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6.2 Change of head setting
Change the pump head by turning the selector
switch on the terminal box as indicated in the
table below:
Setting
Result
Pump perform-
Factory
ance according
setting
to the heating
demand
(in 80-90% of all
single-family
houses).
Pump head is
reduced.
Pump head is
increased.
Pump running
at minimum per-
formance.
Pump running
at medium per-
formance.
Pump running
at maximum per-
formance.
System
Variable-load heating
system with normal
resistance, with or
without thermostatic
valves.
Variable-load heating
system with low
resistance, with or
without thermostatic
valves.
Variable-load heating
system with high re-
sistance, with or with-
out thermostatic
valves, or underfloor
heating system.
Also systems fitted
with a bypass valve.
Small constant-load
heating system.
Setting when adjust-
ing a bypass valve.
Medium-sized
constant-load heating
system.
Large constant-load
heating system.
Setting when venting
the system.
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