Roca LAURA 20 - Hydraulic Circuit

Hydraulic Circuit
21
Expansion Vessel
Fill pressure:10.88 psi/0,75 bar.
Butyl diaphragm and nitrogen charge
Useful capacity:1.19 gal (/4.5 litres)
Heat Exchanger
6 steps in Heating:
3 for flow and
3 for return
3
Primary capacity: 0.08 gal/300 cm
3
Secondary capacity: 0.07 gal/270 cm
Domestic Cold
Water Inlet Pipe
Ø 0.55"/14 mm external
DHW sensor
DHW Outlet Pipe
Ø 0.55"/14 external
Heating Flow pipe
Ø 0.71"/18 mm external
Heating return pipe
Ø 0.71"/18 mm external
Heating sensor
Analogic gauge
Circulator
3 speed
Flow detector device
Overheating safety device
automatic reset
Set at 221ºF/105 ºC
Lack-of-water pressure switch
Safety Valve
Mini-accumulator
0.4 gal/1.5 litres
Fill point valve
Laura 20/20F wall-hung waterheaters