Solarbayer hygienic combination tank HSK-ÖKO-700-Plus, stainless steel tube

Hygienic stratification storage tank
HSK-ÖKO 700 PLUS, the versatile heating
centre with integrated corrugated
stainless steel pipe for legionella-safe
hot water preparation. Two large heat
exchangers for zone loading for improved
efficiency of the solar thermal system.
Integrated stratified charging tower for
improved stratification of the heating
return for higher system efficiency.
Connections for sensors, thermometers
and an electric immersion heater for
more flexibility. Double fire protection
fleece insulation ISO-B1-PLUS with 220mm
insulation thickness made from recycled
fibres (Oeko-Tex® Standard 100) incl.
floor insulation for low heat loss.
Rugged PVC jacket with stainless steel
quick-lock system for easy installation.
In order to penetrate the second
insulation layer, we recommend the
optionally available connection piece
extensions as well as the B1-Plus
thermometer set.

Technical data:
nominal volume: 683 litres
material: steel S235JR
corrosion protection outside: priming
height with insulation: 1805 mm
height without insulation: 1610 mm
tilted height: 1795 mm
diameter with insulation: 1230 mm
diameter without insulation: 790 mm
weight: 183 kg
max. operating pressure: 6 bar
max. operating temperature: 95 °C

Heat exchanger DHW (inox):
surface: 5.64 m²
capacity: 39 litres
material: Stainless steel 1.4404, DVGW
diameter: 32 mm
max. operating pressure: 8 bar
max. operating temperature: 95 °C

Heat exchangers (heating/solar):
surface top: 1.6 m²
surface bottom: 2.5 m²
capacity top: 9.7 litres
capacity bottom: 15.1 litres
max. operating pressure: 10 bar
max. operating temperature: 110 °C

Connections:
heating: 7x DN25 (1")
immersion heater*: 1x DN40 (1 1/2")
*max. installation length: 650 mm
air vent: 1x DN25 (1" IG)
sensors: 6x DN15 (1/2")
DHW: 2x DN 25 (1")
heat exchanger: 4x DN25 (1")
connections aligned in 90 degrees

Thermal insulation:
material: Polyester fibre fleece
lambda λ: 0.0368 W/(mK)
thickness: 220 mm +/- 10%
protective sheath: PVC foil silver
fire protection class according to
DIN 4102 for the complete insulation: B1
Standby energy consumption according to
DIN EN 12897:2020-05: 1,53 kWh/24h
standing heat loss: 64 W
energy efficiency class: A