Hot water Tanks and Boilers > HR 321

Product description (*)

Stainless steel hot water indirect water heater. A Duplex version for highly aggressive water (DIN 1.4462) is also available
Elegant lacquered steel covering with slightly structured red paint
Rockwool insulation 60 mm thick
M0 Fire resistance class
Control panel with thermometer and thermostat
Inlet and outlet (primary) connection at the back


Main characteristics
Capacity (total) (L) : 318
Peak flow at 40 °C (L/10') : 922
Max. absorbed heat (Heat source: boiler) (kW) : 76
Dim. - Width or Diameter (w/o conn.) (mm) : 630
Dim. - Depth (w/o conn.) (mm) : 630
Dim. - Height (w/o conn.) (mm) : 1595

Design characteristics

Legend (*)
Duplex DIN 1.4462 stainless steel inner tank
Steel outer tank
Rigid polyurethane foam insulation
Heating fluid inlet (primary)
Heating fluid outlet (primary)
Cold water inlet (secondary)
Domestic hot water outlet (secondary)
Control thermostat
Control thermometer
Control thermostat bulb
Bulb for control thermometer
Air vent
Metal casing
DHW recirculation loop

Technical specifications (*)
CharacteristicsValue
Capacity (primary) 55 L
Capacity (total) 318 L
Heating surface DHW tank 2,65 m²
Pressure drop (primary) 81 mbar
Primary flow 6900 L/h
Connection - primary (female) 2" Ø
Connection - DHW (male) 1"1/2 Ø
Connection - re-circulation / safety valve 1"1/2 (M) Ø
Max. operating temperature 90 °C
Max.service pressure heating (primary) 4 bar
Max.service pressure (DHW) 10 bar
Dim. - Width or Diameter (w/o conn.) 630 mm
Dim. - Depth (w/o conn.) 630 mm
Dim. - Height (w/o conn.) 1595 mm
Weight (empty) 160 Kg