Data Sheet for Product

Page 16 of 19 Siemens Industry, Inc.
Table 3. Hot Water Reheat Coil Capacities.*
UNIT SIZE 18 UNIT SIZE 18
1-Row Coil 2-Row Coil
GPM
Airflow, CFM
Waterside
GPM
Airflow, CFM
Waterside
Head Head
1500 2000 3000 4000 5000 6000 8000 Loss 1500 2000 3000 4000 5000 6000 8000 Loss
Heating Capacity (MBH) (ft.wg.) Heating Capacity (MBH) (ft.wg.)
2.0 48.6 53.7 60.6 65.2 68.7 71.3 75.2 1.22 2.0 69.3 76.3 85.2 90.7 94.4 97.1 100.8 0.87
3.0 54.1 60.6 69.9 76.3 81.2 85.1 91.0 2.66 3.0 80.8 91.0 104.8 113.8 120.2 125.1 132.1 1.89
4.0 57.4 64.8 75.6 83.3 89.2 94.0 101.3 4.60 4.0 87.9 100.3 117.8 129.7 138.5 145.3 155.2 3.30
5.0 59.5 67.6 79.4 88.0 94.7 100.2 108.7 7.07 5.0 92.6 106.7 127.0 141.3 152.0 160.4 173.0 5.07
6.0 61.0 69.5 82.2 91.5 98.8 104.8 114.2 10.00 6.0 96.1 111.4 134.0 150.1 162.4 172.2 187.0 7.19
7.0 62.2 71.0 84.3 94.1 101.9 108.3 118.4 13.48 7.0 98.7 115.0 139.4 157.0 170.6 181.6 198.4 9.68
8.0 63.0 72.2 85.9 96.2 104.4 111.1 121.8 17.42 8.0 100.8 117.9 143.6 162.5 177.3 189.2 207.7 12.52
10.0 64.3 73.9 88.4 99.3 108.0 115.3 126.9 26.76 10.0 103.8 122.1 150.1 171.0 187.5 201.0 222.2 19.25
Air Side Pressure Drop (Inches WC) Air Side Pressure Drop (Inches WC)
0.04 0.06 0.12 0.20 0.30 0.41 0.67 0.08 0.13 0.27 0.43 0.63 0.85 1.38
UNIT SIZE 18 UNIT SIZE 18
3-Row Coil 4-Row Coil
GPM
Airflow, CFM
Waterside
GPM
Airflow, CFM
Waterside
Head Head
1500 2000 3000 4000 5000 6000 8000 Loss 1500 2000 3000 4000 5000 6000 8000 Loss
Heating Capacity (MBH) (ft.wg.) Heating Capacity (MBH) (ft.wg.)
2.5 93.3 102.6 113.7 120.2 124.4 127.3 131.3 0.54 4.5 125.0 142.8 165.9 180.1 189.8 196.9 206.6 0.67
4 110.3 125.4 145.3 157.9 166.7 173.1 182.2 1.34 9 144.8 172.5 213.1 241.5 262.7 279.2 303.5 2.64
5 116.8 134.7 159.1 175.2 186.7 195.5 207.9 2.05 12 150.2 181.1 228.0 262.2 288.6 309.5 341.2 4.65
6 121.4 141.4 169.5 188.5 202.5 213.3 228.9 2.93 15 153.4 186.4 237.6 276.0 306.1 330.5 368.0 7.22
8 127.5 150.4 183.9 207.7 225.6 239.7 260.8 5.12 18 155.7 190.1 244.4 285.8 318.7 345.8 387.9 10.35
10 131.3 156.1 193.4 220.6 241.6 258.3 283.9 7.88 21 157.3 192.7 249.4 293.1 328.3 357.4 403.3 14.03
12 133.9 160.1 200.2 230.0 253.2 272.1 301.2 11.25 24 158.5 194.7 253.2 298.8 335.7 366.5 415.5 18.27
15 136.5 164.2 207.3 239.9 265.8 287.1 320.5 17.33 27 159.4 196.3 256.2 303.3 341.7 373.9 425.5 23.05
Air Side Pressure Drop (Inches WC) Air Side Pressure Drop (Inches WC)
0.13 0.20 0.40 0.64 0.94 1.27 2.07 0.17 0.27 0.53 0.86 1.25 1.70 2.76
* Notes:
All capacities are based on 180°F entering water temperature and 55°F entering air temperature. For other air and water inlet
temperature conditions, use the correction factors shown in Table 4 to multiply the given heating capacity for each size.
1 MBH = 1000 BTU/Hr. MBH Required = 0.00108 × CFM × Temp. Rise
Table 4. Capacity Correction Data for 1,2,3 and 4 Hot Water Reheat Coils.
Entering
Air Temp.
(°F)
Entering Water Temperature (°F)
Entering
Air Temp.
(°F)
120 130 140 150 160 170 180 190 200 210 220
50 0.54 0.62 0.71 0.79 0.87 0.96 1.04 1.12 1.21 1.29 1.38 50
55 0.50 0.59 0.67 0.75 0.83 0.92 1.0 1.08 1.17 1.25 1.34 55
60 0.47 0.55 0.63 0.71 0.79 0.88 0.96 1.04 1.13 1.21 1.30 60
65 0.43 0.51 0.59 0.67 0.75 0.84 0.92 1.00 1.09 1.17 1.26 65
Note:
1 MBH = 1000 BTU/Hr. MBH Required = 0.00108 × CFM × Temp. Rise