Todi - Black Products
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Frequently Asked Questions
How does the Black Powder Coated finish impact the thermal efficiency compared to Chrome?
The Matte Black finish on the Todi is a powder coating which is thermally efficient. Unlike chrome plating, which can insulate the steel and reduce output by up to 30%, the black powder coat allows for excellent heat radiation. For example, the 1200 x 415mm model outputs 1981 BTUs (581 Watts) at ?t50
What are the specific pipe centres for the Todi Black 1200 x 260mm model?
For the Todi Black, the pipe centres are effectively the width of the radiator minus the valve allowances, but technically, the inlets are on the bottom of the vertical collectors. For the 260mm wide model, the pipe centres are 260mm. When installing with standard angled or straight valves, you must allow approximately 80-90mm extra for the valve bodies. This means your rough-in pipework should be approximately 340mm-350mm apart. Always measure the specific valves you intend to use before fixing copper pipes, as the Todi's vertical collectors are quite thick.
Can the Todi Black be converted to Dual Fuel and where is the element installed?
Yes, the Todi Black is made from Mild Steel and is suitable for Dual Fuel conversion. However, due to its vertical orientation and specific collector design, the electric element must be installed in one of the bottom vertical legs using a T-Piece. For the narrower models (108mm or 260mm), finding a compact T-piece that doesn't look bulky is a challenge. You must also ensure the element wattage (e.g., 150W or 300W) matches the liquid volume. A 600W element would likely be too powerful for the smaller 800x260mm unit, risking internal pressure buildup.
What is the wall projection of the Todi Black and why is it deeper than standard flat rails?
The Todi Black has a depth specification of 115mm from the wall to the front face. This is due to the square profile of the tubes and the mounting brackets. While this is not as deep as some looped designs (like the Ticino), it is still deeper than a basic flat ladder rail (usually ~80mm). In a very narrow cloakroom or behind a door, this 115mm projection is critical to check to ensure the door handle does not strike the radiator or that it doesn't encroach on the standing space at the basin.
Does the Todi Black require flow diverters or specific balancing for the 108mm narrow model?
The 108mm model consists of just two vertical sections. Technically, water flows up one side and down the other (or distributes via a manifold effect). In such a narrow, tall column (1200mm high), flow balancing is less of an issue than in wide rails, but "short-circuiting" can occur where water flows straight across the bottom. To solve this, ensure the Lockshield valve is adjusted to force water up into the columns. If the top remains cold, it is usually an air lock (requiring bleeding) or insufficient pump pressure, rather than a need for internal diverters.
How do I bleed the air from the Todi Black given its vertical tube design?
Air naturally rises to the highest point. On the Todi Black, the bleed valve (air vent) is located at the top of one of the vertical collectors. Because the tubes are square and vertical, air can get trapped at the very top of each section. When filling the system, you must vent it carefully. If you hear a "trickling" sound, it indicates air pockets. You may need to tilt the radiator slightly during dry-hanging to ensure the bleed valve is at the absolute highest point, or bleed it multiple times over the first week of operation as dissolved air is released.
Is the Todi Black suitable for a low-temperature Heat Pump system?
The listed outputs (e.g., 897 BTU for the 800x260mm model) are at Delta T50 (?t50
How does the Mild Steel construction withstand bathroom humidity compared to Stainless Steel?
The Todi is made of Mild Steel, which is ferrous and prone to rusting if exposed to oxygen and water. However, the "Black" aspect is a robust powder coating that seals the steel from external moisture. Technically, as long as this coating is not scratched or chipped, it offers excellent protection. If you chip the paint (e.g., by dropping a tool), you must touch it up immediately to prevent rust spreading under the paint. Internally, the steel must be protected by a chemical inhibitor (like Sentinel X100) in the central heating water to prevent corrosion from the inside out.