BC-HM VI.76.P4.02 Danfoss 8/98 1
Instruction
ECL 9200 and ECL 9250
087R9394087R9394
087R9394087R9394
087R9394
087R9394087R9394
087R9394087R9394
087R9394
ContentsContents
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
2 VI.76.P4.02 Danfoss 8/98 BC-HM
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
4 VI.76.P4.02 Danfoss 8/98 BC-HM
Electrical connectionsElectrical connections
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)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)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 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 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 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.
6 VI.76.P4.02 Danfoss 8/98 BC-HM
Control settingsControl settings
Control settingsControl settings
Control settings
c) Function switchc) Function switch
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 guided) User guide
d) User guide
e) Indication lighte) Indication light
e) Indication lighte) Indication light
e) Indication light
The indication light shows:
- Controller on operation
- Possible faults (test result).
User settingsUser settings
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 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 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.
BC-HM VI.76.P4.02 Danfoss 8/98 7
f) Setting heat curve slopef) Setting heat curve slope
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
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 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 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 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 servicej) Setting the hot water service
j) Setting the hot water service
temperaturetemperature
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 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 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 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 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 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 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 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 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.
10 VI.76.P4.02 Danfoss 8/98 BC-HM
MountingMounting
MountingMounting
Mounting
On wallOn wall
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 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-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
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
12 VI.76.P4.02 Danfoss 8/98 BC-HM
Time switchTime switch
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 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 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).
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