airflow Delivery (CFM) in Cooling Mode

Single-Speed

Application

Nominal A/C

A/C Cooling

Cooling Dehumidity

525 420

700 560

875 700

1050 840

700 560

875 700

1050 840

1225 980

875 700

1050 840

1225 980

1400 1120

1050 840

1225 980

1400 1120

1750 1400

OPERATING MODE

Two-Speed

Application

High Speed

Nomina/ A/C

AJC Cooling

Cooling Dehumidity

11O0 880

1100 880

1470 1175

11(30 880

t 470 1175

1835 1470

NOTE

t, The above airflows result with the AC/HP CFM ADJUST Select jumper set o_ NOM.

Low Speed

Nominal A/C

A]C Cooling

Cooling Dehumidity

680 545

910 725

745 595

995 795

1240 995

FAN ONLY

LO/MED/Hi

350/350/525

350/455/700

440/570/875

525/680/1050

415/455/700

440/570/875

525/680/1050

610/795/1225

440/570/875

525/680/1050

610/795/1225

700/910/1400

525/745/1050

610/870/1225

700/995/1400

875/1240/1750

2. Airlt(y,vcan be adjusted +15 percent or -10 percent by seMctir_ HI or LO respectivM¥ for alt modes except _n _':/¥.

3. Dry coil at 230 volts and with 10kw heater and filter installed.

4. AiHtows shown are at standard air conditions.

•Thermostat closes circuits R to G, Rto YI, R to Y2 and R to O.

The fan coil delivers 2-speed high cooling airflow.

C. Cooling mode - 2-Speed Low

If indoor temperature is above temperature set point and humidity is below humidity set point, thermostat closes circuits R to G, R to YI and R

to O.

The fan coil delivers 2-speed low cooling airflow.

D. Cooling Mode - Dehumidification

If indoor temperature is above temperature set point and humidity is above humidity set point, thermostat or Thermidistat TM closes circuits R

to G, R to O, and R to Y/Y2, and humidistat or Themfidistat opens R to DH.

•The fan coil delivers airflow which is approximately 80 percent of the nominal cooling airflow to increase the latent capacity of the system.

E. Cooling Mode -Superdehumidify Operation (See Fig. 20 for Quick Reference Guide)

NOTE: The indoor control used, such as Thermidistat,must be capable of providing Super Dehumidify opemadonmode and control must be

configured as outlined in its installation insU'ucdons.Consult indoor control literature to determine if control is capable of providing Super

Dehumidify inputs and for configuration instructions.

If the indoor temperature is helow the temperature set point and the humidity is above the humidity set point, the Thermidistat closes circuit R

to O, opens circuits R to DH and R to G, and cycles circuit R to Y/Y2 (for single speed system R to Y1, or R to YI and Y/Y2 for 2-spoed system).

The ICM2 motor reads the G signal to the fan coil while the heat pump is operating, (circuit R to Y/Y2 for single speed system, Rto YI or R

to Y 1 and Y/Y2 for 2-speed system), closed (24 vac). If circuit Rto G is closed (24 vat), the motor will deliver airflow at the f_ll cooling or cooling

plus dehumidify mode requested value. If circuit Rto G is open (0 vac) for super dehumidify mode, the motor delivers reduced airflow to maximize

the humidity removal of the system while minimizing overcooling.

F. Electric Heat Heating Mode

•Thermostat closes circuit Rto W/W1, or W2.

•The fan coil delivers the selected electric heat airflow.

G. Heat Pump Heating Mode - Single speed or 2-Speed High

• Thermostat closes circuits Rto G and R to Y/Y2.

The fan coil delivers single speed heat pump heating airflow.

•Thermostat closes circuits Rto G, Rto Y1 and R to Y/Y2.

The fan co:tl delivers 2-speed high heat pump healing airflow.

H. Heat Pump Heating Mode -2-Speed Low

• Thermostat closes circuits R to G and R to Y l.

The fan coll delivers 2?speed heat pump heating low airflow.

I. Heat Pump Heating with Auxiliary Electric Heat

Thermostat closes circuits R to G, Rto Y/Y2 and/or R to YI with R to W/WI or W2 (and R to O in the case of defrost).

In the event that electric heating is called for by the thermostat while the heat pump is also operating in either heating or defrost modes, the motor

will modify its airflow output, if necessary, to provide an airflow which is defined as safe for the operation of the electric heaterduring heat pump

operation. That airflow is the greater of the heat pump heating airflow and the electric heater ohiy ainqow.

--15--

Table 4---FK4C Fan Coil Airflow Delivery (CFM) in Heat Pump Only Heating Mode

UNIT

SIZE

002

OO3

005

OO6

OUTDOOR

UNIT

CAPACITY

018

024

030

036

024

030

036

042

O30

036

042

048

036

042

048

000

Single-Speed

Application

Heat Pump Heat Pump

Comfort Efficiency

470 525

630 700

785 875

945 1050

630 700

785 875

945 1050

1100 1225

785 875

945 1050

1100 1225

1260 1400

945 1050

1100 1225

1260 1400

1575 1750

OPERATING MODE

Two-Speed

Application

High Speed

Heat Pump Heat Pump

Comfort Efficiency

990 1100

1320 1470

990 1100

1325 1470

1655 1835

Low Speed

Heat Pump Heat Pump

Comfort Efficiency

615 680

820 910

670 745

895 995

1120 1240

NOTE

1, The above airflows result with the AC/HP CFM ADJUST select jumper set on NOM.

2. Airflow can be ad usted +15 percent or -10 percent by Selecting HI or LO respectively for all modes except fan only.

3. Dry coil at 230 volts and with lOkw heater and filter ns a led.

4. Airflows shown are at standard air conditions,

FAN ONLY

LO/MED/H][

350/350/470

350/410/630

440/510/785

525/615/945

415/415/630

440/510/785

525/615/945

610/715/1100

440/5 i0/785

525/615/945

610/715/1100

700/820/1260

525/670/945

610/780/1100

700/895/1260

875/1120/1575

Table 5--FK4C Airflow Delivery (CFM)

OUTDOOR ELECTRIC HEATER KW RANGE

FAN UNIT

UNIT 0-5 0-10 0-15 0-20

CAPACITY

SIZE BTUH LO NOM HI LO NOM HI LO NOM H1 LO NOM HI

18,000 625 625 625 675 675 675 * * * * * *

001 24,000 650 725 835 * 725 835 875 875 875 * *

002 30,000 815 905 1040 * 905 1040 900 900 1040 11(30 1100 1100

36,000 980 1085 1250 980 1085 1250 980 1085 1250 1100 1100 1250

24,000 675 725 835 875 875 * * * * * * *

30,000 815 905 1040 875 905 1040 1100 1100 1100 ***

003 36.000 980 1085 1250 980 1085 1250 1100 1100 1250 1225 1225 1250

42,000 1140 1270 1460 1140 1270 1460 1140 1270 1460 1225 1270 1460

O_R ELECTRIC HEATER KW RANGE

FAN UNIT

UNIT 0-10 0-15 0-20 0-30

CAPACITY

SIZE BTUH LO NOM HI LO NOM HI LO NOM HI LO NOM HI

30,000 975 975 1040 1100 1100 1100 * * * * * *

36,000 980 1085 1250 1100 1100 1250 1250 1250 1250 * * *

005 42,000 1140 1270 1460 1140 1270 1460 1250 1270 1460 1500 1500 1500

48,000 1305; 1450 1665 1305 1450 1665 1305 1450 1665 1500 1500 1665

36,000 ll00 1100 1250 1350 1350 1350 * * * * **

42,000 1140 1270 1460 1350 1350 1460 1525 1525 1525 * * *

006 48,000 1305 1450 1665 1350 1450 1665 1525 1525 1665 1750 1750 1750

60,000 1630 1810 2085 1630 1810 2085 1630 1810 2085 1750 1810 2085

• Airflow not recommended for heater/syst_temsize.

NOTE: LO, NOM, and HI refer to AC/HP CFM ADJUST selec_on.

d. Heat Pump Heating with Thermidistat TM Control, Zone Perfect Plus, or Comfort Zone II (See Fig. 20 for Quick Reference

Guide)

NOTE: The indoor control used, such as a Thermidistat, must be capable of providing wanner heating operation mode and control must be

configured as outlined in its installation instructions. The system must be installed with appropriate outdoor temperature sensor. Consult indoor

control literature to determine if control is capable of providing warmer beating control outputs and for configuration instructions. Consult indoor

control and sensor insmmtions for installation and configuration details.

If the outdoor temperature is in the range of 10°to ,tO*F, the Thermidistat closes circuit Rto Y/Y2 (for single speed system R to YI, or R to Y1

and Y/Y2 for 2-speed system) and opens circuit R to G.

The ICM2 motor reads the G signal to the fan coil. If circuit R to G is closed (24 vac), the motor will deliver airflow at the full heating requested

value. If circuit Rto G is open (0 vac) for maximum beating comfort, the motordelivers reduced airflow to maximize the temperature and minimize

the draft effect of the heated air leaving the fan coil.

--16--

FAN

COIL

UNIT

OOl

OO2

OO3

OO5

OO6

Table 6---FK4C Minimum CFM for Electric Heater Application

HEAT PUMP

UNIT

SIZE

Heater Only

018

024

030

036

Heater Only

024

030

036

042

Heater Only

030

036

042

048

Heater Only

036

042

048

060

625

650

8O0

970

675

80O

975

1125

675

800

975

1125

1305

1050

1100

1125

1300

1625

8, 9, 10

625

725

875

970

700

875

975

1125

700

875

975

1125

1305

1050

1100

1125

1300

1625

NOTES:

1. Healer Orfly-Air ccnd_ioner with etecttfc healer application.

2. These airflows are minimum acceptable airflows as UL listed. Actual airflow delivered will

CFM

H_ATER SIZE KW

725

875

970

1050

Iloo

1100

1125

1050

1100

I100

1125

1305

1050

1350

1625

18. 20

875

1040

1050

1225

1050

1225

1305

1050

1350

1465

1750

be per airflow de_ive_ chad for Electdc Heating Modes.

PROCEDURE 11--TROUBLESHOOTING ICM MOTOR AND CONTROLS

24, 30

1400

1750

z_x CAUTION: High voltage is always present at motor. Disconnect power to unit before removing or replacing

connectors or servicing motor. Wait at least 5 min after disconnecting power before opening motor.

The ICM motor used with this product contains two par_: the control module and motor winding section. Do not assume the motor or module

is defective if it will not start. Go through the steps described below before replacing control module, Easy Select Board or entire motor. The

control module is available as a replacement part.

A. If motor turns slowly:

1. Replace panel. Motor may appear to run slowly if access panel is removed.

2. It is normal operation to run noticeably slower if G terminal is not energized in cooling or heat-pump modes.

B. If motor does not run:

Turn off power and check the following:

1. Check 5 amp fuse on Easy Select Board.

2. Check for 24vac on SEC1 and SEC2. If no voltage is present, check transformer.

3. Check all plugs and receptacles for any deformation which could cause loose connections. Be sure plugs are fully seated.

4. Verify that approximately 230vac is present at motor.

5. Verify low-voltage control signals to motor. The motor receives its control signals through the 12-pin plug (PL-1) on Easy Select Board

and 16-pin plug on wiring harness. (See Troubleshooting Example.) The combinations of pins energized will determine motor speed. (See

Fig, 19,) See Table 7for circuit board, low-voltage screw terminals energized _md for voltage present at each pin on 12-pin plug (PL-1).

See Table 7 for pin number on 16-pin plug which should have voltage when Easy Select Board screw terminals have 24vat.

C. Use following procedure to check control signals:

THERMOSTAT

1. Remove all thermostat wires from Easy Select Board.

2. Jumper screw terminals (1 at a time): R-G, R-Y/Y2, R-YI, R-WI. If motor runs in all cases, thermostat is miswired, configured incorrectly

or defective. If motor runs in some cases, but not others, condnue to check wiring harness and circuit board.

WIRING HARNESS

I. Shut off power to unit; wait 5 mitt.

2. Remove 5-pin plug from motor.

3. Remove 16-pin from motor.

--17--

PIN 12

J1 JUMPER - PULL FOR

HEAT STAGING

AC_p CFM ADJUST

ONIOFF DELAY

HEATEFUMOTOR

12-PINCONNECTOR

(PL-1)

iLOW VOLTAGE SCREW TERMINALS

-- DEHUMIDIFICATION INPUT

-- 24 VAC HOT

-- AUXILARY HEAT STAGE 1

-- AUXILIARY HEAT STAGE 2

-- LOW SPEED COMPRESSOR

-- SINGLE OR HI SPEED COMPRESSOR

-- FAN

-- REVERSING VALVE

-- COMMON

PIN 1 16-PIN PLUG

A00114

Fig. 19_Control Signals (Easy Select Board & 16-Pin Plug)

4. Replace 5-pin plug and turn power on.

5. Check for appropriate voltages on 16-pin connector with screw terminals jumpored. (See Table 7 for values and see examples below.)

If signals check correctly and motor does not run, inspect wiring harness for loose pins or damaged plastic that could cause poor connections. If

connections are good, either control module or motor is defective. If proper signals are not presenL check circuit board using procedure below:

12-PIN PLUG (PL-1) ON EASY SELECT BOARD

1. Unplug harness from board.

2. Check for appropriate voltages on pins with Easy Select Board screw terminals juml_red, (See Table 7 for values and see example below.)

If proper signals are not present, replace Easy Select Board, If present at beard and not at 16-pin connector, wiring harness is defective.

TROUBLESHOOTING EXAMPLE:

Motor is not running on a call for heat-pump heating. System is asingle-speed beat pump.

1. After performing checks in Thermostat section, follow steps 1thru 5 in Wiring Harness section. Then proceed with example.

2. With all thermostat wires removed from Easy Select Board, place a jumper wire between R and Y/Y2 low-voltage screw terminals on the

Easy Select board.

3. Check Table 7 for pin number on 16-pin connector associated with the Y/Y2 signal. The correct pin is #14. The far right column shows

that (-) 12vdc should be present between pin #14 and pin #1 (common) on the 16-pin connector.

4. Set meter to read DC voltage. Place meter between pins #1 and #14 and check for (-) 12vdc (common side of meter on pin #1). If signal

is presenL the problem is in the module or motor. If signal is noL problem is either in wiring harness or Easy Select Board.

These steps can be repeated for other modes of operation.

To check Easy Select Board:

1. Leave jumper wire in place between R and Y/Y2.

2. Check Table 7 under "Wiring Harness Connection to Easy Select Board" column and row for pin #14 to see pin# on Easy Select Board

that should have voltage. The correct pin is #2. The column on far right will show voltage that should be present between pin #2 and #9

(or #10 common).

3. Place meter between pins #2 and #9 on Easy Select Board and check for (-) 12vde.

4. If voltage is presenL the wiring harness is bad; if noL the Easy Select Board is bad,

O. Vedfy Motor Winding Section:

Before proceeding with module replacemenL check the following to ensure motor winding section is functional. With control module removed

and unplugged from winding section:

1. The resistance between any 2 motor leads should be similar.

--18--

Table 7_Wiring Connections of FK Fan Coil Wiring Harness

16-1N PLUG ON WIRING HARNESS TO MOTOR WIRING HARNESS CONNECTION TO EASY SELECT BOARD

Pin # on 16-Pin Plug Description

ICommon

2 Wl

3Common

4 On/Off Delay Selection

5AC/HP Size Selection

6YI

7AC/HP CFM Adjust

Selection

8No€ Used

9 System Type Selection

10 Dehumidify

Aux Heat Size

11 Selection

12 24v AC

13 W2

14 Y/Y2

15 G

16 Not Used

*Check voltageswith16-Pin P_ugdi_onnected frommotor.

** _ese signalswillstartmotor,

Si_aal on pin with

Screw Tcrrainal

Jumpe_ed to R*

Pin 3 on 12-Pin Plug Wire Color

or get-up Selection

Pin 9 on PL-I Brown

Pin 7 on PL-I Violet

Pin 10 on PL-I Orange

On/OFF Delay Selection White

AC/HP Size Selection Blue

Pin 3on PL-I Black

AC/HP CFM Adjust Black

Selection

N/A Not: Used

System Type Selection Orange

Pin 12 on PL-I Gray

Aux Heat Size Violet

Selection

Pin 8 on PL-I Red

Pin 4 on PL-1 White

Pin 2 on PL-I Yellow

Pin l on PL-1 Green

N/A Not Used

Auxiliary Heat Stage l24VAC**

Low Speed AC or liP (-) 12VI)C**

0V (24VAC on no call)

24VAC continuous

Auxiliary Heat Stage 2 24VAC**

Single Speexl AC or

HP, High Speed (-) 12VDC**

2-Speed AC or HP

Fan 24VAC**

2. The resistance between any motor lead and the unpainted motor end plate should be greater than 100K ohms.

If motor winding section fails one of these tests, it is defective arid must be replaced.

START-UP PROCEDURES

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

CARE AND MAINTENANCE

For continuing high performance, and to minimize possible equipment failure, it is essential that periodic maintenance be performed on this

equipment. The only required maintenance that may be performed by the consumer is filter maintenance.

/h WARNING: Disconnect all power to unit before servicing field wires or removing control package. The disconnect

(when used) on access panel does not disconnect power to the line side of disconnect, but does allow safe service to all

other parts of unit. If unit does not have a disconnect, disregard the foregoing. Instead, make sure that a disconnecting

means is within sight from, and is readily accessible from, the uniL Disconnect all electrical power to unit before performing

any maintenance or service on it. A failure to follow this warning can cause electrical shock, fire, personal injury, or death.

The minimum maintenancerequirements for this equipmentare as follows:

1. Inspectand clean or replace air filter each month or as required.

2. Inspect cooling coil, drain pan, and condensate drain each cooling seasonfor cleanliness. Clean as necessary. An inspectionport is provided

on all A-coil delta plates. Remove plastic plug to inspect.

3. Inspect blower motor and wheel for cleanliness each beating and cooling season. Clean as necessary.

4. Inspectelectrical connections for tightnessand controls for proper operationeach heating and cooling season. Service as necessary.

Consult Fan Coil Service Manual available from equipment distributor for maintenance procedures.

WARNING: As with any mechanical equipment, personal injury can result from sharp metal edges, etc, therefore, care

should be taken when removing parts.

Using the Owner's/User Manual furnished in outdoor unit, the installing technician should explain system operation to the consumer with particular

emphasis on indoor fan coil operation sounds and filter maintenance.

--19---

LOW VOLTAGE TERMINAL

SECI SEC2

C:3 C_

EASY SELECT TM

AUX HEAT KW/CFM

HEA_R/MOTOR

MOLEX 12-PIN CONNECTOR

I. Configuration Taps

(See Installation |nstmetions, for detailed description.)

A. AUX HEAT - Set for heater size (Ex: 0-10 for 10 kw)

B. AC/HP SIZE - Set for size of outdoor unit

C. SYSTEM TYPE - Select "lip COMFORT"

D, AC/HP CFM ADJUST - Select "LO"

E. ON/OFF DELAY - Select "ENH"

F. CONTINUOUS FAN -Select desired speed

2. Install heater with Intelligent Heat Staging, and remove

Jumper J2, except when using 5-, 8-, or 10-kw heater,

3. Remove Jumper J 1 to activate all dehumidify modes.

4. Complete wiring and install outdoor temperature sensor

according to Installation Instructions.

I. Set "DIP Switches" -Set the dip switches (back of Thermidistat

Control Board) appropriately for specific system being installed.

2. Thermidistat Control Configurations

(See Thermidistat TM Control Installation Instructions for

detailed description,)

• Option 5 (Variable Speed Motors) - set to ON

•Option 7 (Super Dehumidify) - set to ON

• Option 9 (Intelligent Heat) - set to ON if installing with

a single speed heat pump

• Option 12 (Heaters during Defrost) - setting "2" is

suggested for all heaters

•Option 16 - On R-22 systems set to ON for warmer heat

below 40° F. For Puron applications, set to OFF.

• Option 17 -Select programmable or non-progrmnmable mode.

3. Set desired humidity level on front of Thermidistat

(50 to 55% RH recommended). For dehumidification in /

cooling, both "dhu" and "cool" must be displayed. J

A98510

Fig. 20_Set-Up Instructions for Warmer Heating Temperatures and Super Humidity Control in Cooling

0_ CACdI_' 7310 W. Mor_s St., I_m, apo/_s, IN 46231 imfk4c08 --20-- Bootq'rab: 1/4,3d/2e Catalog No. 63FK-4C4

CARRIER Air Handler (indoor Blower&evap) Manual L0210318

Navigation menu

Versions of this User Manual:

Views

Navigation