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by tamz
Thu Mar 29, 2007 9:48 pm
Forum: Plumbing Forum
Topic: water cylinder vent pipe
Replies: 3
Views: 13144

Do you mean conventional boiler? A combi is not normally connected to a cylinder. Anyway. The height of the domestic expansion pipe doesn't really matter too much. Just put it as high as you can if you are stuck for height. The expansion volume when the cylinder is heated will be taken up by the sto...
by tamz
Thu Mar 29, 2007 9:06 pm
Forum: Plumbing Forum
Topic: Turning off the hot tap into Megaflow!
Replies: 1
Views: 7925

Hi
If there is no valve next to the megaflow by turning the main cold water stopcock off that will also stop the hot.
by tamz
Thu Mar 29, 2007 8:46 pm
Forum: Plumbing Forum
Topic: OVERFLOW
Replies: 1
Views: 4196

Expansion vessel need recharging if it drips when heated. If the cylinder is a megaflow type with internal expansion, turn the water supply off, drain the taps and turn back on again.
by tamz
Thu Mar 29, 2007 8:41 pm
Forum: Plumbing Forum
Topic: Air in DHW system
Replies: 2
Views: 4584

The problem is caused by the water coming out of the cylinder faster than it is going in thus pulling air down the expansion pipe and through to your taps. If it has started doing this gradually getting worse over time, check the feed inlet at the bottom of the cylinder for a blockage or scale build...
by tamz
Thu Mar 29, 2007 8:20 pm
Forum: Plumbing Forum
Topic: How to connect 1" hose to 15mm internal pipework?
Replies: 3
Views: 12499

Depends on the thread size on the pump. If it is a normal central heating pump the thread is 1 1/2" bsp.
Use a pump valve and a 22 x 15 mm reducer. If you are not surer take the pump to a plumbers merchants and say you want to come off it in 15mm. They will give you the right fittings
by tamz
Thu Mar 29, 2007 8:06 pm
Forum: Plumbing Forum
Topic: How can I test if hot water tank has a leaking coil
Replies: 5
Views: 30110

It is not very likely that the coil will be leaking. Your problem is probably caused by the water level in the expansion tank being set too high. When water heats it expands and the extra volume, on an open system, goes to the "expansion tank" rising the water level. If the water level in ...
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