Well, my plan to add new inhibitor to the F and E tank of our conventional heating system didn't quite go as I expected.
I tied up the tank ball valve, drained the system to an outside gully via the drain valve on a radiator by the back door (we live in a bungalow) closed the radiator drain valve, added inhibitor to the F and E and refilled the tank and system. I bled the rads (none of which had any air in, perhaps a warning sign) turned on the heating and the boiler started gurgling like there was no tomorrow. The pump was making unusual noises too, and eventually the boiler locked off with a low water pressure fault (F22 on a Glowworm Flexicom).
I was at a loss to work out what I'd done wrong, but my missus came to the rescue, locating a clip on Youtube which described how to bleed air from the system via a drain cock just below the pump. The subsequent removal of air has brought the boiler back to life, although its still gurgling.
I noticed in the Wiki a reference to a lever on the pump that you can use to switch to "manual" when bleeding. The only lever I can see ( by using a mirror) is on the body of the pump on the hidden side next to the cylinder, and it seems to have three settings marked with one, two and three horizontal lines. Would that be the relevant switch, and which setting is manual? Its on the setting with three lines at the moment.
What did I do wrong to introduce so much air into the system?
I tied up the tank ball valve, drained the system to an outside gully via the drain valve on a radiator by the back door (we live in a bungalow) closed the radiator drain valve, added inhibitor to the F and E and refilled the tank and system. I bled the rads (none of which had any air in, perhaps a warning sign) turned on the heating and the boiler started gurgling like there was no tomorrow. The pump was making unusual noises too, and eventually the boiler locked off with a low water pressure fault (F22 on a Glowworm Flexicom).
I was at a loss to work out what I'd done wrong, but my missus came to the rescue, locating a clip on Youtube which described how to bleed air from the system via a drain cock just below the pump. The subsequent removal of air has brought the boiler back to life, although its still gurgling.
I noticed in the Wiki a reference to a lever on the pump that you can use to switch to "manual" when bleeding. The only lever I can see ( by using a mirror) is on the body of the pump on the hidden side next to the cylinder, and it seems to have three settings marked with one, two and three horizontal lines. Would that be the relevant switch, and which setting is manual? Its on the setting with three lines at the moment.
What did I do wrong to introduce so much air into the system?