RM Stelflow 250L Indirect Unvented Twin Coil Cylinder is a gas boiler and solar heated hot water storage, developed to give homeowners with gas boilers the opportunity to capitalise on solar thermal technologies. It not only reduces carbon footprint but also saves homeowners money. RM Cylinders has used its experience, acquired from many years in the hot water cylinder industry, to develop an efficient and high performance Unvented Stainless Steel Hot Water Cylinder. It comes with a 25 Year guarantee on the vessel and 2 Years on the cylinder components for total piece of mind.

Key Features

22mm compression fittings throughout

1mm superior duplex stainless steel

Clearly labelled unit connections

3kW incoloy immersion as standard

High efficiency heat exchanger

Butt welding for long life

50mm insulation

Integral stainless steel stat pockets

New flat bases for stability

Includes

Cold water inlet set

Tundish

T&P Relief valve

Expansion vessel

2 Port Zone Valve

Dual Thermostat

Energy Cut Out Stat

3kW Immersion heating

Technical Specification

Capacity: 250 Litre
Height: 1720mm
Diameter: 545mm
Weight(Empty): 46kg
Weight(Full): 293kg
Indirect reheat time: 25 mins
Immersion reheat time: 113 mins
Heat exchanger: 22 kW
Solar Volume: 107 Litres
Standing loss: 2.15 kWh/day