Cascade Control - REMEHA Gas 320 Ace Service Manual

Fig.24 Screed drying curve
50
35
T
20
2
0
0:00 0:00 0:00
10 9
4
d Number of days
T Heating set point temperature
1 Number of days on which the screed drying function
is activated (parameter CP470)
2 Screed drying start temperature (parameter CP480)
4.8.6

Cascade control

Fig.25 Cascade numbering
A
7734325 - v.07 - 22092022
1
0:00 0:00 0:00
8 7 6 5
With the HMI T-control mounted in the master boiler it is possible to
manage up to 7 boilers in cascade. The system sensor is connected to the
master boiler. All the boilers in the cascade are connected by an S-BUS
cable. The boilers are automatically numbered:
B C
There are two options for cascade control management:
The cascade control management can be changed with parameter NP006.
AD-3000964-01
Important
The settings for these temperatures must follow the screed
layer's recommendations.
Activation of this function via the parameter CP470 forces the
permanent display of the screed drying function and deactivates
all other regulator functions.
When the screed drying function is active on one circuit, all
other circuits and the domestic hot water circuit continue to run.
It is possible to use the screed drying function on circuits A and
B. The parameter settings must be made on the PCB that
controls the circuit concerned.
0:00 0:00 0:00
4 3 2
d
3 Screed drying stop temperature (parameter CP490)
4 Start of the screed drying function
5 End of the screed drying function, back to normal
running
Important
Every day at midnight, the screed drying start temperature set
point is recalculated and the remaining number of days on which
the screed drying function is running decreases.
A The master boiler is number 1.
B The first slave boiler is number 3 (number 2 does not exist).
C The second slave boiler is number 4; and so on.
Adding supplementary boilers successively (traditional control).
Adding supplementary boilers simultaneously (parallel control).
4 Installer instructions
3
0:00 0:00 0:00 0:00
1 x x
5
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21