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Siemens Switzerland Ltd
User manual RVS61.843 CE1U2355en_02
HVAC Products 6 The settings in detail 23. November 2007
Twcool
3004
Cact
T
t
B91
Cpas Cact
B91 Source inlet sensor
Twcool Cooling setpoint
3004 SD ch’over cooling pas/act
Cact Active cooling mode
Cpas Passive cooling mode
T Temperature
t Time
This determines whether passive cooling is permitted when the compressor is in
operation (e.g. for DHW charging).
Passive cooling off
Passive cooling is locked during the time the compressor operates.
Passive cooling on
Passive cooling is released during the time the compressor operates.
This defines the behaviour of the condenser pump in passive cooling mode.
Condenser pump off
The condenser pump remains deactivated during passive cooling mode.
Condenser pump on
The condenser pump remains activated during passive cooling mode.
To obtain the return temperature setpoint for active cooling mode, the current flow
temperature setpoint (according to the cooling curve) is increased by the value of “Setp
red cooling mode” set here.
If the setting = 0 in the case of plants with return temperature control, the cooling curve
must be based on the return (plants with pump heating circuits and without buffer or
combi storage tanks).
During compressor
operation
In passive cooling mode
Setp red cooling mode
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