PAW FC4.13, Manual For Specialised Craftsman

Page: 24 / 36

24
en
WARNING!
Scald danger!
Scalding may occur if T-disinf. set is adjusted to a value higher than
60 °C.
Note:
While the thermal disinfection is active, a suffi cient temperature in the
primary store and heat supply by the boiler must be ensured.
Î Make sure the store is suffi ciently heated and the boiler can supply
enough heat before disinfection begins.
3.5 Stratifi ed return
Main menu / Circulation / Stratifi ed return
Adjustment
channel
Description
Adjustment range /
selection Factory
setting
Stratifi ed
return
Activating the function Yes, No No
Type Stratifi ed return mode Thermostat, Difference Thermostat
T On
Switch-on temperature for the stratifi ed
return mode Thermostat
20 … 45 °C 35 °C
Hysteresis
Switch-off hysteresis for the stratifi ed re-
turn mode Thermostat
0.5 … 20.0 K 5.0 K
∆
T on
Switch-on temperature difference for the
stratifi ed return mode Difference
0.5 … 20.0 K 10.0 K
∆
T off
Switch-off temperature difference for the
stratifi ed return mode Difference
0.5 … 20.0 K 6.0 K
back
L'
R4
R1-R3 1 (1) A (100 ... 240) V~
4 (1) A 240 V~
4 (1) A 24V
R4
+VBus-
S1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
S2 S3 S4 S5 S6 S7 S8
Temp. Sensor
FlowRotor
N
Isolate mains before removing cover!
Vor Öffnen Gerät spannungslos schalten!
Use neutral conductor common terminal block
Neutralleiter-Sammelklemme benutzen!
Use PE Common terminal block
Schutzleiter-Sammelklemme benutzen
VFS/US
S9 S10
V40
PWM1
0-10V
PWM2
0-10V
PWM3
0-10V
PWM4
0-10V
17 18 19 20 22 24 26 28 30 31 32
R2 R3 R4 R1
dV
Circulation
PWM3
R3
PWM2
PWM1
S8
S6
S2
R2
S3
S5
S4
S1
S7
S9
R_pot.
free
The Stratifi ed return function can be used for keeping the temperature strat-
ifi cation inside the primary store from being destroyed while the circulation is
running. For this function, 2 different modes are available:
Thermostat mode (switching between two store zones or stores. Using the
T-CW sensor):
When the adjustable temperature T on is exceeded at theT-KW (S4) sensor, the
controller energises the relay for the stratifi ed return. The return is fed into the
upper store zone or the warmer store respectively.
When the temperature at the T-CW sensor falls below the limit temperature
(T on - hysteresis) , the relay is switched off. The return is fed into the lower
store zone or the cooler store respectively.
Note:
The 3-port valve has to be mounted such that it is normally open towards
the lower store zone or the cooler store respectively.
Difference mode (switching between two store zones or stores, using the
T-CWsensor and an additional store sensor):
When the temperature difference between the T-CW (S4) sensor and the store
sensor in the primary store (S5) exceeds the adjustable value
∆
T on the relay
for the stratifi ed return is energised. The return is fed into the upper store zone or
the warmer store respectively.
When the temperature difference between the T-CW sensor and the store sensor
of the primary store falls below the adjustable value
∆
T off, the relay is switched
off. The return is fed into the lower store zone or the cooler store respectively.