1. If the plastic knobs are twisted, try to remove them and use such a clever key to vent the radiators fits perfectly in most models
2. If your model on the left side does not have such a black knob, check if there is a stump on the right side where you can insert a flat screwdriver and open the valve. Some installers install release valves on the system.
3.If the valve is hard (that is, you have to put a lot of force into it), try to move right left so it has to release it in the end, it is important because at least in the WH1B models the release valve is defective and if we do it so-called on HAMA, maybe later let it pass and then the safety valve will make a swimming pool in the bathroom
4. The best pressure is 1 bar (when idle)
5. If someone would like to drain excess water, the method is simple, i.e.
a) turn off all valves except for gas and the second one on the left because it is the DHW outlet
b) turn on hot water (it should not run)
c) unscrew the water release valve and now the magic is flowing from the tap water, thus draining the excess water from the central heating system.
d) close the water admission valve
e) unscrew the valves and look at the water that flows from the tap should be cloudy, brown or black, i.e. we rinsed the system a bit by the way
.
f) check whether the vent in the boiler is open or not
g) fire up the boiler
h) after some time, the highest radiator should be vented
2. If your model on the left side does not have such a black knob, check if there is a stump on the right side where you can insert a flat screwdriver and open the valve. Some installers install release valves on the system.
3.If the valve is hard (that is, you have to put a lot of force into it), try to move right left so it has to release it in the end, it is important because at least in the WH1B models the release valve is defective and if we do it so-called on HAMA, maybe later let it pass and then the safety valve will make a swimming pool in the bathroom
4. The best pressure is 1 bar (when idle)
5. If someone would like to drain excess water, the method is simple, i.e.
a) turn off all valves except for gas and the second one on the left because it is the DHW outlet
b) turn on hot water (it should not run)
c) unscrew the water release valve and now the magic is flowing from the tap water, thus draining the excess water from the central heating system.
d) close the water admission valve
e) unscrew the valves and look at the water that flows from the tap should be cloudy, brown or black, i.e. we rinsed the system a bit by the way
.f) check whether the vent in the boiler is open or not
g) fire up the boiler
h) after some time, the highest radiator should be vented
