CONTROL BOX
ECB8-230
| Wired Control Box for
Underfloor Heating System, 230V
Quick Guide
Ver. 4.1
Release date: VII 2024
Soft: v1.3
Producer:
Engo Controls sp z o.o. sp. k.
4 Rolna St.
43-262 Kobielice
Poland
www.engocontrols.com
Introduction
N
L
SL1
N
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SL2
N
L
SL3
ECB08M230 control box is the main element of the underfloor heating control system. It has
INPUT_1
INPUT_2
INPUT_3
a built-in modules that controls the heat sources (by volt-free relay) and pump (230V AC). The
control box allows to control 8 different zones. It is equipped with 230V AC voltage outputs
actuators. Pluggable terminal blocks provide quick and convenient wiring connections. The
control box is designed to work with NC (normally-closed) type actuators.
Product compliance
THERMOSTAT
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This product complies with the essential requirements and other relevant provisions of the following
EU Directives: EMC 2014/30/EU, Low Voltage Directive LVD 2014/35/EU, RoHS directive 2011/65/EU.
LED
LED
LED
N
L
SL1
N
L
SL2
N
L
SL3
N
L
SL4
N
L
SL5
ACTUATOR
ACTUATOR
ACTUATOR
Safety information
INPUT_1
INPUT_2
INPUT_3
INPUT_4
INPUT_5
Use in accordance with national and EU regulations. Device is intended for indoor use only
in dry conditions. Product for indoor use only. Installation must be carried out by a
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qualified person in accordance to national and EU regulations.
OUTPUT_1
OUTPUT_2
OUTPUT_3
Before attempting to setup and install, make sure that ECB08M230 is not connected to any
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LED
LED
LED
LED
power source. Installation must be carried out by a qualified person. Incorrect installation
ACTUATOR
ACTUATOR
ACTUATOR
ACTUATOR
ACTUATOR
N
SL1
N
SL1
N
SL2
N
SL2
N
SL3
N
SL3
may cause damage to the wiring centre. The ECB08M230 should not be installed in areas
OUTPUT_1
where it may be exposed to water or damp conditions.
PLEASE NOTE:
OUTPUT_1
OUTPUT_2
OUTPUT_3
OUTPUT_4
OUTPUT_5
N
For the entire installation, there may be additional protection requirements, which
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SL1
N
SL1
N
SL2
N
SL2
N
SL3
N
SL3
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SL4
N
SL4
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SL5
N
SL5
the installer is responsible for maintaining.
Technical Information
Power Supply
230 V AC 50 Hz
Total Load Max
6 (3) A
Pump Load Max
3A
Boiler Load Max
6A
Actuator Load Max
2A
Thermostat Load Max
1A
Outputs
Pump control (230V AC)
Boiler control (NO/COM/NC)
Terminals for actuators (230V AC)
Dimensions [mm]
327 x 110 x 37
Control Box description
1. Cartridge fuse 5 x 20 mm T6,3A
2. Power supply (AC 230V)
3. Pump control output (AC 230V)
N
L
SL1
N
L
SL2
INPUT_1
INPUT_2
THERMOSTAT
THERMOSTAT
8
LED
LED
ACTUATOR
ACTUATOR
OUTPUT_1
OUTPUT_2
N
SL1
N
SL1
N
SL2
N
SL2
Fuse
N
L
SL4
N
L
SL5
N
L
SL6
N
L
SL7
INPUT_4
INPUT_5
INPUT_6
INPUT_7
N
L
SL1
N
L
SL2
N
L
SL3
N
L
SL4
Please note: Replacement of the fuse to be carried out only when the control
box is disconnected from power supply (230 V ~).
INPUT_1
INPUT_2
INPUT_3
INPUT_4
Main fuse is located under the housing cover next to power supply terminals and
secures the control box and the devices connected to it. Use ceramic tube slow blow
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250 V ROHS fuses (5x20 mm) with nominal max current 6,3A. To replace fuse remove
the fuse holder with a flat screwdriver and pull out the fuse.
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LED
LED
LED
WIRING CENTRE
LED
N
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SL6
N
L
SL7
N
L
SL8
ACTUATOR
ACTUATOR
ACTUATOR
ACTUATOR
ECB08M230
INPUT_6
INPUT_7
INPUT_8
Power supply
LED
LED
LED
LED
ACTUATOR
ACTUATOR
ACTUATOR
ACTUATOR
THERMOSTAT
THERMOSTAT
THERMOSTAT
OUTPUT_4
OUTPUT_5
OUTPUT_6
OUTPUT_7
LED
LED
LED
LED
LED
LED
ACTUATOR
ACTUATOR
ACTUATOR
AC 230V
PE
N
SL4
N
SL4
N
SL5
N
SL5
N
SL6
N
SL6
N
SL7
N
SL7
OUTPUT_2
OUTPUT_3
OUTPUT_4
OUTPUT_6
OUTPUT_7
OUTPUT_8
SL1
N
SL1
N
SL2
N
SL2
N
SL3
N
SL3
N
POWER SUPPLY
SL4
N
SL4
FUSE 6.3A
PE
N
SL6
N
SL6
N
SL7
N
SL7
N
SL8
N
SL8
N
L
N
L
230 V AC
L
N
Power supply for wiring centre is 230 V ~ 50Hz.
Installation features:
• three-wire,
• made in accordance with applicable regulations.
The red LED indicates that the wiring centre is connected to the power supply.
4. Boiler control output (volt free)
5. Thermostats input connections
6. Actuators output connections (AC 230V)
5
N
L
SL3
N
L
SL4
N
L
SL5
N
L
SL6
INPUT_3
INPUT_4
INPUT_5
INPUT_6
THERMOSTAT
THERMOSTAT
THERMOSTAT
THERMOSTAT
LED
LED
LED
LED
ACTUATOR
ACTUATOR
ACTUATOR
ACTUATOR
OUTPUT_3
OUTPUT_4
OUTPUT_5
OUTPUT_6
N
SL3
N
SL3
N
SL4
N
SL4
N
SL5
N
SL5
N
SL6
N
SL6
6
WIRING CENTRE
Pump control output (AC 230V)
N
L
SL8
ECB08M230
INPUT_8
N
L
SL5
N
L
SL6
N
L
SL7
N
L
SL8
The PUMP OUTPUT is used to power the circulation pump in the heating system.
INPUT_5
INPUT_6
INPUT_7
It is a 230V AC voltage output with a maximum load capacity of 3A. The pump is
INPUT_8
connected directly to the contacts. The output is turned on (the pump starts) always
after 3 minutes from the moment of receiving a heating signal from any thermostat
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connected to the wiring centre. The output is turned off (the pump stops) as soon as
the last thermostat stops reporting heat demand.
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LED
LED
LED
LED
AC 230V
PE
AC 230V
ACTUATOR
LED
LED
LED
LED
ACTUATOR
ACTUATOR
ACTUATOR
ACTUATOR
OUTPUT_8
PUMP OUTPUT
POWER SUPPLY
FUSE 6.3A
PE
AC 230V
VOLT FREE
N
L
N
L
N
L
N
SL8
N
SL8
OUTPUT_5
OUTPUT_6
OUTPUT_7
OUTPUT_8
N
PUMP OUTPUT
BOILER OUTPUT
N
SL5
N
SL5
N
SL6
N
SL6
N
SL7
N
SL7
N
SL8
N
SL8
N
L
N
L
NO
COM
NC
max
3 A
PLEASE NOTE: Before starting the installation, disconnect the 230V power
supply!
7. LED diodes indicators for the operation status of the pump,
boiler and control box power supply connection
8. LEDs 1 to 8 informing about the operation of zones 1-8
WIRING CENTRE
N
L
SL7
N
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SL8
ECB08M230
INPUT_7
INPUT_8
THERMOSTAT
THERMOSTAT
LED
LED
LED
AC 230V
ACTUATOR
ACTUATOR
OUTPUT_7
OUTPUT_8
POWER SUPPLY
FUSE 6.3A
N
L
N
SL7
N
SL7
N
SL8
N
SL8
1
Boiler control output (volt free)
WIRING CENTRE
The boiler control output is supported by a relay with voltage-free contacts
ECB08M230
(NO / COM / NC output). The boiler must be connected to the COM-NO
or COM-NC contacts. It is a typical two-state relay. In most cases, the NC terminal is
not used. If the thermostats connected to the wiring centre send a signal for heating,
the BOILER output contacts activate the relay with a 3-minute delay, allowing the
boiler to be turned on. The boiler is turned off immediately, when none of the zones
sends a signal for heating.
VOLT FREE
LED
LED
LED
AC 230V
PE
AC 230V
BOILER OUTPUT
When the Pump/Valve control output is
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L
NO
COM
NC
activated, the pump status LED shows
L
a constant
green
light.
POWER SUPPLY
PUMP OUTPUT
FUSE 6.3A
PE
N
L
N
L
N
L
N
L
Pump status Boiler status Power supply
LED
LED
LED
LED
LED
PE
AC 230V
VOLT FREE
BOILER OUTPUT
PUMP OUTPUT
PE
N
L
N
L
N
L
NO
COM
NC
2
3
4
VOLT FREE
NO
COM
NC
BOILER OUTPUT
BOILER OUTPUT
NO
COM
NC
Boiler ON/OFF contacts
(according to the boiler's manual)
BOILER
When the BOILER control output is
activated, the boiler status LED shows
a constant
green
light.
7
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