Witton Type 11 Products
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Frequently Asked Questions
What differentiates the Witton Type 11 from a standard single panel radiator?
The Witton Type 11 is a "K1" convector radiator which means unlike a basic single panel radiator it has a row of convector fins welded to the rear panel significantly increasing the surface area and heat output while maintaining a very slim profile ideal for hallways.
How much clearance do I need to leave for the Witton Type 11 wall brackets?
The Witton Type 11 uses standard L shaped wall brackets that typically add between 30mm and 40mm to the radiator depth resulting in a total wall projection of approximately 85mm to 95mm which you must account for when measuring behind doors or furniture.
Is the Witton Type 11 suitable for use with renewable heating systems?
While compatible with heat pumps the Type 11 configuration has a lower surface area than Type 21 or Type 22 models so to achieve the required heat output at lower flow temperatures you would need to size the Witton Type 11 significantly larger (wider or taller) than you would for a gas boiler system.
Does the Witton Type 11 come with the top grille and side panels attached?
Yes the Witton Type 11 is supplied as a fully enclosed unit with factory fitted side panels and a top grille which gives it a neat modern appearance and covers the sharp edges of the internal convector fins making it safer and more aesthetically pleasing.
What is the standard connection layout for the Witton Type 11 radiator?
The radiator features four 1 2 inch BSP connections (two on each side) allowing for standard bottom opposite end (BOE) connection or top bottom same end (TBSE) connection providing flexibility for your pipework layout.
Can I reverse the Witton Type 11 radiator if I damage the front panel?
Generally Type 11 radiators are not reversible because the convector fins are welded to the back of the single front panel meaning if you turn it around the fins would be exposed on the front face so you must ensure the front panel is protected during installation.
How does the heat output of the Witton Type 11 compare to a Type 22 model of the same size?
A Type 22 radiator has two panels and two rows of fins effectively doubling the heating surface area compared to the Type 11 so for the exact same height and width the Type 22 will produce roughly 70 to 80 percent more heat but will be twice as deep.
Why is the Witton Type 11 recommended for small rooms or bathrooms?
Its slim depth takes up minimal floor space which is critical in small rooms or narrow bathrooms and the single panel design heats up quickly to provide responsive warmth without the bulk of double panel radiators.
Do I need a special tool to bleed the Witton Type 11 radiator?
No you only need a standard radiator bleed key to open the air vent located at the top corner of the unit which should be done when the system is cold to release any trapped air and ensure the panel heats evenly across its entire surface.
Is the 10 year guarantee valid if I install the radiator on a direct hot water loop?
No the 10 year guarantee is only valid for indirect closed loop central heating systems where the water is chemically treated because direct hot water loops introduce fresh oxygen constantly which would cause the mild steel of the Witton radiator to rust through very quickly.