Siemens LMV37.400A2 - Gas Pilot Ignition 1 Sequence

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Building Technologies Basic documentation LMV37.4... CC1P7546en
HVAC Products 6 Basic unit 01.12.2009
6.7.2 Gas pilot ignition 1 «Gp1 mod», «Gp1 mod pneu»
Int erval 2 t52
0°
0°
t1
p
P
P
P
0°
5 s
P
30 s
Pre ignition Ignition (Z) = ON Interval 1 t44
Operatio n 1 (stationary)
Atmospheric test Pressure test Postpurge time t8
OUTPUTS INPUTS
Fan motor (M)
Fuel
Air
Actuators
Control thermostat or pressurestat (R) ON
Air pressure switch (LP)
Pressur e switch - valve proving ( P LT)
Igni tio n transformer (Z)
Alarm (AL)
POC (alternativ to pressure switch-max (Pmax)
Fue l valve 1 (V1)
Fue l valve 2 (V2)
Test pressure switch-min (Pmin)
Postpurge time t3
Fan motor (M) = ON Safety valve (SV) = ON Air damper (LK) => Fuel valve (V) - POS
Air damper (LK) => Ignition (Z) - POS
Operation 2 air damper (LK) => Low-fire (KL) - POS
Air damper (LK) => High-fire (NL) - POS
Required position
Required position
Requir ed pos iti on
Figure 30: Program for gas pilot ignition (Gp1)