ECL Comfort 210/310, A275/A375 Installation Guide - Danfoss ...

Installation Guide ECL Comfort 210 / 310, application A275 / A375
Reaction, in band (A375 applications) 11075
Circuit Setting range Factory setting
1 5 ... 6000 s 120 s
The set time (in seconds) determines the burner cut-in / cut-out when the
boiler / flow temperature is inside the ‘Band limit’ ID no. 11048.
Three conditions must be met in order to cut-in / cut-out the next burner step:
• the set time has elapsed after the latest burner cut-in / cut-out
• the boiler / flow temperature is inside the band limit
• the change in boiler / flow temperature has been less than 1 K / minute
(the temperature gradient is less than 1 K / minute)
5 ... 6000: Set the desired time.
The illustration shows a typical situation where the actual boiler
/ flow temperature is relatively close to the desired boiler / flow
temperature, i.e. inside the band limit.
Steps (A375 applications) 11073
Circuit Setting range Factory setting
1 1 ... 8 1
Number of burner steps to be controlled. See also ‘Sequence type’.
1 ... 8: Set the number of burner steps.
Temp.
Temp.
+
+
+ + +
+
Difference
Desired boiler / flow
temp.
Band limit
Actual boiler / flow
temp.
Time
Actual boiler / flow
temp.
Band limit
Desired boiler / flow
temp.
Difference
118 DEN-SMT/DK VI.GU.L1.02 Danfoss District Energy
Time