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AFFINITY LOW SILL SERIES INSTALLATION MANUAL
Operating Parameters
Entering Water
Water Flow
Temp °F
gpm/ton
1.5
30
3.0
1.5
50
3.0
1.5
70
3.0
1.5
90
3.0
2.3
110
3.0
Entering Water
Water Flow
Temp °F
gpm/ton
1.5
30
3.0
1.5
50
3.0
1.5
70
3.0
1.5
90
3.0
2.3
110
3.0
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
Air Limits
Min. Ambient Air
Rated Ambient Air
Max. Ambient Air
Min. Entering Air
Rated Entering Air db/wb
80.6/66.2
Max. Entering Air db/wb
Water Limits
Min. Entering Water
Normal Entering Water
Max. Entering Water
Suction Pressure
Discharge
psig
Pressure psig
100 - 115
115 - 125
133 - 148
129 - 144
139 - 154
137 - 152
143 - 158
141 - 156
143 - 158
141 - 156
Suction Pressure
Discharge
psig
Pressure psig
73 - 79
79 - 85
103 - 109
115 - 130
145 - 155
155 - 165
170 - 185
174 - 190
Cooling
Heating
(°F)
(°C)
(°F)
45
7.2
45
80
26.7
70
100
37.8
85
50
10.0
40
27/19
68
110/83
43/28.3
80
30
-1.1
20
50-110
10-43.3
30-70
120
48.9
90
Cooling
Superheat
170 - 190
17 - 26
150 - 170
20 - 29
225 - 245
8 - 11
185 - 205
8 - 11
300 - 320
6 - 10
250 - 270
6 - 10
360 - 380
6 - 10
330 - 350
6 - 10
360 - 380
6 - 10
440 - 460
6 - 10
Heating
Superheat
305 - 330
7 - 13
315 - 345
7 - 13
330 - 370
7 - 13
350 - 380
7 - 13
375 - 410
7 - 13
415 - 435
10 - 14
435 - 470
11 - 18
465 - 500
11 - 18
(°C)
7.2
21.1
29.4
4.4
20.0
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
26.7
operate at the minimum/maximum conditions on a regular basis. The operating
limits are dependant upon three primary factors: 1) water temperature, 2) return
-6.7
air temperature, and 3) ambient temperature. When any of the factors are at the
-1.1
minimum or maximum levels, the other two factors must be at the normal level for
32.2
proper and reliable unit operation.
36
Water Temp Rise
Subcooling
°F
10 - 14
18 - 22
7 - 11
8 - 10
7 - 11
18 - 22
6 - 10
8 - 10
6 - 10
18 - 22
6 - 10
8 - 10
6 - 10
18 - 22
6 - 10
8 - 10
6 - 10
18 - 22
6 - 10
8 - 10
Water Temp Drop
Subcooling
°F
7 - 11
7 -10
7 - 11
3 - 6
7 - 11
8 - 11
7 - 11
4 - 7
7 - 11
11 - 14
7 - 11
7 - 10
7 - 11
8 - 11
7 - 11
8 - 11
Air Temp Drop
°F DB
20 - 30
20 - 30
20 - 30
20 - 30
18 - 26
18 - 26
18 - 26
18 - 26
18 - 22
18 - 22
Air Temp Rise
°F DB
20 - 26
20 - 26
22 - 32
22 - 32
28 - 38
35 - 45
42 - 50
42 - 50
6/20/11
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