krom schroeder TC 1 Operating Instructions Manual Download Page 10

TC 1, TC 2, TC 3 · Edition 07.22

EN-10

10 MAIntenAnCe

TC 1, TC 2, TC 3 requires little servicing.  

We recommend that a function check is carried out 
once per year, or at least twice a year if biogas is used.

11 teCHnICAL DAtA

11.1 Ambient conditions

Icing, condensation and dew in and on the unit are 
not permitted.

Avoid direct sunlight or radiation from red-hot surfaces 

on the unit. Note the maximum medium and ambient 
temperatures!

Avoid corrosive influences, e.g. salty ambient air or SO

2

The unit may only be stored/installed in enclosed 

rooms/buildings.

The unit is suitable for a maximum installation height 

of 2000 m AMSL.

Ambient temperature: -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 ma-
terials and reduces the service life (please contact 
manufacturer). 
Storage temperature = transport temperature: -20 
to +40°C (-4 to +104°F).
Enclosure: IP 65.

This unit is not suitable for cleaning with a high-pressure 

cleaner and/or cleaning products.

11.2 Mechanical data

Gas types: natural gas, LPG (gaseous), biogas (max. 
0.1 %-by-vol. H

2

S) or clean air. The gas must be 

clean and dry in all temperature conditions and must 
not contain condensate. 
Medium temperature = ambient temperature.
Inlet pressure p

u

: 10 to 500 mbar (3.9 to 195 "WC). 

Measurement time t

M

: 5 to 30 s, adjustable. Set at 

the factory to 30 s. 
Valve opening time: 3 s.
Housing made of impact-resistant plastic.
Connectors: aluminium.
Weight:  

TC 1V: 215 g (0.47 lbs),  
TC 2 with adapter: 260 g (0.57 lbs),  
TC 3: 420 g (0.92 lbs). 

11.3 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 safety interlock/controller enable 
signal (terminal 6). 

The input current at terminal 1 must not exceed 5 A.

Max. load current (terminal 6) for safety interlock/
controller enable and valve outputs (terminals 15 
and 16):  
at 230/120 V AC mains voltage, max. 3 A resistive 
load;  
at 24 V DC mains voltage, max. 5 A resistive load. 
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.
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 mm

2

 (AWG 19), 

max. 2.5 mm

2

 (AWG 14). 

12 DesIGneD LIFetIMe

This information on the designed lifetime is based on 

using the product in accordance with these operat-
ing 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, TC 2, TC 3: 

switching cycles

time (years)

250,000

10

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 ther-

moprocessing equipment, observe local regulations.

Summary of Contents for TC 1

Page 1: ...r 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 1 2 Explanation of symbols 1 2 3 a b c Action Instruction 1 3 Liability We will not be held liable for damage resulting from non observance of the instructions and non com pliant use 1 4 Safety instructions Information that is relevant fo...

Page 2: ...ype code TC 1C TC 2 TC 3 TC Tightness control 1C For attachment to CG 2 For quick opening individual valves 3 For quick or slow opening individual valves R Rp internal thread N NPT internal thread 05 pu max 500 mbar W Mains voltage 230 V AC 50 60 Hz Q Mains voltage 120 V AC 50 60 Hz K Mains voltage 24 V DC W Control voltage 230 V AC 50 60 Hz Q Control voltage 120 V AC 50 60 Hz K Control voltage 24...

Page 3: ... with proof of closure switch VCx S or VCx G Connect the TC to the inlet pressure connection pu and the interspace pressure connection pz of the inlet valve Ensure that connections pu and pz on 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 In the case of a VCx combination it is recommend ed to a...

Page 4: ...not reversed pz pz pd pu TC 3 R Rp TC 3 N NPT Use a 12 x 1 5 or 8 x 1 pipe for the pipe con nections pu pd pz 1 Mount TC 3 Only use approved sealing material to seal the pipe connections 2 Seal the unused connection pz on the TC using the sealing plug supplied 4 WIRING WARNING Risk of injury Please observe the following to ensure that no damage occurs Electric shocks can be fatal Before working on...

Page 5: ... 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 available for forwarding They are designed as distributor 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 1 T...

Page 6: ...of malfunction Continue with page 6 7 Setting the measure ment time 7 SETTING THE MEASUREMENT TIME The measurement time tM can be set with a jumper in increments of 5 s to max 30 s tM is set to 30 s at the factory tM 5s 10s 15s 20s 25s 30s No jumper no function The operating signal LED is permanently red see page 8 9 Assistance in the event of malfunction The longer the measurement time tM the gre...

Page 7: ...ing the measurement time tM is available at www adlatus org Calculation example Qmax 100 m3 h pu 100 mbar VP VV L x VR 7 l QL 100 m3 h x 1000 1000 100 000 l h 1000 100 l h tM s 2 5 x pu mbar x VP l QL l h 2 5 x 100 x 7 100 17 5 s Set the next highest value in this example 20 s 7 5 Setting the measurement time on the device To set the calculated measurement time the jumper in the device must be rec...

Page 8: ...operating status In the case of untested valves the 1 and 2 LEDs are yellow There is mains voltage at terminal 1 and renewed test after switching off the voltage to termi nal 10 thermostat start up signal During the test the 1 and 2 LEDs will flash yellow 8 4 After the test The 1 and 2 LEDs are green Both valves are tight Mode 1 or Mode 3 the enable signal is issued via terminal 6 when voltage is ...

Page 9: ...oo 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 or 2 LED is permanently red The valve is leaking The TC performs a fault lock out Replace the valve Wiring of...

Page 10: ... 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 safety interlock controller en...

Page 11: ...ion is subject to the surveillance proce dure pursuant to Regulation EU 2016 426 Annex III paragraph 3 Elster GmbH 14 3 SIL and PL Safety specific characteristic values see Safety manual Technical Information TC D GB F www docuthek com 14 3 1 Safety specific characteristic values for SIL and PL Mains and control voltage 120 V AC 230 V AC Diagnostic coverage DC 91 4 Mean probability of dangerous fa...

Page 12: ...ponding recycling centre Do not dispose of the unit with the usu al domestic refuse Do not burn the product On request old units may be returned carriage paid to the manufacturer in accordance with the relevant waste legislation requirements 2022 Elster GmbH We reserve the right to make technical modifications in the interests of progress The Honeywell Thermal Solutions family of products includes...

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