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by simon@hwch
Sun Jan 11, 2009 5:30 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: quote for new boiler etc.
Replies: 2
Views: 3017

I do all the boiler quotes for my firm. If this industry could quote via email or phone, the nation's boiler swaps would all be much cheaper. Because two tradesmen would not waste hours of their time quoting for a job that they each have only a 33% chance of earning a living from (assumes most house...
by simon@hwch
Sun Jan 11, 2009 9:40 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Potterton Netaheat 10-16 Not firing up
Replies: 5
Views: 10416

Frozen pipes will not stop your boiler from working, but they will cause the overheat to trip. The boiler will then stop.

British Gas do not warrant the internals of a 22yr old heap, for a year after a service. I think you are confusing a service with a maintenance contract.
by simon@hwch
Sat Jan 10, 2009 5:58 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Potterton Netaheat 10-16 Not firing up
Replies: 5
Views: 10416

No.

A Netaheat 10-16 is a very old boiler and far from having a clean bill of health it should be regarded as a decrepit old pensioner.

It always amuses me how many customers tell me their boiler has only had 'light use'. My boiler ran the London Marathon last year.
by simon@hwch
Sat Jan 10, 2009 5:48 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: HOW DO YOU FLUSH THE WHOLE SYSTEM
Replies: 1
Views: 3263

Options are; 1. You go out and buy a Powerflushing machine (£400-£1000 depending on quality) 2. You hire a Powerflush machine (£80) 3. You dose the system with sludge remover additive, eg: Fernox, Sentinel for a few weeks, then drain down, remove every single rad, hose out outside, then refill with ...
by simon@hwch
Sat Jan 10, 2009 5:41 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: One pipe or two?
Replies: 4
Views: 3460

One pipe systems are slightly less efficient but the knocking noise does not warrant a complete repipe.

Buildings fitted with one pipe systems do not knock as part of the design, two pipe systems can be noisy too.

A more reasonable cost than what?
by simon@hwch
Sat Jan 10, 2009 5:37 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: choice of wheels
Replies: 6
Views: 3035

We have had 5 Connects. The TDCi is better, all use a lot of fuel. Weak spots are front tyres on 90hp and 115hp, central locking fails on side door and new part is £170 if you DIY, and the clutches on the early ones can fail at around the mileage you are looking at. I have a white one for sale in Su...
by simon@hwch
Sat Jan 10, 2009 5:33 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Boiler Siting
Replies: 5
Views: 3322

Not only can you put a boiler in the loft, you can also site a modern high efficiency boiler flue up a chimney.

We use a proprietary liner system with Vaillant, and Worcester Bosch have just brought out a chimney liner system for their new 30 and 40kwi floorstanding units.
by simon@hwch
Tue Dec 30, 2008 4:41 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: electric boiler stockist?
Replies: 2
Views: 2524

Plumbcenter are showing 1 at their Malmesbury feeder. You can't collect from there.

If you can find a Plumbcenter open (!), they can order it for next week.
by simon@hwch
Tue Dec 30, 2008 4:37 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: electric boiler stockist?
Replies: 2
Views: 2524

Most of the merchants are off till the new year. The Baxi Electromax is a niche product and you are unlikely to find anyone with one on the shelf on the 5th Jan, never mind about now. Forget the internet resellers, they don't hold any stocks of anything. You place an order, they ring round the merch...
by simon@hwch
Tue Dec 16, 2008 5:51 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: hot water heat exchangerS 1 works fine other has problem
Replies: 1
Views: 2540

If this is a sidewinder fitted into an immersion boss, then they aren't very effective.

If you want help I suggest you describe your system in greater detail, for instance, there are thousands of gas boilers and hundreds of stoves.
by simon@hwch
Tue Dec 16, 2008 5:48 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Range cooker or Condensing Boiler for Water/heating
Replies: 2
Views: 2867

You could fit a Heritage Cooker, which has an integral oil boiler up to 140,000 Btu (around 35Kw). This would be large enough for most houses but you need to do a heating calculation (use the whole house heating method. If you Google "sedbuk.com" you will find info here. The difference in ...
by simon@hwch
Sun Dec 14, 2008 10:15 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Remote switching of Danfoss pumps
Replies: 4
Views: 2914

As a total system solution, Honeywell Hometronic would be worth looking at if you fancy zoning the property into up to 16 zones.

Having extra pumps at the end of the property sounds a bit Heath Robinson from here, but then I haven't seen your installation.
by simon@hwch
Sun Dec 14, 2008 10:12 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Remote Radiators starved of heat
Replies: 9
Views: 4812

If you had stated the boiler used a pump recommendation could be made.

How do you heat your HW in the hotel? Is the HW zone valve jammed open?

Do you have a bypass fitted and has it been adjusted?

All these things you need to look at before condemning the pump.
by simon@hwch
Sun Dec 14, 2008 1:46 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Which wireless thermostat???
Replies: 5
Views: 6492

Best prog room stat RF is the Honeywell CM927. It is a few generations ahead of the Danfoss in terms of ergonomics and reliability.
by simon@hwch
Sun Dec 14, 2008 1:44 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: What heating system is best.... choosing a heating system?
Replies: 6
Views: 4537

I would add that any larger heat pump system will use a thermal store of some type, due to the 'degree minutes' that give efficiency benefits, and the fact that creation of washing temperature hot water takes the heat pump out of maximum CoP mode. If the heat store is well insulated heat loss should...
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