User Manual

15/16
Building Technologies Division CC1N7118en
19.05.2016
Connection diagram inclusive
internal diagram
Control sequence
LOA26.171B27
With ARK21
remote lockout
reset module
EK1
7118a08/1004
1
2
10
8
3764
5 9 11 12
L1
ba
tz2
TZ
c
tz1
K
d
e
FR
V
fr
W
SB
R
Si
L
N
OW
OH
N
M
Z
BV2
QRB
bl
QRC
sw
br
1
AL
BV1
10
EK2
210
13
14
9
ARK21A27
SA
N
x
yz fg
R
SB
W
OH
OW
M
Z
BV1
BV2
FS
A´
AB C
D
1
8
3
3
7
6
4
5
11
12
tw
t1
t3
t3n
TSA
t4
7118d05/0402
SA
LOA36.171A27
With ARK21
remote lockout
reset module
EK1
7118a09/1004
1
2
10
8
3764
5 9 11 12
L1
ba
tz2
TZ
c
tz1
K
d
e
FR
V
fr
W
SB
R
Si
L
N
OW
OH
N
M
Z
BV2
QRB
bl
QRC
sw
br
1
AL
BV1
10
EK2
210
13
14
9
ARK21A27
SA
N
L2
LED1
f
gxyz
R
SB
W
OH
OW
M
Z
BV1
BV2
FS
A´
AB C
D
1
8
3
3
7
6
4
5
11
12
tw
t1
t3
t3n
TSA
t4
7118d05/0402
SA
AL Alarm device OW Release contact of oil preheater
BV... Fuel valve OH Oil preheater
EK1 Lockout reset button QRB… Photoresistive detector
EK2 Remote lockout reset button QRC… Blue-flame detector
FR Flame relay with contacts «fr» bl = blue, br = brown, sw = black
fr Bridging contact for release contact of the oil R Control thermostat or pressurestat
preheater SA Actuator with automatic setback
FS Flame signal SB Safety limit thermostat
K Catch of flame relay for locking contact «tz1» Si External primary fuse
in the event of premature flame signals or for TZ Thermal-electric sequence switch
locking the contact when the flame signal is tz... Contacts of the thermoelectric programmer
correct W Limit thermostat or pressure switch
L1 Indication of faults (red) V Flame signal amplifier
L2 Indication of operation (orange) Z Ignition transformer
LED1 Indication of flame strength (green)
M Burner motor A´ Beginning of startup with burners using an oil
preheater
TSA Ignition safety time A Beginning of startup with burners without an oil
tw Waiting time preheater
t1 Prepurge time B Time of flame establishment
t3 Preignition time C Running position
t3n Long postignition time D Controlled shutdown by control thermostat /
t3n´ Short postignition time pressurestat
t4 Interval between flame signal and release of
Control signals delivered by the LOA...
«BV2»
Required input signals
Permissible input signals
Legend