www.gdts.one
452234.66.77 · FD 9912
EN-9
SIH 20TE
English
7.5 Electrical connection
7.5.1 General
All electrical connection work must be carried out by a trained
electrician or a specialist for the specified tasks in accordance
with the
installation and operating instructions,
country-specific installation regulations (e.g. VDE 0100),
technical connection conditions of the energy suppliers
and supply grid operators (e.g. TAB) and
local conditions.
To ensure that the frost protection function of the heat pump
works properly, the heat pump manager must remain con-
nected to the power supply and the flow must be maintained
through the heat pump at all times.
The switching contacts of the output relay are interference-
suppressed. Therefore, depending on the internal resistance of
the measuring instrument, a voltage can also be measured
when the contacts are open. However, this will be much lower
than the line voltage.
Extra-low voltage is connected to controller terminals N1-J1 to
N1-J11; N1-J24 to N1-J26 and terminal strip X3; X5. If, due to
a wiring error, the line voltage is mistakenly connected to these
terminals, the heat pump manager will be destroyed.
7.5.2 Electrical installation
1) The electric supply cable for the output section of the heat
pump (up to 4-core) are fed from the electricity meter of
the heat pump via the utility blocking contactor (if required)
into the heat pump (see the device information for supply
voltage).
Connection of the mains cable to the control panel of the
heat pump via terminal X1: L1/L2/L3/PE.
ATTENTION!
!!
Ensure the rotary field is clockwise when connecting the
mains cables (if the rotary field is not clockwise, the heat
pump will not work properly, is very loud and may cause
damage to the compressor).
An all-pole disconnecting device with a contact gap of at
least 3 mm (e.g. utility blocking contactor or power contac-
tor) and an all-pole circuit breaker with common tripping
for all external conductors must be installed in the power
supply for the heat pump (tripping current and characteris-
tic in compliance with the device information).
2) The three-core electric supply cable for the heat pump
manager (heating controller N1) is fed into the heat pump .
Connection of the control line to the control panel of the
heat pump via terminal X2: L/N/PE.
The (L/N/PE~230 V, 50 Hz) supply cable for the heat pump
manager must have a constant voltage. For this reason, it
should be tapped upstream from the utility blocking con-
tactor or be connected to the household current, as impor-
tant protection functions could otherwise be lost during a
utility block.
3) The utility blocking contactor (K22) with main contacts
and an auxiliary contact should be dimensioned according
to the heat pump output and must be supplied by the cus-
tomer.
The NO contact of the utility blocking contactor is looped
from terminal strip G/24 V AC to connector terminal J5/
ID3.
CAUTION! Extra-low voltage!
4) The contactor (K20) for the immersion heater (E10) of
mono energy systems (HG2) should be dimensioned ac-
cording to the radiator output and must be supplied by the
customer. It is controlled (230 V AC) by the heat pump
manager via terminals N and N1-J13/NO4.
5) The contactor (K21) for the flange heater (E9) in the hot
water cylinder should be dimensioned according to the ra-
diator output and must be supplied by the customer. It is
controlled (230 V AC) by the heat pump manager via termi-
nals N and N1-J16/NO 10.
6) The contactors mentioned above in points 3, 4 and 5 are
installed in the electrical distribution system. Mains cables
for the installed heaters must be laid and secured in ac-
cordance with the valid standards and regulations.
7) All installed electric cables must have permanent wiring.
8) The heat circulating pump (M13) is connected to N1-J13/
NO5 and X2/N. When using pumps where the switching
capacity exceeds the output, a coupling relay must be in-
terposed.
9) The auxiliary circulating pump (M16) is connected to N1-
J16/NO9 and X2/N. When using pumps where the switch-
ing capacity exceeds the output, a coupling relay must be
interposed.
10) The domestic hot water circulating pump (M18) is con-
nected to N1-J12/NO6 and X2/N. When using pumps
where the switching capacity exceeds the output, a cou-
pling relay must be interposed.
11) The brine or well pump (M11) is activated via the contact
N1-J12/NO3. The connection points for the pump are on
contactor K5:2/4/6. A coupling relay is already integrated
in this output.
12) The return sensor (R2) is integrated into heat pumps for in-
door installation.
The heat pump manager is connected via the following ter-
minals: GND and N1-J2/U2.
13) The external sensor (R1) is connected to terminals GND
and N1-J2/U1.
14) The domestic hot water sensor (R3) is included with the
domestic hot water cylinder and is connected to terminals
X3/ GND and N1-J2/U3.
The power cable must be run through the guide tubes, inserted
into the side of the control box and secured by means of the
strain relief.
