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Electrical connections
Preparing cables without integral cable grommet
1.
2.
Fig. 22
1. Cut required openings in the cable grommets.
2. Route cables through cable grommets and secure
with cable ties.
Note
■
Strip as little of the insulation as possible, close
to the terminals.
If 2 components are connected to the same ter-
■
minal, press both cores together in a single wire
ferrule.
Overview of electrical connections
Part of heating system
Actuators, sensors and switches.
Connections for fuel supply system to
ZPK PCB of the control unit
Outside temperature sensor
Buffer temperature sensors
Heating circuits, solar circuit, DHW etc.
Electrical connections on the PCBs
Outside temperature sensor connection
Plug
: Outside temperature sensor
!
Fig. 24
Assignment
1
2
(cont.)
Chapter
Commissioning
Overview of electrical connections
Overview of electrical connections
Connection options at the HKK PCB and extension kits via
KM-BUS
Overview of the PCBs
Function
Ai
GND
Applying strain relief
2.
Fig. 23
1. Insert cables with cable grommet into the apertures
in the control unit enclosure.
2. Secure cables with cable ties.
Additional information
Pt1000
—
Installation sequence
1.
Page
49
31
32
37
142
31
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