Unigas PN91 Manual Of Installation - Use - Maintenance page 38

LMO24 - LMO44
A
A ´
R
W
SB
t w
O H
O W
M
BV1
BV2
t 1
Z
t 3
FS
Z
FS
7130d03e/ 0700
Key
AL Alarm device
kbr... Cable link (required only when no oil pre-heater is used)
BV... Fuel valve
EK1 Lock-out reset button
EK2 Remote lock-out reset button
FS Flame signal
FSV Flame signal amplifier
K... Contacts of control relay
LED 3-colour signal lamps
M Burner motor
OW Release contact of oil pre-heater
t1 Pre-purge time
t3 Pre-ignition time
t3n Post-ignition time
A´ Beginning of start-up sequence with burners using an oil pre-
heater
A Beginning of start-up sequence with burners using no oil pre-
heater
Controller output signals
Required input signals
OH Oil pre-heater
QRB Photoresistive detector
QRC Blue-flame detector
bl = blue
br = brown
sw = black
R Control thermostat or pressurestat
SB Safety limit thermostat
Si External primary fuse
W Limit thermostat or pressure switch
Z Ignition transformer
t4 Interval from flame signal to release «BV2»
TSA Ignition safety time
tw Waiting time for oil pre-heating
B Time of flame establishment
C Operating position
D Controlled shut-down by «R»
µC1 Microcontroller 1
µC2 Microcontroller 2
B C
t 3n
TSA
t 3n t 3n
General unit data
Mains voltage
D
1
Mains frequency
8
External primary fuse (Si)
Power consumption
3
Mounting orientation
Weight
3
Degree of protection
Perm. cable lengths
4
Detector cable laid separately 10 m
5
Remote reset laid separately
6
11
Terminal 1
12
Terminals 3 and 8
Terminals 4, 5 and 10
Terminals 6
6
11
Flame supervision with QRB and QRC
12
Min. detector current required (with flame)
Min detector current permitted (without flame)
Max. possible with flame (tipically)
Measurement circuit for detector current
11
bl
Key
µA DC
bl
sw
br
SIEMENS LAL.. CONTROL BOX
Use
Control and supervision of oil atomization burners

For burners of medium to high capacity

For intermittent operation (at least one controlled shutdown every 24

hours)
Universally applicable for multistage or modulating burners

Housing and plug-in base
Made of impact-proof and heat-resistance black plastic

Lockout reset button with viewing window; located behind it:

Lockout warning lamp

Lockout indicator coupled to the spindle of the sequence switch and

visible in the transparent lockout reset button
uses easy-to-remember symbols to indicate the type of fault and the

point in time lockout occurred
Base and plug-in section of the LAL... are designed such that only burner
controls of the LAL... family can be plugged in.
24 connection terminals

Auxiliary terminals «31» and «32»

3 earth terminals terminating in a lug for earthing the burner

3 neutral conductor terminals prewired to terminal 2

14 knockout holes for cable entry by means of cable glands

8 at the side

AC 230 V +10 % / -15 %
AC 120 V +10 % / -15 %
50...60 Hz ±6 %
6.3A (slow)
12 VA
optional
approx. 200 g
IP40 (to be ensured through mounting)
max. 3m at line capacitance of 100 pF/m
20m
LMO14
5 A
3 A
1 A
1 A
12
LMO...
7130v01/0700
sw
bl
+
µA DC
QRB...
DC microamperometer with an internal
resistance of 5 k
Blue
Black
Brown
LMO24 LMO44
5 A 5 A
5 A 5 A
1 A 1A
1 A 2A
QRB QRC
45 µA 70 µA
5.5 µA 5.5 µA
100 µA 100 µA
11 12 1 LMO...
br 7130v02/0700
sw
+
µA DC
QRC1...
W
max.