South 405 Place
Project:
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53,553 ft2 3-story Building
- 17,274 ft2 "open" Parking Garage
Site Location:
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Renton, WA
Team:
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Owner - John C. Radovich Development Company
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Architect - LPN Architects
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GC - Foushee
- HVAC - PSF Mechanical, Inc.
Major Tenants:
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Universal Underwriters Group
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Pacific Laser Vision
-
University of Phoenix
- Prudential Insurance Company
HVAC Systems:
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Medium temperature variable air volume (VAV) systems utilizing one Mammoth 78 series Ultraline rooftop unit
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Series type VAV boxes with silent mercury contactors (Terminal boxes use electric heat)
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Communicating electronic ddc system with modem remote access
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Ceiling transfer fan for elevator machine room exhaust
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Raised curb sound attenuating system at rooftop unit
- Evaporatively cooled condensing sections for high efficiency
Energy Saving Strategies:
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Variable speed (inverter) driven supply and relief fans for Mammoth Ultraline unit result in both energy savings and very accurate control of duct and building static pressure
- Direct digital controls provide accurate temperature control, minimizing drift and overshoot: Heating signals are ‘pulsed’ to exactly match the load
System Benefits/Goals:
-
Variable speed (inverter) driven supply and relief fans for Mammoth Ultraline unit result in both energy savings and very accurate control of duct and building static pressure
- Direct digital controls provide accurate temperature control, minimizing drift and overshoot: Heating signals are ‘pulsed’ to exactly match the load


