Bedienungsanleitung Dimplex LI 24TES (Seite 30 von 76) (Deutsch, Englisch, Französisch)

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English LI 20TES - LI 28TES

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 electric supply cable for the output section of the heat

pump (up to 4-core) is 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).

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).

When connecting the device, ensure that the incoming

supply has a clockwise rotating field L1; L2; L3.

ATTENTION!

Ensure that there is a clockwise rotating field: With incorrect

wiring the starting of the heat pump is prevented. A

corresponding warning is indicated on the display of the heat

pump manager (adjust wiring).

For detailed information, refer to the circuit diagrams in the

appendix.

2) The three-core electic supply cable for the heat pump

manager (heating controller N1) is fed into the heat pump.

The correct control voltage must be ensured according to

the type plate. 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 contactor or be connected to the household

current, as important protection functions may otherwise

be lost during a utility block.

3) The utility blocking contactor (K22) with 3 main contacts

(1/3/5 // 2/4/6) and an auxiliary contact (NO contact 13/

14) should be dimensioned according to the heat pump

output and must be supplied by the customer.

The NO contact of the utility blocking contactor (13/14) is

looped from terminal strip X3/G to connector terminal N1-

J5/ID3. CAUTION! Extra-low voltage!

4) The contactor (K21) for the flange heater (E9) in the hot

water cylinder should be dimensioned according 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-J16/NO10.

5) The contactors mentioned above in points 3 and 4 are

installed in the electrical distribution system. Mains cables

for the installed heaters must be laid and secured in

accordance with the valid standards and regulations.

6) All installed electric cables must have permanent wiring.

7) The heat circulating pump (M13) is activated via the con-

tact N1-J13/NO5. The connection points for the pump are

X2/M13 and X2/N. When using pumps where the switch-

ing capacity exceeds the output, a coupling relay must be

interposed.

8) The auxiliary circulating pump (M16) is activated via the

contact N1-J16/NO9. The connection points for the pump

are X2/M16 and X2/N. A coupling relay is already

integrated in this output.

9) The domestic hot water circulating pump (M18) is acti-

vated via the contact N1-J18/NO6. The connection points

for the pump are X2/M18 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 air-to-water heat

pumps for indoor installation.

The connection to the HPM is at terminals 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. A coupling relay is therefore installed or must be in-

stalled between the output of the heat pump manager and the

electronically regulated circulating pump. This is not necessary

if the maximum permissible operating current of the heat pump

manager of 2 A and the maximum permissible starting current

of the heat pump manager of 12 A are not exceeded by the

electronically regulated circulating pump or a relevant approval

has been issued by the pump manufacturer.

ATTENTION!

It is not permitted to connect more than one electronically

regulated circulating pump via a relay output.

Dimplex LI 24TES Seite 30

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