Installation Guide
ECL Comfort 210 / 310, application A214 / A314
The application
A314.2
is very flexible. These are the basic
principles:
Heating and (passive) cooling with room temperature control
Typically, the heating / cooling 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 balance temperature'.
The motorized control valve M1 (controlling the heating
temperature) is opened gradually when the air duct temperature
is lower than the desired temperature and vice versa. At cooling,
the motorized damper M2 controls the cooling temperature. The
cooling section can be passive (re-circulation) or active.
Room temperature:
A too low temperature at S4 will activate the heating circuit (M1),
whereas a too high duct 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 temperature at S4 can adjust
the desired temperature at S3.
M1 is 3-point controlled, whereas M2 is 0-10 V controlled.
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 A314.2 application:
S 3
M2
S 5
M1
X3
S 4
A
F1
ECL 310
A1
S 6
S 7
+ ECA 32
S 2
S 1
D
a
n
fo
s
s
8
7
H
2
1
2
7
.1
2
P 2
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 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
F1
Fan (ON / OFF)
P2
Damper (ON / OFF)
X3
Circulation pump, heating (ON / OFF)
M1
Motorized control valve, heating (3-point controlled)
M2
Motorized damper (0 - 10 volt controlled)
A1
Alarm
* Alternative: ECA 30
12
DEN-SMT/DK
VI.GU.A2.02
Danfoss District Energy
