Honeywell Kromschroder TC 1 User manual

DK S N P GR
➔www.docuthek.com
D GB F NL I E
TR CZ PL RUS H
Safety
Please read and keep in a safe place
Please read through these instructions
carefully before installing or operating. Following the
installation, pass the instructions on to the opera-
tor. This unit must be installed and commissioned
in accordance with the regulations and standards
in force. These instructions can also be found at
www.docuthek.com.
Explanation of symbols
• ,  ,  ,  ... = Action
▷= Instruction
Liability
We will not be held liable for damage resulting from
non-observance of the instructions and non-com-
pliant use.
Safety instructions
Information that is relevant for safety is indicated in
the instructions as follows:
DANGER
Indicates potentially fatal situations.
WARNING
Indicates possible danger to life and limb.
CAUTION
Indicates possible material damage.
All interventions may only be carried out by qualified
gas technicians. Electrical interventions may only be
carried out by qualified electricians.
Conversion, spare parts
All technical changes are prohibited. Only use OEM
spare parts.
Changes to edition 08.7
The following chapters have been changed:
– Installation
– Wiring
– Certification
Contents
Operating instructions
D
GB
F
NL
I
E
GB-1
05469
Translation from the German © 2018 Elster GmbH · Edition 04.18
Tightness control TC , TC , TC 
Tightness control TC , TC , TC .........
Contents ..............................
Safety.................................
Checking the usage .....................
Installation ............................
Mounting TC1V to valVario controls .........3
VAS 6 – 9, VCS 6 – 9 ......................3
Mounting TC1C to combination controlCG ...4
Mounting TC2..........................4
Mounting TC3..........................4
Wiring ................................5
Preparing the wiring ......................5
Connection diagram for TC1, TC2 ..........5
Connection diagram for TC3...............6
Finishing the wiring.......................6
Tightness test ..........................6
Setting the test instant ..................6
Setting measurement time tM.................7
Commissioning.........................8
Indicators and operating controls............8
Power failure ...........................8
Assistance in the event of malfunction .....8
Replacing the fuse .......................9
Maintenance ...........................9
Technical data ........................0
Safety information in accordance with
EN6508- ...........................0
Logistics .............................
Certification ..........................
Contact ..............................
Safety
Contents

GB-2
D
GB
F
NL
I
E
Checking the usage
TC
Tightness control for checking two safety valves be-
fore and after burner run, with adjustable measure-
ment time for adjustment to different test volumes,
leakage rates and inlet pressures. The TC is used in
industrial thermoprocessing equipment, on boilers
and on forced draught burners.
TC 1, TC 2
For gas solenoid valves, quick opening or slow open-
ing with start gas rate.
TC 3
With fitted auxiliary valves for quick or slow opening
gas solenoid valves as well as for motorized valves.
This function is only guaranteed when used within the
specified limits– see page10 (Technical data). Any
other use is considered as non-compliant.
Type code
Code Description
TC Tightness control
V
C


For attachment to valVario
For attachment to CG
For quick opening individual valves
For quick or slow opening valves
R
N
With Rp internal thread
With NPT internal thread
05 pu max. 500 mbar
W
Q
K
Mains voltage:
230VAC, 50/60 Hz
120VAC, 50/60 Hz
24VDC
/
W
Q
K
Control voltage:
230VAC, 50/60 Hz
120VAC, 50/60 Hz
24VDC
Part designations
TC 1C
TC 1V
TC 2
TC 3
pz
2
2
1
1
2
4
5
3
4
1
5
3
4
1
4
2
3
5
3
TC 1V
Connectors
5 x M16 cable glands
42 x O-rings
TC 1C
TC 1V
TC 2
TC 3
pz
2
2
1
1
2
4
5
3
4
1
5
3
4
1
4
2
3
5
3
TC 1C for combination controlsCG
1 x adapter
2 x O-rings
2 x retaining screws
Connectors
45 x M16 cable glands
52 x O-rings
TC 1C
TC 1V
TC 2
TC 3
pz
2
2
1
1
2
4
5
3
4
1
5
3
4
1
4
2
3
5
3
TC 2 for solenoid valves
1 x adapter
2 x O-rings
2 x retaining screws
Connectors
45 x M16 cable glands
52 x O-rings
TC 1C
TC 1V
TC 2
TC 3
pz
2
2
1
1
2
4
5
3
4
1
5
3
4
1
4
2
3
5
3
TC 3
Auxiliary valves
Valve block
45 x M16 cable glands
51 x screw plug

GB-3
D
GB
F
NL
I
E
Type label
▷
Gas type, measurement time, installation po-
sition, mains voltage, mains frequency, power
consumption, ambient temperature, enclosure,
max. switch-on current and max. inlet pressure–
see type label.
TC
D-49018 Osnabrück, Germany
tM(s) 5 10 15 20 25 30
Installation
CAUTION
Please observe the following to ensure that the unit
is not damaged during installation and operation:
– Dropping the device can cause permanent dam-
age. In this event, replace the entire device and
associated modules before use.
– Avoid formation of condensation in the device.
– Do not store or install the unit in the open air.
– Check max. inlet pressure.
– Use a suitable spanner. Do not use the device
as a lever. Risk of external leakage.
▷Installation in the vertical or horizontal position,
housing cover/indicators must not point upwards
or downwards. The electrical connection should
preferably be pointing downwards or towards
the outlet.
▷ The device must not be in contact with masonry.
Minimum clearance 20mm (0.78").
▷Use the O-rings supplied.
▷ In the case of very large test volumes VP, an
installed relief line should be of nominal size40
to allow for the discharge of the test volumeVP.
 Disconnect the system from the electrical power
supply.
 Shut off the gas supply.
43 5
▷The O-rings must be inserted in the connectors
of theTC.
Mounting TCV to valVario controls
▷The solenoid actuator cannot be rotated on so-
lenoid valves with proof of closure switch VCx..S
or VCx..G.
▷
Connect the TC to the inlet pressure connec-
tionpuand the interspace pressure connection
pzof the inlet valve. Ensure that connections pu
and pzon the TC and the gas solenoid valve
are not reversed.
▷TC and bypass/pilot gas valve cannot be fitted
together on the same side of the double block
valve.
▷ When using a valve/pressure regulator combi-
nation VCG/VCV/VCH, the pressure regulator
must be activated with air during the entire test
periodtP.
▷
The TC is secured using two captive combination
Torx screws T20(M4) inside the housing. Do not
undo any other screws!
Torx T20
VAS  – , VCx  – 
max. 250 Ncm
6 7
8
pu
pz
VAS 6 – 9, VCS 6 – 9
pu
pz
67
8
max. 250 Ncm

GB-4
D
GB
F
NL
I
E
Mounting TCC to combination controlCG
▷ Use the adapter plate supplied to mount the
TC1C to combination controlCG.
▷ Connect the TC to the inlet pressure connec-
tionpuand the interspace pressure connection
pz of the inlet valve. Ensure that connections pu
and pzon the CG are not reversed.
pz
pz
pu
pu
6
87 9
10
max. 250 Ncm
Mounting TC
▷ Connect the TC to the inlet pressure connection
p
u
and the interspace pressure connection p
z
of
the inlet valve.
▷Use the adapter plate supplied for installation.
TC 2..R: Rp ¼
TC 2..N: ¼ NPT
Rp ¼ (¼ NPT)
pu
p
z
pz
▷We recommend using Ermeto screw couplings
to attach the adapter plate to the gas solenoid
valve. It may be necessary to compensate the
distance to the valve housing.
pu
▷Only use approved sealing material to seal the
pipe connections.
250 Ncm
pu
pz
6 7 8
10 11
9 Connect the interspace pressure connectionpz
on the adapter plate to the space between the
valves using a 12x1.5 or 8x1 pipe.
pz
pz
▷ Ensure that connections puand pzon the TC
and adapter plate are not reversed.
250 Ncm
pu
pz
6 7 8
10 11
Mounting TC
▷ Connect the TC to the inlet pressure connection
pu, the interspace pressure connection pzand
the outlet pressure connection pdof the inlet
valve. Ensure that connections pu, pzand pdon
the TC are not reversed.
▷TC 3..R: Rp 1/4, TC 3..N: 1/4 NPT
pzpd
pz
pu
pu
pd
pz
▷Use a 12x1.5 or 8x1 pipe for the pipe con-
nections.
pzpd
pz
pu
pu
pd
pz
6 Mount TC3.
▷Only use approved sealing material to seal the
pipe connections.
7 Seal the unused connection pzon the TC using
the sealing plug supplied.

GB-5
D
GB
F
NL
I
E
Wiring
WARNING
Electric shocks can be fatal!
– Before working on possible live components,
ensure the unit is disconnected from the power
supply.
– Incorrect wiring may result in unsafe states and
the destruction of the tightness control, the au-
tomatic burner control unit or the valves.
– Do not reverse L1 (+) and N (–).
– Cable cross-sections must be designed for the
current rating of the selected external fuse.
– The valve outputs on the automatic burner con-
trol unit connected to the TC must be safe-
guarded by an external slow-acting fuse of max.
5 A (e.g. in the automatic burner control unit).
▷Wiring to EN60204-1.
▷
Use connection terminals with a cable cross-
section of max. 2.5mm2.
▷ Conductors which have not been connected
(spare conductors) must be insulated at their
ends.
▷Do not set the remote reset so that it operates
(automatically) in cycles.
▷ The data on the type label must comply with the
mains voltage.
▷ Length of the connection cable, see page 10
(Technical data).
CAUTION
Please observe the following to ensure that the unit
is not damaged during operation:
– Avoid voltage and current peaks! It is recommen-
ded to equip connected valves with a protective
circuit in accordance with the manufacturer’s
instructions.
 Disconnect the system from the electrical power
supply.
 Shut off the gas supply.
▷ Before opening the unit, the fitter should ground
himself.
 Open the housing cover of the TC.
Preparing the wiring
max. 3,5 Nm
24
7
3
56
7 Secure used cable glands. Tightening torque:
max. 3.5 Nm.
▷Unused cable glands are to remain closed with
a plug. Otherwise, dirt or moisture can penetrate
the housing.
8 Wire as shown on the connection diagram.
▷
For PE wire connection, 5 PE terminals are avail-
able for forwarding. They are designed as dis-
tributor terminals, e.g. to connect the PE wires
of the valves to the system PE (connection to the
system PE must be carried out/wired by the user).
Connection diagram for TC, TC
Mains voltage and control voltage:
24VDC/120VAC/230VAC
Mains voltage: 120VAC/230VAC,
control voltage: 24VDC

GB-6
D
GB
F
NL
I
E
Connection diagram for TC
▷ The tightness test is carried out with the auxiliary
valves installed on TC 3 (pre-wired). The terminals
for the valve inputs remain vacant.
Mains voltage and control voltage:
24VDC/120VAC/230VAC
Mains voltage: 120VAC/230VAC,
control voltage: 24VDC
Finishing the wiring
9
Tightness test
▷All new connections between the valve and the
TC must be checked for tightness.
 Pressurize the system. Do not exceed the maxi-
mum inlet pressure.
 Soap off pipe connections.
Setting the test instant
▷ The test instant (MODE) can be set using two
DIP switches.
 Disconnect the unit from the electrical power
supply.
▷ Before opening the unit, the fitter should ground
himself.
 Unscrew the housing cover.
 Set the test instant to Mode 1, 2 or 3.
Mode 1
tM
5s
10s
15s
20s
25s
30s
▷Mode 1: test before burner start-up with incom-
ing thermostat/start-up signalϑ(factory setting).
Mode 1
tM
5s
10s
15s
20s
25s
30s
▷Mode 2: test after burner run when the thermo-
stat/start-up signal ϑ drops and after switching
on the mains voltage.
▷The tightness test also starts after a reset.
Mode 2
▷ Mode 3: test with incoming thermostat/start-up
signal ϑbefore burner start-up and when the
thermostat/start-up signal ϑdrops after burner
run.
Mode 3
▷Invalid switch setting: no function. The
1
2
Power
LED
is permanently red, see page8 (Assistance
in the event of malfunction).
▷ Continue on page 7 (Setting measurement
time tM).

GB-7
D
GB
F
NL
I
E
Setting measurement time tM
▷ The measurement time tMcan be set with a
jumper in increments of 5s to max. 30s.
▷tMis set to 30s at the factory.
t
M
5s
10s
15s
20s
25s
30s
▷ No jumper: no function. The
1
2
Power
LED is perma-
nently red, see page 8 (Assistance in the
event of malfunction).
▷
The longer the measurement timet
M
, the greater
the sensitivity of the tightness control. The longer
the measurement time, the smaller the leakage
rate at which a safety shut-down/fault lock-out
is triggered.
▷ For all CG versions, the measurement
timetMmust be set to 5s on TC1C.
▷If no leakage rate is specified, we recommend
the max. measurement time is set.
▷ Within the scope of the European Union, the
maximum leakage rate QLis 0.1% of the maxi-
mum flow rate Qmax. [m3/h (n)].
▷If a leakage rate is specified, find the measure-
ment timetMfrom the following:
Qmax. = max. flow rate [m3/h]
QL= Qmax. [m3/h] x 0.1% = leakage rate [l/h]
pu= inlet pressure [mbar]
VP= test volume [l], see page7 (Values for
valve and pipe volume)
▷ The tightness control TC requires a minimum
start rate in order to carry out tightness tests
on slow opening valves:
up to 5l (1.3gal) test volume VP= 5% of maxi-
mum flow rateQmax., up to 12l (3.12gal) test
volume VP= 10% of maximum flow rateQmax..
 Determine measurement time tM.
▷Measurement times tMfor V1 and V2:
tM[s] =
2.5 x pu[mbar] x VP[l]
QL[l/h]
▷
The entire test period is made up of the meas-
urement timestMof both valves and the fixed
opening timetLof both valves together:
tP[s] = 2 x tL+ 2 x tM
Values for valve and pipe volume
LVP= VV+ L xV
R
VP
V1
V2
Valves
Valve
volume
VV[l]
Nomi-
nal size
DN
Pipe
volume VR
[l/m]
VG 10 0.01 10 0.1
VG 15 0.07 15 0.2
VG 20 0.12 20 0.3
VG 25 0.2 25 0.5
VG 40/VK 40 0.7 40 1.3
VG 50/VK 50 1.2 50 2
VG 65/VK 65 265 3.3
VG 80/VK 80 480 5
VG 100/VK 100 8.3 100 7.9
VK 125 13.6 125 12.3
VK 150 20 150 17.7
VK 200 42 200 31.4
VK 250 66 250 49
VAS 1 0.08
VAS 2 0.32
VAS 3 0.68
VAS 6 1.37
VAS 7 2.04
VAS 8 3.34
VAS 9 5.41
VCS 1 0.05
VCS 2 0.18
VCS 3 0.39
VCS 6 1.11
VCS 7 1.40
VCS 8 2.82
VCS 9 4.34
Calculation example:
Qmax. = 100 m3/h
pu= 100 mbar
VP= VV+ L x VR= 7 l
QL= 100 m3/h x 0.1% = 100 l/h
2.5 x 100 x 7 = 17.5 s
100
Set the next highest value (in this example 20s)
with the jumper.
 Disconnect the unit from the electrical power
supply.
 Unscrew the housing cover.
4 Set the jumper to the position for the required
measurement time.
5 Position the housing cover and screw tight.
6 Mark the set measurement timetMon the type
label with a waterproof pen.
TC
D-49018 Osnabrück, Germany
tM(s) 5 10 15 20 25 30
▷The entire test period for this example is as fol-
lows: 2 x 3 s + 2 x 20 s = 46 s.

GB-8
D
GB
F
NL
I
E
7 Switch on the power supply.
▷
The
1
2
Power
LED flashes yellow (0.2 s on/off). After
10s, the TC accepts the new setting and
1
2
Power
is
yellow or green, see table on page 8 (Com-
missioning).
Commissioning
Indicators and operating controls
1
2
Power
1
2
Power
= power supply
1
2
Power
= operating signal
1
2
Power
= valve 1
1
2
Power
= valve 2
= reset button
The LEDs can display messages using three colours
(green, yellow, red) and permanent
1
2
Power
or flashing
light
1
2
Power
:
LED Messages/Operating status
1
2
Power
green Power supply OK
1
2
Power
yellow TC is ready for operation; no safety
interlock* input signal
1
2
Power
green
TC is ready for operation; active
safety interlock* input signal
1
2
Power
green V1 is tight
1
2
Power
yellow V1 is untested
1
2
Power
yellow Tightness test is running on V1
1
2
Power
red V1 is leaking
1
2
Power
green V2 is tight
1
2
Power
yellow V2 is untested
1
2
Power
yellow Tightness test is running on V2
1
2
Power
red V2 is leaking
All yellow Initialization
* Linking of all the relevant safety control and switching
equipment for the use of the application. The burner
start enable signal is issued via the safety interlock
output (terminal 6).
▷ For further messages, see page 8 (Assis-
tance in the event of malfunction).
 Switch on the mains voltage.
▷ All LEDs are yellow for 1s. The TC is in the
initialization phase.
▷ The test starts according to the test instant
(Mode) which has been set.
Mode 1 or Mode 3, test before burner start-up:
voltage is applied to terminal 10 (thermostat/
start-up signalϑ).
Or
Mode 2, test after burner run: the TC shows the
last operating status. In the case of untested
valves, the LEDs
1
2
Power
and
1
2
Power
are yellow.
There is mains voltage at terminal1 and renewed
test after switching off the voltage to terminal10
(thermostat/start-up signalϑ).
▷During the test, the 1
2
Power
or
1
2
Power
LED flashes
yellow.
The
1
2
Power
and
1
2
Power
LEDs are green:
▷Both valves are tight.
Mode 1 or Mode 3: the enable signal is issued via
terminal6 when voltage is applied to terminal5.
Or
Mode 2: the enable signal is issued via terminal6
when voltage is applied to terminals 10 and5.
The
1
2
Power
or
1
2
Power
LED is red:
▷A valve is leaking.
▷Voltage at terminal 12. A fault signal is output.
Power failure
▷If the power fails briefly during the test or during
operation, the tightness test will restart in accord-
ance with the test procedure described above.
▷If there is a fault message, the fault is displayed
again after a power failure.
Assistance in the event of
malfunction
CAUTION
Electric shocks can be fatal!
– Before working on possible live components,
ensure the unit is disconnected from the power
supply.
– Fault-clearance must only be undertaken by
authorized trained personnel!
– (Remote) resets may only be conducted by au-
thorized trained personnel.
• Faults may be cleared only using the measures
described below.
• Press the reset button to test whether the TC
restarts.
▷ If the tightness control will not start even though
all faults have been remedied, remove the entire
TC (in the case of TC 3, including auxiliary valves
and corresponding valve block) and send it to
the manufacturer for inspection.
? Fault
! Cause
• Remedy
?
1
2
Power
red and permanently lit?
! There is over-/undervoltage. The TC performs a
safety shut-down.
• Check the mains voltage. As soon as there is
no longer over-/undervoltage, the TC returns to
normal operating mode and the
1
2
Power
LED is
green. It is not necessary to reset the device.

GB-9
D
GB
F
NL
I
E
?
1
2
Power
yellow and permanently lit?
! Safety interlock input signal is interrupted, no
voltage at terminal 5. The tightness test is still
being carried out. No enable signal is issued to
the automatic burner control unit.
• Check safety interlocks.
! Fuse F2 defective.
• Replace fuse F2, see page9 (Replacing the
fuse).
?
1
2
Power
yellow and flashing?
! Permanent remote reset. The remote reset signal
has been active for more than 10s.
• The warning signal is cancelled once the remote
reset signal to terminal11 has been removed.
?
1
2
Power
red and permanently lit?
! Incorrect jumper/DIP switch setting.
• Correct jumper and DIP switch setting, see
pages 7 (Setting measurement time tM)
and6 (Setting the test instant). Then press
the reset button.
! Internal error.
• Remove the unit and return it to the manufacturer
for inspection.
?
1
2
Power
red and flashing?
! Too frequent burner start commands. The TC
performs a fault lock-out. The start commands
are limited to 5x in 15minutes.
▷ As long as this limit is not exceeded, another
start-up attempt is possible after three further
minutes. If a tightness test is completed, the
counter which limits the number of start com-
mands is reset.
• Then press the reset button.
! Too many remote resets. More than 5resets
have been conducted within the last 15minutes,
either automatically or manually.
! Consecutive fault caused by a previous fault
whose actual cause has not been remedied.
• Pay attention to previous fault messages.
• Remedy cause. Then press the reset button.
?
1
2
Power
or
1
2
Power
red and permanently lit?
! The valve is leaking. The TC performs a fault
lock-out.
• Replace the valve.
! Wiring of the TC to the valves is faulty.
• Start the program and observe the interspace
pressurepz. The pressure must change during
the TEST phase. Check the wiring.
! Inlet pressurepu<10mbar.
• Provide the min. inlet pressure of 10mbar.
! Interspace pressurepzcannot be reduced.
• The volume downstream of the valve on the
burner side must be 5times higher than the
volume between the valves and atmospheric
pressure must prevail.
! The measurement time tMis too long.
• Readjust tM, see page 7 (Setting measure-
ment time tM).
?
1
2
Power
and
1
2
Power
red and permanently lit?
! During the tightness test, the TC has determined
that inlet valve1 and outlet valve2 have been
reversed (fault lock-out).
• Check the wiring. Then press the reset button.
? No LED lit even though mains voltage ap-
plied?
! Fuse F1 defective.
• Replace fuse F1, see page9 (Replacing the
fuse).
Replacing the fuse
▷
The fuses F1 and F2 can be removed for in-
spection.
▷Insert a screwdriver into the opening in the con-
tact guard to prise out the fuse.
 Disconnect the TC from the electrical power
supply.
▷ Before opening the unit, the fitter should ground
himself.
 Unscrew the housing cover.
 Remove fuse F1 or F2.
4 Check function of fuse.
5 Replace the defective fuse.
▷ When replacing the fuse, use only the approved
fuse type, see page10 (Technical data).
▷Restart the TC, see page8 (Commissioning).
Maintenance
Tightness controls TC require little servicing. We rec-
ommend carrying out a function check once a year
or twice a year in the case of biogas.

GB-10
D
GB
F
NL
I
E
Technical data
Electrical data
Mains voltage and control voltage:
120 VAC, -15/+10%, 50/60 Hz,
230 VAC, -15/+10%, 50/60 Hz,
24 VDC, ±20%.
Power consumption (all LEDs green):
5.5 W at 120 VAC and 230 VAC,
2 W at 24 VDC,
TC 3: plus 8VA for an auxiliary valve.
Fine-wire fuse:
5 A, slow-acting, H, 250V, pursuant to
IEC60127-2/5,
F1: protection of valve outputs (terminals 15
and16), fault signal (terminal12) and supply of the
control inputs (terminals 2, 7 and8).
F2: protection of the safety interlock/controller en-
able signal (terminal6).
The input current at terminal1 must not exceed
5A.
Max. load current for safety interlock/controller
enable and valve outputs:
at 230/120 VAC mains voltage, max. 3A resistive
load,
at 24 VDC mains voltage, max. 5A resistive load.
External fault signal (terminal 12):
fault output at 120 V AC/230 V AC/24 V DC mains
and control voltage: max. 5 A,
fault output at 120 V AC/230 V AC mains voltage,
24 V DC control voltage: max. 100 mA.
TC switching cycles:
250,000 pursuant to EN13611.
Reset: using a button on the device or by remote
reset.
Environment
Gas type: natural gas, town gas, LPG (gaseous),
biogas (max. 0.1%-by-vol. H2S) and air.
The gas must be clean and dry in all temperature
conditions and must not contain condensate.
Inlet pressure pu: 10 to 500 mbar (3.9 to 195"WC).
Measurement time tM: 5 to 30 s, adjustable.
Set at the factory to 30s.
Medium and ambient temperatures:
-20 to +60°C (-4 to +140°F).
No condensation permitted.
Long-term use in the upper ambient temperature
range accelerates the ageing of the elastomer
materials and reduces the service life.
Storage temperature: -20 to +40°C (-4 to +104°F).
Max. installation altitude: 2000 m AMSL.
Mechanical data
Length of connection cable:
at 230 V AC/120 V AC: any,
at 24 V DC (supply connected to PE):
max. 10 m permitted,
at 24 V DC (supply not connected to PE): any.
5 cable glands: M16 x 1.5.
Electrical connection:
Cable cross-section: min.0.75mm2 (AWG19),
max.2.5mm2(AWG14).
Valve opening time: 3 s.
Housing made of impact-resistant plastic.
Connectors: aluminium.
Enclosure: IP65.
Weight:
TC 1V: 215 g
TC 1C: 260 g (including adapter)
TC 2: 260 g (including adapter)
TC 3: 420 g
Designed lifetime
This information on the designed lifetime is based on
using the product in accordance with these operating
instructions. Once the designed lifetime has been
reached, safety-relevant products must be replaced.
Designed lifetime (based on date of manufacture) in
accordance with EN13611 for TC1–3: 250,000
switching cycles.
You can find further explanations in the applicable
rules and regulations and on the afecor website
(www.afecor.org).
This procedure applies to heating systems. For
thermoprocessing equipment, observe local regu-
lations.
Safety information in accordance
with EN6508-
See Technical Information TC (D, GB, F) –
www.docuthek.com