Installation; Before You Start - Danfoss ECL Comfort 210 Operating Manual

Operating Guide ECL Comfort 210/296/310, application A232 / A332

2.0 Installation

2.1 Before you start

The Application Key A232 contains 5 applications, all related to
floor heating and ceiling cooling systems. The applications in the
A232 key offer a wide range of possibilities (see the examples).
The application A232.1 is very flexible. These are the basic
principles:
Heating / cooling with room temperature control:
Typically, the flow temperature is adjusted according to your
requirements. The flow temperature sensor S3 is the most
important sensor.
The desired flow temperature at S3 is calculated in the ECL
controller, based on the outdoor temperature (S1) and the desired
room temperature. The lower the outdoor temperature, the higher
the desired flow temperature (heating).
Oppositely, the higher the outdoor temperature, the lower the
desired flow temperature (cooling). The change-over between
heating and cooling can be:
• Outdoor AND room temperature or
• Room temperature or
• Outdoor temperature related.
By means of a week schedule, the circuits can be in 'Comfort' or
'Saving' mode (two values for the desired room temperature). In
Saving mode the heating can be reduced or switched off totally.
The motorized control valve (M1) is opened gradually when:
• (Heating) the flow temperature is lower than the desired flow
temperature and vice versa.
• (Cooling) the flow temperature is higher than the desired flow
temperature and vice versa.
The ON-OFF outputs X2 / X3 are activated at cooling / heating
demand respectively.
Room temperature:
If the measured room temperature (S2 or ECA 30 / 31) does not
equal the desired room temperature, the desired temperature at
S3 can be adjusted.
Surface temperature limitation:
Heating: The floor surface temperature S5 can be limited to a
maximum in order to avoid a too warm floor.
Cooling: The ceiling surface temperature S6 can be limited to a
minimum in order to avoid a too cold ceiling (risk for condensation).
Override:
When the ECL controller is in scheduled mode, the S8 input can be
used for overriding the Schedule to operate in Comfort or Saving
mode.
Cooling mode:
Based on the Relative Humidity (RH), measured by ECA 31, the
desired flow temperature can be minimum limited to avoid dew
(condensation).
The circulation pump, P1, is ON at heating or cooling demand or
at frost protection.
6 | © Danfoss | 2017.08
Typical A232.1 application:
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 Electronic controller ECL Comfort 210, 296 or 310
/296/310
S1 Outdoor temperature sensor
S2 ECA 31 Room temperature and RH sensor *
S3 Flow temperature sensor
S4
not used
S5
(Optional) Floor surface temperature sensor
S6
(Optional) Ceiling surface temperature sensor
S7 (not illustrated) Override input for stop of
circulation pump
S8
(not illustrated) Override input for Comfort /
Saving
P1 Circulation pump (ON / OFF)
X2 Cooling demand (ON / OFF)
X3
Heating demand (ON / OFF)
X4
(not illustrated) Multi-functionality
M1
Motorized control valve (3-point controlled)
M2
Motorized change-over valve
* Alternative: ESM-10, room temperature sensor
VI.JM.G2.02