Case studies

We support projects ranging from enterprise corporate solutions to small businesses.

Sammamish Library

LonWorks system that provides monitoring and control of the following mechanical systems:

  • Variable air volume air handling unit with heat recovery wheel, hydronic heating/cooling and associated terminal units
  • Radiant slab heating/cooling hydronic loop with three packaged heat pumps and 10 zones
  • Finned tube radiators
  • Building exhaust fans
  • Natural ventilation using window motor actuators and conditions based on various temperature and wind speed sensors

Redmond Airport

A major terminal addition to Roberts Field Redmond Municipal Airport with control of several major HVAC systems:

  • Boiler hot water generation, distribution and flow monitoring system
  • Central refrigeration equipment, such as: chillers, cooling towers, power purification system and condenser water system
  • Several variable air volume air handling units and associated terminal units both with and without hydronic reheat
  • Radiant floor heating
  • Hydronic fin tube heaters
  • Infrared unit heaters
  • Multiple exhaust fans

    Bend Park & Recreation District Administration Building

    A 2010 Daily Journal of Commerce Top Project Finalist for Public Buildings $5 Million – $15 Million. Open system that integrates LonWorks, BACnet and Modbus protocols into one user interface:

    • BACnet communication trunk carries interface with variable frequency drives and airflow monitoring stations
    • LonWorks trunk carries variable air volume air handling units with heat recovery wheel, hydronic heating/cooling, airflow monitoring stations, carbon dioxide and humidity control
    • Fire alarm panel interface and general exhaust fan control
    • Clerestory window control with remote control/monitoring station and rain sensor
    • Modbus communication trunk to interface with boiler and chiller prepackaged controllers
    • Photovoltaic array controls to supplement domestic hot water
    • Control of 30 hydronic radiant manifold zones

      Holy Redeemer Parish

      A 2010 Daily Journal of Commerce Top Project 3rd Place Award for Private Buildings $5 Million – $15 Million. This project included controls for the following equipment:

          • Boiler hot water distribution system
          • Roof top unit with powered exhaust, hot water heat, and direct expansion cooling
          • Several heat pumps
          • Building exhaust fan controls using a variable frequency drive to maintain static pressure

      Keizer City Hall & Police Facility

      A 2010 Daily Journal of Commerce Top Project 1st Place Award for Public Buildings $15.1 Million – $50 Million. Designed for LEED® Silver certification, the building met or exceeded LEED® requirements for efficiencies in uses of water, energy, materials and operations. Siemens TALON System controls the following pieces of equipment:

          • Variable air volume air handling units
          • Several terminal units with electric stages of reheat
          • Several fan-powered terminal units with electric stages of reheat
          • Several fan coils with direct expansion cooling
          • Several building exhaust fans
          • Domestic hot water distribution