Liberty 865mm Products
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Frequently Asked Questions
Considering the Liberty 865mm radiator weighs significantly more than standard models often exceeding 300kg how do I assess if my suspended timber floor can support this point load without structural reinforcement?
The Liberty 865mm is an exceptionally heavy radiator weighing approximately 14kg per section. A 20 section model weighs nearly 300kg which is comparable to a grand piano concentrated in a small area. If you are installing this on a suspended timber floor you must locate the joists and ensure the radiator feet sit directly on top of them. In many cases you will technically need to lift the floorboards and install noggins or extra bracing between the joists to distribute this massive weight safely and prevent the floor from bowing over time.
The Liberty 865mm model has a substantial depth of 220mm so how do I calculate the total projection from the wall including the necessary air gap to ensure it does not obstruct walkways or furniture?
The 220mm depth refers only to the radiator body itself. To solve the installation footprint you must add the required clearance from the wall. We recommend a gap of at least 30mm to 50mm behind the radiator to allow for the wide columns to radiate heat efficiently. This means the front face of the radiator will project roughly 250mm to 270mm into the room. You must measure your hallway or room width carefully to ensure this significant projection does not create a trip hazard or block door swings.
With a massive heat output of over 500 BTUs per section does the Liberty 865mm radiator require larger diameter pipework than the standard 15mm copper piping to ensure adequate flow rate and heat distribution?
For smaller assemblies up to 10 sections standard 15mm pipework is sufficient. However for large banks of the Liberty 865mm (e.g. 20 sections or more) the total output can exceed 10000 BTUs. In these cases it is technically advisable to run 22mm pipework as close to the radiator as possible before reducing to 15mm at the valve. This ensures a high volume of hot water reaches the radiator quickly preventing the far end of the long 2 column structure from remaining cold due to flow restriction.
Since the larger configurations of the Liberty 865mm radiator are delivered in multiple batteries due to weight what specific tools and sealants are required to assemble them watertight on site?
Because a fully assembled Liberty 865mm radiator is too heavy to lift safely large orders are shipped in smaller blocks. You will need a heavy duty Cast Iron Radiator Joining Key and a pair of joining nipples which are usually provided. You must use a substantial amount of jointing compound or hemp on the threads. The key technical step is to tighten the nipples gradually alternating top and bottom to pull the heavy 220mm deep faces together evenly without pinching the gasket which would cause a leak.
Given the 220mm depth of the Liberty 865mm radiator do I need to purchase specific long tail radiator valves or extensions to connect to my pipework without stressing the joints?
Yes the pipe centers for the Liberty 865mm are positioned centrally within the 220mm depth meaning the pipework will be roughly 110mm plus the wall gap away from the skirting board. Standard radiator valve tails are often too short or rigid to bridge this gap comfortably if your pipes are close to the wall. To solve this you should use telescopic radiator valve extensions or rigid tail extensions. This allows you to bring the valve out to meet the wide radiator body without putting strain on the copper pipework.
Why is a Luxury Wall Stay specifically recommended for the Liberty 865mm 2 Column radiator instead of a standard L shaped bracket and where should it be positioned for maximum stability?
Standard L brackets are designed for slim panel radiators and often lack the reach or strength for a 220mm deep cast iron unit. A Luxury Wall Stay clamps firmly between the radiator columns and has a threaded rod that can be cut to size allowing for the deep projection of the Liberty 865mm. You must position this stay near the top of the radiator. Despite the wide base making it stable the sheer mass of the unit means that if it were to tip even slightly it could cause severe injury so a solid anchor point into masonry is essential.
How does the intricate 2 column ornate casting of the Liberty 865mm radiator affect the drying time and curing process if I choose to paint the Primer finish myself using oil based paints?
The Liberty 865mm features deep ornate scrolling on both columns which creates areas where paint can pool if applied too thickly. If you use oil based paints on this deep cast iron surface you must allow significantly longer drying times between coats compared to flat radiators. If you turn the heating on before the paint is fully cured deep inside the ornate patterns the heat will cause the solvents to evaporate too quickly leading to paint bubbling or cracking. We recommend leaving the radiator cold for at least 48 hours after painting.
The Liberty 865mm holds a massive volume of water so how does this impact the sizing of my expansion vessel in a sealed system to prevent pressure spikes during heating cycles?
The Liberty 865mm has a huge internal water capacity due to its tall and wide 2 column design holding roughly 2 to 3 liters per section. If you install multiple units the total system volume will increase drastically. A standard 8 liter expansion vessel found in many combi boilers will likely be undersized causing the pressure relief valve to discharge when the heating gets hot. You must calculate the total water content and likely install an additional external expansion vessel to handle the thermal expansion safely.
Is it technically feasible to convert the Liberty 865mm radiator to an electric only system given its high heat requirement per section and the limitations of standard heating elements?
Converting the Liberty 865mm to electric is generally not recommended for large sizes. The heat output requirement is roughly 157 Watts per section. A powerful 2000 Watt heating element would only be able to heat a maximum of 12 sections effectively. If you need a larger radiator than 12 sections for electric use you would technically need to install two separate elements one at each end which requires dual fused spurs and complex wiring making it a less practical solution than hydronic installation.
What are the safety protocols for moving the Liberty 865mm radiator upstairs considering a single 10 section block weighs over 140kg and cannot be easily maneuvered around tight corners?
You should never attempt to carry a large assembled Liberty 865mm radiator upstairs manually. The safe technical solution is to disassemble the radiator into smaller banks of 3 to 5 sections using a joining key before moving it. Each small bank will still weigh 40kg to 70kg which is manageable for two people. Once the smaller banks are in the upstairs room you can reassemble them in situ. Attempting to move the full unit risks injury and structural damage to your staircase.