International Comfort Products FEM4X1800A1, WAHM184A2, WAHT184A2, FEM4X2400A1, WAHM244A2 User Manual

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TECHNICAL SUPPORT MANUAL

Fan Coils

FEM4X, WAHM**4, WAHT**4

Safety Labeling and Signal Words

DANGER, WARNING, CAUTION, and NOTE

The signal words DANGER, WARNING, CAUTION, and NOTE are used to identify levels of hazard seriousness. The signal word DANGER is only used on product labels to signify an immediate hazard. The signal words WARNING, CAUTION, and NOTE will be used on product labels and throughout this manual and other manuals that may apply to the product.

DANGER − Immediate hazards which will result in severe personal injury or death.

WARNING − Hazards or unsafe practices which could result in severe personal injury or death.

CAUTION − Hazards or unsafe practices which may

result in minor personal injury or product or property damage.

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

Signal Words in Manuals

The signal word WARNING is used throughout this manual in the following manner:

The signal word CAUTION is used throughout this manual in the following manner:

Signal Words on Product Labeling

Signal words are used in combination with colors and/or pictures on product labels.

WARNING

CAUTION

TABLE OF CONTENTS

Model Number Identification 2 − 3..................

Wiring Diagram 4 − 5.............................

Performance Data 6 − 8...........................

Parts Drawing FEM4X1800−4800 9 − 12............

Parts List FEM4X1800−4800 13 − 16................

Parts Drawing FEM4X3500 17 − 19.................

Parts List FEM4X3500 20.........................

Parts Drawing FEM4X6000 21 − 25.................

Parts List FEM4X6000 26.........................

Parts Drawing WAHM, WAHT 27 − 30...............

Parts List WAHM, WAHT 31 − 36...................

ELECTRICAL SHOCK HAZARD

Failure to turn off electric power could result in personal injury or death.

Before installing or servicing system, turn off main power to the system. There may be more than one disconnect switch, including accessory heater(s).

MODELS

FEM4X1800A1 WAHM184A2 WAHT184A2 FEM4X2400A1 WAHM244A2 WAHT244A2 FEM4X3000A1 WAHM304A2 WAHT304A2 FEM4X3500A1 WAHM364A2 WAHT364A2 FEM4X3600A1 WAHM424A2 WAHT424A2 FEM4X4200A1 WAHM484A2 WAHT484A2 FEM4X4800A1 WAHM604A2 WAHT604A2 FEM4X6000B1 FEM4X6000BT1

WARNING

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TECHNICAL SUPPORT MANUAL Fan Coils: FEM4X, WAHM**4, WAHT**4

FAN COIL MODEL NUMBER IDENTIFICATION GUIDE

DIGIT POSITION

1 2 3 4 5 6,7,8,9 10 11

F E M 4 X 1800 A T

F = Fan Coil UNIT E = ECM S = Standard PSC MOTOR TYPE M = Multiposition U = Upflow INSTALLATION TYPE

4 = Environmentally Sound R−410A REFRIGERANT

X = TXV METERING DEVICE 1800 = 18,000 BTUH = 1−1/2 tons 2400 = 24,000 BTUH = 2 tons 3000 = 30,000 BTUH = 2−1/2 tons 3500 = 36,000 BTUH = 3 tons 3600 = 36,000 BTUH = 3 tons 4200 = 42,000 BTUH = 3−1/2 tons 4800 = 48,000 BTUH = 4 tons 6000 = 60,000 BTUH = 5 tons NOMINAL CAPACITY A = Standard AT = Tin Coated Copper Tube SALES CODE / FEATURES

Digit Position: 1, 2 3 4 5, 6 7 8 9

FAN COIL MODEL NUMBER IDENTIFICATION GUIDE

Example Part Number: WA H M 24 4 A 1

WA = Air Handler

S = Standard Motor H = High Efficiency Motor MOTOR TYPE

M = Multiposition Plain Copper Evaporator Coil T = Multiposition Tin−coated Copper Evaporator Coil INSTALLATION TYPE

18 = 18,000 BTU/hr = 1−1/2 TONS 24 = 24,000 BTU/hr = 2 TONS 30 = 30,000 BTU/hr = 2−1/2 TONS 36 = 36,000 BTU/hr = 3 TONS 42 = 42,000 BTU/hr = 3−1/2 TONS 48 = 48,000 BTU/hr = 4 TONS 60 = 60,000 BTU/hr = 5 TONS NOMINAL COOLING CAPACITY

4 = R−410A REFRIGERANT SALES DIGIT EXTRA DIGIT

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TECHNICAL SUPPORT MANUAL Fan Coils: FEM4X, WAHM**4, WAHT**4

ACCESSORIES PART NUMBER IDENTIFICATION GUIDE

EB AC 01 NCB A

EB = Evaporator Blower AC = Accessory 01 = Product Identifier Number NCB = Non−Combustible Base Kit

DFK = Down Flow Kit PLG = Power Plug (no heat kit) SPK = Single Point Wiring Kit FKS = Filter Kit Small FKM = Filter Kit Medium FKL = Filter Kit Large FKX = Filter Kit Extra Large CTK = Condensate Trap Kit (PVC pipe) Sales Code

ELECTRIC HEATER MODEL NUMBER IDENTIFICATION GUIDE

EHK 05 A K N 1

EHK = Electric Heater Kit 05 = 5 kW 07 = 7 kW 09 = 9 kW 10 = 10 kW 15 = 15 kW 18 = 18 kW 20 = 20 kW 25 = 25 kW 30 = 30 kW NOMINAL HEAT VALUE Sales Code K = 208 / 230 single−phase H = 208 / 230, 3−phase KC = 208 / 230, supplied as single phase, field convertible to 3−phase HC = 208 / 230 supplied as 3−phase, field convertible to single phase VOLTAGE (60 Hz) Product Identifier Engineering Code

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TECHNICAL SUPPORT MANUAL Fan Coils: FEM4X, WAHM**4, WAHT**4

Models:

FEM4X1800A1 FEM4X2400A1 FEM4X3000A1 FEM4X3500A1 FEM4X3600A1 FEM4X4200A1 FEM4X4800A1

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TECHNICAL SUPPORT MANUAL Fan Coils: FEM4X, WAHM**4, WAHT**4

Models:

WAHM184A2 WAHT184A2 WAHM244A2 WAHT244A2 WAHM304A2 WAHT304A2 WAHM364A2 WAHT364A2 WAHM424A2 WAHT424A2 WAHM484A2 WAHT484A2 WAHM604A2 WAHT604A2 FEM4X6000B1 FEM4X6000BT1

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TECHNICAL SUPPORT MANUAL Fan Coils: FEM4X, WAHM**4, WAHT**4

AIRFLOW PERFORMANCE − CFM at a given Speed and Static reading

Model

FEM4X1800

FEM4X2400

FEM4X3000

FEM4X3500

FEM4X3600

FEM4X4200

FEM4X4800

Blower Speed

Medium 701 659 619 578 538 499

Medium 823 786 747 707 665 622

Medium 1033 1000 965 928 888 846

Medium 1282 1238 1192 1142 1090 1036

Medium 1327 1282 1236 1187 1135 1081

Medium 1479 1437 1392 1344 1293 1240

Medium 1652 1617 1581 1543 1504 1463

AIRFLOW PERFORMANCE − CFM at a given Speed and Static reading

Model Blower Speed

FEM4X6000B

High 766 739 706 666 619 566

Low 614 572 530 486 441 396

High 941 905 868 830 792 753

Low 633 583 533 482 431 378

High 1130 1097 1063 1028 992 955

Low 840 802 760 713 663 609

High 1437 1398 1354 1308 1257 1204

Low 1168 111 8 1067 1014 959 903

High 1479 1437 1392 1344 1293 1240

Low 1192 1151 1100 1039 970 890

High 1616 1578 1533 1480 1420 1353

Low 1303 1258 1211 1161 1108 1054

High 1805 1772 1739 1704 1669 1632

Low 1458 1418 1377 1335 1292 1248

Tap 5 1897 1867 1836 1808 1774 1736

Tap 4 1817 1785 1757 1724 1693 1655

Tap 3 1817 1785 1757 1724 1693 1655

Tap 2 1657 1621 1589 1557 1518 1474

Tap 1 1443 1412 1377 1332 1286 1243

Measured Static Pressure, inlet to outlet (inches water column)

0.10 0.20 0.30 0.40 0.50 0.60

Measured Static Pressure, inlet to outlet (inches water column)

0.10 0.20 0.30 0.40 0.50 0.60

NOTES:

1. Airflow based upon dry coil at 230v with factory approved filter and electric heater (2 element heater sizes 1800 through 3600, 3 element heater sizes 4200 through 6000).

2. Airflow at 208 volts is approximately the same as 230 volts because the ECM motor is a constant torque motor. The torque doesn’t drop off at the speeds the motor operates.

3. To avoid potential for condensate blowing out of drain pan prior to making drain trap: Return static pressure must be less than 0.40 in. wc. Horizontal applications of 4200 − 6000 sizes must have supply static greater than 0.20 in. wc.

4. Airflow above 400 cfm/ton on 4800 − 6000 size could result in condensate blowing off coil or splashing out of drain pan.

5. Not recommended for use above 0.60 inches water column external static pressure.

6. Shading − Airflow outside 450 cfm/ton.

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TECHNICAL SUPPORT MANUAL Fan Coils: FEM4X, WAHM**4, WAHT**4

AIRFLOW PERFORMANCE − CFM at a given Speed and Static reading

Model Blower Speed

WAHM184A*

WAHT184A*

WAHM244A*

WAHT244A*

WAHM304A*

WAHT304A*

WAHM364A*

WAHT364A*

WAHM424A*

WAHT424A*

WAHM484A*

WAHT484A*

WAHM604A*

WAHT604A*

High 766 739 706 666 619 566

Medium 701 659 619 578 538 499

Low 614 572 530 486 441 396

High 941 905 868 830 792 753

Medium 823 786 747 707 665 622

Low 633 583 533 482 431 378

High 1130 1097 1063 1028 992 955

Medium 1033 1000 965 928 888 846

Low 840 802 760 713 663 609

High 1437 1398 1354 1308 1257 1204

Medium 1282 1238 1192 1142 1090 1036

Low 1168 111 8 1067 1014 959 903

High 1616 1578 1533 1480 1420 1353

Medium 1479 1437 1392 1344 1293 1240

Low 1303 1258 1211 1161 1108 1054

High 1805 1772 1739 1704 1669 1632

Medium 1652 1617 1581 1543 1504 1463

Low 1458 1418 1377 1335 1292 1248

High 2057 2024 1989 1954 1916 1878

Medium 1799 1766 1731 1695 1658 1618

Low 1667 1633 1596 1558 1517 1475

Measured Static Pressure, inlet to outlet (inches water column)

0.10 0.20 0.30 0.40 0.50 0.60

STATIC PRESSURE CORRECTION FROM DRY TO WET COIL (inches of water column)

Airflow performance chart above was developed using fan coils with DRY coils. When taking a static reading across a WET coil, adjust the static pressure numbers by adding the values in this table (for a given CFM, wet coil will have greater static pressure drop than dry coil).

Model Size

FEM4X1800

FEM4X2400

FEM4X3000

FEM4X3500

FEM4X3600

FEM4X4200

FEM4X4800

FEM4X6000

500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000

0.034 0.049 0.063 — — — — — — — — — — — — —

0.016 0.027 0.038 0.049 0.059 — — — — — — — — — — —

— — — 0.049 0.059 0.070 0.080 — — — — — — — — —

— — — — — 0.055 0.064 0.073 0.081 — — — — — — —

— — — — — 0.034 0.042 0.049 0.056 — — — — — — —

— — — — — — — 0.049 0.056 0.063 0.070 — — — — —

— — — — — — — — — 0.038 0.043 0.049 0.054 0.059 — —

— — — — — — — — — — — 0.049 0.054 0.059 0.065 0.070

CFM

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TECHNICAL SUPPORT MANUAL Fan Coils: FEM4X, WAHM**4, WAHT**4

STATIC PRESSURE CORRECTION FROM DRY TO WET COIL (inches of water column)

Model

WAHM184A*

WAHT184A*

WAHM244A*

WAHT244A*

WAHM304A*

WAHT304A*

WAHM364A*

WAHT364A*

WAHM424A*

WAHT424A*

WAHM484A*

WAHT484A*

WAHM604A*

WAHT604A*

500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000

.034 .049 .063 − − − − − − − − − − − − −

.016 .027 .038 .049 .059 − − − − − − − − − − −

− − − .049 .059 .070 .080 − − − − − − − − −

− − − − − .055 .064 .073 .081 − − − − − − −

− − − − − − − .049 .056 .063 .070 − − − − −

− − − − − − − − − .038 .043 .049 .054 .059 − −

− − − − − − − − − − − .027 .031 .035 .039 .043

CFM

STATIC PRESSURE DROP ACROSS FILTER (inches of water column)

Model Size

400 600 800 1000 1200 1400 1600 1800 2000

CFM

FEM4X1800 0.020 0.044 0.075 — — — — — — FEM4X2400 — 0.044 0.075 0.110 — — — — — FEM4X3000 — — 0.048 0.072 0.100 — — — — FEM4X3500 — — — 0.072 0.100 0.130 — — — FEM4X3600 — — — 0.072 0.100 0.130 — — — FEM4X4200 — — — — 0.070 0.092 0.120 — — FEM4X4800 — — — — — 0.092 0.120 0.152 — FEM4X6000 — — — — — — 0.086 0.105 0.130

STATIC PRESSURE DROP ACROSS FILTER (inches of water column)

Model

WAHM184A*

WAHT184A*

WAHM244A*

WAHT244A*

WAHM304A*

WAHT304A*

WAHM364A*

WAHT364A*

WAHM424A*

WAHT424A*

WAHM484A*

WAHT484A*

WAHM604A*

WAHT604A*

400 600 800 1000 1200 1400 1600 1800 2000

.020 .044 .075 − − − − − −

− .044 .075 .110 − − − − −

− − .048 .072 .100 − − − −

− − − .072 .100 .130 − − −

− − − − .070 .092 .120 − −

− − − − − .092 .120 .152 −

− − − − − − .120 .152 .187

CFM

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TECHNICAL SUPPORT MANUAL Fan Coils: FEM4X, WAHM**4, WAHT**4

FEM4X 1800 2400 3000 3600 4200 4800

NOTE: This illustration is for reference only. Your unit may differ in appearance or may not include all components shown. Please refer to Parts List for exact parts listing.

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TECHNICAL SUPPORT MANUAL Fan Coils: FEM4X, WAHM**4, WAHT**4

FEM4X 1800

2400 3000 3600

4200 4800

NOTE: This illustration is for reference only. Your unit may differ in appearance or may not include all components shown. Please refer to Parts List for exact parts listing.

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TECHNICAL SUPPORT MANUAL Fan Coils: FEM4X, WAHM**4, WAHT**4

FEM4X 1800 2400 3000 3600

4200 4800

NOTE: This illustration is for reference only. Your unit may differ in appearance or may not include all components shown. Please refer to Parts List for exact parts listing.

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