19
Commissioning and adjusting
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.
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.
Emptying the water heater
Readjusting, heat medium side
The pump is
adjustable to adjust
heat medium flow.
Check the flow temperature and the return
temperature on the control 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
(16). A high difference could depend on a low heat
medium flow. A low difference indicates a high
heat medium flow.
Inspection
NOTE!
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Adjust heat medium pump
