Boiler - Danfoss ECL Comfort 210 Installation Manual

Installation Guide

5.5 Boiler

Difference
Circuit
1
The burner is switched ON and OFF to maintain the desired boiler
temperature. Set the difference between the cut-in and cut-out temperature.
OFF:
(Only in A275 applications):
The boiler temperature difference is set
automatically according to the momentary load of
the boiler and the temperature conditions in the
heating system.
1 ... 50 K: The boiler temperature difference is set to a
fixed value according to the boiler manufacturer
specification.
Max. T limit
Circuit
1
A275 applications:
If the boiler / flow temperature exceeds the set value, the burner is cut-out.
A375 applications:
If the boiler / flow temperature exceeds the set value, burner steps are
cut-out in intervals of 5 sec.
40 ... 150: Set the limitation temperature.
Min. ON time
Circuit
1
Set the minimum operation time (minutes) for the burner.
1 ... 9 m: The boiler can be protected against condensation /
corrosion caused by insufficient heat-up time at each
burner start. The protection is obtained by a minimum
operation time of the burner. With this setting the boiler
temperature difference (ID no. 11046 'Difference') is
overruled.
114 DEN-SMT/DK
ECL Comfort 210 / 310, application A275 / A375
11046
Factory setting
Setting range
(OFF /) 1 ... 50 K
11049
Setting range Factory setting
40 ... 150 °C 90 °C
11071
Setting range Factory setting
0 ... 9 m
Temp.
8 K
The boiler temperature difference is symmetrical around the desired
boiler temperature, i.e. half the value is above and half the value is
below this temperature.
'Max. T limit' overrules 'Min. ON time'.
'Min. ON time' is overruled by 'Max. T limit'.
0 m
VI.GU.L1.02
Actual boiler / flow
temp.
Difference
Desired boiler / flow
temp.
Time
Danfoss District Energy