Installation manual

Coopra Advanced Heating Technologies Installation manual 40 EN
16
CHAPTER 4. COMMISSIONING
4.1. Electrical connection 230 VAC
• If the boiler is provided with a supply cord and a plug the
appliance must be positioned so that the plug is
accessible.
• If the boiler is not provided with a supply cord without a
plug the supply must have a contact separation of at least
3 mm in all poles.
If the supply cord is damaged, it must be replaced by the
service agent or similarly person in order to avoid a hazard.
4.2. Main switch
To power up the appliance
please switch the main switch
on.
If the display of the unit gives
the status code ‘U’ (alternately
with an arbitrary other code),
this means the live and neutral
connections are reversed. Isolate the supply and reverse the
connections.
4.3. Filling
During filling with water, 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. If the unit is
not yet filled with water, the display shows a flashing ‘P’. The
two numbers on the display give the water pressure.
Open the tap to fill the system with water.
When the water pressure is sufficient (> 1.3 bar), the flashing
‘P’ disappears from the display.
Close, after filling, the filling tap again.
4.4. Reading the water pressure
It is possible to read the water pressure directly from the
display. To do this, press the + button of the display for a
minimum of 5 seconds.
The unit switches out of the menu back to normal operation:
• automatically after about 5 minutes;
• or if you press the - button of the display shortly.
4.5. Venting
After filling, the heating installation must be vented.
Proceed as follows:
Follow the instructions from the manufacturer/installer for the
venting of possible other elements of the heating installation,
such as underfloor heating.
Fully open all radiator taps.
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.
4.6. Chimney sweeper function
The chimney sweeper function has priority over the central
heating and HWS regulation.
The chimney sweeper function is
activated by simultaneously
pressing the "+ and the –
buttons" of the display in for
longer than 5 seconds.
The ionisation current can be read in microamperes in the two
right segments.
The capacity that is immediately released is the maximum
central heating capacity.
Press the "- button" to go
to low load.
Press the "+ button" to
switch back to the preset full
load capacity.
4.7. Gas / Air Ratio
(1). Venturi screw – Full load adjustment
Turn the venturi screw anti-clockwise to increase
the CO
2
value, clockwise to decrease it
.
(2). Gas control screw – Low load adjustment
Turn the screw anti-clockwise to decrease the CO
2
value on
low load, clockwise to increase
it.
(3). Cover screw