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by johnb
Fri Jul 13, 2007 4:31 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Combi or Boiler and Cylinder. Help choosing please
Replies: 3
Views: 5044

hi , check plumbers-1 he has right idea expensive but good more efficient at storage plus h/water backup via emmersion you may get away with smaller boiler get it sized properly. all the best john
by johnb
Fri Jul 13, 2007 4:20 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Draining upstairs central htg rads only in a vented system
Replies: 1
Views: 4649

hi dougie simply drain all the system and add inhibitor when refilling use a good make ie,sentinel fernox etc there is no advantage in part draining however on a 24 year old system it may be time to consider new rads especialy if black sludge is found , all the best john
by johnb
Fri Jul 13, 2007 4:12 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Boiler and radiator installation costs??
Replies: 2
Views: 3908

very reasonable i would charge that in east anglia sounds ok just check there credentials all the best john
by johnb
Fri Jul 13, 2007 3:52 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: What kind on heating system do I have
Replies: 3
Views: 3472

hi its antique by the sounds of it . its a direct system as described there is no coil just connections to the cylinder very inefficient . all the best john
by johnb
Fri Jul 13, 2007 3:21 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: system overheating and will not drain
Replies: 1
Views: 2969

overheat

hi edd this is dangerous the pipe from the small roof tank is almost certainly blocked between tank and next tee piece basically cut out and fix all best john
by johnb
Fri Jul 13, 2007 3:09 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: adding x400
Replies: 5
Views: 4367

boiler sludge

hi if your boiler has been diagnosed with sludge you have to clean the system using sludge remover then neutralizer and then when all is clear add inhibitor and not before, this takes a lot of time to do properly 4/6hrs is common best idea is to have the system jet flushed. as the amount of chemical...
by johnb
Fri Jul 13, 2007 10:42 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: new gas boiler
Replies: 7
Views: 4669

heating system

hi as an engineer of45 years i concur with dr-plumb you need without dought a pressurised h/water cylinder and standard boiler all the best john
by johnb
Fri Jul 13, 2007 10:25 am
Forum: Fillers, Sealants and Adhesives Forum
Topic: wall seal
Replies: 0
Views: 3800

wall seal

hi can you advise me how do i seal an internal red brick wall without colouring or shining which is very dusty many thanks john
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