Part I of this series introduced the lead/lag control strategy as it applies to parallel pump operation and discussed the need for identifying the designer’s intent for a particular system. Part II ...

i. Lead secondary chilled water pump will be enabled anytime the chilled water (CHW) system is enabled and will remain enabled for 30 minutes after the CHW system is disabled. b. Pump speed control i.

Travelling long distances can be an adventure, yet there is a negative side effect that people wish to avoid; the jet lag. This sleeping disorder or condition is actually a temporary form of sleep ...