• News
• Products
• Applications
• References
• Technical info
• Contact
• About us

Frese OPTIMIZER Twin Flow Controller

2-pipe heating and cooling systems

The Frese OPTIMIZER Twin Flow Controller is used in 2 pipe heating and cooling systems.

The controller automatically switches between heating and cooling and modulates the flow via the valve to meet the current load conditions.

The Frese OPTIMIZER Twin Flow Controller can also be used to control the media supply and return temperatures difference to optimize the pumping energy consumption.

Application

The Frese OPTIMIZER Twin Flow Controller is used in 2-pipe heating and cooling systems to:

• Control the flow to the terminal unit or in a circuit
• Detect if the system operates in the heating or in the cooling mode
• Switch between the sizing flow for cooling and for heating
• Modulate the flow for cooling and heating
• Detect the temperature difference between the supply and return lines
• Secure operation with at least the minimum temperature difference between the supply and return lines

Benefits

• Only one data point for the BMS needed
• Complete solution. No balancing valves required in the System
• Energy saving through optimum pressure independent flow limitation and regulation
• Modulating control for both cooling and heating
• Less time spent in selection and sizing. Only design flow and minimum differential pressure required
• Full comfort without recommissioning should the system be extended during the construction phase
• Compact solution with small space requirements
• Silent operation when modulating heating and cooling
• No time consuming commissioning required

Features

• The pre-setting function of the PICV has no impact on the stroke - full stroke modulation at all times, regardless of the pre-set flow
• The constant differential pressure across the modulatingcontrol component of the PICV guarantees 100% authority
• Dynamic balancing eliminates overflows, regardless of fluctuating pressure conditions in the system
• Achieves high flows with minimal required differential pressure due to advanced design of the PICV • Higher pre-setting precision due to stepless analogue scale of the PICV
• Control unit with 0-10 V DC feedback signal for modulating valve opening
• ΔT control for optimal energy transfer
• Option of connecting a dew point sensor to the controller to avoid condensation in the system