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by DONFRAMAC
Tue Jun 23, 2009 11:53 pm
Forum: Electrics Forum
Topic: Storage heater blowing fuse
Replies: 13
Views: 19466

I have 1st-hand experience of PYRO type elements, on my Tricity Contessa Delux cooker, giving a short-to-earth, only when V.hot, tripping the house RCD. The elements in storage radiators are made of the same PYRO, with the same life-time. I would strip-down the radiator and renew ALL the elements, g...
by DONFRAMAC
Sat Nov 22, 2008 4:39 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: meggaflow heating problem
Replies: 3
Views: 2290

megaflo/suprima problem

The Baxi-owned Suprima range of boilers has been the subject of more than one BBC Watchdog complaint programmes. The result is that a major problem with the main Printed Circuit Board in the boiler casing got redesigned, and before it was available, owners were given free replacement PCB's, which ju...
by DONFRAMAC
Sat Jul 26, 2008 3:10 am
Forum: Plumbing Forum
Topic: Combi Boiler help please!!!!!!!!!
Replies: 3
Views: 2684

NEW COMBI BOILER--CHOICE

My daughter has decided to renew her v. old gas boiler, with a Worcester Greenstar ( part of the well reputed Bosch group ), but she will be retaining the electric shower. My own Gloworm gas boiler ( vented system with 210 litres of hot water storage ), has been replaced with a Potterton Promax 28 H...
by DONFRAMAC
Wed Apr 30, 2008 4:55 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: what 30 kw kitchen unit fit boiler
Replies: 4
Views: 3599

There is a revised PCB now for the SUPRIMA. Storage conditions can cause corrosion in PCB's at solder joints, just moisture to blame, activating residual flux. I now have a Potterton Promax 28HE+, which I am assured is about as good as you can get at the price. I would have preferred a Worcester Gre...
by DONFRAMAC
Fri Mar 21, 2008 6:25 pm
Forum: Plumbing Forum
Topic:
Replies: -1
Views:

My new Potterton Promax 28 HE+ condensing combi delivers 11.7 litres/min DHW at 64 deg C. This delivers to a MIRA ELEMENT EV blender shower, from its wall-mount in the garage, to the first floor bathroom, via 15 mm copper and thro' washing-machine ball-valves. This is almost as copious as the power ...
by DONFRAMAC
Tue Mar 18, 2008 1:58 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: New Boiler
Replies: 4
Views: 2859

The Baxi/Potterton range which gave great trouble from the PCB, was the Suprima/Suprema range, and featured on the BBC Watchdog Programme. They have since come up with a revised PCB.(The PCB was mounted on the RHS of the casing). No other range has been remarked on, and the trade regards these 2 bra...
by DONFRAMAC
Tue Mar 18, 2008 1:43 am
Forum: Plumbing Forum
Topic: what type of boiler to choose.
Replies: 1
Views: 2569

I believe there is more than one brand available, which combines the use of pressurised water combi boilers, with a storage cylinder of some strength, incorporating an immersion element for emergency use. This "MEGAFLO" system, is available in the Baxi/Potterton higher-priced ranges, using...
by DONFRAMAC
Tue Mar 18, 2008 1:20 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Using inhibitors/protertors.
Replies: 3
Views: 2561

The company which produces "SALAMANDER" brand cleansers and inhibitors, offer a testing service for your anti-corrosion strength, so you can top-up as needed. The steel your radiators are made of reacts with water to produce a magnetic type of iron oxide called magnetite. There is a produc...
by DONFRAMAC
Tue Mar 18, 2008 12:49 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: New Baxi Combi Boiler
Replies: 2
Views: 5022

A 28 KW boiler should be overkill, unless the gas supply is deficient, as it would be if fed thro' 15 mm piping, or the gas supplier cannot keep the pressure up to standard. You can only expect hot water flow of 11.5 litres/min at 64 deg. C, which is slow for a bath but great for a blender shower. U...
by DONFRAMAC
Sat Mar 15, 2008 1:20 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: New Boiler
Replies: 6
Views: 2765

Your room-stat should not be in your main living-quarters, but more commonly in the hall, beside the programmer, and away from the hall rad., which is normally fitted with 2 isolator valves set wide-open. Fluctuating temperature in the hall usually makes the stat. cycle, and the thermostatic radiato...
by DONFRAMAC
Mon Mar 10, 2008 2:46 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Condensing combi - acidic waste?
Replies: 3
Views: 3109

The condensate liquor is indeed acidic, and has to be plumbed out to a soakaway, at least 0.5 metres away from the building. Mine uses 1" bore white PVC waste piping, leading into a larger size, before going underground to a gravel-filled perforated PVC pot below my path. The 2 sizes of pipe ar...
by DONFRAMAC
Sat Mar 01, 2008 3:41 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Baxi boilers any good?
Replies: 25
Views: 97066

My old GLOWORM 40,000 BTU's/hr boiler (~12 kW), operated on a 15 mm gas pipe, but my new Potterton Promax 28HE+, needs 22 mm sized gas piping to deliver enough gas-flow. I expect your 24 kW unit will also need the 22 mm pipe size, especially when you consider the drop in gas-main pressure to be expe...
by DONFRAMAC
Wed Jan 30, 2008 3:47 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: MAIN CONDENCING BOILER FAULT
Replies: 2
Views: 2526

It looks as though there is some gas in the radiator loop, which will respond by showing extra pressure, when the DHW is operating, as it shuts off the rads. pump, so the fluids in the rads. system will occupy more volume, until the DHW use stops. I would shut-down the boiler, and air-bleed the rads...
by DONFRAMAC
Tue Jan 08, 2008 2:31 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: price
Replies: 3
Views: 2384

Plumbing work in my area, which is short of reputable time-served men, is charged at £25 + Vat/hour, so it seems OK, so long as you have checked out his previous history with customers, and elsewhere. It is easy to be conned, and some corners can be cut re. the cleansing, and recommissioning of the...
by DONFRAMAC
Tue Jan 08, 2008 2:13 am
Forum: Appliances in the Home Forum
Topic: Tumble Dryer venting
Replies: 4
Views: 4811

Shower extract fans route moist air over the cieling, into the soffit-box and down to a grille in the soffit panel. You can buy just the wire-reinforced polythene flexible tubing if you want, at builders merchants, or search the net, especially under "VENTAXIA". (this tubing is part of the...
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