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10 Appendix
Always connect the attached firing rates (valves etc.) to the ETAMATIC OEM (even when the
burner is off). If You could not ensure this, use an RC combination (ca. 0,15μF, ca. 220 ) be-
tween the output terminal and neutral to let the testing current flow.
WARNING!
Connect the valves directly to the terminal. The activating current of the firing rate must be
much higher than 9mA.
Fig. 10-25 Example: safety interlock chain wiring via 230 V
CAUTION!
If the safety interlock chains run open in "Burner OFF" condition, the device doesn’t execute
an interlocking. If you need interlocking in "Burner OFF" condition you need to adopt appro-
priate measures on the plant.
10.17 Valve Leakage Test Venting Over the Roof
NOTICE
Check the diameter of the gaspipe when gas will be released above the roof.
Enable terminal no. 67 for 2 sec. to release the gas.
Ensure that this time is long enough, even for mostly used gaspipes with a smaller diameter
to release the gas.
No. Description
1 ETAMATIC OEM
2 230 V contacts safety interlock chain
3 optional unlocking switch
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