International Comfort Products FEM4P1800A1, FSM4P1800A1, FSU4P1800A1, FEM4P1800AT1, FSM4P1800AT1 User Manual

TECHNICAL SUPPORT MANUAL

Fan Coils

FEM4P, FSM4P, FSU4P

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:

!WARNING

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

!CAUTION

Signal Words on Product Labeling

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

TABLE OF CONTENTS

Model Number Identification . . . . . . . . . . . . . . . . . . . . . 2

FEM4P Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . 3

FSM4P, FSU4P Wiring Diagram . . . . . . . . . . . . . . . . . . 4

Airflow Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 − 7

Exploded Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . 8 − 13

FEM4P*A1 Parts List . . . . . . . . . . . . . . . . . . . . . . 14 − 15

FEM4P*AT1 Parts List . . . . . . . . . . . . . . . . . . . . . 16 − 17

FSM4P*A1 Parts List . . . . . . . . . . . . . . . . . . . . . . 18 − 19

FSM4P*AT1 Parts List . . . . . . . . . . . . . . . . . . . . . 20 − 21

FSU4P*A1 Parts List . . . . . . . . . . . . . . . . . . . . . . 22 − 23

FSU4P*AT1 Parts List . . . . . . . . . . . . . . . . . . . . . 24 − 25

MODELS

FEM4P1800A1	FSM4P1800A1	FSU4P1800A1
FEM4P1800AT1	FSM4P1800AT1	FSU4P1800AT1
FEM4P2400A1	FSM4P2400A1	FSU4P2400A1
FEM4P2400AT1	FSM4P2400AT1	FSU4P2400AT1
FEM4P3000A1	FSM4P3000A1	FSU4P3000A1
FEM4P3000AT1	FSM4P3000AT1	FSU4P3000AT1
FEM4P3600A1	FSM4P3600A1	FSU4P3600A1
FEM4P3600AT1	FSM4P3600AT1	FSU4P3600AT1
FEM4P4200A1	FSM4P4200A1	FSU4P4200A1
FEM4P4200AT1	FSM4P4200AT1	FSU4P4200AT1
FEM4P4800A1	FSM4P4800A1	FSU4P4800A1
FEM4P4800AT1	FSM4P4800AT1	FSU4P4800AT1

!WARNING

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).

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TECHNICAL SUPPORT MANUAL Fan Coils: FEM4P, FSM4P, FSU4P

	FAN COIL MODEL NUMBER IDENTIFICATION GUIDE
		F	E	M		4	P		1800	A	T
F = Fan Coil
S = Standard PSC
E = High efficiency ECM		MOTOR TYPE
U = Upflow
M = Multiposition		INSTALLATION TYPE
4 = Environmentally Sound R−410A				REFRIGERANT
P = Piston Metering Device					METERING DEVICE
1800	= 18,000 BTUH = 1½ tons
2400	= 24,000 BTUH = 2 tons
3000	= 30,000 BTUH = 2½ tons
3600	= 36,000 BTUH = 3 tons
4200	= 42,000 BTUH = 3½ tons
4800	= 48,000 BTUH = 4 tons					NOMINAL CAPACITY
A = Standard
AT = Tin coated copper tubes							SALES CODE / FEATURES

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	NOMINAL HEAT VALUE
30	= 30 kW
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: FEM4P, FSM4P, FSU4P

	FEM4P
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TECHNICAL SUPPORT MANUAL	Fan Coils: FEM4P, FSM4P, FSU4P

	FSM4P & FSU4P
	NOTES
	1. Use Copper Wire (75ºC Min) Only
	Between Disconnect Switch And Unit.
	2. To Be Wired In Accordance With NEC
	And Local Codes.
	3. If Any Of The Original Wire, As
	Supplied, Must Be Replaced, Use The
	Same Or Equivalent Type Wire.
	4. Replace Low Voltage Fuse With No
	Greater Than 5 Amp Fuse.
	5. (3) Speed Motor Shown Optional (2)
	Speed Motor Uses HI (BLK) And LOW
	(BLUE or RED).
	6. Connect R To R, G To G, Etc. See
	Outdoor Instruction For Details.
	328964-101 REV. A
4	496 04 5500 01

TECHNICAL SUPPORT MANUAL						Fan Coils: FEM4P, FSM4P, FSU4P
	AIRFLOW PERFORMANCE − CFM at a given Speed and Static reading
Model	Blower Speed			Total Static (inches water column)
		0.10	0.20	0.30		0.40	0.50	0.60
	Tap 5					669	620	565
		767	739	702
	Tap 4	614	569	534		486	436	398
FEM4P1800	Tap 3	701	660	616		581	537	499
	Tap 2	614	569	534		486	436	398
	Tap 1	614	569	534		486	436	398
	Tap 5	969	936		892	835	763	676
	Tap 4	826	795		766	743	706	660
FEM4P2400	Tap 3	826	795	766		743	706	660
	Tap 2	701	660	616		581	537	499
	Tap 1	617	592	552		507	472	420
	Tap 5	1108	1090	1065		1034	1009	974
	Tap 4	1026	1000	969		938	899	865
FEM4P3000	Tap 3	1026	1000	969		938	899	865
	Tap 2	909	873	842		799	762	724
	Tap 1	825	795	757		722	674	634
	Tap 5	1301	1276	1245		1218	1176	1121
	Tap 4	1227	1191	1169		1143	1105	1074
FEM4P3600	Tap 3	1227	1191	1169		1143	1105	1074
	Tap 2	1087	1062	1030		1001	966	930
	Tap 1	1026	1000	969		938	899	865
	Tap 5	1560	1544	1507		1464	1424	1358
	Tap 4	1419	1397	1358		1320	1279	1239
FEM4P4200	Tap 3	1419	1397	1358		1320	1279	1239
	Tap 2	1249	1220	1184		1142	1093	1052
	Tap 1	1242	1205	1158		1110	1069	1026
	Tap 5	1743	1712	1679		1642	1610	1574
	Tap 4	1669	1634	1599		1564	1531	1499
FEM4P4800	Tap 3	1669	1634	1599		1564	1531	1499
	Tap 2	1452	1413	1377		1339	1308	1271
	Tap 1	1300	1256	1221		1182	1142	1101

AIRFLOW PERFORMANCE − CFM at a given Speed and Static reading

		Blower					Total Static (inches water column)
	Model		0.10		0.20		0.30		0.40		0.50		0.60
		Speed
			208V	230V	208V	230V	208V	230V	208V	230V	208V	230V	208V	230V
	FSM4P1800	High	742	825	707	768	642	714	568	648	466	526	403	434
	FSU4P1800	Low	541	608	480	564	417	511	357	431	299	363	n/a	304
	FSM4P2400	High	1041	1112	969	1030	888	936	774	791	573	654	341	438
	FSU4P2400	Low	874	1014	838	953	781	868	684	740	506	573	341	418
	FSM4P3000	High	1256	1327	1186	1242	1071	1132	952	1005	704	791	459	482
	FSU4P3000	Low	965	1117	949	1074	916	1019	805	902	575	637	396	447
	FSM4P3600	High	1306	1490	1264	1418	1207	1338	1135	1241	1043	1127	842	937
	FSU4P3600	Low	1164	1335	1144	1290	1108	1226	1052	1148	970	1048	697	855
	FSM4P4200	High	1723	1768	1639	1681	1544	1576	1435	1465	1309	1340	1144	1182
	FSU4P4200	Low	1387	1543	1358	1488	1311	1410	1237	1315	1137	1200	997	1047
	FSM4P4800	High	1902	1941	1803	1867	1706	1767	1593	1648	1472	1512	1303	1371
	FSU4P4800	Low	1671	1777	1630	1711	1563	1630	1479	1528	1370	1412	1218	1266

- Airflow outside 450 cfm/ton.

NOTES:

1.Airflow based upon dry coil at 230v with factory−approved filter and electric heater (2 element heater sizes 1800 through 3600, 3 element heater sizes 4200 through 4800). For FEM4P models, airflow at 208 volts is approximately the same as 230 volts because the ECM motor is a constant torque motor. The torque doesn’t drop off at the speeds the motor operates.

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

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

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

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TECHNICAL SUPPORT MANUAL	Fan Coils: FEM4P, FSM4P, FSU4P

PRESSURE DROP ACROSS FILTER (inches of water column)

Model					CFM
FEM4P	400	600	800	1000	1200	1400	1600	1800	2000
1800	0.02	0.044	0.075	—	—	—	—	—	—
2400, 3000	—	0.022	0.048	0.072	0.100	—	—	—	—
3600 4200, 4800	—	—	—	0.051	0.070	0.092	0.120	0.152	—

Models					CFM
FSM4P, FSU4P	400	600	800	1000	1200	1400	1600	1800	2000
1800, 2400	0.012	0.022	0.048	0.072	—	—	—	—	—
3000, 3600, 4200	—	—	0.036	0.051	0.07	0.092	0.12	—	—
4800	—	—	—	—	—	0.073	0.086	0.105	0.13

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

Model								CFM
FEM4P	500	600	700	800	900	1000	1100	1200	1300	1400	1500	1600	1700	1800	1900	2000
1800	0.034	0.049	0.063	—	—	— — — — — —						—	—	—	—	—
2400	0.034	0.049	0.063	0.076	0.089 —		—	—	—	—	—	—	—	—	—	—
3000	—	—	—	0.049	0.059	0.070	0.080	—	—	—	—	—	—	—	—	—
3600	—	—	—	—	—	0.070	0.080	0.090	0.099	—	—	—	—	—	—	—
4200	—	—	—	—	—	—	—	0.049	0.056	0.063	0.070	—	—	—	—	—
4800	—	—	—	—	—	—	—	—	—	0.063	0.070	0.076	0.083	0.090	—	—

Models								CFM
FSM4P,	500	600	700	800	900	1000	1100	1200	1300	1400	1500	1600	1700	1800	1900	2000
FSU4P
1800	0.016	0.027	0.038	—	—	— — — — — —						—	—	—	—	—
2400	0.016	0.027	0.038	0.049	0.059	—	—	—	—	—	—	—	—	—	—	—
3000	—	—	—	0.036	0.046	0.055	0.064	—	—	—	—	—	—	—	—	—
3600	—	—	—	—	—	0.055	0.064	0.073	0.081	—	—	—	—	—	—	—
4200	—	—	—	—	—	—	—	0.049	0.056	0.063	0.07	—	—	—	—	—
4800	—	—	—	—	—	—	—	—	—	0.038	0.043	0.049	0.054	0.059	—	—

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TECHNICAL SUPPORT MANUAL Fan Coils: FEM4P, FSM4P, FSU4P

MINIMUM CFM WHEN USING ELECTRIC HEAT

Model					HEATER kW
FEM4P	3	5	8	9	10	15	18	20	24	30
1800	525	525	525	—	600	—	—	—	—	—
2400	700	700	700	—	700	775	—	—	—	—
3000	—	875	875	—	875	875	—	1060	—	—
3600	—	1050	970	970	970	920	—	1040	—	—
4200	—	—	1225	1225	1225	1225	1225	1225	—	—
4800	—	—	1400	1400	1400	1400	1400	1400	1400	1400
Note: Speed Tap 4 (white wire) is used for electric heat only. White wire must remain on tap 4.

Models					HEATER kW
FSM4P, FSU4P	3	5	8	9	10	15	18	20	24	30
1800	525	525	525	—	600	—	—	—	—	—
2400	700	700	700	—	700	775	—	—	—	—
3000	—	875	875	—	875	875	—	1060	—	—
3600	—	1050	970	970	970	920	—	1040	—	—
4200	—	—	1225	1225	1225	1225	1225	1225	—	—
4800	—	—	1400	1400	1400	1400	1400	1400	1400	1400

Note: Values indicate low or medium speed.

STATIC PRESSURE CORRECTION FOR ELECTRIC HEATERS (inches of water column)

Airflow performance chart was developed using fan coils with 10 kW electric heater (2 elements) in the 1800 − 3600 model sizes, and 15 kW electric heaters (3 elements) in the 4200 − 4800 model sizes.

When using a different number of heater elements, adjust the static pressure numbers by adding or subtracting the values in this table (for a given CFM, more electric heater elements create higher static pressure drop).

			Heater kW
Model Size	No Heater	3 or 5	8 or 10	9 or 15	20	18, 24, or 30
			Number of Heat Elements
	0	1	2	3	4	6
1800	+0.02	+0.01	0	−0.02	−0.04	−
2400	+0.02	+0.01	0	−0.02	−0.04	−
3000	+0.02	+0.01	0	−0.02	−0.04	−
3600	+0.02	+0.01	0	−0.02	−0.04	−
4200	+0.04	−	+0.02	0	−0.02	−0.10
4800	+0.04	−	+0.02	0	−0.02	−0.10

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TECHNICAL SUPPORT MANUAL	Fan Coils: FEM4P, FSM4P, FSU4P

NOTE: This illustration is for reference only. Your unit may

differ in appearance or may not include all components shown.

D

G

AA

1

FEM4P, FSM4P, FSU4P

A

C

B

H

K

BB

5

E

8	496 04 5500 01