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CASCADE CONNECTION
Par.
Display visualis-
Menu
Description
No.
ation
Defines the maximum increase in the primary
Max. Setp. Offset
M2
80
circuit's cascade set-point. Is based on the
Up
primary circuit's probe reading.
Defines the time in minutes from the moment
Start Mod. Delay
the demand is triggered until the activation of
M2
81
Fact.
the set-point increases or decreases provided
for by Par. 79 e 80.
It defines the minimum power for at least one
Next Module Start
of the modules in the cascade in order for the
M2
82
Rate
next module to be switched on (if the other
conditions linked to Par. 75 and 77 are met).
It defines the maximum power for all the
Next Module Stop
modules in the cascade in order for the last
M2
83
Rate
module on to be switched off (if the other
conditions linked to Par. 76 and 78 are met).
Module Rotation
It defines the time interval (in days) after
M2
84
Interval
which modules are rotated.
Establishes the number of the next module to
First Module to
M2
149
be rotated (this value is automatically updated
Start
at each rotation).
Defines the proportional term to change the
M2
86
PID P
setpoint of the cascade module.
Defines the integral term to change the set-
M2
87
PID I
point of the cascade module.
Defines the speed (in °C/100 ms) with which
the set-point of individual modules is in-
creased in the event the primary circuit's
M2
150
PID Slew Rate Up
set-point is not achieved (if the value is set to
zero, the change is controlled by the PI of Par.
86 and87 without restrictions).
Defines the speed (in °C/100 ms) with which
the set-point of individual modules is de-
creased in the event the primary circuit's set-
M2
151
PID Slew Rate Dn
point is exceeded (if the value is set to zero,
the change is controlled by the PI of Par. 86
and 87 without restrictions).
Defines the power value (in percentage terms)
PwrMode2 Min
against which the average power of all on
M2
152
Power
modules in cascade operation mode must be
compared (Par. 148 = 2).
Defines the extra power value (in percentage
PwrMode2 Hys-
terms) compared to the average power of all
M2
153
teresis
on modules in cascade operation mode (Par.
148 = 2).
Post-Pump Pe-
Defines overrun time in seconds at the end of
M2
154
riod
the cascade heat demand.
Defines the temperature (detected by the pri-
mary sensor) below which the thermal module
circulator and the system circulator (with
cascade configuration) activate. If the tem-
perature of the primary sensor falls another 5
M2
155
Frost Protection
degrees below the value set by Par. 155, then a
request to activate the cascade is generated.
When the temperature of the primary sensor
reaches the value defined by Par. 155 increased
by 5 degrees, then the request ceases and the
cascade returns to stand-by mode.
Factory
Access
Range
UM
setting
type
0...40
5
°C
I
0...60
60
Min.
I
10...100
80
%
I
10...100
25
%
I
0...30
1
Days
I
1..16
1
I
0...1275
50
O
0...1275
500
O
0...25.5
1
O
0...25.5
1
O
0...100
20
%
I
0...100
40
%
I
0...255
60
Sec.
I
10...30
15
°C
I
98
Par.
Display visualis-
Category
Menu
No.
ation
Cascade
M3
73
Boiler Address
Cascade
Max. Setp. Offset
M3
169
Down
Max. Setp. Offset
M3
170
Up
Cascade
Start Mod. Delay
M3
171
Fact.
Cascade
M3
176
PID P
Cascade
M3
177
PID I
Cascade
M3
178
PID Slew Rate Up
Cascade
Cascade
M3
179
PID Slew Rate Dn
Cascade
M4
97
Model
Cascade
M2
205
Dep. Zone Control
Cascade
Next Boiler Start
M3
158
Delay
Cascade
Next Boiler Off
M3
159
Delay
Cascade
Delay Quick Start
M3
160
Next
Next Quick Stop
M3
161
Delay
Cascade
M3
167
Number of boilers
Description
Range
Managing,
Defines the manner with which the thermal
Stand-
module is addressed.
alone,
Dependent
Defines the maximum decrease in the primary
circuit's cascade set-point. Is based on the
0...40
secondary circuit's probe reading.
Defines the maximum increase in the primary
circuit's cascade set-point. Is based on the
0...40
secondary circuit's probe reading.
Defines the time in minutes from the moment
the request is triggered until the activation of
0...60
the set-point increases or decreases provided
for by Par.169 e 170.
Defines the proportional term to change the
set-point of the cascade module based on the
0...1275
secondary circuit's temperature.
Defines the integral term to change the set-
point of the cascade module based on the
0...1275
secondary circuit's temperature.
Defines the speed (in °C/100 ms) with which
the set-point of individual modules is in-
creased in the event the secondary circuit's
0...25.5
set-point not reached (if the value is set to
zero, the change is controlled by the PI of Par.
176 and 177 without restrictions).
Defines the speed (in °C/100 ms) with which
the set-point of individual modules is de-
creased in the event the primary circuit's set-
0...25.5
point is exceeded (if the value is set to zero,
the change is controlled by the PI of Par. 176
and 177 without restrictions).
Allow to set the values of Par. from 116 to 128
through some pre-set values which define the
1...2/8...9
configuration of the inlets and outlets of the
module.
Enables the control of the additional heating
zone managed by the thermal module.
0...1
0 = Disabled
1 = Enabled
This defines the standby time in seconds for
the next boiler in the cascade of cascades to
0...1275
start up, in normal start mode.
This defines the standby time in seconds for
the last boiler which is switched on in the
0...1275
cascade of cascades to switch off, in normal off
mode.
This defines the standby time in seconds for
the next boiler in the cascade of cascades to
0...1275
start up, in quick start mode.
This defines the standby time in seconds for
the last boiler which is switched on in the
0...1275
cascade of cascades to switch off, in quick off
mode.
This defines the number of boilers in a cas-
1...8
cade of cascades.
99
CASCADE CONNECTION
Factory
Access
UM
Category
setting
type
Stand-
I
Cascade
alone
2
°C
I
Cascade
5
°C
I
Cascade
40
Min.
I
Cascade
25
O
Cascade
1000
O
Cascade
1
O
Cascade
1
O
Cascade
I
General
0
U
General
1275
Sec.
I
Cascade
1275
Sec.
I
Cascade
400
Sec.
I
Cascade
240
Sec.
I
Cascade
1
I
Cascade
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