System information

ClimateMaster Geothermal Heat Pump Systems
39
Residential Products Technical Guide
Table 10: Blower Performance Data - TS Units With ClimaDry
®
II (PSC Motor)
ClimaDry
®
II
Coil Face
Velocity
FPM
TSH/V/D with Reheat ESP Loss
TSH/V/D
018
In. of Water
TSH/V/D
024, 030
In. of Water
TSH/V/D
036
In. of Water
TSH/V/D
042, 048
In. of Water
TSH/V/D
060, 070
In. of Water
200 0.037 0.033 0.031 0.028 0.026
250 0.052 0.046 0.042 0.038 0.034
300 0.077 0.066 0.059 0.051 0.044
350 0.113 0.096 0.085 0.073 0.061
400 0.181 0.160 0.145 0.131 0.117
450 0.242 0.226 0.215 0.205 0.194
500 0.360 0.345 0.335 0.326 0.316
For TS units with ClimaDry
®
II Reheat coil applications, calculate face velocity of the entering air.
From the table above, fi nd ESP for Reheat application.
The loss includes wet coil loss.
Example:
Reheat coil loss can be determined from the above table. Coil velocity (FPM) = Airfl ow (CFM)/Face Area (sq. ft.)
1) TSH036 has a face area of 4.86 sq. ft. (see physical data table in I.O.M.).
2) At 1,100 cfm, coil velocity (FPM) = 1,100/4.86 = 226 FPM
3) From above table, it will be necessary to subtract 0.037 from the blower performance ESP.
4) On medium speed, the TSH036 (without reheat - see blower table) can deliver 1,100 CFM at 0.28 in. wg. with the standard PSC motor;
with the reheat coil, it now delivers 1,085 CFM at 0.28 in. wg. or 1,100 CFM at 0.24 in. wg.
5) If the decrease in airfl ow is acceptable, no changes are necessary. Otherwise, high speed fan should be used to overcome the pressure
drop of the reheat coil.