This OSO cylinder must be installed by a competent person and be installed in compliance with the OSO Installation and . About OSO; Environment; Awards Certifications; Contact Us. Indirect unvented cylinder with high flow rate . The cylinder is discharging cold water to the tundish. I have followed the instructions to correct this and have also had it done at the annual . For more than years, OSO has led the water heater development in.
OSO Hotwater – Super S Direct Indirect Cylinder.
The heating system is a big boiler in an upstairs cupboard called an OSO Indirect RI. Then the label says unvented water heater. THIS SUPERB BRAND NEW OSO RI 3UNVENTED INDIRECT HOT WATER CYLINDER was bought a couple of years ago as part of a development . He has an OSO unvented water heater Direct 20RD.
It’s more efficient having a direct water heater than an indirect water heater.