The Serpe Products
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Frequently Asked Questions
How does the unique serpentine design of the Reina Serpe affect its heating performance compared to ladder rails?
The Reina Serpe features a single continuous steel tube curved into a sinuous "S" shape. While this creates a striking architectural focal point, technically it has a lower surface area than a multi-bar ladder rail of similar dimensions. This means the overall BTU output is generally lower (e.g., 743 BTUs for the 750mm Chrome model). It is designed primarily for drying towels and providing supplementary heat rather than acting as the sole heat source for a large bathroom, unless the room is well-insulated and small.
Why is there such a significant heat output difference between the Chrome and Anthracite models?
You will notice a major technical difference in performance between the finishes. For the 750mm height model, the Chrome version outputs 743 BTUs, whereas the Textured Anthracite version outputs 1149 BTUs. This is because chrome plating has a low thermal emissivity value, meaning it traps heat within the metal. The powder-coated anthracite finish is far more emissive, allowing it to radiate approximately 54% more heat into the room. If warmth is your priority, the Anthracite model is the superior technical choice.
Can the Reina Serpe be installed as a dual fuel or electric-only towel rail?
Installing the Reina Serpe as a dual fuel or electric-only unit is technically challenging due to its shape. Unlike ladder rails with vertical collectors that accommodate long electric heating elements, the Serpe consists of horizontal curves. A standard rigid heating element probe would not fit inside the curved tube. Therefore, this model is typically recommended for Central Heating Only installations. You should consult a qualified electrician or the manufacturer if you are seeking a specialized short element, but standard conversion is generally not supported.
What are the pipe center requirements for the Reina Serpe installation?
The pipe centers for the Reina Serpe are determined by the two open ends of the tube. For the 500mm wide models, the connection points are at the bottom (or top/bottom depending on orientation preference, though typically bottom-fed). The pipe centers are approximately equal to the width of the rail (500mm). However, due to the manufacturing tolerances of the curved steel, it is critical to have the physical radiator on-site to measure the exact center-to-center distance before roughening in your pipework to ensure a stress-free valve connection.
Does the Reina Serpe require specific valves given its single-tube design?
The Reina Serpe uses standard 1/2" BSP connections. The type of valve you need depends on your pipework location. If your pipes come from the wall, you will need Angled or Corner valves. If they come from the floor, you will need Straight valves. Because the connections are at the very ends of the "snake" shape, the valves will sit at the outer edges. Using "Corner" valves can be a neat technical solution if piping from the wall, as they keep the valve heads tucked in line with the rail for a streamlined look.
How does the 87mm wall projection impact the installation in small spaces?
The Reina Serpe has a fixed wall projection of approximately 87mm. This is a relatively slim profile compared to some double-panel radiators. This makes it an excellent problem-solving option for narrow spaces, such as behind a bathroom door or in a small cloakroom. You must ensure, however, that you allow for the additional depth of the hung towels. The open-sided nature of the curve allows you to slide towels on easily without them bunching up against the wall.
How do I bleed air from the Reina Serpe given its continuous curve shape?
Bleeding air from a serpentine rail can be technically tricky because air bubbles can get trapped at the top of each curve. However, the water pressure usually forces air to the highest point. You should install the bleed valve (air vent) at the highest connection point. When commissioning, turn the pump off and let the system settle. You may need to bleed it multiple times over the first few weeks to ensure all air pockets are removed from the curves, ensuring the rail heats evenly from top to bottom.
What maintenance is required for the mild steel construction?
The Reina Serpe is made from high-quality mild steel. To ensure the 10-Year Guarantee remains valid, you must ensure the central heating system is chemically inhibited to prevent internal corrosion (magnetite sludge). Externally, the rail should be cleaned with a soft damp cloth. You must avoid using abrasive scourers or acidic cleaning agents, especially on the Chrome finish, as this can damage the plating or powder coating and lead to external rusting in the humid bathroom environment.
Why is the 270mm height model a useful technical solution?
The 270mm high model is an exceptionally low-profile unit. This size is technically useful for "awkward" wall spaces, such as underneath a window, above a boxed-in cistern, or in a localized area like above a bath where vertical height is restricted. Despite its small stature, the Anthracite version still offers 366 BTUs, which is sufficient to keep a hand towel warm and dry in a guest cloakroom without dominating the wall space.