8 Electrical connection
Designation
Connection
Direct extraction 1
(RA1)
: Thermal contact
+ safety switch
X9.1-X9.2
Direct extraction 2
(RA2)
: Thermal contact
+ safety switch
X9.3-X9.4
Direct extraction motor 1 (
RA1
)
1-phase with motor container auger (intermediate
pellet store)
3-phase with direct extraction
A3:X2
Direct extraction motor 1 (
RA2
)
3-phase: ,Motor for bunker filling auger; or motor for
climbing auger)
A4:X2
Direction extraction for suction systems
(only for pellets, e.g. suction auger, mole)
A1:X14
Display (Boiler control
eco
manager-
touch
) A1:X53
Electrostatic separator
230 V supply for the
high voltage module_A5
A1:X16
Electrostatic separator:
Analog output 0-10V
actual current
for high voltage module_A5
(0-4mA)
A2:X10
Electrostatic separator:
Analog output 0-10V
actual voltage
for high voltage module_A5
(0-30kV)
A2:X9
Electrostatic separator:
Analog output 0-10V
nominal current
for high voltage module_
A5
(0-4mA)
A2:X8
Electrostatic separator:
Analog output 0-10V
nominal voltage
for high voltage module_
A5
(0-30kV)
A2:X7
External boiler release
(
maxi
mus releases
additional boiler)
A1:X28
External release
of the boiler
A1:X51
Fault
A1:X29
Feed grate motor
X4.7-X4.9
Feeder motor
FU1:
U,V,W
Feeder sensor
A1:X33
Flue gas temperature sensor
A1:X34
Heat exchanger cleaning - motor
X4.10-
X4.12
Hot air fan: Fan
A1:X7
Hot air fan: Heating element
A1:X4
Induced draft fan
X4.1-X4.3
Intermediate pellet store:
Container auger
A3:X2
Intermediate pellet store:
Container flap sen-
sor
A2:X12
Intermediate pellet store:
Filling level sensor
A1:X49
Intermediate pellet store:
Suction turbine
X4.13-
X4.15
Lambda sensor
A1:X45
Overtemperature reset (OTR)
A1:X20
A1:X21
Power supply boiler 400V
X0
Designation
Connection
Return booster pump
X4.4-X4.6
Return mixer
A1:X13
Return sensor
A1:X32
Rotary drive for flue gas booster
Rotary drive for primary air
Rotary drive for recirculation
Rotary drive for secondary air
safety chain
(several safety devices are connec-
ted here)
, e.g.
EMERGENCY OFF switch
Ash box safety switch
X6.1-X6.8
Spare
A1:X6
Temperature monitor in fuel storage room
(TM)
X7.1-X7.2
Temperature monitor in fuel storage room (TM)
:
Warning device (optical or acoustic)
X7.3-X7.4
8.3 Voltage supply for the heating system
–
A separate power circuit must be provided in the
Boiler room for the heating system.
–
Connection: 400 V AC, 50 Hz, 16 A, 3P+N+PE
–
Connect the boiler with the plug CEE 5 x 16 A.
–
Use a heat-resistant PVC or silicone cable with 5-
pin min. 2.5 mm² as the supply cable.
–
Connect the two parts (burner and heat exchan-
ger) to the potential equalisation conductor
1
.
–
From this connection, connect the boiler to
the potential equalisation rail of the house
installation, conductor cross-section min. 10
mm².
Fig. 2-42: Connect potential equalisation
Operation manual
maximus
27