CC1N7161de
06.06.2002
Siemens Building Technologies
HVAC Products
ISO 9001
7
161
Oil Burner Controls LAE1...
Series 02
supplementary Data Sheet 7713
Oil burner controls for use with burners of any capacity in intermittent operation.
For safety reasons, at least one controlled shutdown must take place every 24
hours.
The LAE1... and this Data Sheet are intended for use by OEMs which integrate the
burner controls in their products.
Use
The LAE1... with the associated flame detector RAR7 or RAR8 is used for the fully
automatic startup and supervision of
- single-stage forced draft burners
- multistage forced draft burners
- modulating forced draft burners
- with any oil throughput
The LAE1... oil burner controls are tested and certified to EN 230.
The design, control sequence and setting choices offered by the LAE1... enable this
burner control to be used in almost any type and size of oil-fired combustion plant.
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HVAC Products 06.06.2002
- Prepurge time adjustable between 8 and 63 seconds
- Operation with or without postpurge (optional)
- Fully automatic control of air damper, if required (with any actuator running time)
- Possibility of air check, in connection with a functional check of the air pressure
switch prior to startup
- Ignition (optional, either directly or with pilot burner)
- Preignition time adjustable (?long? - during prepurge, ?short? - 3 seconds)
- Safety time adjustable between 0 and 9 seconds
- Operation without or with one-time start repetition in the event of loss of flame dur-
ing operation
- Automatic extraneous light test during burner off periods and during the pre- and
postpurge time
- Integrated lockout warning lamp
- Electric remote reset
- Cover with 2 additional sealing screws to ensure protection against tampering (re-
fer to ?Dimensions?)
Warning notes
To avoid injury persons, damage to property or the environment, the following
warning notes should be observed!
The unit may only be opened, interfered with or modified by qualified staff!
g183 Before performing any wiring changes in the connection area of the LAE1..., com-
pletely isolate the unit from the mains supply (all-polar disconnection)
g183 Ensure protection against electric shock hazard by providing adequate protection
for the burner control’s connection terminals
g183 Check wiring and all safety functions prior to commissioning and each time a fuse
has been replaced
g183 Press the lockout reset button only manually, without using any tools or pointed
objects
g183 Fall or shock can adversely affect the safety functions. Such unit may not be put
into operation, even if they do not exhibit any damage
g183 Do not press the lockout reset button on the unit or the remote lockout reset button
for more than 10 seconds since this would damage the lockout relay in the unit
Mounting notes
g183 Ensure that the relevant national safety regulations are complied with
g183 Mount and adjust the flame detector such that it can detect the flame
Installation notes
g183 Installation work must be carried out by qualified staff
g183 Live and neutral conductors may not be mixed up
g183 For the connection of valves and other plant components, use the plant diagram
and the mounting and commissioning instructions provided by the burner manu-
facturer
g183 In the event of loss of flame during operation, the burner control will initiate lockout.
If start repetition is required, changeover latch ?UL3? must be set to ?Repetition?
Specific features
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Electrical connection of flame detectors
It is important to achieve practically disturbance- and loss-free signal transmission:
g183 Never run the detector cable together with other cables
– Line capacitance reduces the magnitude of the flame signal
– Use a separate cable
g183 Observe the maximum permissible detector cable lengths (refer to ?Technical
data?)
Commissioning notes
g183 Commissioning and maintenance work must be carried out by qualified staff
g183 When commissioning the plant or when doing maintenance work, make the follow-
ing safety checks:
Safety check to be carried out Anticipated response
a) Burner start with flame detector darkened Lockout at the end of ?TSA?
b) Burner start with flame detector exposed
to extraneous light
Lockout after no more than 40
seconds
c) Burner operation with simulated loss of
flame; for that purpose, darken the flame
detector in operation and maintain that
state
- With repetition: Restart fol-
lowed by lockout at the end of
?TSA?
- Without repetition: Immediate
lockout
Norms and standards
CE conformity according to the directives of the European Union
- Electromagnetic compatibility EMC 89 / 336 EEC
- Low voltage directive 73 / 23 EEC
Service notes
g183 Check wiring and all safety functions each time a unit has been replaced
Disposal notes
The unit contains electrical and electronic components and may not be disposed of
together with household garbage.
Local and currently valid legislation must be observed.
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HVAC Products 06.06.2002
Mechanical design
- For mounting on the burner, in control panels or on panel fronts
- Housing and plug-in base are made of impact-proof and flame-retarding plastic
- Unit of plug-in design, secured to the base with 4 screws
- Large wiring compartment inside the plug-in base
- Unit fuse to protect the control contacts against overloads
- Robust printed circuit board with
– sequence switch driven by a synchronous motor
– auxiliary relay
– electronic detector current amplifier
– switching, control and setting elements
Type summary and ordering
Factory settingsType reference / ordering
(type reference is given inside the housing near the contacts)
Mains voltage
Hz t1 TSA t9
LAE1/1355 AC 220...240 V 50 30 s 5 s 5 s
LAE1/8846 AC 220...240 V 50 30 s 2 s 2 s
LAE1/8863 AC 100...110 V 50 30 s 2 s 2 s
LAE1/8864 AC 100...110 V 60 30 s 2 s 2 s
LAE1/8865 AC 220...240 V 60 30 s 2 s 2 s
LAE1.1/8847 AC 220...240 V 50 15 s 2 s 2 s
LAE1... oil burner controls are supplied without terminal base.
Accessories
Terminal base AGG41041713 (AE)
- To be ordered as a separate item
- For Pg 11
Terminal base AGG11.1
- To be ordered as a separate item
- For M16 x 1.5
Flame detector RAR7 / RAR8 refer to Data Sheet 7713
g70
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Technical data
Mains voltage AC 220 V –15 %...AC 240 V +10 %
AC 100 V –15 %...AC 110 V +10 %
Mains frequency 50 Hz ±6 %
Primary fuse (externally) max. 10 A (slow)
Degree of protection IP 40
Mounting position optional
Cable glands Pg 11 or BSP ?“
Weight approx. 1.85 kg
Unit fuse (integrated) T6,3H250V to DIN EN 60 127
Power consumption
- On startup
- In operation
9 VA
6 VA
Max. perm. load on control outputs
- Per terminal
- Total (input current terminal 1)
4 A to VDE 0660 AC3
5 A to VDE 0660 AC3
Transport DIN EN 60 721-3-2
Climatic conditions class 2K2
Mechanical conditions class 2M2
Temperature range -20...+60 °C
Humidity < 95 % r.h.
Operation DIN EN 60 721-3-3
Climatic conditions class 3K5
Mechanical conditions class 3M2
Temperature range -20...+60 °C
Humidity < 95 % r.h.
Condensation, formation of ice and ingress of water are not permitted!
Refer to Data Sheet 7713!
Perm. length of connecting cable
(in the case of longer distances, use low-
capacitance cable, e.g. single-core, and
flame detector RAR8 )
20 m
Required detector current min. 8 μA
Possible detector current max. 25 μA
RAR...
+
-
M
- +
14 13 LAE1...
7161v01/1098
Legend
RAR... Flame detector
M Microammeter
General unit data
Environmental
conditions
Flame detectors
Measurement circuit
for LAE1...
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Function
The burner will be started only if
- the sequence switch of the LAE1... is in its start position
- the LAE1... has not triggered lockout
- the contacts of all control and monitoring devices in the control loop between ter-
minals 8 and 9 are closed
- the air pressure switch – if included in the test circuit – does not signal air pressure
Faults in the flame supervision section of the LAE1... prevent startup or, in the case of
startup, lead to lockout.
If the air damper is not controlled by the LAE1..., terminals 20, 21 and 22 must be inter-
connected.
The LAE1... can control the following burner plant components:
- Fan motor
- Flue gas fan
- Air damper
- Ignition transformer
- 1 to 3 fuel valves
- 1 external fault indication unit
A load controller with 3-position output can be connected.
Specific features
- Continuous indication of the program sequence in the viewing window of the unit
cover
- In the event of fault, the program indicator shows the program phase during which
lockout occurred
- The motor of the sequence switch can be switched off to facilitate the burner set-
ting procedure
- The cam shaft can be rotated manually
... on startup
First, the fan motor is switched on via terminal 3 and the actuator is controlled via ter-
minal 22. When the air damper reaches its maximum position, the sequence switch of
the LAE1... starts to operate and the prepurge time commences. The minimum air
pressure set on the air pressure switch must then be reached within 10 seconds (or
within 7 seconds in the case of operation with postpurge) and be maintained until con-
trolled shutdown occurs. Otherwise, the burner control will initiate lockout. A flame sig-
nal during the prepurge time also leads to lockout. On completion of the adjusted pre-
purge time, the air damper is given the control command to return to the minimum posi-
tion. During the time the air damper is closed, the sequence switch does not operate.
As soon as the signal contact for the minimum throttling setting is actuated by the ac-
tuator, the sequence switch starts again and controls the program sequence which can
no longer be influenced from outside:
- Preignition (if the ignition equipment was not already switched on during the pre-
purge time)
- Release of the first fuel valve connected to terminal 5 (the fuel valve of a pilot
burner which, on completion of the second safety time must be switched off, is to
be connected to terminal 10, however)
- Completion of the adjusted safety time. If, during this period of time, no flame is
established, the burner control will initiate lockout with interlocking
- 11 seconds after release of the first fuel valve, the second fuel valve will be re-
leased
- The pilot burner – if present and connected to terminal 10 – will be shut down
- The load controller will be switched on after another interval of 12 seconds, which
means that the burner’s operating position is now reached. From now on, the load
controller controls burner output by increasing or decreasing the oil throughput and
the amount of air, depending on the demand for heat
Preconditions for
burner startup
g70
Startup sequence
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If the flame is lost during operation, the burner control will initiate lockout or – if operat-
ing mode ?with start repetition? is used – make a new start.
In that case, the sequence switch must return to its start position, however, and post-
purging will take place – if programmed.
... after a controlled shutdown
Controlled shutdown occurs as soon as a control or monitoring device in the control
loop between terminals 8 and 9 opens its contact.
The fuel valves are immediately shut and postpurging, if included, will start.
The sequence switch will return to its start position where it stays until the next switch
on command is given.
... after lockout of the LAE1...
After pressing the integrated or external lockout reset button, the sequence switch will
return to its start position, provided the fault has been corrected.
The only component of the burner plant that is switched on here is the fan motor con-
nected to terminal 17.
Since in normal circumstances, the control thermostat or pressurestat continues to call
for heat, the sequence switch initiates a new start after it has reached its start position.
Control sequence
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Program sequence indicator
LANDIS & GYR
Type Serie ts s
V~ c/s Hz VA
4A V~ 2A
3 5 6 7 10111720212
1 23
t1
A
B
C
E
F
G
= 8...63 s
(1)
7161p02/0102
40
30
The program sequence indicator shows the respective startup position.
The letters correspond to those given in the sequence switch diagram beside the
viewing window.
The numbers give the remaining prepurge time.
In the event of lockout, the sequence switch and the program sequence indicator stop,
thus indicating the operating phase during which lockout occurred.
E
F
7
1
61
p04
/0
1
02
40
30
716
1p
03
/0
10
2
Valve 2 connected to terminal 7
will be opened
Prepurge time lasts another 35 seconds
Two changeover latches on the underside of the burner control can be used to make
the following settings:
Long preignition time During prepurging Factory settingUL2
Short preignition time 3 seconds ---
With repetition In the event of loss of flame
during operation
---UL3
Without repetition In the event of loss of flame
during operation
Factory setting
The factory setting can only be changed after loosening the screw.
Retighten screw properly!
Reading the program
sequence indicator
Changing the
control sequence
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Settings and adjustments on the burner control
g183 Loosen all 6 screws and remove the cover of the LAE1...
g183 Always start counting the switching cams from the motor side
g183 You can manually turn the cam shaft to any position you want
(clockwise rotation as seen from the motor)
UL1 N1 N2 N7 N8 PA
7
1
61p05/010
2
Setting elements
N1 Cam 1, fixed
N2 Cam 2, adjustable (safety time)
N3 Cam 3, adjustable (safety time)
N7 Cam 7, fixed
N8 Cam 8, adjustable (prepurge time)
PA Sequence position indicator
UL1 Operating switch ON / OFF
for sequence switch motor
On the underside of the base:
UL2 Changeover latch ?Short / long? preignition time
UL3 Changeover latch ?With / without? repetition
Adjusting the prepurge time ?t1?
- Loosen the fixing screw of the red cam N8
- Turn cam shaft manually until the required prepurge
time is indicated next to the index notch on the se-
quence switch carrier
- Hold the cam shaft firm and turn cam N8 until the
tappet operated by it trips, or until the cam stops at
this tappet
- Tighten the cam’s fixing screw carefully and then
check the adjusted time.
The adjusted time is also visible through the viewing
window when the LAE1... is in its start position
Adjustment of the mark of the red cam N8 to the gradua-
tion marks of the block cam N7 results in the prepurge
times given in the adjacent table.
g73 g73g73 g73g73g73 N7 N8
7161p06/0102
Adjustment to t1
Graduation mark I 8 s
Graduation mark II 18 s
Graduation mark III 28 s
At stop 63 s
Factory setting approx. 30 s
Adjusting the safety time ?TSA?
- Loosen the stop screws of cams N2 and N3
- Hold cam N1 firm and align the graduation mark of
cam N2 to the corresponding time marking of cam
N1 (intermediate positions possible) (see adjacent
illustration and table). Lock cam N2
- Set adjustment mark of cam N3 to the lowest stop of
cam N2 and lock cam N3
- Check the adjusted safety time and adjust the new
value on the rating plate of the cover
(adjustment slot on the underside of the cover)
III II I N1 N2
7161p07/0102
Adjustment to TSA
Graduation mark I 0 s
Graduation mark II 4.5 s
Graduation mark III 9 s
Factory setting g163 5 s
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Connection diagram
Unit fuse 6.3 A (slow) in the current path between terminal 1 and relay contact ?br...? is
not shown.
L
1
EK2
16
15
14
LF
+
13
12
L2
17
M2
M
~
11
OV3OV2
7105
(OV)OV1
Z
N
26
19 9 4
18 83
LP
P
W
R
T
T
N
M
~
~
LK
N
20
az
M1
2122
(11)
NTC
FR
XI
a
VIII
a
fr
2
IX
b
br1
VIII
b
ar1 ar3
EK1
XIII
ba
IX
a
IV
ab
XII
ab
IVII
UL2
b
IV
I
a
UL3
fr1
XI II
a
b
b
X
AR
br2
BR
III
V
b a
VI
SM
ar2
UL1
L1
7161a01/1098
SB
AR Load relay with contacts ?ar...? LP Air pressure switch
BR Lockout relay with contacts ?br...? M... Fan
EK1 Lockout reset button on the LAE1... NTC High temperature conductor (delay device)
(do not press ?EK1? for more than 10 seconds!) OV... Oil valve
EK2 Remote lockout reset button (OV) Fuel valve for a pilot burner, will be switched off on
(do not press ?EK2? for more than 10 seconds!) completion of the 2
nd
safety time
FR Flame relay with contacts ?fr...? R Control thermostat or pressurestat
L1 Fault indication lamp (integrated) SB Safety limit thermostat
L2 Fault indication lamp (external) SM Synchronous motor of sequence switch
LF Flame detector RAR... UL1 Operating switch for sequence switch motor
LK Air damper actuator with end or auxiliary switches (only accessible when cover is removed)
a = actuator travels to the ?fully open? position UL2 Changeover latch ?Long / short preignition time?
(max. air volume) UL3 Changeover latch ?With / without repetition?
z = actuator travels to the ?fully closed? position W Limit thermostat or pressure switch
(min. air volume) Z Ignition transformer
Legend
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Time diagram of sequence switch
The maximum permissible afterburn time is 7 seconds – from the start of ?t6?.
Customer-specific presettings of the times on request!
t3
t7
t10
t1
t11
t8
T
t12
t6
TSA
t4 t9
t3′ t5
3
63
66
70
93
86
67
89
79
81
a
b
a
b
a
b
a
b
a
b
a
b
a
b
a
b
a
b
I
II
III
IV
V
VI
VII
VIII
IX
X
XI
XII
XIII
7161d01/1098
T 120 s Cycle time of the sequence switch
TSA 0...9 s Adjustable first safety time
t1 8...63 s Adjustable prepurge time
t3 t1 + t11 + t12 + 7 s ?Long? preignition time
t3′ 3 s ?Short? preignition time
t4 11 s Interval between release of 1
st
and 2
nd
fuel valve
t5 12 s Interval between release of 2
nd
and 3
rd
fuel valve or
load controller
t6 T – (30 + t1) Postpurge time
t7 3 s Delay time
t8 t1 + 30 + t11 + t12 Total startup time
t9 5 s Second safety time (only with pilot burner)
t10 10 s Bridging time (predefined time for air control)
t11 optional Opening time for the air damper
t12 optional Closing time for the air damper
Legend
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Connection examples
Connection diagram and sequence program for operation with long preignition and
repetition (actuator control checked, no load control).
When using an air pressure switch LP, the connections between terminals 3 and 4
and 8 and 18 are not required
1 2 13 14 15 16 12 19 18 8 9 4 3 22 21 20 17 6 5 7 11
UL.3
UL.2
M1 M2
MM
c1
e1
L
c2
e2
H
N
+
LF
EK
2
L2
LPP
c1
W
R
T
T
e1
c1
1 2 12 11
a z
M
N LK
e2
d1
c2
Z
OV1
OV2
OV3
d1
d1
Repetition
Repetition
LAE1
7161a02/1098
SB
Luft
?l
M
LK
OV3
OV2
OV1
7161s01d/1095
Air damper control (in detail)
In the case of burners without air damper
or an air damper not controlled by the
LAE1..., terminals 20, 21 and 22 must be
interconnected.
In that case, current path 18-c1-21 must
not be present!
t11 t1 t12 t11 tn t6 t12
22
21
21/d1
18/c1/d1
20
LK"a"
LK"z"
A BCDE
7161d03/1095
AB
M
t8
t7
t11 t1 t12
TSA
t3
t4
t5
M1
M2
LK
Z
OV1
OV2
OV3
FW
L2
Kl.3
17
22/21
6
5
7
11
13/14
12
tn
C
t6
DE F
t8
GH
t6
t7
t1
TSA
t3
KL M
7161d02/1098
I
Legend
A Start G-H Operation
A-B Normal startup H Loss of flame
B-C Operation H-I Return to start position
C Controlled shutdown I Repetition
C-D Postpurging I-K Startup without establishment of flame
D-E Closing the air damper K-L Fault
E-F Burner off period L Reset
F Restart L-M Return to start position
F-G Startup M Restart
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HVAC Products 06.06.2002
Connection examples (cont’d)
Connection diagram and sequence program for operation with short preignition and without repetition.
Ignition of main burner with light oil pilot burner (on / off control with checked actuator control).
When using an air pressure switch LP, the connections between terminals 3 and
4 and 8 and 18 are not required
P
H
M1 M2
MM
c1
e1
c2
e2
L
1 2 12 13 14 15 16 17 18 8 9 4 3 22
N
L2
+
LF
EK2
c2
e2
c1/c2
LP
T
T
W
R1
c1
e1 c1
1
a
LK
100%
M
2
z
11 12 36
13 14
15 17
20 21 5610
BS
I
II III
IV
T
R2
d1
46%31%38%
16
N
0% 33%
4 5 78
(SQ...)
OV3
Z
(OV)
OV2
d1
UL.2
UL.3
Repetition
Repetition
711
7161a03/0202
LAE1
19
SB
?l
Luft
Leicht?l
OV3
OV2
M
LK
(OV)
7161s02d/1195
Control switch ?BS?
I High-flame
II Stop
III Low-flame
IV Automatic control
Air damper control (in detail) g174
AB CDE
18/c1
"a"
20
"kl.Fl."
"z"
t11 t1 t12 t11
7161d04/0998
22/c1
21/d1
21/d1/
BS/R2
M1
M2
LK
Z
(OV)
OV2
OV3
FW
L2
A B C D E F G H IK L
t6
t7
t1
TSA
t3′
t4
t5
t9
t8
t7
t11 t1 t12
t6
TSA
t3′
t4
t5
t9
Kl.3
17
22/21
6
10
7
11
13/14
12
7161d05/1098
M
Legend
A Start G-H Operation
A-B Normal startup H Loss of flame
B-C Operation H-I Fault
C Controlled shutdown I Reset
C-D Postpurging I-K Return to start position
D-E Closing the air damper K Restart
E-F Burner off period K-L Startup
F Restart L Operation
F-G Startup
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Connection examples (cont’d)
Connection diagram for modulating burner control with checked actuator control.
Burners designed for modulating burner control also use the devices of the temperature or pressure control loop, in
addition to the standard burner control equipment.
Example:
- One modulating controller with a 3-position output
- Temperature or pressure sensor QA... / QB...
- One actuator for the control of the air damper and oil throughput SQ...
- One auxiliary relay d1
- One control switch BS
- One oil volume controller RV
When using an air pressure switch LP, the connections between terminals 3 and
4 and 8 and 18 are not required
1 2 13 14 15 16 12 19 18 8 9 4 3 20 22 21
d1c1
e1
c1
c1
10 11 17 6 5 7
e2
c2
d1
Q...
c1/c2
H
M1 M2
MM
c1
e1
c2
e2
LN
LF
+
EK
2
L2
P
LP
T
T
W
R
M
a z
12
LK
11
12 N
RV
SQ...
Z
OV1
BS
I
II
III
IV
LAE1
7161a04/1098
SB
Luft
?l
M
OV1 RV
SQ
.
.
.
LK
7161s03d/1095
Control of semiautomatic operating mode
This operating mode is used when, for specific reasons, fully automatic
operation is not desired.
Example: Industrial burners
The burner is started by pressing button I (N.O.). Burner shutdown is
achieved either by pressing button 0 (N.C.) or when there is a response
from the limit thermostat.
18 8 9
L
N
I 0
DK
W
T
7161a05/1098
Air pressure switch LP
(Recommended for burners that use separate motors for the fan and the
fuel pump).
The air pressure is continuously monitored from burner startup through
controlled shutdown.
If 10 seconds after the start of prepurging, or 7 seconds with the pro-
gram with pre- and postpurging, the adjusted and required minimum air
pressure is not reached, or if the air pressure drops again, the burner
control will initiate lockout.
If air pressure switch LP is connected as shown in the adjacent diagram,
an automatic functional check is made prior to each start.
If the contact position is wrong, there will be no start.
(17)
3 4 8 9 18 19
e
M
c
ma
x
.
5
A
0,1 A
LP
P
T R
WT
N
~
7161a06/1098
M
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AR Load relay with contacts ?ar...?
BR Lockout relay with contacts ?br...?
BS Control switch
c... Fan contactor with contacts ?c...?
d... Auxiliary relay with contacts ?d...?
DK Button
e... Thermal overcurrent release
EK1 Lockout reset button on the LAE1... (do not press ?EK1? for more than 10 s!)
EK2 Remote lockout reset button (do not press ?EK2? for more than 10 s!)
FR Flame relay with contacts ?fr...?
FW Flame supervision
H Main switch
L Lamp
L1 Fault indication lamp (integrated)
L2 Fault indication lamp (external)
LF Flame detector RAR...
LK Air damper actuator with end or auxiliary switches
a = actuator travels to the ?fully open? position (max. air volume)
z = actuator travels to the ?fully closed? position (min. air volume)
LP Air pressure switch
M... Fan
NTC High temperature conductor (delay device)
OV... Oil valve
(OV) Fuel valve for a pilot burner, will be switched off
on completion of the second safety time
R Control thermostat or pressurestat
RV Control valve
SB Safety limit thermostat
SM Synchronous motor of sequence switch
UL1 Operating switch for sequence switch motor
(only accessible when cover is removed)
UL2 Changeover latch for ?Long / short? preignition time
UL3 Changeover latch for ?With / without? repetition
W Limit thermostat or pressure switch
Z Ignition transformer
Legend
16/16
Siemens Building Technologies CC1N7161de
HVAC Products 06.06.2002
Dimensions
Dimensions in mm
1
17
116
2
PG11/3/4"-16DNF
A
210
B A
A B A
13
,5
14
,
5
25
25
14
0
4,5
SG
EK
17
,
2
18,
9
4,
5
17,
2
105
17,7
139
,
4
933333333
17,7 174
209,4
46
,
7
36
,
7
33
69
,
7
CC
C
7161m01/0202
LAE1...
AGG41041713 (AE)
1
17
11
6
2
M16 x 1,5
AGG11.1
LAE1...
To remove the LAE1... from its plug-in base, it is merely necessary to loosen the 4
screws ?A?.
To remove the unit cover, also loosen the 2 screws ?B?.
C Elongated holes for fixing the plug-in base
SG Viewing window
EK Lockout reset button
Legend
g2272002 Siemens Building Technologies AG
Subject to change
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