Return Connection Option - PAW Friwa Manual Del Usuario

Friwa
2.5

Return connection option

Return connection
During low demand or circulation, high return temperatures
can be generated. These can be fed to the buffer store at
a higher temperature level using the 3 port valve. This will
avoid mixing with the lower cooler zone.
When the difference between return temperature (T-R) and
store reference temperature (T-St) exceeds the adjusted
switch-on difference (dT-Rd on), relay RC is energised.
T- St
VR
P1 loading pump
Pc circulating pump (optional)
T-HW sensor - hot water temperature
Main menu:
Meas. values
Reports
Balances
Settings
Options
Manual operation
User code
Expert
24
|
T- S
P1
T- R
--> 1. Options
Options
Parameter
Return Div.
--> 2. Adjustment values
Settings
Parameter
DT-Rd on
DT-Rd off
--> 3. Measured values
Meas. Vaules
Parameter
T-St
T-R
Return valve Off/On
--> 4. Check function
It is deactivated when the loading circuit is not operated
or when the difference falls below the adjusted switch-off
difference (dT-Rd off).
T- HW
dV
T- CW
T-CW sensor - cold water temperature
T-S sensor - heat source temperature
dV fl ow rate - measuring instrument
Range Description
On
Off/On,
default is Off
Range Description
switch-on difference - return valve
0,0 ... 25,0 K,
default is 5,0 K
switch-off difference - return valve
0,5 ... 10,0 K,
default is 5,0 K
Range Description
store temperature
-50 ... 250 °C
return temperature
-50 ... 250 °C
status of return connection valve (RC)
Pc
CW