Manual Dimplex SIK 8TES (page 28 of 72) (English, German, French)

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English SIK 6TES - SIK 14TES

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. 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 supply electric 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 heat pump operating instructions

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 X3/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 X2/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 X2/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 heater must be laid and secured in accord-

ance with the valid standards and regulations.

7) All installed electric cables must have permanent wiring.

8) 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.

9) 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.

10) The return sensor (R2) is integrated into heat pumps for in-

door installation.

The heat pump manager is connected via the following ter-

minals: X3/GND and N1-J2/U2.

11) The external sensor (R1) is connected to terminals X3/GND

and N1-J2/U1.

12) 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.

7.5.3 Connecting an electronically

regulated circulating pump

Electronically regulated circulating pumps have high starting

currents, which may shorten the service life of the heat pump

manager. For this reason, a coupling relay is installed or must be

installed between the output of the heat pump manager and

the electronically regulated circulating pump. This is not neces-

sary if the permissible operating current of 2 A and a maximum

starting current of 12 A are not exceeded in the electronically

regulated circulating pump or if express approval has been is-

sued by the pump manufacturer.

ATTENTION!

It is not permitted to connect more than one electronically

regulated circulating pump via a relay output.

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