Exodraft EFC21 User manual

UK
EFC21

2 • UK 3001736 - EFC21 - UK 20210715
1. Product information......................................................................................................................3
1.1 Application .................................................................................................................................3
1.2 Description .................................................................................................................................4
2. Installation........................................................................................................................................5
2.1 Fitting the controller ..................................................................................................................5
2.2 Electrical wiring ..........................................................................................................................5
2.3 EFC21 standard installation .......................................................................................................6
2.4 EFC21 installation with external ON/OFF ..................................................................................7
2.5 EFC21 coupled directly to a gas replace control .....................................................................8
3. Commissioning .................................................................................................................... 9
3.1 Service mode ............................................................................................................................10
3.2 Setting the potentiometer .......................................................................................................10
3.3 Setting the pressure switch......................................................................................................10
3.4 Testing the commissioning set-up...........................................................................................10
4. Daily use ..........................................................................................................................................11
4.1 Extra function ...........................................................................................................................12
5. Troubleshooting ...........................................................................................................................13
5.1 Start .........................................................................................................................................13
5.2 Operating..................................................................................................................................13
6. Technical data................................................................................................................................14
7. EU Declaration of Conformity ..................................................................................................15
Symbol Legend:
Prohibition symbol Failure to observe instructions marked with a prohibition symbol
may result in serious injury or death.
Danger symbol Failure to observe instructions marked with a danger
symbol may result in personal injury and/or damage to unit.
Area of application
This instruction is for the exodraft EFC21 chimney fan control system.
The instructions must be fully observed to ensure personal safety and to protect the equipment
and ensure its correct operation.
exodraft a/s accepts no liability for accidents caused by equipment not used in accordance with
the manual’s instructions and recommendations.
!

3001736 - EFC21 - UK 20210715 UK 3
1. Product information
1.1 Application
EFC21 is used to control gas replaces that have exodraft chimney fans installed.
The control system functions as a safety monitoring system and will switch o the gas replace if
there is insucient chimney draught.
The system has been developed in accordance with standards BS 5440-1: 2008,
BS 6644 :2005+A1:2008, Appliances Burning Gaseous Fuels Directive 2016/426/EC and
EN298 (2012).
Functions
The fan will start at full speed when the EFC21 is activated. Once the system detects there is suf-
cient chimney draught, the gas replace can be lit and the fan speed will fall to the pre-set level.
The control has a step-up function and a built-in 15 second delay to avoid inadvertent cut-outs. If
the control system is switched o the chimney fan will stop.
But an optional three-minute run on can be set by the DIP switch.
Fail-safe settings
The system’s fail-safe settings can be changed in accordance with national laws and regulations.
The following function is available:
• RESET (manual/automatic) in the case of power failure or faulty chimney draught.

4 • UK 3001736 - EFC21 - UK 20210715
1.2 Description
Overview of EFC21 controller
SERVICE
MODE
1 2
MANUAL RESET
POST PURGE
Umin
+
-
OFF
ON
4512 3
12 138 9 10 11
LN
NregLINO NC C
FAN
OUT
PDS
IN
+24V
C NO
24V
+24V
24V
IN
START AIR INLET
IN OUT
RELEASE
230 VAC
SUPPLY
R
5AT PULL
C D EF I J K
R Q PO
BA H
L
STEP 2
OUT
NO
15
C
14
MNS
21 22 23
GREEN BROWN WHITE
RD11281
Ext. IR-sensor
76
LN
OUT
SMG
G
Ret også RD11472
(anden positionering, til brochure)
Rev. 1 09-09-2010 Pil til nu fast monteret sikring er fjernet
Fig.1
Pos. Description Pos. Description
A Alarm LED K Potentiometer for adjusting the fan speed
B Operating LED L Product ID
C ON/OFF button M n/a
D Fuse T 3,15 A 230 V (spare fuse is also
included)
N n/a
E Pressure switch terminal O Gas replace start terminal
F Fan terminal P Air inlet monitoring terminal
G SMG solenoid valve) Q External ON/OFF terminal
H Connection cable R Power supply terminal
I Service mode button S n/a
J DIP switch

3001736 - EFC21 - UK 20210715 UK 5
2. Installation
• All installations must be carried out by competent personnel in accordance with
national legislation and regulations.
• An isolation switch must be installed between the controller and the chimney fan.
• Refer to the chimney fan instruction when installing the isolation switch.
• The isolation switch must be ordered separately as it is not part of the
standard exodraft delivery.
• Do not connect SMG terminals 6 and 7 to any valve other than an SMG valve supplied
by exodraft.
2.1 Fitting the controller
The control panel must be tted onto a level surface with a minimum distance of 100 mm to any
corner.
The front cover is removed from the frame by twisting a screwdriver in the two holes on the sides
of the cover. The front cover can then be tipped carefully and the frame can be tted onto the wall.
Fig. 2
NB:
The front cover is tted with connection cable on the right side which limits how much this side
can be opened.
The controller covers a standard dry lining box (80 x 80 mm).
.
110
65
Fig. 3
2.2 Electrical wiring
!
• Electrical wiring of the controller must be carried out in accordance with national
legislation and regulations.
• Earth must always be connected.

6 • UK 3001736 - EFC21 - UK 20210715
2.3 EFC21 standard installation
Description
The diagram shows how a separate solenoid valve (SMG) must be connected to the EFC21. The
solenoid valve is part of the separate fail-safe system and will cut o the gas supply in the case of
insucient system chimney draught (controlled by the fan pressure switch).
• Connect the earths of the mains supply, chimney fan and solenoidvalve
together (SMG).
• Connect the chimney fan and pressure switch to terminals 1–5.
• Connect the SMG to terminals 6–7.
• Connect the optional Air inlet monitoring to terminals 10–11. If this monitoring is not manda-
tory, then a jumper must be tted across terminals 10–11.
• Connect mains supply to terminals marked ”Supply”.
Wiring diagram
Fig. 4
Unit
Chimney fan with pressure switch (PDS)
Isolation switch EFC21 Mains
SMG (solenoid valve) Gas
Fig. 5

3001736 - EFC21 - UK 20210715 UK 7
2.4 EFC21 installation with external ON/OFF
Description
Example showing how an external ON/OFF switch can be connected to a standard installation. Al-
lows the system to be switched ON/OFF by the external switch or by the controller.
• Connect the mains earth to the earth terminal of the chimney fan and to the solenoid valve
together(SMG).
• Connect the chimney fan and pressure switch to terminals 1–5.
• Connect the SMG to terminals 6–7.
• Connect the external ON/OFF switch (potential free) to terminals 8–9.
• Connect the optional Air inlet monitoring to terminals 10–11. If this monitoring is not manda-
tory then a jumper must be tted across terminals 10–11.
• Connect mains supply to terminals marked ”Supply”.
Wiring diagram
Fig. 6
Unit
Fig. 7
Chimney fan with pressure switch (PDS)
Isolation switch EFC21 Mains
External ON / OFF
SMG (solenoid valve) Gas

8 • UK 3001736 - EFC21 - UK 20210715
2.5 EFC21 coupled directly to a gas replace control
Description
Example showing how a EFC21 controller can be connected directly to a gas re without having
to use an extra SMG. This type of installation requires a re with a controller that has ame-detec-
tion and automatic ignition – or a permanent pilot light. If there is insucient chimney draught
(detected by the fan pressure switch) the controller will switch o the gas replace (potential-free
switch).
• Connect the mains earth to the earth terminal of the chimney fan.
• Connect the chimney fan and pressure switch to terminals 1–5.
• Optional external ON/OFF switch is connected to terminals 8–9.
• Connect the optional Air inlet monitoring to terminals 10–11. If this monitoring
is not mandatory then a jumper must be tted across terminals 10–11.
• Connect start/activate burn control to terminals 12–13 (potential-free switch).
• Connect mains supply to terminals marked ”Supply”.
Wiring diagram EFC21
Fig.8

3001736 - EFC21 - UK 20210715 UK 9
Unit
Chimney fan with pressure switch (PDS)
Isolation switch
EFC21
Mains
Air inlet
Gas replace control
Step 2
Gas
Fig. 9
3. Commissioning
!Commissioning is carried out with the control box open. Only touch
components with electrically insulated tools.
NB:
All windows and doors must be closed prior to commissioning. If there is another form of ventila-
tion in the room, it should be run at full speed during the commissioning.
DIP switch
Check the factory-set DIP switch setting before commissioning (Fig. 1-J).
DIP
switch Function Factory setting OFF ON
1 MANUAL RESET ON Automatic RESET
following power failure or
faulty chimney draught
Manual RESET following
power failure or faulty
chimney draught
2 RUN-ON
AFTER
VENTILATION
OFF No fan run-on Fan runs on for three
minutes

10 • UK 3001736 - EFC21 - UK 20210715
3.1 Service mode
!In service mode the PDS and Air inlet safety function are disabled.
• Open control panel.
• Press ON/OFF button (Fig. 1-C).
• If the re has to be lit during the commissioning then wait until GREEN LED is on, but not ashing.
• Press the service mode button (Fig. 1-I) on the back of the cover. Alarm LED (Fig. 1-A) will ash
RED, and the operating LED (Fig. 1-B) will ash according to the position of the pressure switch –
see the table below:
RED Insucient chimney draught (C-NC)
GREEN Sucient chimney draught (C-NO)
YELLOW No signal from pressure switch. Check the wiring
NB
The service mode will deactivate automatically after 30 minutes or the next time
the ON/OFF button is pressed.
3.2 Setting the potentiometer
• The potentiometer (Fig. 1-K) is set to maximum by turning clockwise.
• Slowly adjust the fan speed using the potentiometer. Check there are no spillages by
thoroughly checking the edge of the replace.
• If there is some leakage, increase the fan speed until leakage from the replace is no longer
detectable.
3.3 Setting the pressure switch
The pressure switch is normally tted in the chimney fan.
• Set the pressure switch to a minimum by turning anti-clockwise.
• Slowly increase the pressure switch setting until it cuts out (you will hear a click) or until the
operating LED (Fig. 1-B) changes from GREEN to RED.
• Make a note of the pressure switch setting at cut-o.
• Set the pressure switch to 10 Pa below the previously noted cut-o value.
• Press ON/OFF button (Fig. 1-C). Service mode is now deactivated.
3.4 Testing the commissioning set-up
• Check the start-up function after the commissioning by pressing the ON/OFF button.
• Start replace.
• Check there is no leakage (all doors and windows must be closed) If some other type of ventila-
tion is installed, it must be on and running at full speed.
• If a leak is detected, repeat the commissioning.
• After running for ten minutes with no leakage, turn the isolation switch o and the fail-safe
function is being checked. The replace should cut-out after 15 seconds after the pressure
switch has cut-o. Remember to switch the isolation switch back on.
• Fit the cover.
• Inform the end user about the controller functions and leave the instructions with the end user.