Manual Dimplex SIH 20TE (page 25 of 56) (English, German, French)

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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.

The manual says there is a modbus and ethernet option. Is there a list of modbus registers available? Submitted on 14-1-2022 at 12:40
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