Minib EB-A, EB-B, EB-C Installation Instructions Manual
INSTALLATION INSTRUCTIONS
FOR CONTROLS
EB-A, EB-B AND EB-C
FOR CONVECTORS
w w w . m i n i b . c o m
Introductory information
Minib controls are supplied from a standard 230V/50Hz supply network. To ensure electrical safety SELV low voltage at 12V AC
is used to supply the convectors via an isolating transformer. TT100, TT240 and TT300 are available according to the power re-
quirement. All electrical installation work must be undertaken by a qualied electrician.
The DC motors within the convectors are fed by the electronic board EB; this regulates the heat output by controlling the fan speed. The electronic board contains a microprocessor which is programmed for all three types of control EB-A, EB-B and EB-C. No
adjustments need to be made between the various control options as the controller automatically responds to the character of
the control signal and selects the appropriate type of regulation (note for control type EB-A a jumper must be tted to the electronic board).
The power supply from the transformer must be connected to terminals marked 12V AC in the convector. If a thermal switch is
used (supplied with all convectors) then the power supply is connected to terminals 12V AC and TK (see wiring diagram). The thermal switch is open when the water temperature is less than 35°C and the fans are stopped. For convectors also designed for cooling the contact closes when the cooling water temperature drops below 15°C.
The power supply should be connected directly to the 12V AC terminals in order to test the functionality of the unit and controls.
If the thermal switch is to be used then the wire should then be connected from terminal 12V DC to terminal TK (see control wiring diagrams).
The power supply to individual convectors can be made with cables with the relevant cross section and branching at each convector. Parallel (Y) connections can also be made between the transformer and the convectors and is more suitable for systems
with several concevtors. In each case the distance between the power supply (transformer) and the convector should not exceed
15m. Branching can be done in an electrical box in the wall or via the terminals directly under the cover of the convector.
CONTROL EB-A
Characteristic
EB-A is the simplest form of control and uses a potentiometer to continuously regulate the fan speed or switch the fans off.
The control is intended for regular areas which are occupied and the control can be adjusted by the occupants. Output is varied
by rotating the wall mounted hand potentiometer.
a/ The potentiometer in the frame ABB Tango
b/ The rotary thermostat in the frame ABB Tango.
(dimensions: 81x81 mm)
basic design in white colour, other color combinations must be ordered individually
a/ b/
L
N
PE
L1�L2
EB* EB* EB*
rozváděč 230Vac
TT100�(TT240, TT300)
1�2�3�4�5�6
1�2�3�4�5�6
1�2�3�4�5�6
fan-coil
fan-coil
fan-coil
Základní zapojení regulace EB- A s možností plynulé manuální�regulace otáček ventilátorů.
Při�použití�termostatu se automaticky udržuje�nastavená�teplota.
Elektronický řídicí blok EB*�je�nastaven�na�plynulou regulaci otáček.
v místnosti
termostat
regulace�otáček
napájení�12Vac
řízení�otáček
CYKY J�3x�1,5�mm
2
CYKY O�3x�1,5�mm
2
potenciometr�-
nastavení�teploty
-
(do�15m)
Description of function:
In order to prepare the convectors for continuous speed control it is necessary to connect the jumper on the electronic board. Loosen the central screw which holds the board in place then push the board gently away from the convector so that there is access
for tting the jumper (do not disconnect any cable). Having tted the jumper the board is replaced with the screw into the original
position. Note. The power must be disconnected while tting the jumper.
The potentiometer is connected by three wires to the closest convector at the terminals marked 12V DC, 0V DC and Ur. Any multicore cable can be used that has multicoloured wires, for example 4 core communication cable with 4x0.19mm2 conductors and
the blue wire in 0V, the red wire in 12V and the third wire of another colour in Ur, the control voltage.
If automatic control of set temperature is required then a thermostat can be wired into the potentiometer which switches of the
fan when the set temperature is reached. If a thermostat is used then the jumper wire between terminals A and B in the potenti-
ometer must be removed and the terminals reconnected to the switching contacts of the thermostat (same wire specication as
between potentiometer and convector).
One potentiometer can control up to 10 convectors.
Scheme of control EB-A
The basic connection of the control EB-A with a possibility of the continuous fan speed control.
The set temperature is automatically maintained in the room when using the thermostat.
The electronic control block EB* is set on the continuous speed control.
Switchboard 230Vac
Thermostat
– temperature setting
Potentiometer
– speed control
Power supply 12Vac
Speed control
CYKY O 3x1.5 mm2 (up to 15m)
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