Bosch EC Series - Cooling Tower;Boiler Systems

Specific Application Considerations
6.2 Cooling Tower/Boiler Systems
(Refer to Fig. 7)
These systems typically use a common loop temperature
maintai
ned at 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
cooling 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.
Fig. 7 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
2
3
4
5
6
[1] Supply and Return Line of Central System
[2] Ball Valves
[3] Hose Kits (optional)
[4] Line-Voltage Control Connection
[5] Low-Voltage Control Connection
[6] Flex Duct Connection
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EC Series Heat Pumps — 8733841499 (2024/05)