Nailor 37S Manual page 65

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
8.2 28
7.6 26
7.0 24
6.4 22
5.9 20
5.3 18
4.7 16
4.1 14
3.5 12
2.9 10
300 400 500 600
142 189 236 283
3 Row (multi-circuit)
kW MBH
17.9 61
16.4 56
14.9 51
13.5 46
12.0 41
10.5 36
9.1 31
7.6 26
6.2 21
4.7 16
300 400 500 600
142 189 236 283
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
MBH (kW) values by the factors below.
Correction factors at other entering conditions:
50 (28) 60 (33)
Factor .455 (.459) .545 (.541)
Unit Sizes 2 & 3
GPM l/s
5
4
3
2
1.5
1
0.5
700 800 900 1000 CFM
330 378 425 472 l/s
GPM l/s
5
4
3
2
1.5
1
0.5
700 800 900 1000 CFM
330 378 425 472 l/s
3. Air Temperature Rise.
ATR (°F) = 927 x MBH ,
4. Water Temp. Drop.
WTD (°F) = 2.04 x
t's; multiply the
5. Connections: 1 Row 1/2" (13), 2 and 3 Row 7/8"
(22); O.D. male solder.
70 (39) 80 (44) 90 (50)
.636 (.639) .727 (.721) .818 (.820)
2 Row (multi-circuit)
kW MBH
13.8 47
.32
.25
.19
12.3 42
.13
.09
10.8 37
.06
9.4 32
7.9 27
.03
6.4 22
5.0 17
3.5 12
300 400 500
142 189 236
Water Pressure Drop
kPa ft. H 0
2
29.8 10.0
.32
23.9 8.0
.25
17.9 6.0
.19
11.9 4.0
1 ROW
.13
2 ROW
6.0 2.0
.09
3 ROW
3.0 1.0
2.4 0.8
.06
1.8 0.6
1.2 0.4
0.6 0.2
.03
0.3 0.1
1 2 3 4 6
.06 .13 .19 .25 .38
WATER FLOW
ATR (°C) = 829 x kW
cfm
MBH ,
WTD (°C) = .224 x
GPM
100 (56) 110 (61) 120 (67)
.909 (.918) 1.00 (1.00) 1.09 (1.10)
600 700 800 900
283 330 378 425
Air Pressure Drop
Pa in. w.g.
249 1.00
447 0.80
149 0.60
100 0.40
50 0.20
3 ROW
25 0.10
20 0.08
15 0.06
10 0.04
5 0.02
2 0.01
8 10 100 200 400 500
GPM
.50 .63 l/s
47 94 189 236
AIRFLOW
Altitude Correction Factors:
Altitude Sensible Heat
ft. (m)
l/s
0 (0)
kW
2000 (610)
l/s
3000 (914)
4000 (1219)
5000 (1524)
6000 (1829)
7000 (2134)
130 (72) 140 (78)
1.18 (1.18) 1.27 (1.28)
GPM l/s
5 .32
4 .25
3 .19
2 .13
1.5 .09
1 .06
C
.03
0.5
1000 CFM
472 l/s
2 ROW
1 ROW
800 1000
CFM
378 472
l/s
Factor
1.00
0.94
0.90
0.87
0.84
0.81
0.78
150 (83)
1.36 (1.36)
C103