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4.2.3 TO SELECT A SETTING MODE
Type of system.
Relatively low system resistance
to heating/air conditioning.
Relatively high system resistance
to heating/air conditioning.
Constant system resistance to
heating/air conditioning
dP-c and dP-v settings can be combined with the AUT function (auto-learning).
40
System features
Two-tube
systems
thermostatic and/or area valves.
•
head less than 2 m.
•
Natural circulation.
•
With low load losses in
parts of the system where the total
quantity of water flows (boiler,
heat exchanger, distribution lines
until the first branch)
Primary circuits with low pressure
losses.
Radiating panel heating system
with thermostatic or area valves.
Single
tube
system
thermostatic valves.
Primary circuit pumps in systems
with low load losses in the primary
circuit.
Two-tube
systems
thermostatic and/or area valves.
x
head greater than 4m.
x
Very
long
distribution
lines.
x
Very narrow secondary
stop valves.
x
Differential
adjusters.
x
With elevated load losses
in parts of the system with
total water flows(boiler,
heat
exchanger,
distribution lines until the
first branch)
Primary circuit pumps in systems
with elevated load losses in the
primary circuit.
Constant load
Page 10 of 11
10
10 - GB -
Type of setting recommended
with
with
with
pressure
dP-c
dP-v
Frq
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