Manual Dimplex WI 180TU (page 24 of 60) (English, German, French)

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English WI 180TU

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 X2/K20.

5) The contactor (K21) for the flange heater (E9) in the do-

mestic hot water cylinder should be dimensioned accord-

ing to the radiator output and must be supplied by the cus-

tomer. It is controlled (230 V AC) by the heat pump

manager via terminals X2/N and X2/K21.

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

installed in the electrical distribution system.

7) All installed electric cables must have permanent wiring.

8) 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.

9) 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 inte-

grated in this output.

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

vated via the contact N1-J13/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.

11) The brine or well pump (M11) is activated via the contact

N1-J12/NO3. The connection points for the pump are X2/

M11 and X2/N. A coupling relay is already integrated in this

output.

12) The return sensor (R2) is integrated in the heat pumps for

indoor installation.

The heat pump manager is connected via the following ter-

minals: X3/GND and X3/U2.

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

and X3/U1.

14) The domestic hot water sensor (R3) is included with the

domestic hot water cylinder and is connected to terminals

GND and X3/U3.

7.5.3 Connection of electronically

regulated circulating pumps

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.

CAUTION!

It is not permitted to connect more than one electronically

regulated circulating pump via a relay output.

8 Commissioning

8.1 General Information

To ensure that commissioning is performed correctly, it should

only be carried out by an after-sales service technician author-

ised by the manufacturer. This may be a condition for an addi-

tional guarantee (see "Warranty service").

8.2 Preparation

The following items must be checked prior to commissioning:

All of the heat pump connections must be installed as de-

scribed in chapter 7.

The heat source system and the heating circuit must have

been filled and checked.

In the well water and heating circuits all valves that might

im-pair the proper flow must be open.

The heat pump manager must be adapted to the heating

system in accordance with the controller's operating in-

structions.

The hydraulic network must be flushed correctly before in-

stalling the heat pump. This includes the supply line to the

heat pump. Only when flushing is complete can the heat

pump be hydraulically integrated.

The dirt traps present as standard or included for assembly

must be inspected between 4 and 8 weeks after the heat

pump is commissioned or changes made to the heating

system and cleaned if necessary. Further maintenance in-

tervals must be scheduled depending on the level of soil-

ing, which must be defined and carried out by a suitably

qualified person.

Special notes for the integration of heat pumps in

existing systems (renovations):

The existing heat distribution network (pipe materials, connec-

tion types, etc.) and the existing heating systems (e.g. radiators,

underfloor heating, etc.) can impact the quality of the water in

existing systems. Particularly when welded steel pipes or pipes

that are not oxygen diffusion-proof are used, deposits, scaling,

silting or similar may be present that can cause damage in the

heat pump system. This can result in a total failure of the heat

pump The following measures must be observed to avoid this:

Compliance with the water properties and water quality

Flushing of the hydraulic system

Maintenance interval of the dirt traps

If silting or ferromagnetic particles are to be expected in

the hydraulic network, dirt separators or magnetite separa-

tors must be installed on-site before the medium enters

the heat pump. The maintenance intervals must be defined

by a suitably qualified person.

8.3 Commissioning procedure

The heat pump is commissioned via the heat pump manager.

CAUTION!

Start-up must be performed in accordance with the

installation and operating instructions of the heat pump

manager.

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Dimplex WI 180TU Manual

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