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York K3EU180 User Manual

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036-21300-002-A-0905                                                                                                                                                                                                                                
8
Unitary Products Group
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.
NOTE: Water Temperature Drop, 
0
F = 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 5: STEAM COIL CAPACITY
1
, MBH@2 PSIG
2
STEAM COIL 
MODEL
UNIT MODEL
CFM
DRY BULB TEMPERATURE OF AIR ENTERING COIL, ºF
10
30
50
70
1NF0450
060
1600
104.0
94.0
83.9
73.9
2000
115.2
104.0
93.1
81.9
2400
124.9
113.0
100.9
89.0
1NF0451
090
2400
172.2
155.5
139.1
122.4
3000
191.2
172.6
154.3
136.0
3600
207.5
187.1
167.4
147.4
120
3200
196.4
177.6
158.8
140.0
4000
217.3
195.3
175.3
154.8
4800
236.1
212.9
190.4
167.8
1NF0452
180
4800
298.2
268.4
236.7
211.5
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
TABLE 6: HOT WATER CAPACITY
1
, MBH
WATER COIL MODEL
UNIT MODEL
GPM
CFM
ENTERING WATER TEMP. MINUS ENTERING AIR TEMP., ºF
70
90
110
130
150
1HW0450
060
10
1600
46.5
60.4
74.6
89.0
101.8
2000
51.7
67.2
83.0
99.2
113.4
2400
56.0
73.0
90.4
107.9
123.3
1HW0451
090
15
2400
78.0
101.3
124.7
148.5
169.7
3000
87.7
113.3
139.6
166.6
190.4
3600
95.5
124.0
153.0
182.1
208.1
120
15
3200
90.3
117.1
144.6
172.1
196.6
4000
100.2
130.2
160.7
191.3
218.6
4800
108.3
140.9
174.3
207.5
237.4
1HW0452
180
20
4800
135.5
175.1
215.8
257.4
294.1
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.
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