Geostar Arbor Base Series, Installation Manual

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37
ARBOR BASE SERIES INSTALLATION MANUAL
Operating Parameters
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 dependent 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.
Entering Water
Temp °F
Water Flow
GPM/ton
Cooling
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
Suction
Pressure psig
Discharge
Pressure 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
5/1/11