emmeti EWC-2 User manual

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ALP03M0001MB 023312D4 250314
centre e.g. a circulating pump.
Terminals L2 and N2 are the 230V powered
outputs for connecting the circulating pump.
Terminals NO and C are the output for the boiler
control. This is a voltage free contact (i.e.
unpowered) so that they can be used for boilers
with different voltages.
Through terminals L1 N1 SWL NSB a 230V
external timeswitch (optional) can be connected to
the wiring centre. Terminals L1 and N1 are the
powered outputs for the timeswitch power supply,
while SWL and NSB are the lines provided for
powering the actuators and thermostats section.
For complete control of each of the available
channels the user must connect a 230V actuator
to terminals L1 and N1 and a 230V thermostat to
terminals NSB SwL< SwL> TN TL. All outputs of
the actuators and thermostats section are 'powered'
outputs, i.e. they do provide the voltage for the
device connected to them.
Note: Each of the eight wiring channels has
terminals for one thermostat and one actuator only.
Up to five actuators can be connected to a channel
by using a loose cap terminal, code U9360030,
available from Emmeti UK Ltd.
TECHNICAL FEATURES
Power supply: 230V ±10% 50Hz
Absorption: Depends on the loads
connected.
Fuse (F1): 8A Time delayed
Pump output: Powered contact
Boiler output: Voltage free contact
Therm./actuators outputs: 230V
Time prog. output (optional): 230V
Contacts rating:
- Pump: 5A@250V SPDT
- Boiler: 1A@250V SPDT
- Actuators and thermostats: 8x1A@250V
Maximum applicable load:
- Actuators and thermostats: 2,5A Total
1A each channel
Indicators:
- Voltage presence: Green led
- Boiler and pump activation: Red led
Protection index:
Operating temp.:
Storage temp.:
Humidity limits':
Case: Material:
Colour:
Dimensions:
Weight:
IP 30
0 .. 40 °C.
-10 .. 50 °C
20% .. 80% RH
(non condensing)
ABS UL-V0
self-extinguishing
Signal white
(RAL 9003)
245 x 100 x 60 mm
(W x H x D)
520 gr.
WARRANTY
In view of the constant development of their
products, the manufacturer reserves the right for
changing technical data and features without prior
notice. The consumer is guaranteed against any
lack of conformity according to the European
Directive 1999/44/EC as well as to the
manufacturer’s document about the warranty policy.
The full text of warranty is available on request from
the seller.
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ALP03M0001MB 023312A4 250314
U9370001
EWC-2 8 WAY WIRING CENTRE 230V
• 230V power supply and outputs
• Connections for up to 8 separate heating zones
• Pump output and interlock boiler output
• Each channel has terminals for one thermostat and actuator
• External timeswitch input (optional)
• Compliant with directives EEC 2004/108 (EMC), 2006/95 (LVD)
and 2011/65 (RoHS2)
6 Tannery Yard - Witney Street - Burford
Oxfordshire - OX18 4DW - UK
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.emmeti.co.uk
UK
Fi . 3: Cable entry instructions
Fi . 1: External aspect
Fi . 2: Internal view and parts
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2
226 mm
245 mm
100 mm
11 mm
55 mm 26,5 mm
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4
Wiring Centre
EWC-2 8-Way
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1 1 1
1
B A

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ALP03M0001MB 023312B4 250314
Fi . 5: Internal wiring diagram.
Fi . 4: Internal view of components
LEGEND:
A On Led
B Boiler/pump led
C Power supply terminals
D Terminals for connection of the external timeswitch (optional)
E Pump output
F Boiler interlock output
G Fuse F1
H 8 thermostats + actuators outputs
I Protective earth terminals
G
I
F H E
A B
F1
D
C
TN
230V~ ±10%
50Hz
NL E
TIMER
230V~
M
230V~
PUMP BOILER
FUSE
L1L N NSB N1 SWL
F1
8A
NO SWLNSB SWL N1TL L1 NSB TLTN
SWLSWL N1L1
NONC
TL
NSB
TN
CNC
NSB NO TN
C
TL
230V~ NORMALLY
ACTUATOR 1
CLOSED TYPE
THERMOSTAT 1
230V~
230V~ NORMALLY
NC NO
TL
230V~
THERMOSTAT 8
NSB
TN
NSB
CLOSED TYPE
TNNONC C
C
TL
ACTUATOR 8
CL2N2
LN
INTERLOC
NSB
L1 SWL N1
TIMESWITCH
Notes:
1. Where a timeswitch is not used, connect a link between thermostat terminals TL and C.
2. The two output connections to the SwL and NSB terminals of the 4-way terminal block for the
timeswitch are shown as alternatives depending on whether on-off or setback operation is required.
3. Where a 230V live supply is required to energise the boiler, connect terminal L2 to terminal C and use
terminal NO to connect to the boiler switched live terminal.
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ALP03M0001MB 023312C4 250314
OVERVIEW
This device is a connection box for up to 8 zone
floor heating systems with 230V power supply.
This device controls up to 8 channels for actuators
and thermostats; each channel has terminals for
one thermostat and its actuator.
Two interlock outputs are available: one for a pump
(230V powered terminals) and one for boiler
interlock (voltage free contacts), plus the possibility
to wire an external timeswitch to control the
thermostats and actuators according to a time
program.
The wiring centre is equipped with an 8A time-
delayed fuse (F1) which protects against short
circuits the wiring centre itself as well as the loads
connected to it.
There are two LEDS on the device front panel,
shown in Fig. 1:
- Green ‘power‘ LED, marked with the symbol ' o
oo
o '.
It is lit when the device is connected to a 230VAC
supply.
- Red LED for ' pump output and boiler active ',
marked with ' '; when at least one actuator is
energised by its thermostat both pump and boiler
contacts close (red led on the front cover turned
on), meanwhile when no actuator is active the
contacts are open.
OPERATION
When at least one thermostat connected to the
wiring centre is calling for heat, the device
immediately activates the boiler output, the relevant
channel output and the pump output.
These outputs are all immediately turned off when
no thermostat is calling for heat.
Note: actual actuator's opening and closing time
depends on the specific type of actuator installed.
TIMESWITCH INPUT
The 4-way terminal block, item Fig. 4, allows the
installer to connect an external timeswitch
(optional). This timeswitch will turn on and off the
live supply (SWL) reaching the thermostats, thus
turning them on and off according to the time
program set by the user.
The NSB terminal allows, once connected to the
relevant terminal of a suitable thermostat, the
setting of the Night Set Back mode on the
thermostat, thus setting it into the 'economy' set-
point, which can be fixed or variable, according to
the manufacturer's choice.
Where a timeswitch is not used or for night setback
thermostats, connect a link between thermostat
terminals TL and C - see Fig. 5.
INSTALLATION
In order to install the device proceed as follows:
- Remove the 5 screws labelled as in Fig. 1 then
remove the front plastic cover.
- Fix the device base to the wall by using the two
screw holes labelled in Fig. 2.
When workin with electric tools in close
proximity to the electronic parts, double check
that the device is completely disconnected
from 230V~ mains and take care to avoid
dama in the circuits or components.
- Make the electrical connections as shown in
' Electrical Connections ' below.
- Cable entry:
Cable entry through the slots in the bottom
side :
Using pliers, carefully remove the plastic ‘teeth'
pointed by the arrow in Fig. 3 then, after
connecting the cable to the appropriate terminal,
bend it as shown in Fig. 3.
Cable entry through the top slots in the left
side :
Using pliers, carefully remove the plastic ' teeth '
shown arrowed , Fig. 3, then after connecting
the cable to the appropriate terminal, bend it as
shown in Fig. 3 and clamp using the clamps
provided.
- Close the device cover, by locating it on the base
then screw the 5 closing screws.
ELECTRICAL CONNECTIONS
a WARNING
Please ensure that the electrical wirin of the
installation and connections to and from the
wirin centre are in accordance with BS 7671,
the latest edition of the IET Wirin Re ulations.
The thermostat must be wired to the mains
electric supply throu h a switch capable of
disconnectin all poles compliant to the current
safety standards and with a contact separation
of at least 3 mm in all poles.
Before commencin work on the installation,
the electricity supply must be disconnected.
Please read the followin carefully and also
consult the wirin dia ram, Fi . 5, which shows
the connection of the power supply and external
components to the wirin centre.
Terminals L and N are the inputs for the power
supply: connect to 230V , making sure that terminal
N is wired to the Neutral. The electronic circuitry
and loads are protected by the 8A time-delay fuse
F1 ( Fig. 4).
The wiring centre provides an earthing terminal
block (yellow) - see Fig. 4.
These are for ensuring earth continuity between the
earth conductor in the mains supply cable and any
earth conductor for devices connected to the wiring
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4
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