Siemens LMV37.400A2 - Ignition Output (Z) (SI X4-02)

44/213
Building Technologies Basic documentation LMV37.4... CC1P7546en
HVAC Products 6 Basic unit 01.12.2009
6.4.4 Output ignition (Z), type SI (IGNITION) X4–02
LMV...
Bild 285e/0409
X4-02
Protective earth (PE)
Ignition (Z)
Figure 19: Output ignition (Z) X4-02
Output for the connection of ignition transformers or electronic ignition modules.
Gas
When firing on gas, ignition is switched on in phase 38 just before reaching safety time 1
(TSA1).
The preignition time in phase 38 can be parameterized.
No. Parameter
226 Gas: Preignition time
Oil
When firing on oil, there is a choice of short preignition and long preignition (same as
with gas).
No. Parameter
281
Oil: Point in time oil is ignited
0 = short preignition (Ph38)
1 = long preignition (with fan) (Ph22)
When using long preignition, ignition is switched on in phase 22, together with the fan.
In the case of short preignition, the preignition time can be parameterized.
No. Parameter
266 Oil: Preignition time