HIU Compact wall substations

RANGE AND PERFORMANCES

• 36 models for district heating and DHW with hot and superheated water networks.
• Heating power 30-150 kW.
• Direct DHW power 30-180 l/min.
• Combi model: instantaneous DHW production 13 at 30 liters/min.

MANAGEMENT

• Dedicated software for easy-to-use individual metering and remote control. Integration with existing or superior remote control systems.
• Operator panel with remote-controllable chronothermostat function up to 30 meters away with integrated ambient temperature sensor.
• Setting and regulation of heating water and DHW temperature via configurable PID controller.
• Compensation function for heating water temperature based on outside temperature.
• Prepared for remote reading and remote control via unified standard Meter-bus protocol or other unified protocol.
• Limitation of flow rate, power, and primary return temperature, even simultaneously

SPECIAL FUNCTIONS AND SERVICES

• Legionella prevention function.
• Anti-scale function.

CONSTRUCTION

• Extremely compact, easy to fix on the wall.
• Very sturdy structure, AISI 316 inox pipe 2 times TIG welded.
• Powder coating steel frame.
• High energy efficiency thanks to complete thermal insulation.
• Removable front cover for easy maintenance, with the possibility to apply a security unified lock/sealing.
• Mechanical design temperature: 135°C.
• Mechanical design pressure on primary circuit PN25.
• Mechanical design pressure on secondary circuit PN10.
• Nominal thermal conditions on primary circuit: 90/65°C (hot water network).
• Nominal thermal conditions on primary circuit: 115/65°C (superheated water network).
• Nominal thermal conditions on DHW circuit: 10/45°C
• Valve on the primary circuit already mounted on substation.
• Safety pressure switch.
• Block thermostat with manual reset.
• Regulating thermostat with automatic reset.
• Ultrasonic heat meter complies with the legislation EN1434/MID.
• Possibility to apply a booster pump or a pump system.
• CE/PED approved through ISPESL with redundancy of safety in addition to those required by the rules.
• Amarc DHS components supplier: ALFA LAVAL (heat exchangers) | DANFOSS (Control valves, actuators, and regulators ) SIEMENS (heat meters, regulation valves, actuators) | KAMSTRUP (heat meters) | BRANDONI (valves and check valves) | NAVAL OY (ball valves) | IVR (shut-off valves) | CALEFFI/WATTS (security valve) | WILO (pumps) | HONEYWELL (actuators, two-way and three-way control valves).