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Greenstar Combi Gas Boilers

"Combi" (combination) unit with space heating and integrated water heating in one highly efficient' compact unit. With special insulation to ensure ultra quiet operation and the exclusive keypad safety lock feature to prevent unwanted tampering with heating controls' this unit is the ideal "green" upgrade for detached & terraced houses and is also suitable for apartments.

  • Aluminum-Silicon heat exchanger delivers high efficiency - 96.8% with low temperature applications (94.3% AFUE)
  • Low NOx emissions ahead of 2012 SCAQMD regulations
  • Simple' intelligent control options optimize efficiency and fuel consumption
  • Low electrical consumption when the boiler is in standby mode
  • Electronic Ignition
  • Available as NG or LP
  • Special insulation ensures ultra-quiet operation
  • Compact dimensions and built-in frost protection offer flexibility for location of installation
  • ECO mode for energy saving fuel consumption
MODELInput MBtuHOutput MBtuHAFUEDimensions
HxWxD
Water Content
Gal.
Weight
Lbs.
SUPPLY / RETURN CONNECTIONVENT SIZEDHW FLOW MAX
ZWB28-3 Greenstar Combi 100100.8 89.4 96.0 33.5 x 17.4 x 13.9 0.95 110 122.65 GPM
ZWB42-3 Greenstar Combi 151 151.6 134.4 94.3 33.5 x 17.4 x 13.9 0.95 110 124.0 GPM

Warranty Information

  • Heat Exchanger - Lifetime Warranty
  • All Parts for 60 months -
  • Limited Labor for 60 months -

Available Documents

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An efficient & reliable comfort system begins with a good plan.