Performance Data - Zehnder Rittling HC Installation, Operation And Maintenance Manual

Performance Data

H4C: Cooling coil capacities (Btuh)
Primary Air
F
Cfm
24" 32" 40"
1383
15 324
(0.89)
1820 1872
20 432
(1.59) (0.94)
2251 2316 2358
25 540
(2.48) (1.47) (0.97)
2678 2756 2806
30 648
(3.57) (2.11) (1.39)
3192 3250
35 756
(2.88) (1.90)
3625 3691
40 864
(3.76) (2.48)
4129
45 972
(3.14)
4565
50 1080
(3.88)
55 1188
60 1296
65 1405
70 1512
75 1620
80 1730
85 1838
90 1942
95 2055
100 2160
105 2265
110 2375
115 2482
120 2590
125 2700
130 2810
135 2918
140 3022
145 3130
150 3240
155 3350
160 3460
165 3565
170 3675
Notes:
Coil capacity for other than 25 °F T use the following formula:
n n
(trm - tew)/25 x rating at 25 °F T.
To aide in balancing the water systems, all units regardless of size
n n
have the same pressure drop across the water coils.
The values in the ( ) indicate the nozzle pressure (inches of wg).
n n
G
52" 24" 32" 40" 52"
1888
(0.81)
2199 2402
(1.26) (0.74)
2490 2720 2904
(1.82) (1.07) (0.71)
3233 2766 3022 3227
(1.10) (2.48) (1.46) (0.97)
3672 3030 3310 3534 3746
(1.44) (3.24) (1.91) (1.26) (0.73)
4108 3587 3830 4060
(1.82) (2.42) (1.60) (0.93)
4542 3854 4116 4362
(2.25) (2.99) (1.97) (1.14)
4974 4113 4392 4655
(2.72) (3.62) (2.39) (1.39)
5403 4661 4940
(3.24) (2.85) (1.65)
5832 4923 5217
(3.80) (3.34) (1.94)
5178 5488
(3.88) (2.25)
5753
(2.58)
6012
(2.94)
6265
(3.32)
6515
(3.72)
Nozzle Arrangement
H
Unit Size
24" 32" 40" 52" 24"
2375
(0.89)
2612 2884
(1.21) (0.71)
2837 3131 2646
(1.58) (0.94) (0.92)
3050 3367 3627 2823
(2.01) (1.19) (0.78) (1.17)
3255 3594 3870 4151 2991
(2.48) (1.46) (0.96) (0.56) (1.45)
3453 3811 4105 4403 3152
(3.57) (1.77) (1.17) (0.68) (1.75)
3643 4022 4331 4645 3307
(3.57) (2.11) (1.39) (0.81) (2.09)
4225 4550 4881 3455
(2.48) (1.63) (0.95) (2.45)
4423 4763 5109 3599
(2.87) (1.90) (1.10) (2.84)
4615 4971 5331 3738
(3.30) (2.18) (1.26) (3.26)
4803 5173 5548 3873
(3.76) (2.48) (1.44) (3.71)
5370 5759
(2.80) (1.62)
5563 5966
(3.14) (1.82)
5751 6168
(3.50) (2.03)
5936 6367
(3.87) (2.25)
6561
(2.48)
6752
(2.72)
6940
(2.97)
7125
(3.24)
7307
(3.51)
7486
(3.80)
The ratings above are based on 25 °FT, 1.50 gpm water flow rate
n n
and 8 ft water coil pressure drop (all sizes) for a single coil.
All ratings include allowance for lint screens.
n n
T = trm - tew (trm = room temperature and tew = entering water
n n
temperature).
All ratings include reduction in capacity for double coil (4-pipe).
n n
J K
32" 40" 52" 24" 32"
3200
(0.72)
3391 2852
(0.89) (0.95)
3573 3860 2995
(1.07) (0.68) (1.15)
3748 4049 3131 3545
(1.28) (0.81) (1.36) (0.81)
3917 4231 3263 3693
(1.50) (0.95) (1.60) (0.95)
4079 4407 3389 3836
(1.74) (1.11) (1.86) (1.10)
4237 4578 5027 3511 3974
(2.00) (1.27) (0.75) (2.13) (1.26)
4390 4743 5209 3629 4108
(2.27) (1.45) (0.86) (2.43) (1.44)
4539 4904 5385 3743 4238
(2.57) (1.63) (0.87) (2.74) (1.62)
4684 5060 5557 3855 4364
(2.88) (1.83) (1.09) (3.08) (1.82)
4825 5213 5725 3963 4486
(3.21) (2.04) (1.21) (3.43) (2.03)
4963 5362 5888 4069 4606
(3.56) (2.26) (1.34) (3.80) (2.25)
5098 5508 6048 4722
(3.92) (2.50) (1.48) (2.48)
5650 6205 4836
(2.74) (1.63) (2.72)
5790 6359 4948
(2.99) (1.78) (2.97)
5927 6509 5057
(3.26) (1.94) (3.24)
6061 6657 5164
(3.54) (2.10) (3.51)
6194 6802 5269
(3.83) (2.27) (3.80)
6944
(2.45)
7084
(2.64)
7222
(2.83)
7358
(3.03)
7492
(3.23)
7624
(3.44)
7754
(3.66)
7882
(3.89)
40" 52"
4215
(0.72)
4366
(0.83)
4513
(0.95)
4656
(1.07)
4794 5279
(1.20) (0.69)
4929 5427
(1.34) (0.77)
5060 5572
(1.48) (0.86)
5188 5713
(1.63) (0.95)
5313 5851
(1.79) (1.04)
5436 5986
(1.96) (1.14)
5556 6118
(2.13) (1.24)
5673 6247
(2.32) (1.34)
5788 6374
(2.51) (1.45)
5901 6498
(2.70) (1.57)
6012 6620
(2.91) (1.69)
6121 6741
(3.12) (1.81)
6229 6859
(3.34) (1.94)
6334 6975
(3.56) (2.07)
6438 7089
(3.80) (2.20)
7202
(2.34)
7313
(2.49)
Ratings 3