Riello Array AR 399 SE Installation, Operation And Service Manual page 80

APPENDIX
APPENDIX RECYCLING AND DISPOSAL
MODULE CASCADE (STAND-ALONE BOILER)
Hold off
demand
YES
Post pump
Remove
YES
module fast
Open Air
NO
damper
Air damper
NO
open?
YES
Power
Balancing
Boiler in
Stop boiler
stand-by
pump
Boiler error
Present?
NO
NO
Boiler Heat
NO
ready Demand?
YES
Calculate Start boiler
boiler pump
setpoint
Boiler
Temperature
YES
higher than
setpoint
NO
First module
NO
active?
YES
Boiler Temp
higher than
NO
setpoint remove
fast?
Boiler Temp
NO
lower than
Setpoint add
YES
Add module
See the flow of Add
module of how a
module is added
80 80
Locking error
YES
Locking
YES
error?
NO
Blocking
error
Clear demand Remove all
active modules
Turn First module on
immediately
Boiler Temp
Remove
higher than
YES
module
setpoint
remove
NO
Boiler Temp
lower than
Setpoint add
fast
YES
Add module
fast