Manual Dimplex SRX 160C (page 6 of 36) (English, German, Dutch, Danish, French, Polish, Turkish, Norwegian, Finnish)

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Hydraulic connection

To ensure a sufficient water flow rate through the fan convec-

tors, observe the following points:

- The devices are not suitable for installation in single-pipe

systems.

- The nominal width of the connection pipe must have a

minimum diameter of 15 mm.

- If the devices are installed in a heating system with various

heat distribution systems (e.g. underfloor heating), a sepa-

rate circuit is required to guarantee a sufficient water flow

rate.

- For optimum operation (heat output) of the fan convectors,

a hydraulic balance is required on the heating system.

Fig. 5 shows the various hydraulic connection options on the

device. The recommended flow and return connections are

shown in fig. 5 and fig. 4. The heating pipes can be laid in the

floor or in the wall. The device is supplied with two copper pipes

with a diameter of 15 mm that are fitted on the heat exchanger

at the factory.

Before and during filling of the heating system, all pipe connec-

tions must be checked for leaks. During filling, the bleeder valve

(see fig. 4) must be open such that air can escape from the de-

vice. If necessary, bleed again following commissioning (circulat-

ing pump running).

Connect the condensate pipe supplied to the outlet nozzle and

route to a suitable outlet with a gradient of at least 5°.

Electrical connection

WARNING – The device must be grounded!

WARNING – Phase conductor (brown) and neutral conductor

(blue) must not be swapped as this may cause malfunctions.

The electrical connection should have a supply voltage of ~230-

240V, 50 Hz.

The device must be installed by a qualified electrician in compli-

ance with the existing standards and local installation guide-

lines.

Before performing installation, ensure that the power supply is

switched off.

The device is equipped with a flexible 1 m connection cable (4 x

0.75 mm²), which can be used to connect the heater directly to

the power supply via a suitable wall socket.

In the electrical supply line, fit a circuit breaker for each pole

with a contact opening width of at least 3 mm. Automatic fuses

are also permitted as separators. Automatic fuses should have a

delayed tripping characteristic.

Conductor configuration of the connection cable:

Brown: 'L' – supply voltage phase conductor

Blue: 'N' – supply voltage neutral conductor

Green/yellow: 'PE' – grounding conductor

Black: control conductor (temperature reduction; on/off)

For circuit diagram, see fig. 6.1 resp. fig. 6.2.

Control conductor

By activating the control conductor, see fig. 6.1, the set tem-

perature on the device is lowered or raised depending on the

selected mode.

See also "Changing automatically the set temperature"

The temperature change is forwarded to any downstream de-

vices via the control conductor.

If a programming cassette is used, the control signal from the

cassette, which is plugged into the pilot device, is forwarded to

any downstream devices; see fig. 6.2.

The control conductor does not have to be in phase with the

supply connection. If the control conductor is not used, it must

be properly insulated.

WARNING – if you switch over to controlled operation, the

mains voltage is on this conductor!

WARNING – do not ground the control conductor.

When taking out of service, e.g. for maintenance work, ensure

that both the mains supply and the control conductor are dis-

connected from the power supply, because this may result in

external voltage (via a timer contact or pilot device with pro-

gramming cassette).

Final installation

Fit casing cover following completion of installation work. To do

this, screw in the four fixing screws on the underside of the de-

vice, see fig. 2.

Operation

The control panel is shown in fig. 3.

The individual elements have the following meaning:

A – Operating mode button

B – On/off indicator

C – Cooling mode indicator

D – Heating mode indicator

E – Fan level button

F – Low fan level indicator

G – Medium fan level indicator

H – High fan level indicator

J – Thermostat setting wheel

K – Cover for programming cassette slot

Heating mode

Press the button once or several times until the red in-

dicator lights up.

Set the desired room temperature with the setting wheel.

Depending on the current room temperature and the tem-

perature set on the thermostat, the electronics calculate

which fan level (fan speed) to use.

There are 3 possible fan levels. If necessary, the number of pos-

sible fan levels can be reduced. For instance, to limit the fan

levels to a maximum of 2, press the button once or sev-

eral times until the red 2 indicator lights up.

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Dimplex SRX 160C Manual

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