Bedienungsanleitung Coopra TWIN80C (Seite 7 von 8) (Englisch)

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user instructions TWIN80C_EN

Tips

Depending on how much you value optimum comfort and the

lowest possible energy consumption, the following tips can help

you make optimum use of your unit:

To help limit the energy consumption, it is recommended to set

the room thermostat to a lower temperature a few hours before

going to bed.

Turn all radiator taps fully open in the rooms that you want to

heat.

Shut the radiator taps off in the rooms where you do not want

any heating.

Cleaning the unit

Regularly clean the outside of the unit with a soft, damp cloth. It

is not necessary to shut the gas tap off or switch the mains off

for this.

Never use aggressive or flammable cleaning agents.

Take note that the pipes can be at a high temperature.

Holidays

With long-term absence, for example in the holidays, it is

recommended to leave the unit continually switched on. The

reason is that the unit makes a number of checks every 24

hours.

If frost can be excluded, set the room thermostat to a lower

temperature.

If frost cannot be excluded, set the room thermostat to a

temperature of 12°C or higher.

Although the unit has an internal frost protection, this does not

protect the whole installation against freezing.

Brrrr, the central heating is not working

In the unlikely event that the central heating has let you down,

we have some tips for things that you can check and remedly

yourself before an installer.

The central heating boiler is a fairly complicated item that is

fitted with safety devices, which prevent a dangerous situation.

There can be many reasons why the central heating is not

working.

Electricity and gas

Is the connection of the green block in the green socket correct

connected?

Is the main switch on the unit in the right position?

Or is the circuit to which the boiler is connected out of operation

because the fuse has blown or the earth leakage switch has

activated?

Is there an (unusual) interruption in the gas supply? Check by

seeing whether a gas cooker in the kitchen is working. If it is not

working, call the gas company. The gas flow can also be

blocked because the gas filter of the boiler is contaminated; this

is a problem for the service man.

The unit also lets the pump regularly run outside the heating

season to prevent it from sticking. If the mains supply outside is

interrupted several times during the heating season, the pump

can stick. Solution: turn the shaft of the pump a few times by

hand (screwdriver).

Water and air

If the water pressure in the installation falls below a minimum

level, the burner will be off.

Solution: Top up with water.

It is possible to read the water pressure directly from the display.

Reading: Press the + button in for a minimum of 5 seconds.

From the menu back to normal operation: Press the - button in

briefly (or automatically after about 5 minutes).

During filling, the unit must be connected to the mains and be

switched on.

Fully open all radiator taps.

Connect the water supply to the filling connection of the

installation.

Open the tap to fill the system with water.

When the water pressure is sufficient (> 1.3 bar), close the filling

tap again.

If there is air in the installation, the boiler can switch on, but the

radiators remain cold.

Follow the instructions from the manufacturer/installer for the

venting of possible other elements of the heating installation,

such as floor heating.

Fully open all radiator taps.

Vent the radiators after the pump is switched off.

Open the air bleed cocks of the radiators one at a time. Use an

air bleed key for this.

As soon as water comes out of the air bleed cock, shut the cock

off again.

If the central heating boiler is at the highest point of the

installation, air can collect in the boiler. This can cause a

malfunction in the boiler. Also vent the internal tap pot (only with

a Combi-unit).

Other causes

There must be heat demand from the room thermostat or other

control, otherwise the boiler will not switch on. Set the

thermostat to demand heat and check whether the boiler

switches on; this can take a minute or so.

If there is little water circulation because too many radiator taps

are closed, the boiler will not function or will function

insufficiently. In this case, open more radiator taps or ask your

installer to fit a bypass valve.

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