Nibe PCM S40 Installateurhandbuch Seite 20

HEATING/COOLING OPERATION
Värmeläge
The circulation pump (EQ1-GP10) only runs in cooling
operation. The factory setting for the circulation pump
Värmeläge
speed is 100%.
During heating operation (default) the mixing and revers-
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10
ing valves are closed as illustrated.
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10
Shuntventil
Mixing valve
Shuntventil
(QN18)
When the reversing valve is open as illustrated below
Kylläge
cooling is activated. The shunt opens and closes depend-
ing on temperature.
Kylläge
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10
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10
Mixing valve
Shuntventil
(QN18)
When cooling has been activated, heating operation is
Shuntventil
blocked for two hours (factory setting) to prevent self-
oscillation between cooling and heating. If necessary,
the setting can be changed in menu 1.30.5.
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10
0
10
0
Växelventil
Reversing valve
Växelventil
(QN12)
10
0
10
0
Reversing valve Växelventil
(QN12)
Växelventil
PCM S40/S42 | GB