Engineered Systems - January 2009 - (Page 34) FLOORED! from Laars Heating Systems is a fully packaged, space-saving hydronic solution that offers 95% energy efficiency. NeoTherm is a direct vent, sealed combustion boiler that modulates with a 5 to 1 turndown. Zero clearance to combustibles and convenient top connections (horizontal or vertical direct vent) make it a good choice for tight installations. The natural gas or LP-fired boiler features an ASME stainless steel heat exchanger, integral three-speed boiler pump, and low NOx emissions. Raypak is bringing its new XTherm vertical modulating condensing boiler in sizes to 2,000 MBtuh. XTherm combines timehonored high recovery copper fin technology with cutting edge control and combustion advancements. A remarkably small footprint saves space for those cramped retrofit projects. Built to last, with industrial grade construction and user friendly serviceability, its extreme burner turndown produces up to 99% efficiency at low fire when it’s most needed. Meets even 2012 LoNOx standards. BOILER MANAGEMENT A new hybrid control from Heat-Timer Corporation called the Mini-MOD-CNC automatically mixes and matches non-condensing boiler operation and condensing The 274 and 275 are the newest Tekmar Control Systems Ltd. boiler staging controls for multiple boiler installations. They are the first standalone boiler controls featuring tekmarNet®4 (tN4) Networking technology. Both the 274 and 275 operate up to four boilers using PID staging to maxi- Fenwal's 35-72P ignites the pilot flame on LP or natural gas heating equipment, providing high-energy sparking. Tekmar's 274 and 275 boiler staging controls are designed for multiple boiler installations. mize system efficiency. The 274 operates onoff boilers while the 275 operates modulating boilers. The controls are also compatible with the Gateway 483 for remote access and monitoring via the internet. AERCO’s Boiler Management System dependable flame sensing, and automatic control of the main gas valve. A custom control sequence within the system opens the main gas valve only after the pilot flame is sensed. The unit is also suited for use in specialty applications not requiring gas valve control, and the V1 output can be used to indicate presence of the flame. BUILDING AUTOMATION / EMS Alerton exhibits its BCM-WEB, a costeffective BACtalk™ control module (BCM) Web server that automatically reads building automation system BACnet® data from Alerton’s BACtalk system and translates the data to webpages. The BCM-WEB is powered by the NiagaraAX platform and combines with other global controllers to form integrated Heat-Timer Corp.'s Mini-MOD-CNC control mixes and matches condensing and non-condensing boiler operation for maximum efficiency. AERCO's Boiler Management System is designed to maximize fuel savings in multi-unit boiler installations. boiler operation to optimize efficiency of a combined system. It also allows for mixed control of modulating and staging boilers, since condensing boilers typically have modulating burners and non-condensing boilers typically have staging or on/off burners. The control automatically switches to high mass boilers when the building heat requirements approach design loads. So high mass boilers operate when they are most efficient (at peak loads) and condensing boilers operate when they are most efficient (at part load). II (BMS II) maximizes fuel savings in multiunit installations of the company’s condensing and fully-modulating boilers. The BMS II can coordinate the operation of up to 32 AERCO Benchmark, KC1000 or Modulex boilers. In sizes ranging from 300,000 to 3 million Btuh, all of these condensing boilers feature high turndown – up to 23:1, depending on unit. By controlling multiple units with the BMS II, building owners maximize the turndown and operating efficiency of the overall boiler plant. The Fenwal mercury-free 35-72P ignites the pilot flame on LP or natural gas heating equipment, providing high-energy sparking, Alerton's BCM-WEB BACtalk™ control module reads BACnet® data and translates it to webpages. third-party communications solutions. The BCM-WEB enables users to easily create and edit schedules, alarms, and trendlogs. It can also easily Web-enable an existing IBEX system for current Alerton customers. 34 En gi neer ed S y stem s January 2009
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