1. General
Indirectly heated stainless steel tank with up to three fixed welded tube heat exchangers.
Complete with thermal insulation and cleaning opening or inspection flange (from 750 l).
Can be combined with all modern heating systems. Inspection flange can also be used to
connect additional heat sources (electric heater, etc.). Made from very high quality molybdenum
stainless steel 1.4521 with excellent resistance to corrosion. Installation-friendly construction,
equipped with connection for thermometer and temperature sensor/thermostat.
(type-dependent).
Permissible system pressure
Permissible system temperature
Thermal insulation
Side observation port
Cleaning flange on top
See type plate and datasheet for further technical data.
Safety requirements
Read these instructions carefully before commencing installation. For any additional questions,
please consult our customer service department (see contact details).
WARNING: Do not expose the insulation to open fire!
Installation, commissioning and maintenance must be carried out by specialists according to the
applicable regulations (including EN 1717, DIN 1988, EN 12828 and VDI 2035, the relevant
regulations for local distributors, national legislation and other regulations).
The chloride content of the drinking water must be less than 250 ppm. Suitable measures must
be taken to protect the tank from damage caused by underpressure. Damage that is caused by
underpressure (vacuum) is not covered by the warranty.
Protective gloves must be worn when cleaning inside the unit. The flange seal must be replaced
after cleaning. Furthermore, facilities for the secure collection and drainage of water from the
boiler must be provided to avoid water damage.
WARNING: Hot water may escape from the safety valves or when draining the boiler. Danger -
risk of scalding.
WARNING: Failure to comply with this instruction may result in damage to the mains water
boiler or the stainless steel heat exchanger.
4
ENG
Installation and operating instuctions
ENG
Installation and operating instuctions
Heating coil 40 bar
Heating coil 110 °C
Duo HLS & Duo Solar
130 °C
Up to 500 l
From 750 l
From 750 l
80.5 x 97 mm
Tank 10 bar
Tank 95 °C
graphite polystyrene (GPS)
hard foam with plastic
jacket
Polyester fleece boiler
jacket
DN 110