38
Installation instructions
4.4
ELECTRICAL WIRING DIAGRAM OF AN
ELCO THREE PHASE BURNER TO THE
BASIC CONTROL PANEL
(MAX OUTPUT
CONTACTS 1A)
C
Q
T7
T8
T6 B5
L1
B4 S3 T2 T1 N
J2
W7
W4
T6
T7
T8
B5
L1
N
T1
S3 T2
B4
J1
~50 Hz
400V
PE
L2
L1
L3
N
L
Q
PE
~ 50Hz
230V
by the installer
BOILER
CONTROL
BOX
BURNER
ELECTRICAL
CONNECTION
18
10
7
6
9
8
12
11
13 14
5
N
L
2
1
3
17
16
15
4
19 20 21
P
T
T P
T P
T P
HL2
STAB
STS
STR
STL
HLB
SAC
SAB
HLF
FU
6,3 A max
SAL
60
L10
N
N
N
83
85 84
61
82
297 296 178 86
73 51C L3 L2 L1
ACCESSORY
WIRING
ACCESSORY WIRING
C
BOILER’S CIRCULATOR
Q
MAIN SWITCH
OPERATION BULB
HLF
FU
FUSE
HLB
BLOCK BULB
SECOND FLAME BULB
HL2
RECIRCULATION SWITCH
SAC
SAL
LINE SWITCH
STR
RECIRCULATION THERMOSTAT
STS
SECURITY THERMOSTAT
STAB
HIGH-LOW FLAME THERMOSTAT
BURNER SWITCH
STL
WORKING THERMOSTAT
SAB
J1
JUMPER FOR BOILER SAFEY AND
EXTERNAL CONTROLS
J2
JUMPER FOR BURNER EXTERNAL CONTROL
Summary of Contents for TRIMAX 3SC 840-N
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