Danfoss ECL Comfort 310 Installation Manual page 5

Installation Guide
Heating (circuit 2):
This circuit works after same principles as circuit 1.
The flow temperature sensor S9 is the most important sensor.
By means of a week schedule (up to 3 'Comfort' periods / day),
heating circuit 2 can be in 'Comfort' or 'Saving' mode (two different
temperature values for desired room temperature). The motorized
control valve M3 controls the circuit.
The return temperature (S10) enables limitation as described
previously.
The circulation pump (P3) is ON at heat demand or at frost
protection.
The heating can be switched OFF when the outdoor temperature is
higher than a selectable value.
Heating circuit 2 can be connected after heating circuit 1. If so, the
desired flow temperature at S3 can be influenced by the desired
flow temperature at S9.
A376.1, A376.2 and A376.3:
If the measured room temperature does not equal the desired
room temperature, the desired flow temperature can be adjusted.
Danfoss District Energy
ECL Comfort 310, application A376
List of components: A376 in general, pumps and actuators
P1 DHW circulation pump, circuit 3
P2 Heating circulation pump, circuit 1
P3 Heating circulation pump, circuit 2
M1
Motorized control valve, circuit 3
M2
Motorized control valve, circuit 1
M3
Motorized control valve, circuit 2
(R4) (A376.9: Relay output, alarm)
R6 Relay output, alarm
A376.1 example a:
S 1
M2
S 5
M3
S10
M1
S 6
A376.1 example b:
S 1
M2
S 5
M1
S 6
VI.GU.B1.02
ECL 310
R6
S 3
P 2
S 9
P 3
S 4
P 1
ECL 310
R6
S 3
P 2
M3
S 9
P 3
S10
S 4
P 1
S 2
S 7
S 2
S 7
DEN-SMT/DK 5