The Outdoor NeoTherm is a direct vent, sealed combustion, condensing boiler or volume water heater designed specifically for outdoor installations. Company officials said these systems meet or exceed all applicable ANSI testing demands for outdoor use, and reach thermal efficiencies as high as 97%.
Lochinvar’s KNIGHT® wall mount fire tube boiler ranges from 55,000 to 399,999 Btuh. Select models provide up to 10:1 turndown, top and bottom water connections, and an upgraded SMART SYSTEM Control®. The refined KNIGHT wall mount fire tube boiler models WHN56-286 offer 95% AFUE while the WHN400 is rated with 94.4% Thermal Efficiency, Low-NOx emissions and a fully modulating burner.
Carrier is offering an electronically commutated motor (ECM) direct-drive fan option for the Aero® 39M commercial air handler product line. According to company officials, adding the new ECM fan option enables customers to further improve the system’s energy efficiency. Onboard electronics determine the position of the rotor, which then provides an electronic pulse to actuate the motor windings.
Johnson Controls says its new SMART Equipment Controllers (SEC) use a smart mobile device interface that gives engineers the flexibility to easily access their Johnson Controls water-to-air water source heat pump controls through any Wi-Fi-enabled device and any internet browser. The controllers feature an onboard backlit local display with pushbuttons and BACnet Automatic Discovery support that enables integration into any BACnet BAS.
HEMCO says its new ModuLab can achieve strict environmental control by incorporating HEPA filtration to regulate air quality ranging from Class 1,000 to 100,000. Modulab can be used in conjunction with dust collectors to control room dust levels. Precise temperature control can be maintained with optional modified cooling systems for lower temperature requirements. Humidity can be regulated with desiccant systems available for lower humidity requirements.
Retrieving every last bit of performance from the system while stopping short of the surge line is no small feat. Dig into sizing, tower selection, chilled water loads and stability, and condenser water management to leave no efficiency stone unturned.
Finding the holy grail of centrifugal chiller optimization for all operating conditions is hard, if not impossible. This article will talk about the requirements of most chiller systems and means of control for condenser optimization.