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Operation and Maintenance
ThermoCooler HP
DSTCH.191101.01.EN
Continuous product development may give rise to specification changes without notice.
2 Technical description
2.1 Cooling/heating pump ThermoCooler HP
ThermoCooler HP is a series of integrated, speed controlled reversible heat
pumps with stepless cooling and heating power.
Cooling circuit function
The reversible heat pump has four basic components: evaporator, condenser,
expansion valve and compressor.
A 4-way valve is used to shift between cooling and heating.
For cooling, the 4-way valve is in cooling mode. For heating, the 4-way valve
is in heating mode. This means that the coil, which was a condenser in cooling
mode, becomes an evaporator in heating mode. Conversely, the evaporator
becomes a condenser.
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3
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11
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10
16
18
19
17
4
1
5
6
2
12
15
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Flowchart for cooling mode, reversible heat pump (size 100-240)
ThermoCooler HP
cooling/heating pump
Rotor
Fan and filter section
(extract air fan)
Fan and filter section
(supply air fan)
1 Compressor
2
Suction gas sensor (temp after evaporator)
3
Pressure sensor, low pressure
4
Expansion valve
5
Frequency inverter
6
4-way valve
7
High pressure switch
8
Pressure sensor, high pressure
9
Temperature sensor, hot gas
10
Temperature sensor liquid line cooling
11
Temperature sensor liquid line heating
12
Temperature sensor sump
13
Extract air coil (condenser/evaporator)
14
Supply air coil (condenser/evaporator)
15
Suction gas separator
16
Exhaust air
17
Extract air
18
Outdoor air
19
Supply air
