secondary

Hi guys , planning a job which is comming up shortly , basically need to supply hot water for 3 basins , 2 of which are far enough away that i would say need a secondary return , i have picked out a 15L unvented water heater by hyco {sf15K} , which would do the job nicely but ideally need a...

Hi Guys. Need some Help. Ideal Logic combi 24 CH works but no DHW, the guy told me to use "one shot" which I found to be drain cleaner(91% sulphuric Acid). I have put Sentinel X400 into the heating system and will also use X100. How will I know which is the CH holes and which are the DHW...

Speccing up a luxury flat, 3 bed each with an ensuite property is long and relatively narrow maybe 25m long by 9m wide. Customer wants unvented but that can only be situated at one end of the flat. The en suites are spread evenly along the length of the property. What I'm trying to...

Hi all, I am a homeowner, please accept my apologies if this forum is trade-only or I am asking a question covered elsewhere (I had a good look first). Basically, British Gas came to service the boiler recently in my flat. The engineer wanted to check the meter but when I told him it was...

Wanted to get some advice. I am looking to install secondary return pump to open vented cylinder as it has a long run to two wash hand basins that are supplied from side tapping of the hot water cylinder. What this house also has are 3 bathrooms that have baths and showers which have fancy taps...

Hi all, I'm a Gas Engineer, and new to fault diagnosis/repairs. I've measured the temperature on the flow/return pipes across my combi's secondary heat exchanger, with the hot bath tap on full. I have a Vaillant Ecomax 24 (year 2003). The flow was 70c, the return was 43.8c. I'd be interested...

Hello I'm after advice on the installation of a secondary hot water system . The system will be suppling five bathroom s, a kitchen , cloakroom and utility room in a barn conversion. I usually install on a small domestic level so this is a bit bigger than the norm. The hot water and heating...

Hi plumbers/engineers...Lowly electrician here :biggrin: I've built a new extension on the back of the house and also linked the barn/workshop to the house. I'm converting the old workshop to habitable space at the same time as fitting out the extension. At the back of the old workshop I've...

Hi guys, Been a long time reader on this site so I thought I'd get some opinions on this system as I know there's a lot of knowledge and experience floating about on here. I've been in the trade for 12 years now, gas safe for 6 years, unvented and all the NVQ's etc etc and employ a couple of...

A quick question on secondary returns for HW. I remember reading somewhere that you cannot use Hep2o for a secondary return. Could someone explain why? I was thinking about this the other day, and central heating circuits are fine with Hep2o, so why not HW circuits? Surely both pump hot water...

Over a year ago a good local plumber installed for me (the householder) a new Grant Vortex Eco Utility 26 35 boiler, but ended the job (for which I paid his firm in full) and left the area without first pricing/fitting the secondary return that I had requested. A different - OFTEC-registered -...

Does anyone know of a pipe manufacturer or material like plastic that can be used on a hot water secondary. Needs to be cabled through joists hence the need for the flexibility. Cheers guys

Hi guys, I have a met1 ticket and was meant to fit a secondary meter for another gsr, he has now changed the schedule and I am away when it is due to be fitted. I have been told that any gsr can fit secondary meters without a met1. Can anyone clarify this for me? Thanks

chaps, I have a long run im working on. from the cylinder to the furthest point it takes 48 seconds for the water to hit 50 degrees so was planning on fitting a secondary pump. I know its normal to fit a bronze pump but having had a look about there are plastic body pumps dead cheap. planning...

Keeps spluttering at taps,was thinking of fitting an aav.Also one of the showers bangs randomly possibly air again.Is there a prob with fitting a aav to the loop? Cheers

Public Ladies toilets having a problem with flow of water to washbasins. The taps are infrared with a solenoid, every morning when taps are tried there is only a trickle and its pulsing, after a few minutes they start to splutter and air is ejected and then a good flow of water. If left for half...

Quick question; I've got to install a secondary pre-pay gas meter in a flat for someone. It's just a little U6 meter lookalike with a great big solenoid. Do I need MET1 to install it?

I am at my wits end. We have a Centre Store 300L solar tank. We have not fitted the solar yet, that is for the future. When it was installed, the plumber appears to have plumbed in all the secondary return but there is no pump, so I am assuming that it is not used. However, if we heat the tank...

I've only a single check valve before my circulating pump (for secondary DHW circuit). However, I've noticed a problem. When I have my pump turned off (to save heat loss), I find that for a given tap (especially the shower), when the hot water arrives, it is warm rather than hot, and only later...

Looking at a refurb job with limited space for fitting tmv under each basin,Architect speced tmv in cylinder cupboard,but the HW is on a pumped secondary.Didnt think you could have a Tmv on the secondary pipework...