KW DIAJEKT Owner's manual

DIAJEKT Control
C F C 10 V2.0
Assembly , Installation and Operation Instructions

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I Table of Contents
I Table of Contents 3
1 Product Information............................................................................................................................... 4
1.1 S c o p e of Delivery ............................................................................................................................. 4
1.2 A c c e s s o r i e s ................................................................................................................................... 5
1.3 A s s e m b l y ........................................................................................................................................ 6
1.3.1 Mechanical Connections.......................................................................................................... 8
1.3.2 Electric Connections ........................................................................................................... 10
1.4 R a n g e of Use .................................................................................................................................. 15
1.4.1 Combinations............................................................................................................................. 15
1.5 M o d e of Operation......................................................................................................................... 19
1.6 Operating Modes.............................................................................................................................. 19
1.7 U s e r Interface Set-Up..................................................................................................................... 21
1.7.1 LCD-Display......................................................................................................................... 21
1.7.2 Control Panel ............................................................................................................................. 21
1.7.3 Status LED .............................................................................................................................. 22
1.7.4 Manual Start .......................................................................................................................... 23
1.7.5 Setpoint Input via User Interface........................................................................................... 23
1.7.6 Acknowledgement of Errors .................................................................................................. 23
1.8 P a r a m e t e r i z a t i o n ...................................................................................................................... 23
1.8.1 Parameter List..................................................................................................................... 24
1.8.2 Configuration Tool “DiajektConfig“.................................................................................... 25
2 Error Processing ................................................................................................................................... 32
2.1 D e t e c t i n g Errors........................................................................................................................... 32
2.2 E r r o r Memory ................................................................................................................................ 32
2.3 E r r o r List......................................................................................................................................... 33
3 Technical Data .................................................................................................................................... 34
4 EU-Konformitätserklärung / Declaration of Conformity..................................................................... 35
II Abbreviations...................................................................................................................................... 36
IV Figures and Tables Index ........................................................................................................................ 37

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1 Product Information
DIAJEKT Control CFC10 (Chimney Fan Control) is a control and regulation unit for larger
combustion plants. The CFC10 controls and regulates the pressure between the flue gas
system and the operating room. It ensures a safe operation of the fireplace.
It can be used for all chimney fan applications, such as individual appliances, flue gas systems
with multiple fireplaces, central heating plants, giant boilers and industrial systems or bakeries
where a steady draught has to be ensured.
The Diajekt Control CFC10 can operate chimney fans with a power input of up 600W (3A).
The automatic zero balance of the CFC10‟s pressure sensor adds additional safety and
precision to the control.
1.1 Scope of Delivery
Figure 1: Scope of Delivery

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Table 1: Scope of Delivery
Name
Fig.
Item Nr
Function
CFC10
1
2002410
Steady pressure control
DPT-A
2
Differential pressure sensor for measuring the
pressure in the flue gas system with automatic zero
balance
MP
3
Measuring probe for differential pressure sensor
Silicone tube
Length 2m
4
Supply line for pressure from measuring probe to
pressure sensor (DDS-A)
Instruction
Mounting and operation instructions DIAJEKT
Control CFC10
Program CD
Configuration program “DiajektConfig”
1.2 Accessories
Figure 2: Accessories

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Table 2: Accessories
Name
Fig.
Item Nr
Function
DPS
1
Differential pressure switch for regulating the
chimney fan
TC-K
2
2002344
Mantle thermocouple Type K for measuring the
temperature in the flue gas system or the
fireplace
RSD-WS
3
2002460
2-pole maintenance switch for disconnecting the
control unit from power during maintenance
1.3 Assembly
In the case of a single configuration, the CFC10 should be installed and wired as illustrated in
the example in Fig. 3 below.
Figure 3: Single configuration

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In the case of a dual configuration, the CFC10 control can be installed and wired in either the
first or second floor depending on structural conditions as illustrated in the example in Fig. 4
below.
Figure 4: Dual configuration

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1.3.1 Mechanical Connections
The CFC10 and the pressure sensor (DPT-A) are installed in the boiler room. In flue gas
systems with several fireplaces, the measuring probe (MP) should be installed between the
last fireplace and the chimney fan or as close as possible to the chimney fan inside the flue
gas pipe or the collecting pipe of the flue gas system. The measuring probe (MP) is
connected to the pressure sensor through the silicone tube and is placed below the
installation site of the pressure sensor. For installations in vertical flue gas pipes, please
note the arrows on the measuring probe. In horizontal flue gas pipes, the measuring probe
has to be installed at an angle of at least 5% as shown in fig. 5.
Do not bend or damage the tubes when connecting or laying them. Leaky tubes and
connections will cause the control to malfunction.
The tube should ascend from the measuring probe to the pressure sensor so that no
condensate can accumulate in the tube.
Figure 5: Installing the measuring probe in horizontal flue gas pipes
Please use the connection P2 (-) on the differential pressure sensor. This connection is
designed for negative pressure measurements.

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Figure 6: Connection measuring probe and differential pressure sensor
The differential pressure sensor uses the atmospheric pressure as a reference pressure level;
therefore it must not be installed closed.

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1.3.2 Electric Connections
External appliances and connections are connected to the control with bushing clamps. The
bushing clamps are numbered serially. The configuration of the bushing clamps is shown in table
3 below.
Table 3: Recommended configuration of PG fittings on the casing
PG fittings
Configuration
Connection
PG01
Power supply
Inlet
PG02
Connection chimney fan
Outlet
PG03
Connection draught regulator (optional)
Outlet
PG04
Connection boiler release 1
In/Outlet
PG05
Connection boiler release 2 (optional)
In/Outlet
PG06
Connection alarm (optional)
Outlet
PG07
Connection CF interface (optional)
In/Outlet
PG08
Connection pressure sensor
Inlet
PG09
Connection thermal element (optional)
Inlet
PG10
Connection extension module (optional)
In/Outlet
Use the PG fittings for inserting the cables of external appliances into the casing.
Figure 7: Layout of PG fittings
Unused PG fittings have to be closed with a blank plug!

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1.3.2.1 Power Supply
The CFC10 has a far-range inlet for voltage supply. In addition to the standard value of 230VAC
(50 Hz), the device can also be operated with 110 VAC (60 Hz).
1.3.2.2 Connection Chimney Fan
Chimney fans with single-phase motors (capacitor motor) can be connected to this outlet. The
maximum capacity of the connected chimney fan must not exceed 600W (3A). The initial current
of the motor of the chimney fan must not exceed 15A.
1.3.2.3 Connection Draught Regulator (optional)
The draught regulator is switched off when the negative pressure is higher than necessary. In
this case a motor-controlled draught regulator can be activated additionally.
This relay output (closer) is intended for a motor-controlled KW draught regulator.
1.3.2.4 Connections Boiler Release 1 and Boiler Release 2 (optional)
The CFC10 turns on the chimney fan when it receives a heating request from the boiler and
immediately sends a release signal to the boiler. These connections serve to detect the heating
request and send the release signal to the boiler.
1.3.2.5 Connection Alarm (optional)
An error or malfunction is signaled through this alarm output. The outlet is a changeover contact
switch and can be used for switching a device –such as an exhaust hood or living space
ventilation or even a flare siren –on and off.
1.3.2.6 Connection CF Interface (optional)
This connection offers several inlets and outlets for chimney fans with corresponding ports. It is
possible to connect a chimney fan that accepts its selected activity value through an analog
input and send back its current activity value.
1.3.2.7 Connection Pressure Sensor
The pressure sensor is to be wired on the sensor side as shown in fig. 8. The cable insulation
has to be inserted into the casing to ensure its tightness. It is necessary to use a screwdriver of
appropriate size for the clamping bolts.

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Figure 8: Terminal layout of pressure sensor
The pressure sensor has to be wired with a screened data line 3 x 0.75 mm².
1.3.2.8 Connection Thermal Element Type K
A rise in temperature can be used as a start signal. For this purpose a thermal element type K
can be installed in the combustion chamber or in the flue gas system as closely as possible to
the combustion chamber. The thermal element is connected with the screw terminals as shown
below.
Figure 9: Terminal layout of thermal element type K

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The connection cable of the thermal element should be extended to maximally 20 m and a
suitable compensation cable should be used. The thermal element accessory is delivered with a
length of 2 m.
1.3.2.9 Connection Extension Module CE20 (optional)
This port is used for an extension module CE20. In a flue gas system with multiple fireplaces,
with more than two boilers, a CE20 has to be installed together with the control CFC10.
The extension module CE20 has ports for four additional boilers (release inlet and outlet).
Figure 10: Maximum configuration with extension module CE20
Please note that the set pressure at the measuring point has to be adequate to ensure that the
draught is sufficient at the far-off boiler.

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Table 4: Configuration of bushing clamps
Clamp
Name
Configuration
Function
1
Mains PE
230 VAC (50 Hz)
110 VAC (60 Hz)
Protective conductor mains supply
2
Mains N
Neutral conductor mains supply
3
Mains L
Outer conductor mains supply
4
Chimney fan PE
Max. 3A or up to
600W capacity
Protective conductor chimney fan
5
Chimney fan N
Neutral conductor chimney fan
6
Chimney fan L
Outer conductor chimney fan
Optional
7
Chimney fan
Switch relay
(closer)
Switch relay COM connection
8
Switch relay NO connection
9
Release 1 input L (+)
24VDC or
230VDC
Input for release signal 1
10
Release 1 N (-)
Input for release signal 1
11
Relay COM connection
Output for release signal 1
12
Relay NO connection
Output for release signal 1
Optional
13
Release 2 input L (+)
24VDC or
230VAC
Input for release signal 2
14
Release 2 N (-)
Input for release signal 2
15
Relay COM connection
Output for release signal 2
16
Relay NO connection
Output for release signal 2
Optional
17
Alarm relay COM
Error report
Relay outlet COM connection
18
Alarm relay NO
Relay outlet NO connection
19
Alarm relay NC
Relay outlet NC connection
Optional
20
Chimney fan GND
Set value display
Mass CF
21
Outlet CF power
CF analog outlet for set value display
Optional
22
Input CF motor speed
Speed
measurement
Chimney fan analog input for
measuring speed
Optional
23
Inlet CF feedback
Chimney fan
feedback
Digital feedback signal from
chimney fan

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24
Pressure sensor GND
Pressure sensor
Pressure sensor mass
25
Pressure sensor supply
24 VDC
Pressure sensor supply
26
Pressure sensor data
signal
Analog input for pressure measuring
Optional
27
Thermal element (+)
Thermal element
type K
Positive connection thermal element
28
Thermal element (-)
Negative connection thermal element
Optional
29
Connection GND
Extension
connection for
relay box
Ground connection CE20
30
Supply 24VDC
Supply for CE20
31
Gate input
Release signal for CE20
Optional
32
Gate input
Feedback for CE20
33
Outlet relay A
Detection release CE20
34
Outlet relay B
Signal release CE20
1.4 Range of Use
The range of use of the control CFC10 includes:
•Individual appliances,
•central heating plants,
•giant boilers and industrial plants,
•bakeries,
•multi-boiler systems
where a consistent draught has to be ensured.
1.4.1 Combinations
The control can be used in various combinations depending on specific requirements. Some of
the possible combinations are illustrated in the following wiring scheme.
•One boiler
•Two boilers
•Fireplace without electric start-up signal

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1.4.1.1 One Boiler
Figure 11: Wiring scheme for one boiler

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1.4.1.2 Two Boilers
Figure 12: Wiring scheme for two boilers

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1.4.1.3 Fireplace without Electric Start-Up Signal
Figure 13: Wiring scheme for fireplaces without electric start-up signal

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1.5 Mode of Operation
The DIAJEKT Control CFC10 controls and regulates the set pressure in the flue gas system.
This way it ensures a safe operation of the fireplace. In case of an error or an off-limit
condition, the CFC10 turns off the boiler and signals the malfunction via a status LED as well
as the optional alarm outlet.
The CFC10 turns on the chimney fan when it receives a heating request from the boiler and
immediately releases the boiler (see P01 pressure independent release period). It is also
optionally possible to use a rise in temperature as the start-up signal. When this period ends,
the negative pressure in the flue gas system is measured and if it is insufficient, the release is
canceled.
1.6 Operating Modes
The Diajekt Control CFC10 has the following operating modes:
Standby:
- Standby of the control. No heat requirements and no temperature increase in the
system
Leadtime:
- Leadtime operation of control. If there is a heat request or a rise in temperature is
detected, the chimney fan is run at top speed until the previously set parameter “RS-
Vorlaufzeit-P07” expires.
Regulation and Monitoring:
- Regulation and monitoring operation of the control. In this operational mode the
negative pressure in the flue gas pipe is regulated and monitored with the chimney fan
on its preset reference value.
Overtravel time with normal operation:
- Overtravel operation of the control. Once the heat request ends or a drop in
temperature below the reference value is detected, the standard operation is continued
until the previously set parameter “RS-Nachlaufzeit-08” expires.

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During all modes of operation different kinds of error recognition mechanisms are implemented
depending on the operational condition. If an error occurs, the control changes into error mode
(see section Error Processing).
During standard operation the chimney fan is turned off completely if the natural draught is
sufficient. In this case no chimney fan is needed. A motor-driven draught regulator can be
activated additionally in this situation to reduce an excessive natural draught.
If the negative pressure falls below the set value, the chimney fan is switched on again and the
draught regulator is turned off.
Figure 14: Operational modes of Diajekt control