Wiring Diagrams - STIEBEL ELTRON WWS 20 Bedienung Und Installation

INSTALLATION
Specification

14.3 Wiring diagrams

Material losses
!
Applying voltage to the switching inputs at the junction
box could destroy the contacts.
f Never apply any voltage to the switching inputs. f
f Always use floating contacts. f
1
2
F1 Switching input for control sensor
F2 Switching input for display sensor (optional)
E2 Switching input for power supply utility shutdown (optional)
E3 Switching input for power supply utility shutdown, set value increase or external fan control (optional)
1 DHW heat pump
2 Junction box
3 Mains power (Domestic electricity meter)
www.stiebel-eltron.com
3
WWS 20 | 61