Coneva Horizontal Products
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Frequently Asked Questions
How does the mild steel construction of the Reina Coneva horizontal radiator technically differ in thermal response compared to a traditional cast iron alternative?
The Reina Coneva is manufactured from mild steel which has a significantly lower thermal mass and higher thermal conductivity than cast iron. Technically this means the Coneva will heat up and cool down much faster usually within 15 to 20 minutes. This makes it more responsive to modern programmable thermostats allowing for rapid room heating on demand rather than requiring the long pre heating periods associated with heavy cast iron emitters.
What are the precise pipe center rough in dimensions I need to calculate for the Reina Coneva given its 113mm depth and wall bracket spacing?
The Coneva has a depth of 113mm. The wall brackets typically position the back of the radiator approximately 30mm to 50mm from the wall depending on the specific bracket adjustment. Therefore the pipe centers should technically be roughed in at a distance of approximately 86mm to 96mm from the finished wall surface. You must also allow for the valve width adding approximately 90mm to the total width of the radiator (e.g. radiator width + 90mm) to determine the horizontal pipe spacing.
Does the unique coned profile of the Coneva columns require a specific cleaning tool to maintain convective efficiency compared to standard round tubes?
The coned profile creates a tapered gap between the columns which can trap dust differently than uniform round tubes. Standard duster heads may not reach the narrower base of the cone. To solve this technically you should use a tapered microfiber radiator brush or high pressure compressed air. Keeping these tapered airways clear is critical because the Coneva relies on convection currents rising through these specific gaps to distribute heat into the room effectively.
Can I technically install the Reina Coneva horizontal radiator on a plasterboard stud wall given its weight or is masonry required?
While lighter than cast iron a large mild steel Coneva (e.g. 1420mm wide) creates a significant shear load when filled with water. You strictly cannot hang this on plasterboard using standard toggle fixings alone. You must technically locate the vertical timber studs and anchor the brackets directly into them. If the stud spacing does not align with the radiator bracket positions you must open the wall and install a horizontal timber ply pattress behind the plasterboard to bridge the gap and provide a solid fixing point.
How does the powder coated finish on the Anthracite or White Coneva models technically compare to wet paint regarding durability in high humidity bathrooms?
The Reina Coneva features a polyester powder coat that is electrostatically applied and cured under heat. This creates a cross linked molecular bond that is harder and more chip resistant than standard wet paint. Technically this makes it highly suitable for bathrooms as it seals the mild steel against moisture oxidation. However if the coating is deeply scratched down to the bare metal rust will spread under the coating so any damage must be sealed immediately with a matching touch up stick.
Is the Reina Coneva horizontal radiator technically compatible with a monoblock valve installation to save floor space?
The Coneva typically has standard 1/2 inch BSP tappings located on the bottom sides (BOE - Bottom Opposite Ends). It generally does not feature central 50mm tappings required for a standard H-block or monoblock valve. To use a single entry point you would technically need to use a specific flow diverter valve or a single entry valve kit but this is non standard. The most reliable technical installation remains the standard flow and return valves at opposite ends to ensure full water circulation across the radiator width.
What is the flow rate requirement for the largest 1420mm Coneva model to prevents cold spots in the center of the radiator?
The 1420mm Coneva produces nearly 7000 BTUs requiring a substantial flow of hot water. If your system pump head is weak or the lockshield is restricted the water may follow the path of least resistance flowing straight through the bottom header without rising fully into the vertical columns. You must technically balance the system to ensure adequate differential pressure across this radiator forcing the water to circulate up into all 20 sections. If cold spots persist you may need to check if the internal baffles are correctly seated.
How does the heat output of the mild steel Coneva change if I operate it on a Delta T 30 heat pump system instead of a gas boiler?
Mild steel radiators like the Coneva are excellent for heat pumps due to their responsiveness but the output will drop. At Delta T 30 (common for heat pumps) the output will be approximately 51% of the stated Delta T 50 figure. For example the 2041 Watt model will output roughly 1040 Watts. You technically need to oversize the radiator significantly to compensate for this lower flow temperature ensuring the surface area is large enough to heat the room at 45 degrees C flow.
Are there any technical restrictions on using chemical inhibitors with the Reina Coneva mild steel radiator?
Mild steel is susceptible to internal corrosion if oxygen is present in the water. You must technically flush the system to BS7593 standards to remove flux residues before filling. You must use a high quality chemical inhibitor suitable for mixed metal systems (steel, copper, brass). Avoid using aggressive descalers or acidic cleansers that are not fully neutralized as these can attack the steel weld points inside the Coneva leading to pinhole leaks.
What is the correct technical procedure for venting air from the Reina Coneva horizontal radiator to ensure the top rail gets hot?
The air vent (bleed valve) is located at the top corner of the Coneva. Because horizontal column radiators have vertical waterways air can get trapped at the very top of each column arch. When filling the system you should technically tilt the radiator slightly towards the air vent side during installation (by 1-2mm) or simply ensure it is perfectly level. You must bleed the radiator while the pump is off to allow air bubbles to rise to the top and repeat this process after the first few heating cycles as dissolved air is released from the fresh water.