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Data sheet ECL Comfort 210 controller and Remote Control Unit ECA 30 / 31

VD.KT.W1.02 © Danfoss 04/2010

DEN-SMT/DK

Functions General functions:

• TheECLComfort210hasalltherequired

functions of a modern electronic temperature

controller for heating and DHW applications.

• Thecontrollercanbeusedasmasterorslave

in systems with master / slave ECL Comfort 210

/ 310 controllers.

• TheECLApplicationKeycontainsthe

application software for ﬂexible conﬁguration.

It is possible to update the controller with new

application software.

• TheECLComfort210contains,besidesthe

standard functions, log and alarm functions.

• Thebuilt-inRealTimeClockgivesautomatic

summer / winter time changeover, week and

holiday schedule.

• Motorprotection,whichensuresstablecontrol

and a long life of the motorized control valve,

is available for most of the applications. In

periods without heat demand, the motorized

control valve is exercised to avoid blocking.

• Scheduledcontrolisbasedonaweek

program. A holiday program gives the

possibility to select days with comfort or

saving mode.

• TheECLComfort210canreactonpulsesfrom

a heat or ﬂow meter to limit the power or the

ﬂow.

• Inmanyapplicationsanaloginput(0–10V)

are conﬁgured for pressure measuring among

others. The scaling is set in the controller.

• Someapplicationsareconguredtohandle

digital input. This function can be used to have

an external switch to run comfort or saving

mode or react on a ﬂow switch signal e.g.

• Thecontrolparameters,proportionalband

(Xp), integration time (Tn), running time of the

motorized control valve and neutral zone (Nz)

can be set individually for each output (3-point

control).

Heating functions:

• Theheatcurveandmax./min.limitationsof

the ﬂow temperature are set by means of 6

coordinate points.

• Thereturntemperaturelimitationcanworkin

relation to the outdoor temperature or be a

ﬁxed value.

• Theheatingcut-outfunctioncanswitch-out

the heating and stop the circulation pump at

high outdoor temperatures.

• BasedontheroomtemperaturetheECL

Comfort 210 can correct the desired ﬂow

temperature in order to increase the comfort

level.

• Theoptimizerfunctionensuresheatinginthe

desired periods (the lower outdoor

temperature, the earlier cut-in of the heating).

• Therampingfunctionmakesasmoothcut-in

of the heating (district heating installations).

• Theboostfunctionmakesapowerfulcut-inof

the heating (boiler based installations).

• Thecirculationpumpiscontrolledinrelation

to heat demand and frost protection. In

periods without heat demand, the circulation

pump is exercised to avoid blocking.

• Thesavingfunctiongivestwopossibilities: 

· reduced ﬂow temperature with ﬁxed

reduction or reduction in relation to outdoor

temperature (the lower the outdoor

temperature, the less the reduction),

· heating oﬀ, still with active frost protection

DHW functions:

• TheAutoTuningfunctionfortheautomatic

setting of control parameters for constant

DHW temperature is integrated in the

application A217 and A266. However, Auto

Tuning is only applicable with valves that are

approved for Auto Tuning, i.e. the Danfoss

types VB 2 and VM 2 with split characteristic as

well as logarithmic valves such as VF and VFS.

• Theanti-bacteriafunctioncanfollowa

schedule program.

• TheheatingcircuitcanhaveslidingDHW

priority.

Communication The ECL Comfort 210 has an ECL 485

communication bus, which is used for closed

communication between master, slave and

RCUs.

Additionally, the ECL Comfort 210 has a

non-galvanically separated RS 485 bus for

limited Modbus communication. A USB

connection (type B) will be available for a

Service Tool depending on introduction time.

Master / slave connections

Languages Depending on application, the menu language

is available in English and other languages.

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