Riello Condexa PRO 100, Installation, Technical And Maintenance Manual

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78
COMMISSIONING AND MAINTENANCE
Menu Par.
No.
Nr. dis-
played
Display
Description Range
Factory
setting
UM
Access
type
Category
M2 148
Power
Mode
Defines the cascade operation mode.
0 Disabled 1
Min burners 2
Max burners
2 I Cascade
M2 79
Max.
Setp.
Offset
Down
Defines the maximum decrease in the pri-
mary circuit's cascade set-point. Is based
on the primary circuit's probe reading.
0…40 2 °C I Cascade
M2 80
Max.
Setp.
Offset
Up
Defines the maximum increase in the pri-
mary circuit's cascade set-point. Is based
on the primary circuit's probe reading.
0…40 5 °C I Cascade
M2 81
Start
Mod.
Delay
Fact.
Defines the time in minutes from the
moment the demand is triggered until the
activation of the set-point increases or
decreases provided for by Par. 79 e 80.
0…60 60 Min. I Cascade
M2 82
Next
Module
Start
Rate
It defines the minimum power for at least
one of the modules in the cascade in order
for the next module to be switched on (if
the other conditions linked to Par. 75 and
77 are met).
10…100 80 % I Cascade
M2 83
Next
Module
Stop
Rate
It defines the maximum power for all the
modules in the cascade in order for the
last module on to be switched off (if the
other conditions linked to Par. 76 and 78
are met).
10…100 25 % I Cascade
M2 84
Module
Rotation
Interval
It defines the time interval (in days) after
which modules are rotated.
0…30 1 Days I Cascade
M2 149
First
Module
to Start
Establishes the number of the next mod-
ule to be rotated (this value is automati-
cally updated at each rotation).
1..16 1 I Cascade
M2 86 PID P
Defines the proportional term to change
the setpoint of the cascade module.
0…1275 50 O Cascade
M2 87 PID I
Defines the integral term to change the
setpoint of the cascade module.
0…1275 500 O Cascade
M2 150
PID Slew
Rate Up
Defines the speed (in °C/100 ms) with
which the set-point of individual mod-
ules is increased in the event the primary
circuit's set-point is not achieved (if the
value is set to zero, the change is con-
trolled by the PI of Par. 86 and87 without
restrictions).
0…25.5 1 O Cascade
M2 151
PID Slew
Rate Dn
Defines the speed (in °C/100 ms) with
which the set-point of individual modules
is decreased in the event the primary cir-
cuit's set-point is exceeded (if the value is
set to zero, the change is controlled by the
PI of Par. 86 and87 without restrictions).
0…25.5 1 O Cascade
M2 152
PwrMode2
Min Power
Defines the power value (in percentage
terms) against which the average power of
all on modules in cascade operation mode
must be compared (Par. 148 = 2).
0…100 20 % I Cascade
M2 153
PwrMode2
Hysteresis
Defines the extra power value (in percent-
age terms) compared to the average power
of all on modules in cascade operation
mode (Par. 148 = 2).
0…100 40 % I Cascade