The Joule Cyclone Platinum Unvented 300L Indirect Tall Cylinder (TCEMVI-0300LFD) is a high-capacity stainless-steel hot water cylinder designed for indirect unvented heating systems. With a 300-litre nominal capacity and 290-litre actual usable volume, it features a 23kW primary coil for consistent hot water heating up to 60°C. Its tall profile makes it suitable for large homes and light-commercial installations where sufficient vertical installation space is available.
Constructed from corrosion-resistant LDX 2101 stainless steel, the cylinder combines a 316L stainless steel heat exchanger with dense PU foam insulation and a coated mild-steel outer casing. With a 3kW immersion heater option, 10 bar maximum mains pressure and a 7 bar operating pressure, it provides a high-capacity stored hot water solution for demanding applications.
300L Capacity
23kW Primary Coil
7 Bar Operating Pressure
1-Year Warranty
Actual capacity
290 litres
Max mains pressure
10 bar
Applications & suitability
Large Residential Properties
300-litre nominal storage capacity for homes with multiple bathrooms and higher hot water demand.
Light Commercial Applications
Suitable for small commercial premises requiring reliable stored hot water capacity.
Tall Plant-Room Installations
Designed for installations where sufficient vertical space is available for a taller cylinder profile.
Boiler & Heat Pump Systems
The 23kW 316L stainless steel primary coil is designed for indirect heating systems.
Key specifications
| Model |
TCEMVI-0300LFD |
| Brand |
CYCLONE |
| Capacity |
300 litres (actual 290 litres) |
| Item category code |
IndirectUnvented |
| Product group code |
CYCLONE |
| Product type |
Stainless Indirect Cylinder |
| Cylinder material |
LDX 2101 stainless steel |
| Outer casing |
Coated mild steel |
| Thermal insulation |
Dense PU foam |
| Foam thickness |
0mm |
| No. of immersions |
1 |
| Immersion specification |
3kW @ 230V |
| No. of heat exchangers |
1 |
| Coil material |
316L stainless steel |
| Coil 1 rating |
23kW |
| Coil 1 surface area |
0.77m² |
| Coil 1 maximum primary pressure |
3.5 bar |
| Coil 1 resistance |
0.08 bar |
| Maximum mains water pressure |
10 bar |
| Operating pressure |
7 bar |
| Operating temperature |
60°C |
| Safety valve temperature |
90°C |
| Tested to standard |
BS EN 12897:2016 |
| Heat loss |
2.21 kWh/24h |
| Unit weight empty |
64kg |
| Unit weight full |
360kg |
| Warranty |
1 year |
Installation & compatibility
The Joule Cyclone Platinum 300L is an indirect unvented cylinder incorporating a single 316L stainless steel heat exchanger rated at 23kW. The coil has a 0.77m² surface area, a maximum primary pressure of 3.5 bar and a stated resistance of 0.08 bar. A single 3kW immersion heater at 230V provides an additional electric heating option.
Design & performance benefits
High-Capacity Storage
300-litre nominal capacity with 290 litres of actual stated volume for higher hot water storage requirements.
23kW Primary Coil
A 316L stainless steel heat exchanger with a 23kW rating and 0.77m² surface area provides indirect heating capability.
LDX 2101 Stainless Steel
The cylinder uses LDX 2101 stainless steel construction for corrosion-resistant hot water storage.
Dense PU Insulation
Dense PU foam insulation is specified alongside a stated heat loss of 2.21 kWh/24h.
Additional installation features
High Mains Pressure Capability
The cylinder has a maximum mains water pressure rating of 10 bar and a 7 bar operating pressure.
Electric Boost Option
A single 3kW immersion heater compatible with 230V provides an electric heating option.
BS EN 12897:2016
Tested to BS EN 12897:2016, with a stated safety valve temperature of 90°C.
Ideal for
Large Homes
High-capacity 300-litre storage for larger properties with substantial domestic hot water demand.
Light Commercial Premises
Suitable for guesthouses, salons, offices and similar smaller commercial applications requiring stored hot water.
Renovation & Replacement
Suitable for replacement projects where a tall indirect unvented cylinder can be accommodated.
Higher-Pressure Systems
A suitable option for installations requiring a stainless-steel cylinder with a 10 bar maximum mains pressure rating.
The Joule Cyclone Platinum Unvented 300L Indirect Tall Cylinder (TCEMVI-0300LFD) combines high-capacity 300-litre storage with a 23kW 316L stainless steel primary coil, LDX 2101 stainless-steel construction and dense PU foam insulation. With 290 litres of actual stated capacity, 10 bar maximum mains pressure, 7 bar operating pressure and a 3kW immersion option, it is suited to large residential and light-commercial applications where a tall cylinder profile can be accommodated.
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