York K3EU120, K3EU180, K2EU060, K4EU090 User Manual

Technical Guide

SPLIT-SYSTEM

EVAPORATOR BLOWERS

K2EU060, K4EU090, K3EU120 &

K3EU180

5 THRU 15 NOMINAL TONS

036-21300-002-A-0905

DESCRIPTION

®These completely assembled units include a well-insulated cabinet, a DX cooling coil with copper tubes and aluminum fins, expansion valve(s), distributor(s), throwaway filters, a centrifugal blower, a blower motor, an adjustable belt drive, a blower motor contactor and a small holding charge of refrigerant-22.

The units are shipped in the vertical position ready for field installation. They can be installed for horizontal operation by reversing the position of the solid bottom panel with the return air duct flange on the front of the unit.

ACCESSORIES—FIELD INSTALLED

SUPPLY AIR PLENUMS

These fully insulated plenums are available for free standing units located within the conditioned space, are shipped knocked-down for easy field assembly, are finished to match the exterior of the basic unit, and have double deflection grills that can be adjusted to vary the throw, spread and drop of the supply air.

RETURN AIR GRILLS

These expanded metal grills are available for free standing units located within the conditioned space, are finished to match the exterior of the basic unit and are shipped in one piece for easy installation.

BASES

Bases are available to raise vertical units above the floor. Outdoor air may be introduced through these bases by cutting an access opening to accommodate the outdoor air duct connection. These bases are finished to match the exterior of the basic unit. They may have to be insulated in the field for certain applications.

THREE-PHASE ELECTRIC HEATERS

Electric heaters are available in several capacities to provide maximum flexibility. Both the air conditioning unit and the heater can be selected to precisely match the cooling and heating requirements of the conditioned space. These heaters are designed for easy field installation over the supply air opening of the unit. They have been tested by and will be shipped with a CSA label. Every heater will be fully protected against excessive current and temperature by fuses and two high limit thermostats.

Units with electric heat will require only one power supply for both the heating elements and the supply air blower motor, and the power wiring can be protected by either dual element/time delay fuses or an inverse time circuit breaker.

FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE

036-21300-002-A-0905

TABLE OF CONTENTS

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 ACCESSORIES—FIELD INSTALLED . . . . . . . . . . . . . . . . 1 NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 APPLICATION FLEXIBILITY . . . . . . . . . . . . . . . . . . . . . . . 3

	LIST OF FIGURES
Fig. #		Pg. #
1	VERTICAL AND HORIZONTAL APPLICATION
	KEU060, 090 & 120 . . . . . . . . . . . . . . . . . . . . . . . .	. . . 4
2	VERTICAL AND HORIZONTAL APPLICATION
	KEU180 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 4
3	SUSPENSION MOUNTING (HORIZONTAL) -
	KEU060, 090 AND 120 . . . . . . . . . . . . . . . . . . . . .	. . . 5
4	SUSPENSION ACCESSORY (HORIZONTAL) -
	KEU180 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 6
5	UNIT DIMENSIONS KEU060 . . . . . . . . . . . . . . . .	. . 16
6	UNIT DIMENSIONS KEU090 & 120 . . . . . . . . . . .	. . 17
7	UNIT DIMENSIONS KEU180 . . . . . . . . . . . . . . . .	. . 18
8	ACCESSORY DIMENSIONS . . . . . . . . . . . . . . . .	. . 19
9	RETURN AIR GRILL . . . . . . . . . . . . . . . . . . . . . . .	. . 20
10	BASE ACCESSORY . . . . . . . . . . . . . . . . . . . . . . .	. . 20
11	STEAM COIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 21
12	HOT WATER COIL . . . . . . . . . . . . . . . . . . . . . . . .	. . 21
13	FIELD WIRING FOR POWER SUPPLY . . . . . . . .	. . 24
14	COOLING ONLY UNIT . . . . . . . . . . . . . . . . . . . . .	. . 24
15	UNIT WITH STEAM OR HOT WATER COIL
	ACCESSORY . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 24
16	FIELD WIRING FOR UNITS WITH ELECTRIC
	HEAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 25

LIST OF TABLES

Tbl. #		Pg. #
1	UNIT SUSPENSION MOUNTING (HORIZONTAL
	APPLICATION) WEIGHTS . . . . . . . . . . . . . . . . . .	. . . 5
2	KEU OPERATING WEIGHTS (LBS.) . . . . . . . . . .	. . . 5
3	SOUND POWER RATINGS . . . . . . . . . . . . . . . . .	. . . 6
4	HEATING CAPACITY - ELECTRIC HEAT
	ACCESSORY . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 7
5	STEAM COIL CAPACITY, MBH@2 PSIG . . . . . .	. . . 8
6	HOT WATER CAPACITY, MBH . . . . . . . . . . . . . .	. . . 8
7	PRESSURE DROP VS. GPM . . . . . . . . . . . . . . . .	. . . 8
8	CAPACITY CORRECTION VS. GPM . . . . . . . . . .	. . . 8
9	SUPPLY AIR BLOWER PERFORMANCE -
	KEU060 (5 TON) . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 9
10	SUPPLY AIR BLOWER PERFORMANCE -
	KEU090 (7.5 TON) . . . . . . . . . . . . . . . . . . . . . . . .	. . 10
11	SUPPLY AIR BLOWER PERFORMANCE -
	KEU120 (10 TON) . . . . . . . . . . . . . . . . . . . . . . . . .	. . 11
12	SUPPLY AIR BLOWER PERFORMANCE -
	KEU180 (15 TON) . . . . . . . . . . . . . . . . . . . . . . . . .	. . 12
13	STATIC RESISTANCE FOR UNIT ACCESSORIES
	(IWG) - KEU060-120 . . . . . . . . . . . . . . . . . . . . . . .	. . 13
14	STATIC RESISTANCE FOR UNIT ACCESSORIES
	(IWG) - KEU180 . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 13
15	SUPPLY AIR PLENUM PERFORMANCE DATA .	. . 14
16	BLOWER MOTOR AND DRIVE DATA . . . . . . . . .	. . 14
17	KEU PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . .	. . 15
18	UNIT CLEARANCES KEU060 . . . . . . . . . . . . . . .	. . 16
19	UNIT CLEARANCES KEU090 & 120 . . . . . . . . . .	. . 17
20	UNIT CLEARANCES KEU180 . . . . . . . . . . . . . . .	. . 18
21	ELECTRIC HEATER DIMENSIONS KEU060, 090,
	120 & 180 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 20
22	KEU ELECTRICAL DATA . . . . . . . . . . . . . . . . . . .	. . 22

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ACCESSORIES-FIELD INSTALLED (CONT.)

HOT WATER COILS

These drainable coils have 2 rows of 1/2" copper tubes, 12 aluminum fins per inch, a casing that is finished to match the exterior of the basic unit, but no water control valve. The coils slide out of their casings for easy field installation. They should be mounted over the return air opening on 5, 7-1/2 and 10-ton units—between the unit coil and blower sections on 15-ton units.

STEAM COILS

These non-freeze coils have 1 row of 1" copper tubes, a 5/8" copper tube inside each 1" tube to distribute the steam evenly across the entire length of the coil, 8 aluminum fins per inch, a casing that is finished to match the exterior of the basic unit, but no steam control valve. The coils slide out of their casings for easy field installation and are pitched in their casings to facilitate condensate drainage. They should be mounted over the return air opening on 5, 7-1/2 and 10-ton units—between the unit coil and blower sections on 15-ton units.

SUSPENSION KIT

Suspension kit 1HH0451 is available for 15-ton units installed horizontally. The accessory includes two channel iron supports and the hardware to secure them to the top of the unit. The hanger rods must be supplied by the field.

THERMOSTATS

Wall-mounted thermostats and subbases (24-volt) with system and fan switches are available to control the operation of these split system air conditioners.

APPLICATION FLEXIBILITY

MODELS 5, 7-1/2 & 10 TON

These units are built in a single cabinet with two condensate drain pans. This allows the units to be installed in either the vertical or horizontal position for maximum flexibility.

On vertical applications, the air velocity across the cooling coil keeps the condensate from dripping off the finned surface onto the filters.

On horizontal applications, the unit must be installed with the condensate drain pan under the entire cooling coil.

•The Supply Air Plenum and the Return Air Grill accessories can be used on either arrangement.

•The Base accessory can only be used on the vertical arrangement.

Units installed horizontally are designed for ceiling suspension. Four 3/8"-16 weld nuts are provided in the angle supports on the front of the unit (the side with the logo). Knockouts are provided in the exterior panels for access to these weld nuts. The hanger rods must be supplied in the field.

Unitary Products Group

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FIGURE 1 - VERTICAL AND HORIZONTAL APPLICATION KEU060, 090 & 120

036-21300-002-A-0905

MODEL 15 TON

These units have two distinct modules . . . a blower module and a coil module. Although the unit is always shipped in the vertical position with a vertical air discharge as shown in illustration (a), the blower module can be repositioned in the field as shown in illustrations (b) and (c) for maximum flexibility.

•The Supply Air Plenum, Return Air Grill and Base accessories can be applied on arrangement (a).

•The Return Air Grill and Base accessories can be applied on arrangement (b).

•The Supply Air Plenum, Return Air Grill and Suspension accessories can be applied on arrangement (c).

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FIGURE 2 - VERTICAL AND HORIZONTAL APPLICATION KEU180

4	Unitary Products Group

036-21300-002-A-0905

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FIGURE 3 - SUSPENSION MOUNTING (HORIZONTAL) - KEU060, 090 AND 120

TABLE 1: UNIT SUSPENSION MOUNTING (HORIZONTAL APPLICATION) WEIGHTS

	Shipping	Operating		CG (in)			4-Point Loading (lb)
Unit Model	Weight	Weight	X		Y	A		B	C		D
	(lb)	(lb)
K*EU060	225	210	22.50		15.00	47		51	58		53
K*EU090	340	235	26.50		24.00	78		84	84		78
K*EU120	370	355	26.50		24.00	86		92	92		86
K*EU180	440	425	26.50		24.00	104		77	104		141

TABLE 2: KEU OPERATING WEIGHTS (LBS.)

	MODEL			060	090		120	180
BASIC UNIT	(Cooling Only)			210	325		325	425
	Base			45	55		55	65
	Return Air Grill			10	15		15	20
	Supply Air Plenum			90	100		100	115
	Hot Water Coil			70	105		105	135
ACCESSORIES	Steam Coil			80	115		115	145
			10 KW			66
			16 KW			70
	Electric Heater		26 KW			74
			36 KW			77
			72 KW			125

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FIGURE 4 - SUSPENSION ACCESSORY (HORIZONTAL) - KEU180

TABLE 3: SOUND POWER RATINGS

		ESP	BLOWER						SOUND POWER (dB 10-12			WATTS)
UNIT	CFM							OCTAVE BAND CENTERLINE FREQUENCY (HZ)
MODEL															dB(A)
		IWG	RPM	BHP	63	125	250	500	1,000	2,000	4,000		8,000	SWL dB(a)	@
															10 FT.1
060	2,000	0.50	940	0.70	88	88	78	71	73	66	61		56	77	44
090	3,000	0.60	750	1.05	88	88	78	73	71	66	61		56	77	45
120	4,000	0.70	850	1.75	91	91	81	74	76	69	64		59	81	48
180	6,000	0.75	750	2.75	95	95	85	80	78	73	68		63	84	52

1. At a distance of 10 feet from the blower.

NOTE:	These values have been accessed using a model of sound propagation from a point source into the hemispheric free field. The dBA values provided are
	for reference only. Calculation of dBA values cover matters of system design and the fan manufacturer has no way of knowing the details of each sys-
	tem. This constitutes an exception to any specification or guarantee requiring a dBA value or sound data in any other form than sound power level rat-
	ings.

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TABLE 4: HEATING CAPACITY - ELECTRIC HEAT ACCESSORY

					NOMINAL RATINGS1			CAPACITY
	UNIT MODEL	HEATER MODEL		VOLTAGE TEST			1ST STAGE		2ND STAGE
					KW	MBH	KW	MBH	KW	MBH
		2HT045010	25	208 / 2402	10	34.2	10	34.2	-	-
	060
		2HT045016	25	208 / 2402	16	54.7	10	34.2	6	20.5
		2HT045026	25	208 / 2402	26	88.9	16	54.7	10	34.2
			25	208 / 2402
		2HS045010			10	34.2	10	34.2	-	-
			46	4803
			58	6004
			25	208 / 2402
		2HS045016			16	54.7	10	34.2	6	20.5
			46	4803
	090, 120		58	6004
			25	208 / 2402
		2HS045026	46	4803	26	88.9	16	54.7	10	34.2
			58	6004
			25	208 / 2402
		2HS045036			36	123	16	54.7	20	68.3
			46	4803
			58	6004
			25	208 / 2402
		2HS045010			10	34.2	10	34.2	-	-
			46	2803
			58	6004
			25	208 / 2402
		2HS045016			16	54.7	10	34.2	6	20.5
			46	2803
			58	6004
			25	208 / 2402
	180	2HS045026			26	88.9	16	54.7	10	34.2
			46	2803
			58	6004
			25	208 / 2402
		2HS045036			36	123	16	54.7	20	68.3
			46	2803
			58	6004
			25	208 / 2402
		2HS045072			72	246	36	123	36	123
			46	2803
			58	6004

1.Capacity Ratings do not include the heat generated by the air blower motor.

2.For 208 volts, multiply the MBH and KW by (208/240)² or 0.751. For 230 volts, multiply the MBH and KW by (230/240)² or 0.918.

3.For 460 volts, multiply the MBH and KW by (460/480)² or 0.918.

4.For 575 volts, multiply the MBH and KW by (575/600)² or 0.918.

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TABLE 5: STEAM COIL CAPACITY1, MBH@2 PSIG2

	STEAM COIL	UNIT MODEL	CFM	DRY BULB TEMPERATURE OF AIR ENTERING COIL, ºF
	MODEL			10	30	50	70
			1600	104.0	94.0	83.9	73.9
	1NF0450	060
			2000	115.2	104.0	93.1	81.9
			2400	124.9	113.0	100.9	89.0
			2400	172.2	155.5	139.1	122.4
		090
			3000	191.2	172.6	154.3	136.0
	1NF0451		3600	207.5	187.1	167.4	147.4
			3200	196.4	177.6	158.8	140.0
		120	4000	217.3	195.3	175.3	154.8
			4800	236.1	212.9	190.4	167.8
			4800	298.2	268.4	236.7	211.5
	1NF0452	180
			6000	329.1	297.0	265.6	234.1
			7200	356.4	321.8	287.9	254.0

1.These capacities do not include any blower motor heat.

2.Multiply these capacities by the following factors to correct for higher steam pressures.

	Steam Pressure, psig			5		10			15	20			25
	Capacity correction factor			1.05		1.12			1.19	1.25			1.30
	NOTE: Steam rate (lb./hr.) =		1.025 x MBH
	CAUTION: Do NOT operate a motor above its nominal HP rating when a unit is equipped with a steam coil acces-
	sory.
TABLE 6: HOT WATER CAPACITY1, MBH
WATER COIL MODEL		UNIT MODEL			GPM		CFM		ENTERING WATER TEMP. MINUS ENTERING AIR TEMP., ºF
									70		90		110		130	150
							1600		46.5		60.4		74.6		89.0	101.8
1HW0450		060			10
							2000		51.7		67.2		83.0		99.2	113.4
							2400		56.0		73.0		90.4		107.9	123.3
							2400		78.0		101.3		124.7		148.5	169.7
		090			15
							3000		87.7		113.3		139.6		166.6	190.4
1HW0451							3600		95.5		124.0		153.0		182.1	208.1
							3200		90.3		117.1		144.6		172.1	196.6
		120			15		4000		100.2		130.2		160.7		191.3	218.6
							4800		108.3		140.9		174.3		207.5	237.4
							4800		135.5		175.1		215.8		257.4	294.1
1HW0452		180			20
							6000		150.0		195.0		240.3		285.9	326.6
							7200		162.4		210.8		260.4		309.8	354.3

1. These capacities do no include any blower motor heat.

NOTE: Water Temperature Drop, 0F = 2 x MBH

CAUTION: Do NOT operate a motor above its nominal HP rating when a unit is equipped with a hot water coil accessory.

TABLE 7: PRESSURE DROP VS. GPM

	1HW0450	GPM	10	20	30
		Pressure Drop, PSI	.10	.32	.67
	1HW0451	GPM	15	30	45
		Pressure Drop, PSI	.17	.58	1.22
	1HW0452	GPM	20	40	60
		Pressure Drop, PSI	.20	.67	1.41

TABLE 8: CAPACITY CORRECTION VS. GPM

	1HW0450	GPM	20	30
		Capacity Correction	1.12	1.16
	1HW0451	GPM	30	45
		Capacity Correction	1.11	1.15
	1HW0452	GPM	40	60
		Capacity Correction	1.12	1.17

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TABLE 9: SUPPLY AIR BLOWER PERFORMANCE - KEU060 (5 TON)

					EXTERNAL STATIC PRESSURE
CFM		0.2			0.4			0.6			0.8
	RPM	W	BHP	RPM	W	BHP	RPM	W	BHP	RPM	W	BHP
1400	677	74	0.08	753	174	0.19	831	268	0.29	912	355	0.38
1600	725	225	0.24	801	325	0.35	879	419	0.45	959	506	0.54
1800	773	366	0.39	849	466	0.50	927	560	0.60	1008	647	0.69
2000	822	507	0.54	898	607	0.65	975	701	0.75	1056	789	0.85
2200	871	657	0.70	947	757	0.81	1025	851	0.91	1106	938	1.01
2400	922	818	0.88	997	918	0.99	1075	1012	1.09	1156	1100	1.18
2600	972	994	1.07	1048	1094	1.17	1126	1188	1.27	1207	1276	1.37
2800	1024	1187	1.27	1100	1286	1.38	1178	1380	1.48	1258	1468	1.57
3000	1076	1395	1.50	1152	1495	1.60	1230	1589	1.70	1311	1677	1.80
3200	1129	1622	1.74	1205	1721	1.85	1283	1815	1.95	----	----	----

					EXTERNAL STATIC PRESSURE
CFM		1.0			1.2			1.4			1.6
	RPM	W	BHP	RPM	W	BHP	RPM	W	BHP	RPM	W	BHP
1400	997	435	0.47	1086	507	0.54	1181	570	0.61	1282	622	0.67
1600	1044	586	0.63	1134	658	0.71	1228	721	0.77	1329	774	0.83
1800	1092	727	0.78	1182	799	0.86	1276	861	0.92	1377	914	0.98
2000	1141	869	0.93	1230	940	1.01	1325	1003	1.08	1426	1056	1.13
2200	1191	1018	1.09	1280	1090	1.17	1375	1153	1.24	1476	1205	1.29
2400	1241	1180	1.27	1330	1251	1.34	1425	1314	1.41	1526	1367	1.47
2600	1292	1356	1.45	1381	1427	1.53	1476	1490	1.60	1577	1543	1.66
2800	1343	1548	1.66	1433	1620	1.74	1527	1682	1.80	1628	1735	1.86
3000	1395	1757	1.88	1485	1828	1.96	----	----	----	----	----	----
3200	----	----	----	----	----	----	----	----	----	----	----	----

Exceeds the BHP limitation.

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