The Joule Cyclone Platinum 300L Indirect Horizontal Standard C Unvented Cylinder (TCIMHI-0300NFC) is a high-capacity horizontal indirect unvented hot water cylinder designed for systems heated by a primary boiler, heat pump or solar thermal loop. With a 290 litre actual capacity, this cylinder provides substantial hot water storage while its horizontal configuration makes it suitable for installations where vertical space is limited.
Constructed from LDX 2101 stainless steel with a coated mild-steel outer casing and dense PU foam insulation, the Joule Cyclone Platinum 300L combines durable construction with effective heat retention. Its single 316L stainless-steel coil is rated at 22kW with a 0.90m² surface area, while a 3kW immersion heater provision provides an additional heating option.
290L Actual Capacity
Horizontal Design
LDX 2101 Stainless Steel
22kW Coil
Cylinder Highlights
Actual Capacity
290L
287L rated capacity
Cylinder Material
LDX 2101
Stainless steel construction
Coil Rating
22kW
316L stainless-steel coil
Heat Loss
2.21 kWh/24h
Supplied product data
High-Capacity Horizontal Unvented Cylinder
The Joule Cyclone Platinum 300L Horizontal Standard C is an indirect unvented cylinder designed for use with a primary heating system. The supplied specifications identify its use with boilers, heat pumps and solar thermal systems.
With its horizontal orientation, the cylinder is suited to installations where conventional vertical cylinders are difficult to accommodate. It can be considered for under-bench, cupboard and compact plant-room installations where the available space favours a horizontal configuration.
LDX 2101 Stainless-Steel Construction
The cylinder is constructed from LDX 2101 stainless steel and features a coated mild-steel outer casing. This construction provides the specified stainless-steel cylinder body with a protective outer finish.
Thermal insulation is provided by dense PU foam, with the supplied technical data specifying a heat loss of 2.21 kWh/24h. This helps retain stored hot water between heating cycles.
316L Stainless-Steel Heat-Exchange Coil
A single 316L stainless-steel coil provides the primary heat-exchange function. The coil has a 22kW rating and a surface area of 0.90m², providing the specified heat-transfer characteristics for the indirect system.
Heat-Exchange Specification:
1 × 316L stainless-steel coil · 22kW rating · 0.90m² surface area · 3.5 bar maximum primary pressure.
Immersion Heater Provision
The Joule Cyclone Platinum 300L includes provision for one immersion heater, specified at 3kW @ 230V. This provides an additional heating provision alongside the cylinder's indirect primary coil.
Pressure & Operating Specifications
The supplied technical data specifies a maximum mains water pressure of 10 bar and an operating pressure of 7 bar. The coil has a listed maximum primary pressure of 3.5 bar and a listed coil resistance of 63 bar. The supplied safety valve temperature is 90°C.
Ideal Applications
- Larger residential homes requiring substantial hot water storage.
- Flats and apartments where significant hot water capacity is required but vertical space is limited.
- Under-bench, cupboard or compact plant-room installations.
- Systems heated by boilers, heat pumps or solar thermal collectors.
- Renovation and retrofit projects where a horizontal cylinder is more suitable than a vertical unit.
- Small commercial properties such as guest houses and staff facilities requiring an indirect hot water supply.
Product Specifications
| Brand |
CYCLONE / Joule Cyclone Platinum |
| Model |
TCIMHI-0300NFC |
| Capacity |
287L rated / 290L actual |
| Product Group |
Horizontal |
| ERP Type |
Indirect Unvented |
| Cylinder Material |
LDX 2101 Stainless Steel |
| Outer Casing |
Coated Mild Steel |
| Thermal Insulation |
Dense PU Foam |
| Immersions |
1 |
| Immersion Specification |
3kW @ 230V |
| Heat Exchangers |
1 |
| Coil Material |
316L Stainless Steel |
| Coil Rating |
22kW |
| Coil Surface Area |
0.90m² |
| Coil Max Primary Pressure |
3.5 bar |
| Coil Resistance |
63 bar |
| Maximum Mains Water Pressure |
10 bar |
| Operating Pressure |
7 bar |
| Safety Valve Temperature |
90°C |
| Empty Weight |
53kg |
| Full Weight |
353kg |
| Heat Loss |
2.21 kWh/24h |
| Tested To |
BS EN 12897:2016 |
| Warranty |
1 year |
Technical Data Note:
The supplied source data lists foam thickness as 0mm and operating temperature as 0°C. These values have been retained as supplied in the specification data rather than interpreted or altered.
Frequently Asked Questions
What is the capacity of the Joule Cyclone Platinum 300L cylinder?
The cylinder has a 287L rated capacity and an actual capacity of 290L, according to the supplied product specifications.
Is the Joule Cyclone Platinum 300L cylinder horizontal?
Yes. The TCIMHI-0300NFC is a horizontal indirect unvented cylinder, making it suitable for installations where vertical space is limited.
What is the Joule Cyclone Platinum 300L made from?
The cylinder is manufactured from LDX 2101 stainless steel and has a coated mild-steel outer casing with dense PU foam insulation.
What type of coil does the 300L cylinder have?
It has one 316L stainless-steel coil rated at 22kW, with a surface area of 0.90m².
Does the cylinder have an immersion heater provision?
Yes. The supplied specification lists one immersion heater provision rated at 3kW @ 230V.
What is the warranty on the Joule Cyclone Platinum 300L?
The supplied product information specifies a 1-year warranty.
High-Capacity Horizontal Hot Water Storage
The Joule Cyclone Platinum 300L Indirect Horizontal Standard C Unvented Cylinder combines a 290L actual capacity with LDX 2101 stainless-steel construction, a 22kW 316L stainless-steel coil and 3kW immersion heater provision. Its horizontal design makes it suitable for larger residential and selected small commercial installations where substantial hot water storage is required without relying on a conventional vertical cylinder arrangement.
