Instructions / Assembly

26 | Accelera® 220-300 E www.stiebel-eltron-usa.com
INSTALLATION
Installation
11.4.3 Connection with external signal transmitter
The appliance can be connected to an external signal in addition
to the standard connection. Two wires with a 240 V potential must
be connected to terminals X3/2 & X3/1. The X3 connection does
not carry a significant load, and only provides an on/off signal to
the appliance.
When this signal is active, the appliance will operate to satisfy
the secondary setpoint instead of the primary. See 5.2.5, “Set
temperature2”, pg. 14 for more information.
Following activation of the external signal (the external signal is
present for at least one minute), set temperature 2 activates for
at least 20 minutes.
GND
L
L
GRN
BK 1
BK 2
N
L
11.4.4 Connection with off-peak and external signal
transmitter
The appliance can be operated in a mode combining the external
signal and the off-peak power connection. This mode would re-
quire the two load connections on the X0 terminal block and the
potential-free signal on the X3 terminal block.
GND
L
L
GRN
BK 1
BK 2
L
L
N
L
Interruptible
power supply
Note
f Never wire up terminal X3/1.