Carrier AQUAZONE 50RHC006-060 Series Product Data page 27

50RVC BLOWER PERFORMANCE WITH
THE MODULATING REHEAT OPTION
Coil Face Velocity
(fpm)
200
250
300
350
400
450
500
NOTE: For 50RVC units with reheat coil applications, calculate coil face velocity of the
entering air. From the table above find the external static pressure loss for the reheat
application. This loss includes the wet coil loss.
Example:
Reheat coil loss can be determined from the above table. Coil velocity (fpm) = Airflow
(cfm)/Face Area (sq ft).
1. 50RVC036 has a face area of 3.63 sq ft (see Physical Data table).
2. At 1,100 cfm, coil velocity (fpm) = 1,100/3.63 = 303 fpm.
3. From above table, it will be necessary to subtract 0.068 from the blower perfor-
mance external static pressure.
4. On medium speed, the 50RVC036 (without reheat — see blower table) can
deliver 1,100 cfm at 0.40 in. wg; with the reheat coil, it now delivers 1,100 cfm at
0.33 in. wg (includes adder for wet coil).
5. To compensate, high speed fan should be used to overcome pressure drop of
reheat coil.
50RVC BLOWER PERFORMANCE WITH WET COIL
COIL FACE VELOCITY
(fpm)
200
250
300
350
400
450
500
Example:
Wet coil loss can be determined from the above table. Coil velocity (fpm) = Airflow
(cfm)/Face Area (sq ft).
1. 50RVC036 has a face area of 3.63 sq ft (see Physical Data table).
2. At 1,100 cfm, coil velocity (fpm) = 1,100/3.63 = 303 fpm.
3. From above table, it will be necessary to subtract 0.080 from the blower perfor-
mance external static pressure.
4. On medium speed, the 50RVC036 (without dry coil — see blower table) can
deliver 1,100 cfm at 0.40 in. wg; with a wet coil, it now delivers 1,100 cfm at
0.32 in. wg.
5. If unit has reheat option, reheat coil pressure drop already includes adjustment
for wet coil (Reheat ESP Loss table).
REHEAT ESP LOSS
018, 024,030 036, 042
(in. wg) (in. wg)
0.060 0.049
0.070 0.055
0.090 0.068
0.124 0.091
0.164 0.129
0.252 0.221
0.380 0.350
WET COIL REDUCTION
(in. wg)
0.030
0.055
0.080
0.100
0.120
0.140
0.160
048, 060
(in. wg)
0.038
0.040
0.045
0.059
0.094
0.189
0.320
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