Danfoss ECL 9200/9250 Operating instructions

BC-HM VI.76.P4.02  Danfoss 8/98 1

Instruction

ECL 9200 and ECL 9250

087R9394087R9394

087R9394

087R9394087R9394

087R9394

ContentsContents

Contents

System examples ...............................2

Wiring diagrams ................................. 3

Electrical connections ................. 4 - 5

- connections (230 V a c )

- connection of temperature sensors

Master/slave units .............................. 5

- Control status

- Test of controller and sensors

Function test .......................................5

Controller settings........................ 6 - 8

User settings.........................................

5

- a) program time switch

- b) temperature setting

- c) function switch

- d) user guide

- e) indication light

Potentiometer settings....................

7 - 8

- f) heat curve slope

- g) minimum boiler temperature

- h) boiler temperature difference

- i) reduced temperature

- j) hot-water-service temperature

Special settings.....................................

8

- Switches 1 - 8

Mounting and dismantling....... 10 - 12

- On wall

- In the front plate

- On a DIN-rail

- Several controllers in parallel

- Time switch

- Time switch dismounting

- External time control

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ECL 9200 - system example 1

ECL 9250 - system example 2

ECL 9250 - - system example 3

BC-HM VI.76.P4.02  Danfoss 8/98 3

ECL 9200 - wiring for system example 1

ECL 9250 - wiring for system example 2

ECL 9250 - wiring for system example 3

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Electrical connectionsElectrical connections

Electrical connections

Electrical connections to the controller

are made using terminal boards with

screw terminals.

Up to 3 × 1.5 mm

2

or corresponding can

be connected to each terminal. The

terminals are coded so that units on

mains voltage cannot be connected on

the sensor side.

Terminal Max. load

Phase (L) 14 -

Zero (N) 13 -

Circulation pump 22 max. 8 (2) A 230 V ac

Burner 24 max. 8 (2) A 230 V ac

Charge pump or distribution valve 20 max. 8 (2) A 230 V ac

230 V a.c. connections (13 - 24)230 V a.c. connections (13 - 24)

230 V a.c. connections (13 - 24)

Wire cross section: 0.75 - 1.5 mm

2

Wire length: Maximum 50 meter

Connection of temperature sensors, etc. - safety voltage (terminals 1 - 12)Connection of temperature sensors, etc. - safety voltage (terminals 1 - 12)

Connection of temperature sensors, etc. - safety voltage (terminals 1 - 12)

The installation of sensors and remote controls is described in the associated

product instructions.

ECL 9200 and ECL 9250 must be connected to the following sensors:

Type Terminal

Outdoor temperature sensor ESMT 11 - 12

Flow temperature sensor ESMA/C/U 8 - 9

Hot-water-service-sensor ESMB/U 7 - 9

BC-HM VI.76.P4.02  Danfoss 8/98 5

ECL 9200 and ECL 9250 is now able to control the flow temperature in relation to the

outdoor temperature. ECL 9200 and ECL 9250 also control the hot-water-service

temperature.

In addition, the following sensors and remote control units can be connected:

Type Terminal

Room temperature sensor ESMR 4 - 5

Remote control unit with built-in room sensor ESMF 3 - 4

Control panel ECA 9020 with time switch

optimiser and room sensor. The control ECA 9020 1 - 2

panel will also show actual and

calculated system temperatures

Note! Cable resistance might produce

an incorrect measurement. A resistance

of 4 Ohm corresponds to a deviation of

1 degree.

Master/slave unitsMaster/slave units

Master/slave units

ECL 9200 and ECL 9250 can be

connected to other ECL controls (the

number of controls depends on the type).

Wire cross section: Min. 0.4 mm

2

Max. wire length: 50 Meter

Function testFunction test

Function test

The indicator light shows whether

ECL 9200/9250 is in operation or not.

Moreover the indication shows possible

faults when testing sensors and control-

ler.

Test of controller and sensorsTest of controller and sensors

Test of controller and sensors

ECL 9200 and ECL 9250 can test both

the controller and the sensors. Turn the

function switch in position

.

No light

The controller is defect or the flow

temperature sensor is not mounted.

Constant light with 1, 2, 3 or 4

interruptions

The number of interruptions must

correspond to the number of connected

sensors. If the number is not correct one

or several sensors might be

shortcircuited or disconnected.

Constant light

The controller is defect.

Further information is contained in the

instruction on master/slave controls.

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Control settingsControl settings

Control settings

c) Function switchc) Function switch

c) Function switch

(ECL 9200 only) Burner and

circulation pump stopped, but

system is frost-protected.

Burner and circulation pump

stopped, but system is frost-

protected.

Hot-water is still provided

Time program overridden and

constant control in accordance with

reduced temperature.

Automatic changeover between

normal and reduced temperature

as set on time switch.

Time program overridden and

constant control in accordance with

normal temperature.

Manual operation

All control functions are off and

burner is controlled exclusively by

boiler thermostat. Hot-water-

service still provided. Test of

controller and sensors.

d) User guided) User guide

d) User guide

e) Indication lighte) Indication light

e) Indication light

The indication light shows:

- Controller on operation

- Possible faults (test result).

User settingsUser settings

User settings

a) Program time switch

b) Temperature setting

c) Function switch

d) User guide

e) Indication light

a) Program time switcha) Program time switch

a) Program time switch

The program time switch is set in the

required normal and reduced

temperature periods by pushing riders

for reduced temperature setting towards

the center of the time switch.

b) Temperature settingb) Temperature setting

b) Temperature setting

The flow temperature of the heating

circuit can be increased and reduced by

turning the temperature setting knob

(parallel displacement). Turning towards

+8 increases the flow temperature.

Standard setting is 0.

The maximum setting of +8 corresponds

to a possible increase of room tempe-

rature of approx. 8 degrees.

With ESMR/F connected, the flow

tempe-rature is reduced when the set

max. room temperature limit is

exceeded.

This limit is factory-set at 22 °C,

however displaceable by ±10 degrees.

The best heating economy can be

achieved at the lowest possible flow

temperature and by using radiator

thermostats.

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f) Setting heat curve slopef) Setting heat curve slope

f) Setting heat curve slope

Heat curve slope can be set

independently within 0.2 - 3.4. The heat

curve factory setting is 2.0.

If a satisfactory room temperature

cannot be obtained when the outdoor

temperature is less than +5 °C, the

slope can be increased by turning knob

f). The heat curve can be parallel-

displaced using knob b).

PotentiometereinsettingsPotentiometereinsettings

Potentiometereinsettings

f) Heat curve slope in heating circuit

g) Min. boiler temperature

h) Boiler temperature differenze

i) Reduced temperature level

j) Hot-water-service

(ECL 9250 only)

k) Miniswitches (see page 9)

Examples of heat curve settings

Outdoor- Radiator Floor heating

temperature* (80 °C) (55 °C)

–25 °C 1,2 0,7

–15 °C 1,6 0,9

–10 °C 1,8 1,0

*Outdoor temperature for sizing. Normally the lowest

occurring outdoor temperature of the heating season

is used.

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g) Min. boiler temperatureg) Min. boiler temperature

g) Min. boiler temperature

The boiler temperature can be set within

a range of 10 - 70 °C. The factory

setting is 10 °C, however, the min.

allowable boiler temperature is to be set

according to the boiler manufactorer

instructions.

h) Boiler temperature differenceh) Boiler temperature difference

h) Boiler temperature difference

Fixed difference

Set the fixed difference between the

start and stop temperatures within the

range 2 - 20 K.

Automatic difference (AUTO)

Set potentiometer in position AUTO and

start and stop temperature will be

automatically adapted to the boiler type

and system load. This function is

suitable for low thermal capacity boilers

(reduces the start/stop frequency). The

factory setting is 12 K, however the

setting is to follow the boiler

manufactorer instructions.

i) Setting reduced temperature leveli) Setting reduced temperature level

i) Setting reduced temperature level

The reduced temperature level can be

set at a fixed value (1 - 8) or at an

outdoor-temperature-dependent value

(AUTO). The basic setting for reduced

temperature is 5. Each graduation on

the scale corresponds to about 1 degree

in the room.

Reduced temperature

The scale shows room temperature drop

during reduced temperature period.

Different settings are given (–2, –4, –6,

–8 and AUTO).

If no room sensor is used, the control

calculates the parallel displacement to

give the set room temperature drop.

j) Setting the hot water servicej) Setting the hot water service

j) Setting the hot water service

temperaturetemperature

temperature

The hot-water-service temperature can

be set with potentiometer j) within 30 - 70

°C.

The basic setting is 50 °C.

Time control of hot water service circuit

A 2-channel digital time switch or a

control panel ECA 9020 - channel 3 can

time control the hot-water-service circuit.

The hot-water-service temperature is

reduced to 10 °C at reduced operation.

Special settingsSpecial settings

Special settings

ECL 9200 and ECL 9250 has eight mini-

switches placed behind a small cover

when tipping out the inside cover. The

switches are used for adapting the

controller to the heating system.

Factory setting

BC-HM VI.76.P4.02  Danfoss 8/98 9

Switch 5Switch 5

Switch 5

Hot-water-service priority control with

charge pump or diverting valve.

Switch

Hot-water-function

5

With charge pump -

O F F the circulating pump stops at

hot water demand

With diverting valve -

O N the circulating pump operates

at hot water demand

Switch 6Switch 6

Switch 6

Choose total stop at reduced

temperature operation

Switch

Function

6

Min. temperature at

normal and reduced operation

ON

Min. temperature at

normal operation only

Switch 7Switch 7

Switch 7

Choose delayed pump operation after

reduced operation.

Switch

Function

7

OFF

Pump and burner

are cut in at the same time

ON

Pump cut-in is delayed until

minimum boiler circuit tempe-

rature has been reached

Switch 8Switch 8

Switch 8

Choose limit or adaptive function

Switch

Function

8

OFF

Adaptive function OFF

(limiting function (ESMR/F))

Adaptive function ON

O N (The type of adaptive function

is set with switch 4).

Switch 1 and 2Switch 1 and 2

Switch 1 and 2

Choose at which outdoor temperature

you want to cancel the room heating

(summer cut-out)

Switches

Cancelling temperatures

12

OFF OFF No cancellation

O F F O N 15 °C

O N O F F 18 °C

O N O N 21 °C

Switch 3Switch 3

Switch 3

Choose whether you want boost (flow

temperature increase) after reduced

temperature period.

Switch

Function

3

O F F No boost

O N 20 % boost for one hour

Switch 4Switch 4

Switch 4

Always in position OFF.

Switch

Adaptive function

4

OFF

Adaptive heat curve setting

based on flow temperature:

ESMR/F connected. Flow

temperature is reduced when

room temperature exceeds

22 °C max. limit.

Note: In ESMF this 22 °C max.

limit is displaceable by ±10

degrees

ON

Adaptive heat curve setting

based on room temperature

sensor ESMR/F

(reference room control)

The room temperature is set

with the ±knob for parallel

displacement. Reference point

20 °C and range ±8 degrees.

ESMF connected, the

reference point is displaced

by ±10.

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MountingMounting

Mounting

On wallOn wall

On wall

Use a standard or a special base plate

with wall case for mounting 3250 on wall.

The plate is fixed on a flat surface with

two 4 mm screws (standard) or three 4

mm screws (special). Be aware of the

"UP"-arrow.

Then wire the ECL 9200 and ECL 9250

as described in the paragraph "Wiring".

The controller is mounted in the base

plate (when using the special base plate,

note that the controller is first of all to be

fit into the wall case) and screw up the

center screw behind the cover plate.

In the front plateIn the front plate

In the front plate

ECL 9200 and ECL 9250 can be

mounted into a boiler front plate. The

opening is to measure 92 × 138 mm and

the plate is to be max. 3 mm thick.

Fix four retainer springs on the

controller, push it gently into the opening

and the springs will secure the controller

in the opening. The retainer springs are

delivered as accessories together with 2

terminal strips.

Wire the ECL 9200 and ECL 9250 to the

two terminal strips and then mount them

in the controller. The terminal strips are

encoded to prevent exchange by

mistake.

On a DIN-railOn a DIN-rail

On a DIN-rail

ECL 9200 and ECL 9250 can be

mounted on a 35 mm DIN-rail. Fix a

spring - delivered as accessory - on the

base plate bottom and then mount the

base plate on the DIN-rail.

BC-HM VI.76.P4.02  Danfoss 8/98 11

Montage mehrerer Regler nebeneinander

DismantlingDismantling

Dismantling

If the controller is mounted in a front

plate, dismantle it by pressing the

retainer springs together and dismount

the built-in controller.

Tip out the controller when the retainer

springs are not accessible.

In boiler front plate

On wall or on DIN-rail

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Time switchTime switch

Time switch

When the time switch is not mounted

remove the glass cover, the inside cover

and the time switch cover and then

mount the time switch.

Open the glass cover all the way to the

left - the taps will then slide out. The

inside cover is tipped out and the time

switch cover is unscrewed.

Then the time switch is placed in the

center of the opening with the plugs

downwards. Fasten the time switch with

the screws.

Time switch dismantlingTime switch dismantling

Time switch dismantling

Remove the screws and dismantle the

time switch by gently tipping it out.

External time controlExternal time control

External time control

An external control panel ECA 9020 can

time control ECL 9200 and ECL 9250.

ECA 9020 is connected to the bus

terminals on the rear of the ECL

controller (see wiring).

Danfoss ECL 9200/9250 Operating instructions

Danfoss ECL 9200/9250 Operating instructions

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