Part 10 - Lighting the appliance / First start-up
Vent
Warning
Be careful when venting. The water can be hot. Use a cloth to collect spilled water.
Make sure that the system is properly vented. This will avoid noise and comfort problems. The CH pump
has an automatic vent and does not need venting.
To vent the system sufficiently, both the automatic air vent cycle of the appliance and separate venting of
the radiators must be performed using the following three steps.
Step 1: Automatic air vent cycle. To start the automatic air vent cycle of the appliance in order to vent the
system:
a) Take the plug out of the wall socket and put it back in. The automatic air vent cycle starts.
After approximately 6 minutes the air vent cycle is finished. Double check proper venting of the heat exchanger
via the manual vent on the appliance (E, figure 1.2):
b) Open the manual vent on the appliance using a turning movement.
c) Close the vent as soon as all air has been vented from the heat exchanger (as soon as water
comes out of it).
To be sure all air is purged out of the total system subsequently vent the radiators in the system separately in
step 2.
Step 2: Vent the radiators per floor from the bottom of the building going up. To vent the radiators use
the following steps:
a) Open all radiator valves in the house.
b) Set the room thermostat to the maximum position for 30 minutes.
c) Set the room thermostat to the minimum position.
d) After 3 minutes, take the plug out off the wall socket.
Subsequently vent the radiators:
e) Open the vent valve.
f) Let the air escape through the vent valve.
g) Close the vent valve as soon as water comes out.
Step 3: Repeat the automatic air vent cycle as described in step 1.
Warning
Always vent the system after installation or maintenance activities on the CH system!
Caution
In case an air handler is installed in the CH system, installation of a secondary air vent between the air
handler and the appliance is strongly recommended.
Notice
Check the water pressure in the appliance after venting.
Refill the system when the water pressure is below 1 bar (14,5 psi).
57
To Next Page
Loading...
