Adjusting Setpoint - Riello TAU Unit 140 Installation And Maintenance Manual

4.3.12

Adjusting setpoint

Adjusting setpoint with sensor on primary circuit (SS)
Through setting the following parameters you can manage automatically decreasing/increasing the setpoint, if necessary, based
on the value detected by the primary circuit sensor (SS). The setpoint will be decreased/increased after the time set in Par. 81 has
elapsed.
Reference Menu:
M2 Cascaded module configuration menu
M3 Cascaded boiler configuration menu
Menu Par. No.
Max. Setp.
79
Max. Setp.
80
M2
Start Mod.
81
Delay Fact.
86
87
Adjusting setpoint with sensor on secondary circuit (SC)
Through setting the following parameters you can manage automatically decreasing/increasing the setpoint, if necessary, based
on the value detected by the secondary circuit sensor (SC). The setpoint will be decreased/increased after the time set in Par. 171 has
elapsed.
Menu Par. No.
Max. Setp.
169
Max. Setp.
170
M3 Start Mod.
171
Delay Fact.
176
177
Nr. dis-
played Description
Display
Defines the maximum decrease in the
cascade setpoint on the primary circuit.
Offset
It is based on the reading of the prima-
Down
ry circuit sensor (SS).
Defines the maximum increase in the
cascade setpoint on the primary circuit.
Offset Up It is based on the reading of the prima-
ry circuit sensor (SS).
Defines the time in minutes from the
moment the demand is triggered until
the activation of the set-point increas-
es or decreases provided for by Par. 79
e 80.
Defines the proportional term to
PID P change the setpoint of the cascade
module.
Defines the integral term to change the
PID I
setpoint of the cascade module.
Nr. dis-
played Description
Display
Defines the maximum decrease in the
cascade setpoint on the primary circuit.
Offset
It is based on the reading of the sec-
Down
ondary circuit sensor (SC).
Defines the maximum increase in the
cascade setpoint on the primary circuit.
Offset Up It is based on the reading of the sec-
ondary circuit sensor (SC).
Defines the time in minutes from the
moment the request is triggered until
the activation of the set-point increas-
es or decreases provided for by Par.169
e 170.
Defines the proportional term to
change the set-point of the cascade
PID P
module based on the secondary cir-
cuit's temperature.
Defines the integral term to change the
PID I set-point of the cascade module based
on the secondary circuit's temperature.
CONFIGURATION OF CASCADED THERMAL UNITS
Access type:
I Installer
O Manufacturer
Range
0...40
0...40
0...60
0...1275
0...1275
Range
0...40
0...40
0...60
0...1275
0...1275
119
Default Access
UM
setting type
2 °C
5 °C
60 Min.
50
500
Default Access
UM
setting type
2 °C
5 °C
40 Min.
25
1000
I
I
I
O
O
I
I
I
O
O