Installation Guide
ECL Comfort 210 / 310, application A214 / A314
The advanced heating application
A314.9
is very flexible. These
are the basic principles:
Heating with room temperature and air quality control
Typically, the heating temperature is adjusted according to your
requirements. The air duct temperature sensor S3 is the most
important sensor. The desired temperature at S3 is set in the ECL
Comfort controller as the 'Desired inlet temperature'.
The air mixing circuit, controlled by M2, is considered as the
main circuit, whereas the heating circuit, controlled by M1, is the
supplementary circuit.
The motorized control valve M1 (controlling the heating
temperature) is opened gradually when the S3 temperature is
lower than the desired S3 temperature and vice versa.
Room temperature:
If the room temperature (S4 or ECA 30) does not equal the desired
room temperature, the desired temperature at S3 can be adjusted.
By means of a week schedule (up to 3 ‘Comfort’ periods / day), the
heating circuit can be in ‘Comfort’ or ‘Saving’ mode (two different
temperature values for desired inlet temperature and two different
temperature values for desired room temperature).
The fan F1 is ON / OFF controlled according to the schedule
and heating demand. A damper P2 can be ON / OFF controlled
according to schedule. The circulation pump X3 is ON / OFF
controlled according to heating demand.
Air quality control (CO
2
measured in "ppm"):
When the ppm value (0 - 10 volt signal measured by S11) exceeds a
selectable limit, the damper M2 gradually opens in order to supply
more fresh air.
When M2 is fully open, the fans V2 and V3 are gradually increased
in speed until the ppm value is acceptable. Speed relation between
V2 and V3 can be set.
As an alternative, the S11 signal can express an RH signal (Relative
Humidity).
Ventilation during saving period:
A desired fan speed can be set.
•
Room temperature signal must be present
•
The night damper P8 will open
•
The fan V2 will operate at reduced speed
•
The fan V3 is OFF
•
P2 is OFF
•
M2 is OFF
M1 is 3-point controlled, whereas M2 is 0-10 V controlled.
For a description of alarms, compensation temperature, return
temperature limitation (S5) and frost protection (S6 and S7), please
read the section ‘A214 and A314 in general’.
Typical A314.9 application:
8
7
H
1
4
7
1
.1
1
D
a
n
fo
s
s
S 1
S
2
A
1
X
4
M
2
ECL 310
+ ECA 32
S
10
X
3
M
1
S
5
S
6
S
7
S
10
S
9
F1 / V2
S
11
S 3
S
8
S
8
S
4
S
9
F1 / V3
A
P
2
The shown diagram is a fundamental and simplified example and does
not contain all components that are necessary in a system.
All named components are connected to the ECL Comfort controller.
List of components:
ECL 310 Electronic controller ECL Comfort 310
ECA 32 Built-in extension module
S1 Outdoor temperature sensor
S2 (Optional) Compensation temperature sensor
S3 Duct temperature sensor
S4 Room temperature sensor*
S5 (Optional) Return temperature sensor
S6 (Optional) Frost temperature sensor
S7 (Optional) Frost thermostat
S8 (Optional) Fire thermostat
S9 Fan monitor
S10 Filter monitor
S11 Air quality (CO
2
) signal (ppm). Alternative: Relative
Humidity signal
F1 Fan (ON / OFF)
P2 Damper (ON / OFF), not illustrated
X3 Circulation pump, heating (ON / OFF)
X4 Schedule 3
P8 Night damper, not illustrated
M1 Motorized control valve, heating (3-point controlled)
M2 Motorized damper (0 - 10 volt controlled)
V2 Fan speed (0 - 10 volt controlled)
V3 Fan speed (0 - 10 volt controlled)
A1 Alarm
* Alternative: ECA 30
22
DEN-SMT/DK
VI.GU.A2.02
Danfoss District Energy
