Neon or no neon on FCU for boiler and hob


Do the regs specify whether a neon is required on the FCU for a boiler, and separately on the feed for a gas hob and extractor unit?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Thu, 29 Jan 2009 06:09:45 -0800 (PST) someone who may be clangers snipped-for-privacy@yahoo.co.uk wrote this:-

They don't specify a neon must be fitted to anything.
Given that the FCU for a boiler is likely to be left on all the time, what is the benefit of a neon? Ditto for a hob and extractor unit.
--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Thu, 29 Jan 2009 14:24:01 +0000, David Hansen wrote:

Nothing (AFAIK) in the regs. You'd use a neon on something that was undesirable to leave switched on and which was not immediately apparent.
--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
David Hansen wrote:

How much power does a neon use when on 24/7, out of interest?
David
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Lobster wrote:

Making a few assumptions such as the strike voltage of the neon is 90v, and has 100k resistor in series and the mains is DC not AC (bear with me!)then the current would be 1.5mA and the power 0.36 watts and this would consume 1 unit of electricity in 2800 hours. But the mains is a sine wave and the neon is only lit when the peak voltage is greater than 90 volts so possibly only on for 2/3rds of the time. Which gets us to over 4000 hours per unit. So depending on your tariff maybe 20 pence per year.
Bob
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.