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Manual 2100-738A
Page
59 of 71
For complete information on water well systems and
lake and pond applications, refer to manual 2100-078
available from your distributor.
COOLING TOWER/BOILER
APPLICATION
The cooling tower and boiler water loop temperature is
usually maintained between 50°F to 100°F to assure
adequate cooling and heating performance.
In the cooling mode, heat is rejected from the unit
into the source water loop. A cooling tower provides
evaporative cooling to the loop water thus maintaining
a constant supply temperature to the unit. When
utilizing open cooling towers chemical water treatment
is mandatory to ensure the water is free from corrosive
minerals.
It is imperative that all air be eliminated from the
source closed loop side of the heat exchanger to ensure
against fouling.
TABLE 13
Water Flow and Pressure Drop
WARNING
Thin ice may result in the vicinity of the
discharge line.
CAUTION
Water piping exposed to extreme low ambient
temperatures are subject to freezing.
In the heating mode, heat is absorbed from the source
water loop. A boiler can be utilized to maintain the
loop at the desired temperature. In milder climates a
“flooded tower” concept is often used. This concept
involves adding makeup water to the cooling tower
sump to maintain the desired loop temperature.
Units are equipped with double O-ring (female pipe
thread) fittings. Consult the specification sheets
for sizes. Teflon tape sealer should be used when
connecting to the unit to ensure against leaks and
possible condenser fouling. Do not overtighten the
connections. Flexible hoses should be used between
the unit and the rigid system to avoid possible vibration.
Ball valves should be installed in the supply and
return lines for unit isolation and unit water flow rate
balancing.
Pressure/temperature ports are recommended in both
supply and return lines for system flow balancing.
Water flow can be accurately set by measuring the
refrigerant to water heat exchangers water side pressure
drop. See Table 13 for water flow and pressure drop
information.
GPM
QW2S3 & QW3S3
QW4S3
QW5S3
PSID
Ft. Hd.
PSID
Ft. Hd.
PSID
Ft. Hd.
3
0.1
0.23
4
0.6
1.38
0.9
2.08
5
3.1
7.26
1.4
3.23
6
5.7
13.19
3.6
8.39
7
8.3
19.13
7.3
16.80
6.7
15.52
8
10.9
25.07
10.9
25.21
10.0
22.97
9
13.4
31.00
14.6
33.61
13.2
30.42
10
18.2
42.02
16.4
37.87
11
21.9
50.43
19.6
45.32
12
25.5
58.83
22.9
52.77
13
29.1
67.24
26.1
60.22
14
32.8
75.65
29.3
67.67
15
32.6
75.12
16
35.8
82.57
17
39.0
90.02
18
Summary of Contents for Q-TEC Series
Page 16: ...Manual 2100 479 Page 6 of 11 FIGURE 1 TYPICAL AIR CONDITIONING SYSTEM COOLING CYCLE MIS 369...
Page 17: ...Manual 2100 479 Page 7 of 11 FIGURE 2 TYPICAL HEAT PUMP SYSTEM COOLING CYCLE MIS 368...
Page 22: ......
Page 32: ......
Page 92: ...Manual 2100 738A Page 60 of 71 FIGURE 36 Water Source Heat Pump Cooling Cycle...
Page 93: ...Manual 2100 738A Page 61 of 71 FIGURE 37 Water Source Heat Pump Heating Cycle...
Page 105: ......
Page 107: ......
Page 111: ......
Page 125: ...Manual 2110 1558 Page 14 of 23 OPTIONAL CLIMATE CONTROLS SEXP 560 3 2 1...
Page 127: ...Manual 2110 1558 Page 16 of 23 OPTIONAL CLIMATE CONTROLS 1 3 2 4 SEXP 639 5...
Page 129: ...Manual 2110 1558 Page 18 of 23 OPTIONAL CLIMATE CONTROLS 6 4 2 3 1 5 SEXP 646...
Page 131: ...Manual 2110 1558 Page 20 of 23 OPTIONAL CLIMATE CONTROLS SEXP 645 4 3 2 5 6 1...
Page 135: ......