Connection Diagrams - STIEBEL ELTRON ETW 120 Bedienungs Und Installationsanleitung Handbuch

INsTAllATION
sPEcIfIcATION

15.4 Connection diagrams

Optional connections
Connection diagram for integral room thermostats RTI-E3/RTI-EP2
TA
X3 + - LE` LH
DC
Charge control system
LV system
Charge control system A1/A2
1/N ~ 230 V
L1/L2/L3
(if necessary via heating contactor)
N/PE ~ 400 V
Connection diagram for wall mounted room thermostats RTA-S/RTNZ-S
+ - TA LE` LH
X3
Charge control system
LV system
Charge control system A1/A2
1/N ~ 230 V
RTA-S
(RTNZ-S (with
switch for booster heater))
L1/L2/L3
(if necessary via charge
contactor)
N/PE ~ 400 V
Connection diagram for single phase connection (max. 2 kW)
Connection diagram for "old-new" storage heater replacement with wall
mounted room thermostat and no daytime power supply
Charge control system
Room temperature
controller
L1/L2/L3
(if necessary via charge contactor)
N/PE ~ 400 V
42 |ETW 120, 180, 240, 300, 360, 420, 480 electronic
* *
X2
(N )
L-
A1 A2 L N
N N N N N L
LH` LE
SH
Z1 Z2
* Jumpers (L)-(L-SH) and (N)-(N)
Remove for control without
heating contactor
AC
Charge control system
230 V system
* *
X2
(N )
L-
L
A1 A2 N
LH` LE N N N N N L
SH
Z1 Z2
* Jumpers (L)-(L-SH) and (N)-(N)
Remove for control without
heating contactor AC
Charge control
system
230 V system
(N )
A1 A2 L N
Z1 Z2
(N )
A1 A2 L N
Z1 Z2
"Single wire control"
X1
LE 3 2 1 L3 L2 L1
X1
LE 3 2 1 L3 L2 L1
X1
LE 3 2 1 L3 L2 L1
X1 For this, ensure the relevant
(N ) (N )
(N )
room thermostat and weather-
LE
3 2 1 L3 L2 L1
compensated charge control system
are connected to the same RCD as
the load module.
If several RCDs are installed, route
the N of thermal relay K1 to the N of
the load module, and wire 3 from
plug-in connection X10 from L to
L1 (see wiring diagram in chapter
"Specification").
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