Installation Guide
ECL Comfort 210 / 310, application A214 / A314
The application
A214.4
is very flexible. These are the basic
principles:
Heating / cooling with air duct temperature control
Typically, the heating / cooling temperature is adjusted according
to your requirements.
The flow temperature sensor S3 in the heating circuit 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 flow temperature is
lower than the desired balance temperature and vice versa.
At cooling, the motorized control valve M2 controls the cooling
temperature at S4.
Air duct temperature:
A too low air duct temperature S4 will activate the heating circuit
M1, whereas a too high air duct temperature will activate the
cooling circuit M2.
At heating demand, the air duct temperature S4 can adjust the
desired temperature at S3. At cooling demand, the air duct
temperature S4 is controlled according to the desired air duct
temperature. A "Dead zone" (= number of degrees) can be set
in order to avoid unstable shifts between heating and cooling
operation.
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 air duct temperature).
In 'Saving' mode the desired air duct 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 A214.4 application:
P 2
F1
S 4
S 1
D
a
n
fo
s
s
8
7
H
2
1
2
2
.1
1
S 5
M1
X3
M2
ECL 210 / 310
A1
S 6
S 7
S 8
S 8
S 8
S 3
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
Heating temperature sensor
S4
Air duct 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
8
DEN-SMT/DK
VI.GU.A2.02
Danfoss District Energy
