When the only energy source available is electricity, a Direct pattern cylinder is the ideal product. The domestic water is “directly” heated by the immersion heaters which sit inside the cylinder, however, the heat-up and recovery times take longer than an Indirect cylinder. Manufactured and fully approved to the latest British Standard specification BSI566:2002 (Part L).
Insulation is generally 35mm – 50mm thickness . Add 70-100mm to the listed diameter to allow for insulation
