Danfoss ECL Comfort 210 Installation Manual page 6

Installation Guide
DHW (circuit 2):
By means of a week schedule (up to 3 Comfort periods / day), the
DHW circuit can be in 'Comfort' or 'Saving' mode (two different
temperature values for desired DHW temperature).
If the measured DHW temperature (S6) is lower than the desired
DHW temperature, the heating circulation pump (P1) is switched
OFF and the DHW pump (P2) is switched ON. The motorized
control valve (M1) is controlled in order to maintain the charging
temperature at S3.
The charging temperature is typically 10-15 degrees higher than
the desired DHW temperature.
DHW tank with 1 temperature sensor:
When the measured DHW temperature (S6) gets higher than
the desired DHW temperature, the DHW pump (P2) is switched
OFF. The motorized control valve (M1) will hereafter maintain the
desired flow temperature in the heating circuit.
DHW tank with 2 temperature sensors:
When the measured DHW temperature (S6) gets higher than the
desired DHW temperature and the lower temperature (at S8)
gets higher than the cut-out temperature, the DHW pump (P2) is
switched OFF. The motorized control valve (M1) will maintain the
desired flow temperature in the heating circuit.
If the installation has a changeover valve (P2 / M2), also called
priority-valve, between the heating and the DHW circuits, the
changeover valve is activated at DHW heating demand. The
circulation pump (P1) is ON when heating the DHW.
Parallel mode in two-pump applications:
If the charging temperature has a value close to the desired flow
temperature in the heating circuit, the circulation pump (P1) in the
heating circuit will not be switched OFF during DHW heating.
The return temperature (S5), when the DHW heating is active, can
be limited to a fixed value.
An anti-bacteria function is available for activation on selected
days of the week.
The DHW circuit can be connected primarily and the valve 'P2 /
M2' operates as ON / OFF valve.
The DHW circulation pump (P3) has a week schedule for up to 3
ON-periods / day.
6 DEN-SMT/DK
ECL Comfort 210 / 310, application A237 / A337
A237.1 / A337.1 example a:
S 1
M1
S 5
A237.1 / A337.1 example b:
S 1
M1
S 5
A237.1 / A337.1 example c:
S 1
M1
S 5
P2 / M 2*
A237.1 / A337.1 example d:
S 1
S 5
VI.LG.R1.02
ECL 210 / (310) S 2
R4 / (R6)
P 1
S 3
P 2
ECL 210 / (310) S 2
R4 / (R6)
S 3
P 1
P2 / M2*
S 2
ECL 210 / (310)
R4 / (R6)
S 3
P 1
S 6
S 8
S 2
ECL 210 / (310)
R4 / (R6)
M1
S 3
P 1
P 2
Danfoss District Energy
P 3