Carrier 40FKA Installation Instructions Manual Download

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

electric heater installed.

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

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

4. AC/HP CFM ADJUST - Select NOM.

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

6. CONTINUOUS FAN - Select desired fan speed when ther-

mostat is set to continuous fan.

COMFORT OPTIONS -SUPER COMFORT HEAT AND SUPER
DEHUMIDIFY MODES

Super Comfort Heat and Super Dehumidify options are possible
when the 40FKA Fan Coil is installed with an outdoor temperature
sensor and the factory supplied Thermidistat™ Control (Super
Comfort Heat only; Super Dehumidify does not require an outdoor
temperature sensor). The following fan coil configuration is
recommended for maximum heating and cooling/dehumidifying
comfort.

NOTE:

The 40FKA Fan Coil provides better than average hu-

midity control and heated air temperature. This configuration will
improve the comfort provided by the heat pump system if more

Table 2—40FKA Fan Coil Airflow Delivery (CFM) in Cooling Mode

UNIT

SIZE

OUTDOOR

UNIT

CAPACITY

OPERATING MODE

FAN ONLY
LO/MED/HI

Single-Speed

Application

Two-Speed

Application

High Speed

Low Speed

Nominal

A/C

Cooling

A/C

Cooling

Dehumidity

Nominal

A/C

Cooling

A/C

Cooling

Dehumidity

Nominal

A/C

Cooling

A/C

Cooling

Dehumidity

002

018
024
030
036

525
700
875

1050

420
560
700
840

—
—
—

1100

—
—
—

880

—
—
—

680

—
—
—

545

350/350/525
350/455/700
440/570/875

525/680/1050

003

024
030
036
042

700
875

1050
1225

560
700
840
980

—
—

1100

—

—
—

880

—

—
—

680

—

—
—

545

—

415/455/700
440/570/875

525/680/1050
610/795/1225

005

030
036
042
048

875

1050
1225
1400

700
840
980

1120

—

1100

—

1470

—

880

—

1175

—

680

—

910

—

545

—

725

440/570/875

525/680/1050
610/795/1225
700/910/1400

006

036
042
048
060

1050
1225
1400
1750

840
980

1120
1400

1100

—

1470
1835

880

—

1175
1470

745

—

995

1240

595

—

795
995

525/745/1050
610/870/1225
700/995/1400

875/1240/1750

NOTE
1. The above airflows result with the AC/HP CFM ADJUST select jumper set on NOM.
2. Airflow can be ad15 percent or -10 percent by selecting HI or LO respectively for all modes except fan only.
3. Dry coil at 230 volts and with 10kw heater and filter installed.
4. Airflows shown are at standard air conditions.

Table 3—40FKA Fan Coil Airflow Delivery (CFM) in Heat Pump Only Heating Mode

UNIT

SIZE

OUTDOOR

UNIT

CAPACITY

OPERATING MODE

FAN ONLY
LO/MED/HI

Single-Speed

Application

Two-Speed

Application

High Speed

Low Speed

Heat Pump

Comfort

Heat Pump

Efficiency

Heat Pump

Comfort

Heat Pump

Efficiency

Heat Pump

Comfort

Heat Pump

Efficiency

002

018
024
030
036

470
630
785
945

525
700
875

1050

—
—
—

990

—
—
—

1100

—
—
—

615

—
—
—

680

350/350/470
350/410/630
440/510/785
525/615/945

003

024
030
036
042

630
785
945

1100

700
875

1050
1225

—
—

990

—

—
—

1100

—

—
—

615

—

—
—

680

—

415/415/630
440/510/785
525/615/945

610/715/1100

005

030
036
042
048

785
945

1100
1260

875

1050
1225
1400

—

990

—

1320

—

1100

—

1470

—

615

—

820

—

680

—

910

440/510/785
525/615/945

610/715/1100
700/820/1260

006

036
042
048
060

945

1100
1260
1575

1050
1225
1400
1750

990

—

1325
1655

1100

—

1470
1835

670

—

895

1120

745

—

995

1240

525/670/945

610/780/1100
700/895/1260

875/1120/1575

Summary of Contents for 40FKA

Page 1: ...sult local building codes and National Electrical Code NEC for special require ments Recognize safety information This is the safety alert symbol 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 seriou...

Page 2: ...on of a secondary drain pan under entire unit to avoid damage to ceiling is recommended 40FKA Fan Coils can be installed for upflow and horizontal left applications as factory shipped See Fig 2 4 and 8 Units can be installed for horizontal right applications with field modifications See Fig 5 Units may be converted for downflow applications using factory authorized accessory kit NOTE To ensure pro...

Page 3: ...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 a Remove air seal assembly from coil by removing 4 screws See Fig 6 b Remove air splitter B from coil seal assembly by remov ing 3 screws See Fig 6 factory shipped inset c Remove filler plate A and install air splitter B in place of filler plate d Install fill...

Page 4: ... 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 Fig 4 Slope Coil in Horizontal Left Application Factory Ready A00096 UNIT FIELD SUPPLIED HANGING STRAPS LOW VOLT ENTRY OPTIONS POWER ENTRY OPTIONS SECONDARY DRAIN 002 005 21 IN 006 24 IN FRONT SERVICE CLEARANCE FULL ...

Page 5: ...nconditioned 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 insula tion lining As an alternative fibrous ductwork may be used if constructed and installed in accordance with the latest edition of SMACNA construction standard on fibrous ...

Page 6: ...rating plate Be sure that electrical service provided by the utility is sufficient to handle the additional load imposed by this equipment 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 su...

Page 7: ...HEAT STAGE 1 COOL STAGE 1 FAN 24 VAC HOT 24 VAC COMM DEHUMIDIFY HUMIDIFY N A OUTDOOR SENSOR CONNECTION Y Y2 HUMIDIFIER 24 VAC OUTDOOR SENSOR REMOVE J2 JUMPER FOR HEAT STAGING REMOVE J1 JUMPER FOR DEHUMIDIFY MODES Fig 10 40FKA Fan Coil Wiring with 2 Speed Air Conditioner A98233 O W2 W W1 Y1 W2 G R W2 W1 INDOOR CONTROL 40FKA FAN COIL 2 SPEED AIR CONDITIONER Y1 G C Y2 R Y1 C DHUM HUM B S1 S2 Y Y2 R O...

Page 8: ...o 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 first 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 with Sil...

Page 9: ...of heaters for which airflow also marked is approved For increased comfort select the narrowest 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 4 and 5 for airflow delivery and minimum CFM Note that airflow marked is the ai...

Page 10: ...peed factory setting 50 percent cooling mode airflow 2 MED speed move connector to MED 65 percent cooling mode airflow 3 HI speed move connector of HI 100 percent cooling mode airflow See Fig 19 F as indicated LOW VOLTAGE CIRCUIT FUSING AND REFERENCE The low voltage circuit is fused by a board mounted 5 amp automotive fuse placed in series with the transformer SEC2 and the R circuit The C circuit ...

Page 11: ...00 1470 880 1175 680 910 545 725 440 570 875 525 680 1050 610 795 1225 700 910 1400 006 036 042 048 060 1050 1225 1400 1750 840 980 1120 1400 1100 1470 1835 880 1175 1470 745 995 1240 595 795 995 525 745 1050 610 870 1225 700 995 1400 875 1240 1750 NOTE 1 The above airflows result with the AC HP CFM ADJUST select jumper set on NOM 2 Airflow can be adjusted 15 percent or 10 percent by selecting HI ...

Page 12: ...HEATER KW RANGE 0 10 0 15 0 20 0 30 LO NOM HI LO NOM HI LO NOM HI LO NOM HI 005 30 000 975 975 1040 1100 1100 1100 36 000 980 1085 1250 1100 1100 1250 1250 1250 1250 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 006 36 000 1100 1100 1250 1350 1350 1350 42 000 1140 1270 1460 1350 1350 1460 1525 1525 1525 48 000 ...

Page 13: ...e fan coil blower is operating HUMIDIFIER 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 during Super Comfort Heat mode use HUM output of Thermidistat Control or Comfort Zone II to control humidifier operation Alternatively the 24 vac signal can be sourced from the W ...

Page 14: ... 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 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 I...

Page 15: ... 20 875 0 10 725 0 90 30 90 0 0 0 5 625 TM J2 JUMPER PULL FOR HEAT STAGING 12 PIN CONNECTOR PL 1 PIN 1 PIN 12 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 16 PIN PLUG 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 J1 JUMPER PULL FOR DEHUMIDIFICATION CONTROL LOW VOLTAGE SCREW TERMINALS Table 7 Wi...

Page 16: ... for maintenance procedures 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 con sumer with particular emphasis on indoor fan coil operation sounds and filter maintenance Fig 19 40FKA Printe...

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