Comfort-Aire HKV300A - Manual (Page 47)

Installation, Operation & Maintenance HKV SERIES Heat Controller, LLC
46
Table 8: Typical Unit Operating Pressures and Temperatures
Table 9: Water Temperature Change Through Heat Exchanger
Unit Operating Conditions
Water Flow, gpm [l/m]
Rise, Cooling
°F, [°C]
Drop, Heating
°F, [°C]
For Closed Loop: Ground Source or
Closed Loop Systems at 3 gpm per ton
[3.9l/m per kw]
9-12 4-11
For Open Loop: Ground Water Systems at
1.5 gpm per ton [2.0l/m per kw]
18-23 7-20
Entering
Water
Temp F
Voltage
Cooling Heating
Suction Pres-
sure PSIG
Dis-
charge
Pressure
PSIG
Super-
heat
Sub-
cooling
Water
Temp
Rise F
Air
Temp
Drop
F DB
Suction
Pressure
PSIG
Dis-
charge
Pressure
PSIG
Super-
heat
Sub-
cooling
Water
Temp
Drop F
Air
Temp
Rise F
DB
30
1.5 60-69 297-321 9-15 6-14 7-10 18-23
2.3 63-72 301-325 9-15 6-14 5-8 19-23
3.0 67-76 305-329 9-15 6-14 4-6 21-24
50
1.5 128-130 227-249 10-14 12-20 21-23 21-26 88-98 329-360 8-14 5-17 10-13 26-28
2.3 128-130 213-234 11-17 10-18 15-17 21-26 93-103 334-365 8-14 5-17 7-11 27-30
3.0 124-131 199-219 12-24 8-16 9-11 21-26 97-108 339-371 8-14 5-17 5-8 27-31
70
1.5 131-136 311-334 7-12 11-20 20-22 20-25 117-129 359-394 9-14 7-18 13-19 31-34
2.3 130-135 297-323 8-11 10-16 14-17 20-25 126-136 369-409 9-14 7-18 10-15 32-36
3.0 130-138 283-318 11-14 7-13 9-12 20-25 133-145 378-425 9-14 7-18 7-10 34-37
90
1.5 134-140 388-428 7-10 10-15 18-21 20-25 158-169 397-441 11-17 3-17 17-20 37-41
2.3 133-139 370-406 8-10 9-13 13-17 20-25 167-179 407-452 11-17 3-17 13-16 38-42
3.0 131-138 353-383 8-10 7-12 9-12 20-25 176-190 418-492 11-17 3-17 9-11 39-42
110
1.5 139-152 485-520 5-10 9-19 18-20 19-24
2.3 138-146 469-497 6-10 7-17 13-16 19-24
3.0 137-144 449-475 7-10 6-14 9-12 19-24
*Based on Nominal 400 cfm per ton airflow and 70°F EAT htg and 80/67°F EAT cooling
**Cooling air and water numbers can vary greatly with changes in humidity
Subcooling is based upon the head pressure at compressor service port