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by johnb
Mon Sep 10, 2007 9:17 pm
Forum: Plumbing Forum
Topic: Immersion tank too small - double tank needed?
Replies: 2
Views: 3485

HI MICK IF YOU CANT GET A TALLER TANK IN ANY OTHER PART OF ROOF YOU CAN GET A HORZONTAL TANK FROM MOST TANK COMPANIES BUT YOU PAY A LOT MORE IS THERE NO OTHER PLACE FOR TANK OR ARE YOU GOVERNED BY COLD WATER TANK IF SO YOU COULD CONSIDER A NON VENTED MAINS CYLINDER THESE ARE £600-£800 BUT ARE VERY...
by johnb
Mon Sep 10, 2007 8:15 pm
Forum: Plumbing Forum
Topic: Confused DIY ER
Replies: 1
Views: 2836

hi mikeloker the two pipes on side of tank are the flow /return to boiler the cold from the top tank is i think the hot supply down to floor the thermostat on side of cylinder is connected to boiler and controls the h/w temp, you need to drain the central heating [ turn boiler of first]then extend p...
by johnb
Sat Aug 25, 2007 1:37 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Drain and refill old style CH system with pressure vessel
Replies: 1
Views: 3085

hi neal drain system enough to allow removal of pressure vessel then fit equivalent size or larger [marked in litres] on the side fairly simple then vent any obvious vents you can see
by johnb
Sat Aug 25, 2007 1:05 pm
Forum: Plumbing Forum
Topic: changing my bath and sink taps for new ones
Replies: 1
Views: 3843

hi veronica if you can get identical taps then it would be easier alternatively get flexible connectors and cut pipes lower down you will need hacksaw [metal] £1.00 long tap spanner £6-15.00 maybe something to hold taps,, 2 spanners 0 to 1 1/4 inch, say £10 file £1 [metal] taps can be a barstewa...
by johnb
Sat Aug 25, 2007 12:47 pm
Forum: Plumbing Forum
Topic: Immersion heater poor pressure
Replies: 3
Views: 13734

hi bat if you use any pump the header tank will run out of water very quickly you need a mains pressure unvented cylinder £600-800 this will give mains pressure h/water all the best john
by johnb
Sat Aug 25, 2007 12:39 pm
Forum: Plumbing Forum
Topic: Anti-Gravity Loops Meaning
Replies: 1
Views: 18055

hi cookie anti gravity loops are just that. they prevent hot water gravitating upwards when no pump is on they should have a vent as good practice , I'm not sure what you mean by pressurization unit , all the best john
by johnb
Thu Aug 16, 2007 6:08 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Replace external expansion vessel
Replies: 3
Views: 5010

hi kinstowan if you have pressure drop on boiler then you have a leak in the system or pressure vessel, adding another p/vessel in addition to existing should not be needed if the system has worked in the past. check existing p/vessel is not full of water on the gas side it has schrader valve on gas...
by johnb
Thu Aug 16, 2007 5:53 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Permanently Removing a Radiator
Replies: 2
Views: 8696

hi tonnee just cap them off no problem but check system pressure afterwards all the best john
by johnb
Thu Aug 16, 2007 5:44 pm
Forum: Plumbing Forum
Topic: Low pressure
Replies: 3
Views: 3695

hi saintmackem the bath pipes should be 22mm but under some circumstances will work on 15mm cant really tell from info given all the best john
by johnb
Thu Aug 16, 2007 5:38 pm
Forum: Plumbing Forum
Topic: Total plumbing confusion - please help!
Replies: 3
Views: 3816

hi helen two plumbers have said cylinder connections are wrong can you not just put this right with one of your plumbers as for pumps in roofs they should not be there for many reasons and two pumps is twice the problems sounds like megaflow is good idea as alternative to altering pipework plus two ...
by johnb
Sun Aug 12, 2007 12:05 am
Forum: Plumbing Forum
Topic: Flexible Tap Connectors leaking
Replies: 3
Views: 10780

hi isuui the flexi you show does not have rubber washer it is designed for 15mm copper tube with olive it is a compression fitting and does not need ptfe tape are you sure this the fitting you used from screwfix. all the best john
by johnb
Sat Aug 11, 2007 11:53 pm
Forum: Plumbing Forum
Topic: Total plumbing confusion - please help!
Replies: 3
Views: 3816

hi helen h/water is fed from tank in roof therefor h/water pressure in upstairs bathroom is low compared to ground floor if this is your problem a pressurized h/w cylinder will solve it as long as you have good c/water pressure but beware these cylinders are larger than normal and very efficient ,to...
by johnb
Sat Aug 11, 2007 11:37 pm
Forum: Plumbing Forum
Topic: Header tank overflow
Replies: 3
Views: 5374

hi bobby if you are absolutely sure the ballvalve is not leaking check the cold water storage tank [the large tank]if the water level is higher than the expansion tank [small tank] suspect the coil in h/water cylinder is leaking [new cylinder]. there are many reasons for water to back up the expansi...
by johnb
Sat Aug 11, 2007 11:09 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: replacing coal burner with log burner
Replies: 3
Views: 5986

hi olivia jondeau is dead on right, don't risk it if you later sell the property and owners decide to use the fire on a more regular basis it could come back and bite you, keep as a coal burner or line it basically all the best john
by johnb
Sat Aug 11, 2007 9:34 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: underfloor heating problem
Replies: 1
Views: 3066

hi jazzi sounds like condensation from floor which may be damp for reasons unknown you dont say what floor is made from your operation of system should be ok all the best john
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