Unitary Products Group
3
550.39-TG5YI
STEAM COIL CAPACITY
1
,kW @ 14 kPa/Mbh @ 2 psig
2
Steam Coil Model
Blower Model
Used On
m
3
/s / CFM
Dry Bulb Temperature of Air Entering Coil, °C/°F
-12 / 10
-1 / 30
10 / 50
21 / 70
1NF0452
KEU180
2.3 / 4800
298.2 / 1018
268.4 / 916
236.7 / 808
211.5 / 722
2.8 / 6000
329.1 / 1124
297.0 / 1014
265.6 / 907
234.1 / 799
3.4 / 7200
356.4 / 1216
321.8 / 1099
287.9 / 983
254.0 / 867
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, kPa/psig
35 / 5
70 / 10
105 / 15
140 / 20
210 / 30
Capacity correction factor
1.06
1.12
1.19
1.25
1.30
NOTE: Steam rate (kg/hr) = 0.66 x kW
(lb/hr) = 1.025xMbh
CAUTION: Do not operate a motor above its nominal HP rating when a unit is equipped
with a steam coil accessory
Water Coil
Model
Blower Model
Used On
l/s / GPM
m
3
/s / CFM
Entering Water Temperature Minus Entering Air Temperature, °C/°F
21 / 70
32 / 90
43 / 110
54 / 130
66 / 150
1HW0451
KEU180
0.95 / 15
2.3 / 4800
135.5 / 463
175.1 / 598
215.8 / 737
257.4 / 879
294.1 / 1004
2.8 / 6000
150.0 / 512
195.0 / 666
240.3 / 820
285.9 / 976
326.6 / 1115
3.4 / 7200
162.4 / 554
210.8 / 720
260.4 / 889
309.8 / 1058
354.3 / 1210
1
These capacities do not include any blower motor heat.
NOTE: Water Temperature Drop, °C =
16 71
.
/
x
kW
l s
°F =
2 x
Mbh
GPM
CAUTION: Do NOT operate a motor above its nominal HP rating when a unit is equipped with a hot water coil accessory.
HOT WATER COIL CAPACITY
1
, kW/Mbh
1HW0450
l/s / GPM
0.63 / 10 /
1.26 / 20
1.90 / 30
Pressure Drop,
kPa / psig/
0.7 / 0.10
2.2 / 0.32
4.7 / 0.67
1HW0451
l/s / GPM
0.95 / 15
1.90 / 30
2.83 / 45
Pressure Drop,
kPa / psig
1.2 / 0.17
4.0 / 0.58
8.5 / 1.22
Meters (H
2
O) = 45,942 x kPa
Feet (H
2
O) = 2031 x psi
PRESSURE DROP VS L/S / GPM
1HW0450
l/s / GPM
1.26 / 20
1.90 / 30
Capacity
Correction
1.12
1.15
1HW0451
GPM
1.90 / 30
2.83 / 45
Capacity
Correction
1.11
1.15
CAPACITY CORRECTION VS
L/S / GPM
