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by kevarch
Sun Nov 30, 2008 6:12 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: competent person
Replies: 5
Views: 2721

competent person

thanks for the replies. i'm not intending to do any of the work myself, i just thought it was an ambiguous phrase and wanted to clear it up before engaging any one to work on it.
by kevarch
Fri Nov 28, 2008 12:34 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: competent person
Replies: 5
Views: 2721

competent person

hi
in the servicing section of my glow-worm combi instruction book it keeps mentioning that work must be carried out by a 'competent person'. Does anyone know how and by whom a 'competent person' is defined?
many thanks.
by kevarch
Tue Oct 28, 2008 8:36 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: hot watertemp. with combis
Replies: 2
Views: 2471

yes htg, makes perfect sense- thanks very much
by kevarch
Mon Oct 27, 2008 11:23 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: hot watertemp. with combis
Replies: 2
Views: 2471

hot watertemp. with combis

hi
i have recently had a Glow worm combi fitted. I have the water set to a fairly modest temperature (you can put your hand under it) but when the heating is on the hot water comes through seriously hot. Is this normal and if not does any one have suggestions what is happening?
Many thanks.
by kevarch
Fri Sep 05, 2008 3:15 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: One Pipe Central Heating System
Replies: 4
Views: 11797

one pipe central heating system

make sure the radiator valves are of the full flow type. standard valves will not heat the radiators to anything like their full potential
by kevarch
Wed May 28, 2008 9:18 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: interlock info needed
Replies: 2
Views: 2926

thanks for the reply sparx. very helpful.
kevarch
by kevarch
Tue May 27, 2008 4:50 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: interlock info needed
Replies: 2
Views: 2926

interlock info needed

hi
can anyone explain to me what a boiler interlock is, how it works, when they are required and how do i check if i have one?
thanks
by kevarch
Thu Apr 10, 2008 6:16 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: pipe sizes
Replies: 5
Views: 3561

the system was flushed and inhibitor added
this one pipe system has given me nothing but trouble since the new boiler was installed. i think eventually i will have to change to a 2 pipe system.
thanks again
by kevarch
Thu Apr 10, 2008 12:28 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: pipe sizes
Replies: 5
Views: 3561

forgot to say in last post
the old rads and original pipework have been left in
by kevarch
Thu Apr 10, 2008 10:26 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: pipe sizes
Replies: 5
Views: 3561

thanks for the reply htg sorry if i didn't make things clear. the 28 mm pipe was part of the old system and it ran between the backboiler and the hot water cylinder which have both been removed and a new combi installed. unfortunately it is a one pipe system (which the installer didn't tell me about...
by kevarch
Wed Apr 09, 2008 12:15 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: pipe sizes
Replies: 5
Views: 3561

pipe sizes

i recently had an old back boiler replaced by a combi. there was a 28mm pipe between the backboiler and the hot water cylinder and the pipes from the cylinder to the rads 15mm when the combi was installed the plumber left the 28mm pipe in the middle of the system and reduced it at both ends to 15mm ...
by kevarch
Fri Mar 07, 2008 11:48 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: HELP !! Should I change a one pipe heating system ????????
Replies: 4
Views: 33878

further to my previous reply click on the link below for a basic explanation of one and two pipe systems

https://www.diydoctor.org.uk/projects/ce ... ystems.htm
by kevarch
Fri Mar 07, 2008 11:37 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: HELP !! Should I change a one pipe heating system ????????
Replies: 4
Views: 33878

a one pipe system is very inefficient and costly to run especially in large houses. they are most definitely not suited to a use with a combi boiler whatever a plumber might tell you. in my experience most plumbers don't have a clue about one pipe systems. first of all be sure that you have a one pi...
by kevarch
Mon Feb 11, 2008 10:13 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: trvs on 1 pipesystem
Replies: 4
Views: 3143

alda thanks again for your reply the rads did heat up on the previous system so i will take one off and check for sludge and if it is clear i'll try removing the head on one of the trvs. the installer has what i would call a'casual' approach to his aftercare so i am trying to find out the exact prob...
by kevarch
Sun Feb 10, 2008 11:43 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: trvs on 1 pipesystem
Replies: 4
Views: 3143

Alda Many thanks for your reply. I don't think the rads are sludged up as i didn't have this problem with the old system (back boiler) and the installer drained the system and pumped water round until the water ran clear. Some of the trvs are fitted to the return but i didn't think this mattered wit...
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