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19
Adjust the brine and
the heating medium pump
1). Read the brine temperatures on the panel. The dif-
ference between these two temperatures should
be 2—5 °C when the system has come into bal-
ance. Adjust the flow with the knob on the brine
pump (32). A high difference indicates a low brine
flow. A low difference indicates a high brine flow.
The
pump
adjustable to adjust
brine flow.
2). Check
the
flow
return temperature on the panel. The difference
between these two temperatures, with floating
condensing, should be 5 — 10 °C when the house
is being heated without additional heat. Adjust the
flow with the knob on the heating medium pump
(37). A high difference could depend on a low heat
medium flow. A low difference indicates a high
heat medium flow.
The
pump
adjustable to adjust
heat medium flow.
Commissioning and adjusting
is
temperature and the return
is
Inspection
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Readjusting, heat medium side
Air is initially released from the hot water and venting
may be necessary. If bubbling sounds can be heard
from the heat pump, the entire system requires further
venting. When the system has stabilised (correct
pressure and all the air removed) the heating controls
can be set at the required values.
Readjusting, collector side
Check the fluid level in the level vessel (85). If the lev-
el has dropped, close the valve under the vessel. You
can then fill through the connection at the top of the
vessel. After filling, open the valve again.
To raise the pressure, close the valve on the incoming
main pipe when the brine pump (KBP) is running and
the level vessel (NK) is open, so that water is drawn in
from the vessel.
Emptying the water heater
The siphon principle is used to empty the water
heater. This can be done either via the drain valve on
the incoming cold water pipe or by inserting a hose
into the cold water connection.
NOTE!
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