York HA090 Technical Manual page 142

TABLE 5: STEAM COIL CAPACITY
STEAM COIL
UNIT MODEL
MODEL
1NF0450
1NF0451
1NF0452
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
Capacity correction factor
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 CAPACITY
WATER COIL MODEL
1HW0450
1HW0451
1HW0452
1. These capacities do no include any blower motor heat.
NOTE: Water Temperature Drop,
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
GPM
1HW0450
Pressure Drop, PSI
GPM
1HW0451
Pressure Drop, PSI
GPM
1HW0452
Pressure Drop, PSI
8
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1
, MBH@2 PSIG
CFM
1600
060 2000
2400
2400
090 3000
3600
3200
120 4000
4800
4800
180 6000
7200
5
1.05
1
, MBH
UNIT MODEL GPM
060 10
090 15
120 15
180 20
0
F = 2 x MBH
10 20 30
.10 .32 .67
15 30 45
.17 .58 1.22
20 40 60
.20 .67 1.41
2
DRY BULB TEMPERATURE OF AIR ENTERING COIL, ºF
10 30
104.0 94.0
115.2 104.0
124.9 113.0
172.2 155.5
191.2 172.6
207.5 187.1
196.4 177.6
217.3 195.3
236.1 212.9
298.2 268.4
329.1 297.0
356.4 321.8
10 15 20
1.12 1.19 1.25
ENTERING WATER TEMP. MINUS ENTERING AIR TEMP., ºF
CFM
70
1600 46.5
2000 51.7
2400 56.0
2400 78.0
3000 87.7
3600 95.5
3200 90.3
4000 100.2
4800 108.3
4800 135.5
6000 150.0
7200 162.4
TABLE 8: CAPACITY CORRECTION VS. GPM
1HW0450
Capacity Correction
1HW0451
Capacity Correction
1HW0452
Capacity Correction
Page 142
246668-YTG-B-0906
50 70
83.9 73.9
93.1 81.9
100.9 89.0
139.1 122.4
154.3 136.0
167.4 147.4
158.8 140.0
175.3 154.8
190.4 167.8
236.7 211.5
265.6 234.1
287.9 254.0
25
1.30
90 110 130
60.4 74.6 89.0
67.2 83.0 99.2
73.0 90.4 107.9
101.3 124.7 148.5
113.3 139.6 166.6
124.0 153.0 182.1
117.1 144.6 172.1
130.2 160.7 191.3
140.9 174.3 207.5
175.1 215.8 257.4
195.0 240.3 285.9
210.8 260.4 309.8
GPM 20
1.12
GPM 30
1.11
GPM 40
1.12
Unitary Products Group
150
101.8
113.4
123.3
169.7
190.4
208.1
196.6
218.6
237.4
294.1
326.6
354.3
30
1.16
45
1.15
60
1.17