Coopra Advanced Heating Technologies Installation manual E40C
20
CHAPTER 4. COMMISSIONING
4.1. supply connection
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.
De electrical connection (230 VAC) must have a good
Phase, Zero and Earth. The Earth is absolutely
necessary for the function of the appliance.
If you do not have the required supply connection, in that
case it must be made.
4.2. Mains switch
To power up the appliance the
mains switch, positioned down
under the boiler, must be switched
on and light up.
De-aeration program
After restoration of supply power, both the boiler pump
and 3-way valve are switched several times with the
purpose to move eventual air out of the boiler.
The de-aeration program lasts for 2 minutes.
During de-aeration time the burner is off.
To read the water pressure press the (+) button for at
least 10 seconds
4.3. Burner situation
4.3.1. Burner is on
- When the thermostat is closed (heat demand)
- and when the actual flow temperature is 5°C below the
setpoint
- and with no maximum temperature blocking
- and after 3 minutes anti-reciprocal time, if applicable.
4.3.2. Burner is off
- When the thermostat is open (end of heat demand)
- or when the actual flow temperature is 3°C above the
setpoint (C on status display)
- or with maximum temperature blocking. The actual
temperature is 3°C above the maximum permissible flow-
or return temperature.
4.4. Water pressure
Check the water pressure; top up and de-aerate as
necessary.
If the water pressure in the installation falls below 0,5 bar
the Status display shows a continuous P and the right
hand display shows the actual water pressure in bar.
Solution: Fill the system with domestic water.
The working range of the boiler is between 0,5 and 3,5
bar. With lower and higher water pressures the burner is
off. The boiler is blocked and gives no heat.
Reading water pressure
To read the actual water pressure
press the (+) button for at least 10
seconds.
Press the (-) button briefly to return
to normal mode.
Time-out: Automatic return to normal operation after 3
minutes.
Filling
- Fill the system with domestic
drinking water.
- Fully open all radiator taps.
- Connect the water supply tube to
the filling and draining device in
the central heating system.
- Fill the water supply tube with
water.
- Let the air in the water supply tube escape; because
you want to fill the system with water instead air.
- Connect the fully filled water supply tube to the water
tap.
- Open both water taps with caution and fill the system.
- Advised is a fill pressure between 1,5-2,0 bar.
- Close, after filling, the filling tap and remove the water
supply tube.
- After filling, the installation must be vented.
Venting
Follow instructions of your installer of how to vent the
system elements of the installation.
- Take care all pumps are off.
Running water can move the air
through the system constantly.
- During the venting process you
also may put the appliance mains
switch in the supply cable 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.
- Air in the boiler can cause a malfunction of the boiler.
Vent the boiler, the HWS hot water cylinder or internal
tank of Combi-boiler.
- After venting of the system, the appliance and pumps
must be connected to the mains and be switched on.
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