50
3.
For the Electrician
3.1.3 Electrical connection for Power supply 110 V AC, external control,
changeover unit, suction turbine
3.1.3.1 Power supply 110 V AC
– We recommend using fine-wire PVC sheathed cables, e.g. 3 x AWG 15 nominal cross-section.
Cable duct
Low-voltage
(110–230 V AC)
Cable duct
Extra-low
voltage
(sensor)
Fig. 113
Fig. 114 Cable ducts - rear view
Power supply
110 V AC
Suction turbine
110 V AC
changeover unit
12 V DC
changeover unit 230 V AC
external control
3.1.3.2 Operation with external control, with buffer only
a) Heating requirement (setpoint specification) with 2-point controller
The 2-point controller switches the burner ON/OFF with a potential-free contact via the „external heating re-
quirement“ interface of the BioWIN XL.
b) Heating requirement (setpoint specification) with analogue interface
The controller passes the external boiler temperature setpoint via the analogue 0–10 V interface.
InfoWIN
PLUS
cable
Information!
Be sure to note the separate wiring of the extra-low voltage line (sensor) and low-voltage line
(110-120 V A
C)! – Fig. 93.