Specific Application Considerations
6.3 Cooling Tower/Boiler Systems
(Refer to Fig. 16)
These systems typically use a common loop temperature
maintained a
t 50°F to 100°F to ensure adequate cooling and
heating performance.
In the cooling mode, heat is rejected from the unit into the water
loop. A cooli
ng tower provides 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 elements. A
secondary heat exchanger (plate frame) between the unit and
the open cooling tower may also be used. It is imperative that all
air be eliminated from the closed loop side of the heat exchanger
to ensure against fouling. In the heating mode, heat is absorbed
from the water loop. A boiler can be utilized to maintain the loop
at the desired temperature.
NOTICE
Water piping exposed to extreme low ambient temperatures is
subject to freezing.
To ensure against leaks and possible heat exchanger fouling,
use an appropriate thread sealant.
Consult the dimensional drawings starting on page #88 for
piping sizes.
To avoid possible vibration, use flexible hoses between the unit
and the rigid
system. For unit isolation and unit water-flow
balancing, install ball valves in the supply and return lines.
Fig. 16 Typical Cooling Tower and Boiler System Setup
This diagram shows a typical installation
and is for illustration purposes only. Ensure
access to Heat Pump is not restricted.
[1] Line-Voltage Disconnect (unit)
[2] Low-Voltage Control Connection
[3] P/T Plugs (optional)
[4] Hose Kits
[5] Ball Valves
[6] Supply and Return Line of Central System
[7] Flex Duct Connection
[8] Hanging Bracket Assembly
[9] Threaded Rod
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CL Series Heat Pumps — 8733838716 (2024/05)
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