Honeywell TZI 5-15/100, TZI 7-25/20, TZI 7.5-12/100, TZI 7.5-20/33, TGI 5-15/100 Technical Information
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Industrial & Commercial Thermal
Ignition transformers TZI, TGI
Technical Information · GB
8 Edition 06.16
• Electrical ignition of gas burners
• Ignition and burner control with a single electrode possible
• TZI 7,520/33R complies with CSA
Contents
Ignition transformers TZI, TGI ....................... 1
Contents ............................................2
1 Application ........................................3
1.1 Examples of application ...........................5
1.1.1 Double-electrode operation...........................5
1.1.2 Single-electrode operation............................5
2 Certification .......................................6
3 Function ...........................................7
3.1 Connection diagrams .............................. 7
4 Selection ..........................................8
4.1 Selection table .....................................8
4.1.1 Type code..............................................8
5 Project planning information . . . . . . . . . . . . . . . . . . . . . . 9
5.1 Operation ..........................................9
5.2 Installation .........................................9
5.3 Cable selection ....................................9
5.3.1 Ignition cable ..........................................9
5.4 Reduction of EMC, wiring.........................10
5.5 Single-electrode operation .......................10
5.6 Intermittent operation/Star electrodes...........10
5.7 Duty cycle .........................................11
6 Accessories.......................................12
6.1 High-voltage cable ...............................12
6.2 Radio interference suppressed electrode
adapters ..............................................12
7 Technical data ....................................13
7.1 Dimensions ........................................14
Feedback ...........................................15
Contact.............................................15
TZI, TGI · Edition 06.16 2
= To be continued
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Application
TZI 5-15/100, T ZI 7-25/20,
TZI 7,5-12/100, TZI 7,5-20/33 TGI
1 Application
Ignition transformers TZI and TGI are designed for
high-voltage spark ignition of gas burners and gasignited or directly ignited oil burners. The ignition
transformers can also be used on burners with singleelectrode operation; the ignition current and ionization
current flow over a common electrode. The ignition
transformer TZI must be mounted in a housing, e.g. in a
control cabinet. It fulfils the requirements for enclosure
IP 00. Ignition transformer TGI in its die-cast aluminium
housing meets the requirements for enclosure IP 54. It
is suitable for on-site mounting near to the burner.
TZI, TGI · Edition 06.16 3
Application
Bogie hearth forging furnace
in the metallurgical industry
Intermittent shuttle kiln
in the ceramics industry
Walking beam furnace
with overhead firing
TZI, TGI · Edition 06.16 4
Application
1.1 Examples of application
L1
N
IFD 258
1.1.1 Double-electrode operation
Ignition using ignition electrode
Ignition transformer TGI is supplied with voltage via
VAS
TGI
GIK
BIO/
BIC
the automatic burner control unit IFD 258. The ignition
transformer generates a high voltage. This high voltage
creates ignition sparks between the ignition electrode
and burner ground. After the burner start, a current
flows via the ionization electrode for flame control.
VR..R
1.1.2 Single-electrode operation
Ignition using an ignition and ionization electrode.
L1
N
IFD 258
After burner start, a flame control current flows via the
same electrode that is also used for ignition.
VAS
TGI
GIK
BIO/
BIC
VR..R
TZI, TGI · Edition 06.16 5
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