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combi

Combi coupé is a marketing term used by Saab to describe cars with a sloping coupé-like rear hatchback. The term joins the European term "combi" (for an estate car / station wagon) with coupé.The design combines the functionality of a hatchback with the appearance of a fastback. As per a hatchback, the combi coupé incorporates a shared passenger and cargo space.

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  1. J

    Help me understand this pump curve

    This pump curve is from a combi boiler with an internal automatic bypass valve. Why is the maximum flow obtained with the bypass valve in the middle position? Shouldn't a fully closed bypass valve result in a higher flow through the main circuit? Also, any idea what 'V1' and 'V2' mean (no...
  2. B

    Is 22mm supply pipe always required for combi boilers?

    Hi All, I need your advise as I'm really concerned here. I only just had regular boiler replaced with combi (Vaillant ecoFIT Pure 25kw). I had few surveys done and everyone stated the gas supply pipe from the meter to the boiler must be changed from current 15mm to 22mm. The plumber I used said...
  3. Prof Yaffle

    Combi boiler losing pressure - No leaks, many new parts, but still...

    I'll pop this into the general advice forum as it seems the most active, but mods - feel free to move if there's somewhere more appropriate. Thank you! --- Apologies, but yet another "boiler losing pressure" thread - I've read many others, but am no closer... Not my boiler (parents), so...
  4. R

    Ideal Logic Combi ESP1 Time clock jumper link

    Hi looking to remove my existing rf time clock and refit the oem link, but the installer didn’t leave it, anyone point me in the right direction
  5. J

    Gloworm combi boiler help!!!

    Some advice would be very much appreciated. Our Gloworm Ultracom 38CXI combi boiler recently developed a few issues. Recently some our taps/shower but not all of them will run hot initially and then run cold after around 2 minutes of running hot. The heat exchanger was replaced by our...
  6. Beshman

    Need new Thermostat for 2016 Ideal Logic Plus Combi 30

    I've got a 2016 Logic PLus Combi 30 and a Salus RT505TX RF Thermostat The thermostat seems to keep losing connection, no matter the placement. It can be next to the boiler or in the next room and it still not get a connection. Just a weird blackspot in the kitchen blocking it (could be the...
  7. J

    Combi boiler keeps locking out

    Hi everyone. I was hoping someone here might be able to help me with a problem I have. After using our shower for around five minutes it seems to be causing the boiler to lock out. It’s a thermostatic mixer shower running from a Worcester Greenstar 30si combi boiler. Weirdly, this only seems...
  8. S

    Gap in boiler tube help

    Hi, I just moved into a house about a month ago and today I noticed a small gap in the tube above the boiler flue. Is this something I need to call an engineer out asap? I guess so but wanted to post just in case people have explanation of this setup. I poked a tiny tie wrap and it goes all...
  9. S

    Need to renew 17yr old combi boiler.

    Renewing 17yr old Gloworm combi boiler, running dom h/w and 15 rads, 40% are doubles. Water flow from stop valve has been measured as 6L p/m, is that enough to run system effectively?
  10. C

    Old Combi Boiler Firestop Advice please

    Hi, We have 28 year old Valiant Combi Boiler in our Bungalow airing cupboard, where the vertical fan flue goes up into roof. As you can see in photo, we need a firestop plate, A) for fire safety B) Hopefully seal around pipe may stop warm air travelling through gap into roof space, and causing...
  11. J

    Magnacleanse on Combi

    Hi I have recently purchased one of the magnacleanse flushers and I know the process of using it as in isolate each radiator one at a time and vibrate around each one. But what do you actually set the Combi boiler to when doing it? Do you just put it on max rate or do you just have the heating...
  12. P

    Worcester 37 combi flow adaptor cost

    What would be a fair charge to fit a flow adaptor to a Worcester combi boiler? Thanks
  13. E

    new grants external oil fired combi

    Hi, is it ok to turn on and use new grants external oil combi boiler, before it gets commisioned next week ? or can this cause any damage at all, ? many thanks.
  14. R

    Most Reliable combi Gas boiler (25KW)

    Been a retired plumber now for almost 20 years so a bit out of touch with the trade. I am wanting to replace a combi boiler . What is the most reliable and cheapest boiler to install, I would welcome any comments on those so called 5/10 year warranties that are given out. I would prefer...
  15. T

    Heating eng` required in Fife to service a 3 year old Vogue combi C40

    I`m looking to hire asap. I feel the heating isn`t heating the room(s) up as quickly as they used to. I have about 16 radiators but only really use 4-5. The rest sit on frost free. I bled them all and apart from the bathroom towel warmer that hissed a little, all were fine. Went away 2 weeks...
  16. J

    UFH and Rad Pipework Layout From Combi.

    Hello I'm new to the forum and wanted to ask a question after having a good read. House is undergoing a complete renovation and new pipework needs to be installed for the heating system. The current boiler is a WB Greenstar 34CDI combi boiler and is not very old so I wanted to reuse this in a...
  17. I

    Main combi eco 30 pump overrun

    Hi, I have noticed recently that when the central heating, set at 60 on boiler, goes off the pump no longer overruns for the period of 3 minutes like it always has. Is this a problem? With the dhw it does the 1 minute overrun still. Thanks.
  18. S

    Camray 5 Combi Oil Boiler locks out on hot water demand

    Having a few issues with my combi boiler, its 14 years old now and due to be replaced as we are building extension, but need to get another 10 months out of the combi yet! Was having pressure and lockout issues and the relief vale had activated couple times, expansion tank is fuel of water so I...
  19. W

    Ideal Logic Combi 35

    Hi all, I've got a bit of a strange issue relating to my Ideal Logic Combi 35 which has recently started displaying a F2 error when trying to use the central heating system. The boiler works fine when using hot water, however when I try to turn on the central heating system the boiler works...
  20. P

    Intermittent hot water problem wb combi

    WB combi has recently had it's annual service. It has been working reliably up to that point for many years. Now we keep losing hot water - temps on boiler increase over 100 on the display and it shuts down heat. Engineer claims it's coincidental and must be a blocked heat exchanger that has...
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