NOTICE
In the case of LWD units the ow is monitored while the
pump is running. If the ow is not ok, the heat pump does
not start up and no error is displayed. To this end, check
the ASD input, if it is not set to ON the ow is too low.
page 14, “Query inputs“
The selection possibility for the heat source for SWP:
NOTICE
For SWP it is necessary to select whether water or brine
is to be used as the heat source uid, otherwise the unit
doesn’t work. The set uid can be viewed under System
Settings and can be changed from Customer Service ac-
cess level. TWQ-Min can be changed using the customer
service access, if brine is selected. For Low pressure cut-o
value with water: 7 bar. For Low pressure cut-o value with
brine: 4 bar.
Brine
This setting must be selected if the heat pump is opera-
ted with a brine - water mixture. Whether probes or sur-
face collectors are used is irrelevant.
Water |/| Brine
This setting must be selected if the heat pump is opera-
ted with an intermediate heat exchanger, and water is
used as the heat source medium on the primary side and
a brine-water mixture is used on the secondary side.
Water |/| Water:
This setting must be selected if the heat pump is opera-
ted with an intermediate heat exchanger and water is
used as the heat source medium on the primary and on
the secondary side. For the water/water setting the heat
source inlet temperature must be at least 7°C or higher.
Further Informations: page 30, “Startup guide“ and
page 30, “Startup guide parameters back“
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