HIPER II Heat Interface Unit (HIU) - HIU

HIPER II is an electronically controlled heat interface unit.

The electronics provide automatic fault diagnostics and also error warnings when the supply to the HIU is not suitable for efficient operation. These can be read on the screen, or when linked with the a remote monitoring device, can be read externally. Multiple parameters are adjustable to enable the commissioning engineers to adapt the operation of the HIU to suit the operating conditions of the heat network it is installed in. A temperature controlled keep warm function can be used or turned off if the installation does not require. To protect the pump during long summer periods where heating is not required can be programmed to run the pump for minutes to prevent sticking and formation of chemical residue on moving parts.

Features and benefits:

• Auto fault diagnostics.
• Modbus communications to report system conditions or fault conditions to a central monitor or BMS.
• Pay as you go (prepayment) switching.
• Integral shut off for pay as you go (PAYG) - no external valve required.
• Automatic closing of the control valve when power lost for anti-scald and stop unnecessary heat returns.
• Pump protection against pump sticking.
• Heating radiators or underfloor (UFH) selection.
• Optimized or constant temperature heating option.
• Viewing access to heat meter calculator by lift up panel.
• Integral flushing and bypass filter valve.
• Test ports.
• UFH slab drying cycle.
• Frost protection function.
• PWM pump speed control.
• Pressure differential and flow control by fast acting PICV with stepper actuator.
• Integral shock arrestor for cold water supply.
• Three strainers, one for each circuit.
• Filling group for heating circuit.
• Start up menu for commissioning
• Set time and date.
• Heating flow limitation setting.
• Programmable return temperature limitation control.
• Manual pump override (for test).
• Room thermostat normally OPEN or CLOSED option.
• Additional switch for adding a second pump to load a cylinder or use as an alarm.
• Optional programme to add a temperature controlled hot water storage cylinder.
• Programmable anti-legionella cycle.
• Keep warm function by temperature and time, programmable or switch off options.
• Select which plate heat exchanger to use for the keep warm function to limit scale formation.