WaterFurnace Versatec Ultra - Manual (Page 45)

45
VERSATEC ULTRA SERIES INSTALLATION MANUAL
Operating Parameters
Entering
Water Temp
°F
Water Flow
gpm/Ton
Cooling -- No Hot Water Generation
Suction Pressure
PSIG
Discharge Pressure
PSIG
Superheat Subcooling
Water Temp Rise
°F
Air Temp Drop
°F DB
30
1.5 100-115 170-190 17 - 26 10 - 14 18 - 22 18 - 22
3.0 95-110 150-170 20 - 29 7 - 11 8 - 10 18 - 22
50
1.5 133 - 148 205 - 225 17 - 26 10 - 14 18 - 22 18 - 22
3.0 129 - 144 185 - 205 20 - 29 7 - 11 8 - 10 18 - 22
70
1.5 139 - 154 280 - 300 8 - 11 8 -12 18 - 22 18 - 22
3.0 137 - 152 250 - 270 9 - 12 7 - 11 8 - 10 18 - 22
90
1.5 143 - 158 360 - 380 8 - 11 9 - 13 18 - 22 16 - 20
3.0 141 - 156 330 - 350 9 - 12 8 - 12 8 - 10 16 - 20
110
2.3 143 - 158 360 - 380 8 - 11 9 - 13 18 - 22 16 - 20
3.0 141 - 156 440-460 9 - 12 8 - 12 8 - 10 16 - 20
Entering
Water Temp
°F
Water Flow
gpm/Ton
Heating -- No Hot Water Generation
Suction Pressure
PSIG
Discharge Pres-
sure PSIG
Superheat Subcooling
Water Temp Drop
°F
Air Temp Rise
°F DB
30
1.5 73 - 79 279 - 304 7 - 13 2 - 6 7 -10 18 - 24
3.0 79 - 85 285 - 310 8 - 14 2 - 6 3 - 6 20 - 26
50
1.5 103 - 109 308 - 333 8 - 12 4 - 8 8 - 11 20 - 26
3.0 110 - 116 315 - 340 9 - 13 4 - 8 4 - 7 22 - 28
70
1.5 140 - 146 330 - 365 10 - 14 7 - 11 11 - 14 26 - 32
3.0 146 - 153 340 - 375 10 - 14 7 - 11 7 - 10 28 - 34
90
1.5 170-177 425-460 14-18 12-16 8-11 42-50
3.0 174-181 435-470 14-18 12-16 8-11 42-50
110
2.3
3.0
11/10/09 NOTES: Cooling performance based on entering air temperatures of 80°F DB, 67°F WB.
Heating performance based on entering air temperature of 70°F DB.
Operating Limits
Operating Limits
Cooling Heating
(°F) (°C) (°F) (°C)
Air Limits
Min. Ambient Air 45 7.2 45 7.2
Rated Ambient Air 80 26.7 70 21.1
Max. Ambient Air 100 37.8 85 29.4
Min. Entering Air 50 10.0 40 4.4
Rated Entering Air db/wb 80.6/66.2 27/19 68 20.0
Max. Entering Air db/wb 110/83 43/28.3 80 26.7
Water Limits
Min. Entering Water 30 -1.1 20 -6.7
Normal Entering Water 50-110 10-43.3 30-70 -1.1
Max. Entering Water 120 48.9 90 32.2
NOTE: Minimum/maximum limits are only for start-up conditions, and
are meant for bringing the space up to occupancy temperature. Units
are not designed to operate at the minimum/maximum conditions on
a regular basis. The operating limits are dependant upon three primary
factors: 1) water temperature, 2) return air temperature, and 3) ambient
temperature. When any of the factors are at the minimum or maximum
levels, the other two factors must be at the normal level for proper and
reliable unit operation.