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Engineering notes (cont'd)
Connect safety limit thermostats (manual reset) in the line (e.g. «SB»)
Remote reset
When connecting lockout reset button «EK2» between terminals 21 and
- terminal 3: For remote reset only
- terminal 1: For remote reset and remote emergency shutdown
With LAL1...: Required switching capacity of
- switching devices connected between terminals 4 and 5 (refer to «Technical data»)
With LAL2 / LAL3: Required switching capacity of
- switching devices connected between terminal 12 and «LP» (refer to «Technical data»)
- «LP» (refer to «Technical data»)
When using series connection, the control contacts of other devices contained in the burner plant must be
connected as follows:
- to terminal 4 or 5 contacts that must be closed from startup to controlled shutdown otherwise no startup
or shutdown
- to terminal 12 (not with LAL1) contacts that must only be closed on startup otherwise no startup
- to terminal 14 (not with LAL1) contacts that must be closed no later than at the beginning of short
preignition or long preignition and that must remain closed until controlled shutdown occurs
otherwise lockout
Maximum current draw, refer to «Technical data»
«Z» connected to terminal 15 short and long preignition
For use in applications with short preignition, the oil supply must be equipped with two shutoff valves
connected in series.
Observe the following:
EN 298:2012, Section 7.101.3.3 Prepurge time for oil burner control systems and the corresponding
application standards.
Connection of «BVx» to terminal 20, refer to «Connection examples»
When using burners without air damper, or with an air damper not controlled and monitored by the LAL...,
terminal 8 must be connected to terminal 6
Wire link «B» clearly marked on the underside of the LAL...
When wire link «B» is fitted, the LAL initiates lockout if loss of flame occurs during operation. For repetition of
the startup sequence, wire link «B» on the plug-in section of the LAL must be cut away. Just cutting is not
permitted!
Note!
In applications involving air heaters (WLE), or in the case of oil burners with a maximum throughput
of >30 kW/h, removing wire link B is not permitted.
For the permissible lengths and laying of detector cables, refer to «Flame supervision»
4/24
Building Technologies Division
CC1N7153en
21.09.2016
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