Installation Guide
ECL Comfort 210 / 310, application A214 / A314
The application
A214.5
is very flexible. These are the basic
principles:
Heating / cooling with room temperature control
Typically, the heating / cooling temperature is adjusted according
to your requirements.
The temperature sensor S3 in the air duct is the most important
sensor. The desired temperature at S3 is set in the ECL Comfort
controller as the 'Desired balance temperature'.
The motorized control valve M1 (controlling the heating
temperature) is opened gradually when the air duct temperature is
lower than the desired balance temperature and vice versa.
At cooling, the motorized control valve M2 controls the cooling
temperature.
Room temperature:
A too low room temperature S4 will activate the heating circuit M1,
whereas a too high room temperature will activate the cooling
circuit M2. A "Dead zone" (= number of degrees) can be set in order
to avoid unstable shifts between heating and cooling operation.
At heating / cooling demand, the room temperature S4 can adjust
the desired temperature at S3.
By means of a week schedule (up to 3 ‘Comfort’ periods / day), the
heating / cooling circuit can be in ‘Comfort’ or ‘Saving’ mode (two
different temperature values for desired room temperature).
In 'Saving' mode the desired room temperature determines a
correction of the desired temperature at S3 in heating mode. In
cooling mode the cooling is OFF during 'Saving'.
The fan F1 is ON / OFF controlled according to the schedule and
heating / cooling demand. The damper P2 is ON / OFF controlled
according to schedule. The circulation pump X3 is ON / OFF
controlled according to heating demand.
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 A214.5 application:
P 2
F1
S 3
S 4
S 1
D
a
n
fo
s
s
8
7
H
2
1
2
4
.1
1
S 5
M1
X3
M2
ECL 210 / 310
A1
S 6
S 7
S 8
S 8
S 8
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 210 / 310
Electronic controller ECL Comfort 210 or 310
S1
Outdoor temperature sensor
S2
(Optional) Compensation temperature sensor (not
illustrated)
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
F1
Fan (ON / OFF)
P2
Damper (ON / OFF)
X3
Circulation pump, heating (ON / OFF)
M1
Motorized control valve, heating (3-point controlled)
M2
Motorized control valve, cooling (3-point controlled)
A1
Alarm
* Alternative: ECA 30
Danfoss District Energy
VI.GU.A2.02
DEN-SMT/DK
9
