Appendix K - Flowcharts - Riello Array AR 399 SE Installation, Operation And Service Manual

APPENDIX
APPENDIX RECYCLING AND DISPOSAL

APPENDIX K - FLOWCHARTS

SINGLE MODULE
NO
NO
YES
(*) see Burner ignition sequence on next page.
NO
Burn: Based on delta of Supply sensor
and Setpoint PID output is determined
Is the supply
Burner off,
Temp Above the
Post pump
module setpoint
+ Hyst Up?
YES
Is Delta between
supply and return
larger than max
delta?
YES
Post Pump
timer finished
NO
or no longer
priority
Module in
Stop pump
Stand-by
NO
Demand for Post pump
NO
module
YES
Start pump
Supply
Temp
YES Start fan
lower than
Setpoint
Module
CH flow
Start burner (*)
is above
min_flow?
BURN
Post burn
YES
YES
78 78
YES
ready
Blocking
NO
error
Demand
NO
Still active?
YES
Is the supply
Temp Above the
module setpoint
+ Hyst Up?
NO
Is Delta between
supply and return
NO
larger than max
delta?