Joule Cyclone Platinum 400L Twin Coil Solar Cylinder Standard C (TCEMVS-0400LFC) is a high-capacity indirect unvented hot-water cylinder designed for solar thermal and auxiliary heating systems. It has a listed capacity of 400 litres and an actual capacity of 390 litres, with two stainless-steel heat-exchange coils and one immersion heater port for electric backup.
The specification lists an LDX 2101 stainless-steel inner cylinder, a coated mild-steel outer casing and dense PU foam insulation. Standing heat loss is stated as 2.45 kWh/24h, tested to BS EN 12897:2016. The empty unit weighs 74kg and its stated full weight is 476kg. Confirm dimensions, access, clearances and system compatibility with a suitably qualified installer before purchase.
400L Listed Capacity
Twin Stainless-Steel Coils
390L Actual Capacity
Solar + Auxiliary Heating
At a Glance
Cylinder Type
Indirect Unvented
Twin-coil solar cylinder
Capacity
400 litres
Actual capacity: 390L
Heat Exchangers
2 × 316L coils
22kW and 30kW
Heat Loss
2.45 kWh/24h
Tested to BS EN 12897:2016
About the Joule Cyclone Platinum 400L Twin Coil Solar Cylinder
This indirect unvented cylinder stores domestic hot water and transfers heat from two primary sources, such as solar thermal collectors and an auxiliary heating system. Its two 316L stainless-steel coils each have a listed surface area of 0.77m², with ratings of 22kW and 30kW. A single immersion heater port is specified for a compatible 3kW, 230V immersion heater. Have a suitably qualified installer confirm system design, pressure requirements and electrical compatibility.
Key Features
Twin Heat-Exchange Coils
Two 316L stainless-steel coils provide separate heat-exchange circuits, rated at 22kW and 30kW.
Stainless-Steel Inner Cylinder
The inner cylinder is specified as LDX 2101 stainless steel.
400-Litre Listed Capacity
The listed capacity is 400 litres, with an actual capacity of 390 litres.
Immersion Heater Port
One immersion heater is specified, compatible with a 3kW heater at 230V.
Insulated Construction
Dense PU foam insulation and a coated mild-steel outer casing are specified.
Specified Heat Loss
Standing heat loss is listed as 2.45 kWh/24h, tested to BS EN 12897:2016.
Important Installation Guidance:
Installation and commissioning should be carried out by a suitably qualified and competent person in accordance with the manufacturer’s instructions and applicable regulations. Confirm the cylinder’s dimensions, access route, service clearances, electrical requirements, operating pressures and system compatibility before installation.
Key Specifications
| Product |
Joule Cyclone Platinum 400L Twin Coil Solar Cylinder Standard C |
| Model |
TCEMVS-0400LFC |
| Product Group Code |
SOLAR |
| Item Category Code |
Stainless |
| ERP Type |
IndirectUnvented |
| Listed Capacity |
400 litres |
| Actual Capacity |
390 litres |
| Cylinder Material |
LDX 2101 stainless steel |
| Outer Casing |
Coated mild steel |
| Thermal Insulation |
Dense PU foam |
| Foam Thickness |
0 (as supplied in the specification) |
| Empty Weight |
74kg |
| Full Weight |
476kg |
| Number of Immersions |
1 |
| Immersion Specification |
3kW at 230V |
| Number of Heat Exchangers |
2 |
| Coil Material |
316L stainless steel |
| Coil 1 Rating |
22kW |
| Coil 2 Rating |
30kW |
| Coil Surface Area |
0.77m² each |
| Maximum Primary Pressure |
3.5 bar per coil |
| Coil 1 Resistance |
0.06 bar |
| Maximum Mains Water Pressure |
10 bar |
| Operating Pressure |
7 bar |
| Operating Temperature |
60°C |
| Safety Valve Temperature |
90°C |
| Heat Loss |
2.45 kWh/24h |
| Test Standard |
BS EN 12897:2016 |
| Warranty |
1 year |
Who Is This Cylinder For?
The Joule Cyclone Platinum 400L Twin Coil Solar Cylinder is intended for systems that need substantial stored hot water and heat input from two primary circuits, such as solar thermal collectors and an auxiliary heat source. Its capacity may suit larger homes, multi-bathroom properties or light-commercial applications, subject to hot-water demand and system design. Have an installer confirm the required capacity, available space, full operating weight and compatibility with the connected heat sources.
Frequently Asked Questions
What is the cylinder’s capacity?
The listed capacity is 400 litres, and the specified actual capacity is 390 litres.
What are the two coils for?
The twin coils allow heat transfer from two primary circuits, such as solar thermal and auxiliary heating. Their listed ratings are 22kW and 30kW.
Does it have an immersion heater?
The specification lists one immersion heater, rated at 3kW and 230V.
What is its stated heat loss?
The listed standing heat loss is 2.45 kWh/24h, tested to BS EN 12897:2016.
Twin-Coil Solar Hot-Water Storage
The Joule Cyclone Platinum 400L Twin Coil Solar Cylinder Standard C combines a 390-litre actual capacity, two stainless-steel heat-exchange coils and a port for one 3kW immersion heater. Confirm installation space, operating pressures and system suitability with a qualified installer before ordering.
