STIEBEL ELTRON SHP-A 220 Plus - Page 20

INSTALLATION
Installation
20 | SHP-A 220-300 Plus www.stiebel-eltron.com
10.4.3 Connection options: Operation with external signal
transmitter
!
Material losses
See "Permissible voltage range for external signal trans-
mitters" in the "Specification/data table" chapter.
Note
The appliance has a second, higher set temperature
which is selected at the factory. This is activated in the
event of an external switching signal. Set temperature2
is higher ranking than the standard set temperature while
there is an external switching signal.
An external signal transmitter for switching a separate set DHW
temperature (set temperature2) can be connected to terminal
X3/1-2. In the delivered condition, terminal X3/1-2 is not assigned.
If this terminal is connected at the voltage stated in the specifica-
tion (see “Permissible voltage range, external signal transmitter”)
(L to X3/1, N to X3/2), the appliance enables set temperature2.
Following one-off activation (signal present for at least 1minute),
set temperature2 applies for at least 20minutes. Set tempera-
ture2 is ranked higher than set temperature1. When the relevant
DHW set temperature has been reached, the compressor switches
off and remains off for a minimum idle time of 20minutes.
The following diagram illustrates the connections by means of a
sample signal sequence from an external signal transmitter.
Example:
- Water temperature = 55 °C
- Set temperature 1 = 50 °C
- Set temperature 2 = 65 °C
A
1
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 t [min]
B
1
1
0 2
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 t [min]
D0000034613
A External signal
B Compressor
1 20 min. minimum runtime, set temperature2
2 20 min. minimum compressor idle time
 Remove the appliance cover (see chapter “Cleaning and
maintenance/ Removing the appliance cover”).
D0000056083
1
2
1 Strain relief
2 Terminal X3
 Prepare the electric cables in such a way that each cable ter-
minates with a wire ferrule.
 Push the cables through one of the cable entries in the appli-
ance casing.
 Route leads through the strain relief.
 Connect the cables to X3.
Example 1 : Power supply utility signal with its own phase
X0
2
L
L
N
N
PE
PE
L
N
PE
GNYE
BU
BN
1
1
2
X3
2
3
3
1
1
2
L1 / L2 / L3
N
EVU
D0000059154
EVU Power supply utility
BN Brown
BU Blue
GNYE Green/yellow
Example 2 : Photovoltaic signal via on-site relay and phase
routed outside the appliance
Note
The relay in the inverter must meet the following re-
quirements:
- Potential-free relay (240VAC / 24VDC, 1A) with
N/O contact
- Adherence to safety regulations and standards for
safety extra low voltage
- The switching output must be programmed so that
the relay closes or opens if certain limits are exceed-
ed or undershot (inverter output level).
If necessary, check with the inverter manufacturer wheth-
er the product meets the stated criteria.
X0
2
L
L
N
N
PE
PE
L
N
PE
GNYE
BU
BN
1
1
2
1
X3
2
3
3
1
1
2
D0000059155
1 Inverter (floating contact)
BN Brown
BU Blue
GNYE Green/yellow