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  1. M

    Intermittent Vs Continuous Bathroom Extract Fan?

    Hey guys! I've been looking at a Vent Axia silent extract fan for a bathroom with shower. The fan continuously runs and boosts when the light is switched on or via humidistat. I was looking at the spec and the extraction rate is only 15 l/s which is the bare minimum for a small...
  2. S

    Commissioning continuous mechanical extract ventilation or cmev in domestics

    Hi all, I've tested a bit of heat recovery before so mev is much simpler, just started testing a plot today. Theres 3no outlets;kitchen, down stairs wc and bathroom first floor, all leading to the loft where the mev unit sits. Was looking for around 7l/s at trickle mode at all outlets which...
  3. N

    Fusing Down Extract Fan To 3A

    Hi all, Most manufacturers state that their extract fans need to be fused down to 3A. I don't know many sparks that actually do this, however I did on my last one. I'm looking at doing this again but a different method. Has anyone ever fitted an in - line fuse holder with a 3A fuse in the...
  4. N

    2 inline extract fans

    Hi all, Just after a bit of advice. I have split my bathroom into two so I now have a bathroom and shower room next to each other. I would like to fit an extract fan in each room but only with one hole to vent outside. What's the best option? Would I need 2 extract fans joined with ducting...
  5. D

    Odd problem with Fan belts on extract fan.

    This situation has happened at work and I'm wondering if anyone has come across anything similar because i'm a little stumped. Came in to find HVAC system wasn't running as the BMS was recording an airflow failure in the extract part. Large belt driven impeller extract fan for the building run...
  6. N

    Bathroom Extract Fan Query

    Hi all, Just a quick one. Replacing an extract fan and installing a 12v one with transformer. Does the fan require an isolator or can it be left without? If so, I will mount it in the loft next to the transformer. Also, as it's only 12v on the load side of transformer, can it be wired in...
  7. H

    Bathroom Extract Fan Costs!

    I Have been asked to quote for a bathroom extract fan. The fan is low voltage manrose 4inch, 3 pole isolator above bathroom door on landing, rcd fused spur and transformer in loft. I will be coring the hole and fitting vent etc. Minor works and notification. I am still getting used to...
  8. Rockingit

    Domestic Ventilation Installer

    Having been asked now twice in as many months for certs on mechanical extraction in new builds, I've done some reading up and everyday is a school day. Hands up all those (like me) who never knew that since the 2010 version of Part F, installation of ordinary ventilation fans on new builds...
  9. M

    Pir sensor and extract fan

    Can anyone tell me if its possible to wire an extract fan to a pir sensor? And if you can, HOW?!?!?!? thanks
  10. T

    Bathroom extract fan installation, flex outlet or not?

    Hello all, I've been reading posts on here about bathrrom extracts, and got me thinking. Do you guys install a flex outlet adjacent to them or do you simply go straight in to the fan. I've always used a flex outlet, as these things never tend to last over 2/3 years and it makes replacement...
  11. S

    100mm Mixed flow extract fan ducting prob

    I've fitted this into my new place an old bungalow and it's extracting from the bathroom. It performs great but the ducting gets full of water, I mean Like loads ! I rwalised when the fan started to make a funny noise. DO I need a fall on the ducting like you do on a waste pipe ? I'm...
  12. sythai

    Extract Fan ideas...? Help please

    Evening All.... Just going over some plans / full property refurb to include a couple of new en-suites, both with same issues. Extract fan required, few hurdles to get over as below (I do like a challenge honest): - 3100mm ceilings (floor plan approx 3500x2500) - no external wall to core...
  13. S

    Bathroom Extract Fan

    Any Special Location issues with putting an extract fan over the shower basin. Ceiling mounted over 2.25m so outside the zones? Same bathroom has a standard pendent set also outside the zones. Just all looks odd!
  14. T

    extract fan motor issues

    Hi All, forgive me if this has been covered and if this post is in wrong section but the general forum wouldn't open up for me. Now the problem i got is, i went to a job to wire up an extract fan in a pub after they bought a new gas oven the gas is controlled by a valve, emergency stop and...
  15. Luminous

    extract fan and part f

    I think its part f. Can anyone give me or point to a definitive answer to extract fans in bathrooms? I've done a rewire on a house which is refurbed for rental (and no extension). I put in the wiring for bathroom extract fan as requested. However customer didn't then want one (?!). I said you...
  16. infinity

    10M extract fan run

    i Have two extract fans to install, nearest outside wall is 10M away, anyone know if a normal extract ceiling fan will be ok for use? Not installed a ducting run that long before :/
  17. W

    Extract fan failure

    Hi everyone, I have a fault on an industrial extract fan unit in a plantroom. The unit consists on 2 fans, a pcb mounted on the side and an isolator. The fan is linked to a trend bms system. When the fan unit is switched to hand on the control panel, one of the fans runs for about 5...
  18. J

    Fan Switching...

    Hi Guys, Installing a whole house vent system that will tick over constantly. PIR's to be installed in each bathroom to boost the fan while the bathroom is occupied. The client would like an extra vent in the utility room to extract the heat while the tumble drier is running...?!? Crazy i...
  19. J

    T.p.n isolators for extract fan

    Briefly went to help a guy /Sparks first fix a job(i was agency) and he seemed to have an idea of wiring an additional spur in conjunction with a triple pole isolator for a bathroom fan.I have normally never used a spur and just used a triple pole isolator which in turn was fed from a 6amp m.c.b...
  20. the pict

    shower pump and extractor

    Any one ever wired a extractor to run when the pump is running only, is there a connection within the electrics connection box IE run side of the motor. over run I suppose is easy enough from the perm live Pict

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