The Tallis Products
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Frequently Asked Questions
How does the vertical orientation of the Tallis Designer Towel Rail improve heat circulation in compact bathrooms?
The vertical design of the S4H Tallis utilizes natural convection currents more efficiently than horizontal models. Cold air is drawn in from the floor level, heated as it passes over the vertical steel tubes, and rises to circulate warm air throughout the room. This ensures that the radiator heats the entire bathroom volume effectively while occupying minimal horizontal wall space, making it a superior technical solution for narrow walls or areas next to shower enclosures.
What technical steps should I follow to match the Tallis BTU output with my specific room dimensions?
To ensure your bathroom reaches the desired temperature, you must calculate the heat loss of the room before purchasing. Use the Budget Radiators BTU Calculator to input your room height, width, and window type. Compare this result against the Delta T50 rating of the Tallis models. For example, the 1340mm x 600mm model provides 2320 BTUs. If your room requires more heat than the rail provides, the rail will only warm towels and not the air, so always choose a model with a slightly higher output than your calculated requirement.
How can I configure the S4H Tallis for dual fuel operation to dry towels when the central heating is off?
The Tallis can operate as a dual fuel radiator, allowing usage during summer months. To achieve this, you need to install a T-piece on the return valve connection. This allows you to insert an electric heating element into the vertical collector while keeping the radiator connected to your central heating pipes. When the boiler is off, you simply switch on the electric element to heat the rail independently, ensuring warm towels year-round without heating the rest of the house.
What are the exact pipe center requirements and wall projection dimensions for installing the Tallis in tight spaces?
Precise measurements are critical for first-fix plumbing. The Tallis has a wall-to-front projection of 82mm, which is slim enough for use behind doors or in small en-suites. For pipe centers, you should measure the width of the radiator (e.g., 500mm or 600mm) and subtract roughly 30mm to 50mm depending on your specific valve choice, or allow for the pipes to come out of the wall at the width of the radiator vertical collectors. Always consult the technical data sheet for the exact pipe center deduction before laying pipes.
How does the internal treatment of the steel Tallis radiator prevent corrosion in high humidity environments?
The Tallis is manufactured from high-grade mild steel which is susceptible to rust if untreated. To solve this, the radiator undergoes a rigorous anti-corrosion treatment process before the final finish is applied. This involves internal cleaning and a phosphate coating that bonds to the steel, preventing oxidation caused by the water inside the system. The exterior is finished with a durable epoxy powder coating that seals the metal against the humid, moisture-heavy air found in bathrooms.
Does the number of horizontal sections on the Tallis Ladder Rail impact the overall Delta T50 heat output?
Yes, the surface area is directly linked to thermal performance. The 1340mm height model features 15 horizontal sections, creating a larger surface area for heat exchange compared to the 780mm model which has only 9 sections. This additional steel mass allows the larger unit to emit 2320 BTUs compared to 1378 BTUs for the smaller unit. If your primary goal is high heat output rather than just storage, you should technically prioritize the model with the highest number of sections that fits your vertical space.
Can I order the Tallis radiator in custom RAL colours to match specific bathroom interior design codes?
While the standard S4H Tallis comes in a White epoxy finish, it is technically possible to order it in specific S4H RAL Colours. This is done through a special order process where the steel is powder-coated in your chosen hue. This solves the problem of mismatched fixtures, allowing you to coordinate the radiator with specific tile codes or brassware finishes like matte black or anthracite, though this customization typically adds to the lead time.
Is the Tallis compatible with standard 15mm pipework and what type of valves are best suited for its connections?
The S4H Tallis utilizes standard 1/2 inch BSP connections at the bottom of the vertical collectors, making it fully compatible with standard UK 15mm copper or plastic pipework. Since the connections are on the underside, you will require Angled Valves if your pipes come from the wall, or Straight Valves if your pipes come up from the floor. Using the correct valve orientation is essential to prevent flow restriction and ensure a watertight seal.
How do I properly bleed the Tallis vertical rail to resolve cold spots at the top of the radiator?
If the top bars of your Tallis rail are cold while the bottom is hot, air is trapped in the system. To fix this, turn off your central heating pump to stop the flow. Locate the bleed valve at the top of the vertical collector. Use a radiator key to open the valve slightly until the hissing air stops and water begins to trickle out. Close the valve immediately. This process restores the full internal water volume, allowing the heated water to reach the top sections and restoring maximum thermal efficiency.
What technical standards does the Tallis meet to justify its 10 year manufacturer guarantee?
The 10 year guarantee indicates the radiator is manufactured to BS EN 442 standards. This technical standard verifies that the radiator has been pressure tested to well above its operating pressure (typically tested to 10 bar for a working pressure of 4-6 bar) to ensure there are no leaks in the welds. It also certifies the BTU output has been laboratory verified. This guarantee covers you against manufacturing defects such as leaking welds or flaking paintwork under normal operating conditions.