North Building Technologies

The McQyRTU interface links the McQuay International's range of Roof-Top Units to North's Extensible Model. There are eight versions of the Rooftop software to provide different control options. Variable Air Volume (VAV) units are controlled to maintain a desired supply air temperature. The airflow through the unit is varied in response to the requirements of VAV terminal units to maintain the desired space conditions. The return vanes are controlled to maintain the space static pressure either by fan tracking or by direct building static pressure control. Constant Air Volume (CAV) units supply a constant volume of air to the space. Units with Zone Control maintain a desired zone temperature by varying the temperature of the supply air. Units with Supply Air Temperature Control maintain the supply air temperature within defined limits.

Supported Range

VAV One Stage Heat/Fan Tracking
VAV One Stage Heat/Building Static
VAV Modulating Heat/Fan Tracking
VAV Modulating Heat/Building Static
CAV Return Air/Zone Control
CAV Return Air/SAT Control
CAV 100% OAT/Zone Control
CAV 100% OAT/SAT Control

Platforms

The McQyRTU interface is available on the following North platforms:

• Compass
• ObSys

Product Codes

CP/MCQYRTU/232	Compass Point with McQuay RTU interface
OSM/MCQYRTU	OSM available with all ObSys editions

Documentation

Search the North e-Library for more information and technical documentation.

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