Designed for use with indirect heating systems such as gas or oil boilers, the Telford Tempest 200L features a high-performance coil for rapid heat recovery and high-density polyurethane insulation to minimise heat loss. With a C energy efficiency classification, 33-minute reheat time and a lifetime cylinder shell warranty, it provides a practical hot water solution for medium-sized households.
200L Capacity
Indirect Unvented
Duplex 2304 Stainless Steel
ERP Rating C
Applications & suitability
Medium-Sized Homes
The 200-litre capacity is suited to homes and properties with moderate hot water demands.
Gas & Oil Boiler Systems
Designed for indirect heating systems using compatible gas or oil boilers.
Light Commercial Applications
Suitable for light commercial installations requiring a 200-litre indirect unvented cylinder.
Energy-Efficient Hot Water Storage
High-density polyurethane insulation helps minimise standing heat loss during hot water storage.
Key specifications
| Model |
TSMI200 |
| Nominal Capacity |
200 litres |
| Height |
1150mm |
| Diameter |
580mm |
| Empty Weight |
46kg |
| Full Weight |
240kg |
| Standing Heat Loss |
1.85 kWh/24h |
| Reheat Time |
33 minutes |
| Operating Pressure |
3 bar |
| Maximum Supply Pressure |
12 bar |
| Immersion Heater Rating |
3kW, 240V |
| Connections |
22mm compression |
| Cylinder Material |
Duplex 2304 stainless steel |
| Insulation |
High-density polyurethane |
| Safety Features |
T&P relief valve, thermostat pocket |
| Energy Efficiency Class |
C |
Installation & compatibility
The Telford Tempest TSMI200 is an indirect unvented hot water cylinder designed for compatible gas or oil boiler heating systems. It features 22mm compression connections for installation and includes a 3kW, 240V immersion heater, T&P relief valve, thermostat pocket and WRAS-approved components. The cylinder operates at 3 bar with a maximum incoming supply pressure of 12 bar.
Design & performance benefits
Duplex 2304 Stainless Steel
Manufactured from premium Duplex 2304 stainless steel for durable construction and corrosion resistance.
Rapid Heat Recovery
The high-performance coil provides a stated reheat time of 33 minutes from 10°C to 60°C.
High-Density Insulation
High-density polyurethane insulation helps reduce standing heat loss, specified at 1.85 kWh/24h.
200-Litre Storage
The 200-litre nominal capacity provides hot water storage for medium-sized households and light commercial applications.
Additional installation features
3kW Immersion Heater
A 3kW, 240V immersion heater provides an additional electric heating option.
Safety Components
Includes a 1/2" 7-bar T&P relief valve and thermostat pocket, along with WRAS-approved components.
Long-Term Warranty
Supplied with a lifetime warranty on the cylinder shell and 2-year warranty on components.
Ideal for
The Telford Tempest 200L Indirect Unvented Hot Water Cylinder is ideal for medium-sized households, residential properties and light commercial applications with moderate hot water requirements. Its Duplex 2304 stainless steel construction, 200-litre capacity, 33-minute reheat time, high-density polyurethane insulation and 3kW immersion heater make it a practical solution for indirect hot water systems using compatible gas or oil boilers.
