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Frequently Asked Questions
Why is there a significant difference in heat output between the Chrome and Anthracite Serpe models?
You will find a distinct technical difference in thermal performance between the two finishes. The Chrome plating has a low emissivity value which means it traps heat inside the steel tube preventing it from radiating effectively into the room. In contrast the Textured Anthracite finish is a powder coating which allows for much higher thermal radiation. For the same 750mm model the Anthracite version outputs 1149 BTUs which is roughly 54 percent more heat than the Chrome version making it the superior technical choice for colder bathrooms.
What are the exact pipe center measurements required for roughing in the Reina Serpe?
The pipe centers for the Reina Serpe are determined by the vertical distance between the top and bottom open ends of the tube or the horizontal width if mounted differently. For the standard installation of the 500mm wide model the connection points are located at the very ends of the tube. The pipe centers are approximately equal to the width of the rail which is 500mm. However due to the manufacturing tolerances of the curved mild steel it is critical to have the physical product on site to measure the exact center to center distance before installing pipework to ensure a stress free valve connection.
Can the Reina Serpe be converted to a dual fuel or electric only towel rail?
Converting the Reina Serpe to dual fuel or electric only is technically difficult and often not recommended. Unlike ladder rails which have long vertical collectors to house a rigid electric heating element the Serpe consists of tight horizontal curves. A standard heating element probe is rigid and straight and cannot fit inside the curved tube structure. Therefore this model is typically listed for Central Heating Only installations. You should consult a specialist if you require a bespoke short element solution but standard kits are rarely compatible.
What type of radiator valves are compatible with the Reina Serpe connections?
The Reina Serpe utilizes standard 1/2 inch BSP female connections at the ends of the tube. The type of valve you require depends entirely on your plumbing setup. If your pipes emerge from the wall you will need Angled or Corner Valves. If your pipes rise from the floor you will need Straight Valves. Because the valves attach to the outer ends of the rail using Corner Valves for wall pipes is often the neatest technical solution as it allows the valve heads to sit parallel to the wall rather than protruding outwards.
How does the wall projection of 87mm impact installation in narrow spaces?
The Reina Serpe has a fixed wall projection of approximately 87mm from the wall to the front face of the tube. This is a relatively slim profile compared to double panel radiators making it an excellent problem solving option for tight spaces such as behind a bathroom door. However you must ensure that you allow extra clearance for the thickness of the towels you intend to hang. The open sided nature of the curve allows you to slide towels on easily without them bunching up against the wall which helps maintain a slim overall profile.
Is the Reina Serpe compatible with low temperature heating systems like heat pumps?
The advertised BTU ratings such as 933 BTUs for the 510mm Anthracite model are based on a Delta T of 50C which is the standard for gas boilers. If you connect this rail to a modern heat pump system operating at Delta T 30C the actual heat output will be significantly reduced typically by half. Given that the Serpe already has a lower output due to its design it may not provide sufficient heat for a room on a low temperature system unless the bathroom is very small or has underfloor heating as the primary source.
How do I properly bleed air from the Reina Serpe given its curved shape?
Bleeding air from a serpentine rail can be technically tricky because air bubbles can become trapped at the top of each curve in the S shape. However the water pressure usually forces air to the highest point of the system. You must install the air vent or bleed valve at the highest connection point. When commissioning the system turn the pump off and let the water settle before bleeding. 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 to protect the mild steel construction and guarantee?
The Reina Serpe is manufactured from high quality mild steel which is durable but susceptible to corrosion if neglected. To ensure the 10 Year Guarantee remains valid you must ensure the central heating system is flushed and contains a chemical inhibitor to prevent internal magnetite sludge. Externally you must clean the rail with a soft damp cloth only. You should strictly 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 solution for difficult wall spaces?
The 270mm high Serpe model is an exceptionally low profile heating unit. This compact size is a technically useful solution for awkward wall spaces where vertical height is restricted such as underneath a window or above a boxed in cistern or bath. Despite its small stature the Anthracite version still generates 366 BTUs which is sufficient to keep a hand towel warm and dry in a guest cloakroom without dominating the limited wall space available.