Wilo Stratos Série Notice De Montage Et De Mise En Service page 52

ENGLISH
Unit type
Heating-/ventilation- and air conditio-
ning systems with a resistor in the gene-
rator/distributor circuit
sistance in the transfer part (heating
radiator + thermostatic valve)
Circulation systems for drinking water
with a resistor in the generator circuit
50% of the resistance in the ascanding
pipe
Heating systems
Circulation systems for drinking water
Heating-/ventilation- and air conditio-
ning systems
Circulation systems for drinking water
Heating systems
46
System conditions
1. Two-pipe systems with thermostatic/zone valves
and high consumer authority
25% of the re- H
x
Converted gravity systems
x
Retrofitting to large temperature spread (e.g.
x
long-distance energy)
Low pressure losses in the system parts through
x
which the total volume flows (boilers/refrigera-
ting machines, poss. heat exchangers, distribu-
tion line up to 1st junction)
2. Primary circuits with low pressure losses
3. Underfloor heating systems with thermostatic or
zone valves
4. Single-pipe systems with thermostatic or branch
shut-off valves
5. Circulation systems for drinking water with ther-
mostatic controlled branch shut-off valves
1. Two-pipe systems
Pump installed in the flow pipe.
x
Flow temperature controlled by atmospheric
x
conditions.With increasing flow temperature
the flow rate will be increased.
2. Single-pipe systems
Pump installed in the return pipe.
x
Constant flow temperature.With increased re-
x
turn temperature the flow rate will be lowered.
3. Primary circuits with condensing boiler
Pump installed in the return pipe. With increa-
x
sed return temperature the flow rate will be lo-
wered.
4. Circulation systems for drinking water with ther-
mostatic controlled branch shut-off valves or
constant flow rate.
With increased circulating temperature the flow
rate will be lowered.
1. Constant flow rate
1. All systems
Pump installed in the flow pipe.
x
Flow temperature will be lowered in light loads
x
periods (e.g. night).
Pump runs 24h without external control.
x
2m
N
Recommended
control system
p-c
p-T
Regulator-
mode
Night setback
mode
"Autopilot"