Install Instructions

46 | Making the electrical connections
Greenstar6 720 806 992 (2013/09)
7.2 Low voltage electrical connections in the Heatronic
boiler control
7.2.1 Open the Heatronic boiler control
▶ Unhook the clip (step 1) and fold the Heatronic down (step 2).
Fig. 41 Fold the Heatronic down
▶ Remove screws (step 1), unhook cable and remove cover (step 2).
Fig. 42 Remove the cover
7.2.2 Connecting the outdoor temperature sensor
▶ Connecting the controls automatically establishes the internal
communications BUS connection ( see installation instructions for
the controls).
▶ Punch out plastic insert.
▶ Connect cable of the outdoor temperature sensor according to
Fig. 43.
▶ Insert cable for the outdoor temperature sensor.
▶ Secure the cable with the strain relief.
Fig. 43 Electrical wiring outdoor temperature sensor
7.2.3 Connecting the DHW tank temperature sensor (only heating
boiler ZBR..-3A)
Wire the DHW tank temperature sensor directly to the appliance
terminals. The sensor is provided with the appliance.
Do not exceed a sensor cable length of 33 feet (10 m).
▶ Punch out plastic insert.
▶ Plug connector into the circuit board.
▶ Insert the cable of the DHW tank temperature sensor.
▶ Secure the cable with the strain relief.
Fig. 44 Electrical connections DHW tank temperature sensor
NOTICE: Small pieces of wire can cause shorts and
damage the electronics.
▶ Always strip cables away from electronics.
6 720 641 933-72.1O
2
1
1
1
1
2
6 720 641 933-86.1O
6 720 641 933-35.1O
A
F
6 720 641 933-73.1O