"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.
Each unit features an ASME approved Al-Si heat exchanger constructed of advanced Magnesium-Aluminum-Silicon alloy – offering increased flexibility versus traditional stainless steel. They are equipped with highly durable heating blocks that are corrosion resistant and designed to optimize clean burning combustion over an extra large surface area, which requires minimal servicing and reliance on spare parts during the boiler’s lifetime.
All Greenstar Combi boilers are equipped with a high-strength stainless steel secondary exchanger and burner with double passage – ensuring consistent temperature output based on demand. The DHW hot water temperature control limit of 140°F helps prevent scale build-up within the heat exchanger.
A full modulating fan automatically increases or decreases its speed according to the amount of gas coming into the boiler depending on the heat demand. This process, called modulation, prevents the boiler from either having too little or too much air in the unit for optimal combustion – ensuring high efficiency.
|Gas-Fired Floor Standing Combi Condensing Boilers||Greenstar Combi FS 100|
|Model Number||KWB 28-3|
|Heating Capacity [MBH]||91|
|Net Rating Water [MBH]||79|
|DHW Flow Max (ΔT at 72°). GPM||2.65|
|Gas-Fired Floor Standing Combi Condensing Boilers||Greenstar Combi FS 131|
|Model Number||KWB 35-3|
|Heating Capacity [MBH]||118|
|Net Rating Water [MBH]||103|
|DHW Flow Max (ΔT at 72°). GPM||3.2|
|Gas-Fired Floor Standing Combi Condensing Boilers||Greenstar Combi FS 151|
|Model Number||KWB 42-3|
|Heating Capacity [MBH]||135|
|Net Rating Water [MBH]||117|
|DHW Flow Max (ΔT at 72°). GPM||4.0|