Resol DeltaSol SL - Page 65

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Flow sensor
VFS
VFS sensor position for heat quantity measurement with Grundfos Direct Sensor
TM
(for adjust-
ments see right-hand side)
Î Enable the heat quantity measurement option in the channel OHQM.
Î Select the type of ow rate detection in the channel FTYPE.
Flow rate detection type:
1 : Fixed ow rate value (owmeter)
2 : V40
3 : Grundfos Direct Sensor
TM
VFS
4 : Flowrotor
Note:
If the ow rate detection type V40, Grundfos Direct Sensor
TM
or Flowrotor
has been adjusted, the measuring range or the impulse rate respectively of
the sensor must be adjusted in the SENS menu (see page 66).
Note:
If a V40, a Grundfos Direct Sensor
TM
, or a Flowrotor is used as the ow rate
sensor (ow rate detection type 2, 3, or 4) and is then deactivated in the
SENS menu, the ow rate detection type will be set to 1 (owmeter) and
heat quantity measurement will be deactivated.
Heatquantitymeasurementwithxedowratevalue
The heat quantity measurement calculation (estimation) uses the difference between
the ow and return temperatures and the entered ow rate (at 100 % pump speed).
Î Adjust 1 in the channel FTYPE.
Î Read the ow rate (l/min) and adjust it in the FMAX channel.
Î Adjust the antifreeze type and concentration of the heat transfer uid in the
channels MEDT and MED%.
Note:
Heat quantity measurement is not possible in systems with 2 solar pumps.
Antifreeze type:
0 : Water
1 : Propylene glycol
2 : Ethylene glycol
3 : Tyfocor
®
LS / G-LS
HeatquantitymeasurementwithV40owmeter:
The heat quantity measurement uses the difference between the ow and return
temperatures and the ow rate transmitted by the owmeter.
Î Adjust 2 in the channel FTYPE.
Î Adjust the antifreeze type and concentration of the heat transfer uid in the
channels MEDT and MED%.
Heat quantity measurement with Grundfos Direct Sensor
TM
:
The heat quantity measurement uses the difference between ow and return tem-
perature and the ow rate transmitted by the VFS sensor.
Î Adjust 3 in the channel FTYPE.
Î Adjust the antifreeze type and concentration of the heat transfer uid in the
channels MEDT and MED%.
Heat quantity measurement with Flowrotor:
The heat quantity measurement uses the difference between the ow and return
temperatures and the ow rate transmitted by the Flowrotor.
Î Adjust 4 in the channel FTYPE.
Î Adjust the antifreeze type and concentration of the heat transfer uid in the
channels MEDT and MED%.
HQM sensors
The ow sensor as well as the return sensor can be selected for heat quatity
measurement.
Î In the channel SFHQM select the ow sensor.
Î In the channel SRHQM select the return sensor.
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