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by greenhm
Thu Mar 13, 2008 10:00 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Open vent and system boilers
Replies: 2
Views: 11278

Thanks for the explanation htg engineer. What I have is a two pipe central heating system fed by an old 16/22 Potterton Netaheat. The house is a 4 bed - 2 bathroom and the DHW is heated from an Aga via an indirect cylinder. I am having to replace the boiler because I have added 50 sq metres to the g...
by greenhm
Wed Mar 12, 2008 9:46 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Open vent and system boilers
Replies: 2
Views: 11278

Open vent and system boilers

Does anyone know the difference between these two terms? I am replacing my existing heating only boiler with a new one. Currently the plumber is quoting for a heating only boiler to replace it. The central heating pump is in the airing cupboard and the existing hot water system is independent off a ...
by greenhm
Wed Mar 12, 2008 9:40 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Expansion tank overflowing
Replies: 8
Views: 53477

I assume that what you call the expansion tank is the cold water storage tank that supplies the water to the hot water cylinder where it is heater by a heat exchanger off your boiler or an immersion heater? Should the water in the hot water cylinder become too hot it expands and there is an overflow...
by greenhm
Tue May 08, 2007 5:43 pm
Forum: Damp and Damp Proofing Forum
Topic: Creating a vertical DPC instead of taking brick out
Replies: 3
Views: 6318

The outer skin of the wall which will becaome an internal skin of the extension is rustic brick at ground floor level and rendered block at first floor level..

Mal
by greenhm
Thu Apr 05, 2007 1:28 pm
Forum: Damp and Damp Proofing Forum
Topic: Creating a vertical DPC instead of taking brick out
Replies: 3
Views: 6318

Creating a vertical DPC instead of taking brick out

I am building a side extension which abutts an existing outside wall. The corner of the existing house therefore will bridge the cavity and I will have to cut through the brick and insert a physical vertical DPC to stop the rain penetrating across the brick and onto what will become an inside wall. ...
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