A.O. Smith GW/GWO-750 User Manual

 

PG 1 OF 4

Revised November 2008 

Commercial Gas Boilers

84% efficient, low-nox hot water supply boilers

features

A. O. Smith Genesis® boilers offer everything you could ask for in a non-condensing boiler. 
They provide the highest possible 84% thermal efficiency, outstanding venting flexibility, 
space-saving stackable design and a new, advanced Energy Management Control (EMC) system. 
Genesis models are available for installation indoors (GW Series) or outdoors (GWO Series).

new eMc-5000 enerGy ManaGeMent control

  Patent pending

  Controls every electrical boiler function, including pump operation and main burner ignition, 

delivers precise temperature management, with ±1º accuracy

  Display panel shows current operating status and fault readings in easy-to-understand 

English instead of confusing numeric codes

  Display also shows temperature setpoints, outlet temperature, current inlet/outlet 

differential ( T) and tank temperature

  Help screens assist in boiler setup and explain control options

  Included remote temperature sensor when mounted in the storage tank 

allows the tank temperature to be set and monitored at the boiler

two-staGe Gas firinG systeM

  Twin gas valve firing system prevents short cycling and ensures 

smooth operation, saves fuel and extends boiler life

  Prevents short cycling when demand is low, delivers maximum output when 

demand is high

low-nox operation

  Meets or exceeds Texas and California SCAQMD Rule 1146.2 air quality standards

copper finneD-tube heat exchanGer

  Designed for maximum durability and serviceability

  Copper is lightweight for easier handling and immune to thermal shock

  Removable headers allow easy inspection of waterways

space-saVinG DesiGn

  Smaller footprint versus other horizontal copper fin-tube boilers

  Optional stack rack allows one unit to be stacked on top of another, doubling output within 

the footprint of a single unit

Meets ashrae/iesna 90.1-2004

fiVe-year heat exchanGer liMiteD warranty

  For complete information, consult written warranty or contact A. O. Smith