Underfloor Speed Chiller
with PICV control - single circuit
Function
The room temperature is controlled by a room thermostat connected to the PICV actuator.
The temperature from the primary circuit is lowered by a heat injection circuit down to a maximum of 30°C.
Due to the slow response time of an underfloor heating system, it is normally controlled by a weather compensated room controller with an outside sensor.
The control characteristic will normally be linear.
Benefits
- The PICV ensures balancing of the flow and eliminates the use of both static balancing valves and differential pressure control valves.
- Simple installation as only the PICV is required with no need for additional pressure or flow balancing valves.
- Low total pressure loss in the system due to simple design.
- The flow can be set directly on the PICV without the need of a manometer or a commissioning unit.
Considerations
- Minimum differential pressure required for the PICV must be available at design flow.
- A metering station can be installed if additional flow verification is required by the witnessing authority.
