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GT 430A

High Performance Low-Temperature Return Eutectic Cast Iron Boilers

The GT 430A Series is a eutectic cast iron 3-pass, high efficiency, large net output, low  operating temperature, designed boiler. These boilers are specifically designed for oil / gas / propane firing. The GT430 A is equipped with a simplified control panel with built-in on/off limit, high limit, manual reset limit and temperature gauge.

The GT 430 A is a Three Pass Design with large combustion chamber and horizontal flue passes with fins. The heat transfer is enhanced by the fins and eutectic cast iron baffles. This body design assures:


  Efficiency up to 88%

  Low pressure drops

  Low noise level

  High thermal efficiency and heat transfer


Low Water Outlet Temperature down to 85°F with indoor/outdoor reset achieves significant energy savings by reducing stand-by fuel consumption. In addition, it’s not necessary to maintain boiler temperature between the two heating cycles, which further reduces fuel consumption and achieves excellent overall efficiency. Studies show substantial savings over retrofit boilers and over new competitive models.


Easy Cleaning with Hinged Door for burner and flue access. Doors can be hinged right or left based on your access needs. Boiler is easily cleaned and vacuumed, resulting in lower maintenance costs.

Eutectic Cast Iron boiler body provides exceptional resistance to temperature variations and thermal stress. De Dietrich’s eutectic cast iron is 30% more flexible than any competitive cast iron allowing safe low temperature operation.


Four Inch Insulation featuring reinforced fiberglass wool. De Dietrich Boilers feature double insulation of the boiler front which minimizes heat loss and allows reduced stand-by consumption and improved thermal efficiency.


Control Panel. The standard control panel supplied is designed for heating only. The panel is equipped with a boiler thermometer, on/off limit, high limit and manual reset limit. The large size permits it to be integrated easily with third party energy management systems.


Standard Equipment

  Eutectic Cast Iron Nipples

  Built-in High Limit with Manual


  Thermocord Combustion Sealed

  On/Off Limit

  Temperature Indicator

  ASME Relief Valve

  Low Water Cut-Off

  Low NOx Burners (optional)

  Factory Assembly (optional)



Low Return Water Capability

Energy Savings


Contact Us at:

DDR Americas 1090 Fountain St. N., Unit 10, Cambridge, Ontario, Canada  N3E 1A3

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