Weather Compensation Module 422e

Single On/Off or modulating boiler control, weather compensator for two variable temperature systems and Domestic Hot Water control (DHW).

The Weather Compensation Module 422e provides outdoor water temperature reset to a hydronic heating system based on the outside air temperature in order to maximise comfort and fuel efficiency. The 422e can operate a single on / off boiler or a single modulating boiler.

The 422e can override the weather compensated water temperature to provide Domestic Hot Water or Setpoint operations. The 422e can also operate two outdoor weather compensated water temperatures, either one boiler water temperature and a single mix water temperature, or two mixed water temperatures. To operate two mixing devices, a Mixing Expansion Module must be connected to the 422e. The single mix output can operate a floating action mixing valve or a variable speed injection pump.

Features:

• Two tN4 Buses
• Two Outdoor weather compensated Temperatures
• Single On-Off or Modulating Boiler output
• Powered Pump Outputs
• DHW (Domestic Hot Water) Operation
• Variable Speed Injection Pump
• Floating Action Valve
• Includes Sensors