Siemens LMV5 Series - Function of LMV52... with O2 Trim Control; LMV52... System with O2 Trim Overview

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Siemens Building Technologies Basic Documentation LMV51... CC1P7550en
HVAC Products 2 General 01.10.2003
Fuel valve SV (GAS)X9-01.1
Fuel valve V2 (GAS)X9-01.3
Fuel valve PV (GAS)X9-01.2
Fuel valve V1 (GAS)
X9-01.4
X9-02.1
Air Pressure switch (APS)X3-02.1
P
Fuel selection GAS
X4-01.4
Fuel selection OIL
X4-01.1
X4-01.3
X4-01.2
Fan contactor (FCC) or FGR-PS
Reset / manual lockout
OIL
GAS
X5-03.1
X5-03.2
X5-03.3
X5-03.4
Controller (ON / OFF)
Controller closes / stage 3
Controller opens / stage 2
Power signal
for controller
ON/OFF
2
3
X3-02.2
Power signal for air
pressure switch (APS)
X5-01.2X5-01.3
P
X5-02.2
X5-02.3
P
min
max
Pressure switch-min-oil
Power signal for
pressure switch-min-oil
Pressure switch-max-oil
Power signal for
pressure switch-max-oil
X6-01.1
X6-01.2
X6-01.3
X6-01.4
Start release oil
Power signal for
start release oil
Heavy oil direct start
Power signal for
heavy oil direct start
START
HO-START
X9-03.4
P
X9-03.3
min
max
Pressure switch-min-gas
Pressure switch-max-gas
X9-03.2
X9-03.1
LT
Power signal for
pressure switch
Pressure switch VP gas LT or
closed position indicator (CPI)
(CPI)
X10-01.3
X10-01.2
X10-01.1
L1'
X10-01.4
PRI
LINE
SEK I
12VAC
Neutral conductor
Power signal
transformer
AC power signal G0
AC power signal G
X10-02.6
X10-02.2
QRI... (IR detector) signal voltage
Protective earth (PE)
X10-02.5
Neutral conductor (N)
X10-02.4
X10-02.3 Power supply (L)
QRI... (IR detector) power supply
X10-02.1 QRB... signal voltage
X10-03.1
Ionization probe (ION)
QRI
QRB
ION
OIL
GAS
GAS
INT
1
1
2
2
T1
AGG5.2...
ÖL + GAS
FLAME
LMV5...
LMV5...
P
P
7550a10.2e/0903
black
brown
blue
X10-01.1
LMV52...
LMV52...
Power signal for
start release gas
X7-03.3
X7-03.2
Power signal for start release gas (START)
START
LMV5...
LMV5...
Block diagram (cont‘d)