HEATING CAPACITY
2 Pipes System Fan Speed : High (3 Rows Coil) Unit: Btu/h (1Btu = 0.2928104W)
Entering Air Temperature 69.8ºF (21ºC)(DB)
Entering Water TemperatureºF ºC
Unit Size
Water
Flow
l/min
W.P.D
kPa
104(40) 113(45) 122(50) 131(55) 140(60) 149(65) 158(70) 167(75) 176(80)
4 6.6 6020 7530 9030 10535 12040 13545 15050 16555 18060
5.5 10.9 6455 8070 9680 11295 12905 14520 16130 17750 19360
7 15.9 6720 8405 10085 11760 13440 15125 16805 18485 20165
MCW200C
8.5 21.6 6905 8635 10355 12085 13810 15540 17265 18990 20720
6 5.9 8775 10970 13165 15360 17550 19745 21945 24140 26335
8 9.3 9370 11710 14050 16390 18735 21075 23420 25760 28100
10 13.2 9750 12195 14630 17065 19510 21945 24380 26825 29260
MCW300C
12 17.6 10025 12535 15035 17545 20055 22555 25065 27570 30075
7 7.3 11335 14165 17005 19835 22670 25505 28335 31170 34005
10 13.8 12300 15370 18445 21520 24590 27665 30740 33815 36890
13 22.0 12870 16085 19300 22520 25740 28955 32165 35385 38605
MCW400C
16 31.8 13245 16560 19870 23180 26490 29805 33115 36425 39735
12 22.6 17895 22370 26845 31315 35790 40265 44740 49210 53685
15 33.7 18730 23410 28095 32780 37465 42145 46830 51510 56190
18 46.8 19320 24155 28980 33815 38640 43475 48300 53135 57960
MCW600C
21 61.7 19760 24700 29635 34575 39520 44460 49400 54340 59280
19 15.5 22475 28095 33710 39330 44950 50565 56185 61805 67425
24 23.5 23525 29400 35280 41160 47040 52925 58805 64685 70565
29 32.8 24255 30320 36380 42450 48510 54575 60635 66705 72765
MCW800C
34 43.5 24795 31000 37200 43395 19600 55800 61995 68200 74395
20 12.5 24965 31205 37445 43690 49930 56170 62410 68655 74895
25 18.6 26145 32675 39215 45750 52285 58820 65360 71895 78430
30 25.7 26985 33730 40475 47225 53970 60720 67460 74210 80955
MCW1000C
35 33.7 27615 34525 41430 48330 55235 62140 69045 75950 82850
26 22.5 32445 40560 48665 56780 64890 73000 81110 89225 97335
32 32.9 33865 42330 50795 59260 67730 76195 84660 93125 101595
38 45.2 34905 43630 52355 61080 69810 78530 87255 95985 104705
MCW1200C
44 59.3 35695 44620 53545 62470 71390 80315 89240 98165 107090
Note:
1. The heating capacity of the medium speed and low speed can be calculated by the
Speed Correction Factor.
2. The heating capacity under different entering air temperature, calculating as
following example of MCW600C:
MODEL MEDIUM LOW
MCW200C 0.86 0.72
MCW300C 0.83 0.71
MCW400C 0.88 0.72
MCW600C 0.84 0.73
MCW800C 0.85 0.76
MCW1000C 0.83 0.73
MCW1200C 0.85 0.74
Step 1: Heating capacity of MCW600C is 38640Btu/h under below condition:
Water Flow 18 l/min, Water Temperature 140ºF (60ºC), Air Temperature
69.8ºF (21ºC)
Step 2: Variance of heating capacity when entering air temperature varies 1ºF:
38649 / (140 - 69.8) = 550.4Btu/ºF
Step 3: The heating capacity after modification under entering air temperature:
64.4ºF (18ºC) 550.4 x (140 - 64.4) = 41610.2Btu/h
Page 18
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