Nailor 37S Manual page 66

FAN POWERED TERMINAL UNITS • 37S/37SST SERIES
Performance Data • Hot Water Coil
Models: 37SW and 37SWST • Low Profile • Series Flow
1 Row (single circuit)
kW MBH
14.9 51
13.5 46
12.0 41
10.5 36
9.1 31
7.6 26
C
6.2 21
4.7 16
800 1000
378 472
3 Row (multi-circuit)
kW MBH
35.2 120
32.2 110
29.3 100
26.4 90
23.4 80
20.5 70
17.6 60
14.7 50
11.7 40
8.8 30
800 1000
378 472
NOTES:
1. Capacities are in MBH (kW), thousands of Btu
per hour (kiloWatts).
2. MBH (kW) values are based on a ∆t (temperature
difference) of 110°F (61°C) between entering air
and entering water. For other ∆t's; multiply the
MBH (kW) values by the factors below.
Correction factors at other entering conditions:
∆t °F (°C) 50 (28)
Factor
.455 (.459)
C104
1200 1400 1600 1800
566 661 755 849
1200 1400 1600 1800
566 661 755 849
60 (33) 70 (39) 80 (44)
.545 (.541) .636 (.639) .727 (.721)
Unit Size 4
GPM l/s
kW MBH
7.5 .47
25.5 87
5 .32
24.0 82
4 .25
22.6 77
3 .19
21.1 72
2 .13
19.6 67
18.2 62
1.5 .09
16.7 57
15.2 52
1 .06
47
13.8
12.3 42
10.8 37
9.4 32
0.5 .03
7.9 27
6.4 22
600
2000
CFM
283
944
l/s
Water Pressure Drop
GPM l/s
kPa ft. H 0
2
29.8 10.0
10 .63
23.9 8.0
7.5 .47
17.9 6.0
1 ROW
5 .32
11.9 4.0
4 .25
6.0 2.0
3 .19
3.0 1.0
2.4 0.8
2 .13
1.8 0.6
1.5 .09
1.2 0.4
1 .06
0.6 0.2
0.3 0.1
1 2
2000
CFM
.06 .13
944
l/s
WATER FLOW
3. Air Temperature Rise.
ATR (°F) = 927 x MBH , ATR (°C) = 829 x kW
cfm
4. Water Temp. Drop.
MBH ,
WTD (°F) = 2.04 x WTD (°C) = .224 x
GPM
5. Connections: 1 Row 1/2" (13), 2 and 3 Row 7/8"
(22); O.D. male solder.
90 (50) 100 (56) 110 (61)
.818 (.820) .909 (.918) 1.00 (1.00)
2 Row (multi-circuit)
800 1000 1200 1400
378 472 566 661
Air Pressure Drop
Pa in. w.g.
249 1.00
447 0.80
149 0.60
100 0.40
2 ROW
50 0.20
3 ROW
25 0.10
20 0.08
15 0.06
10 0.04
5 0.02
2 0.01
GPM
3 4 6 8 10 100
.19 .25 .38 .50 .63 l/s
47
Altitude Correction Factors:
Altitude
ft. (m)
l/s
kW
2000 (610)
l/s
3000 (914)
4000 (1219)
5000 (1524)
6000 (1829)
7000 (2134)
120 (67) 130 (72)
1.09 (1.10) 1.18 (1.18)
GPM l/s
7.5 .47
5 .32
4 .25
3 .19
2 .13
1.5 .09
1 .06
0.5 .03
1600 1800 CFM
755 849 l/s
3 ROW
2 ROW
1 ROW
CFM
200 400 600 1000 2000
4 l/s
94 189 283 472 94
AIRFLOW
Sensible Heat
Factor
0 (0) 1.00
0.94
0.90
0.87
0.84
0.81
0.78
140 (78) 150 (83)
1.27 (1.28) 1.36 (1.36)