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GT 530A/AE Plus

High Performance Low-Temperature Return Eutectic Cast Iron Boilers

Low Return Water Capability

Maximizes Energy Savings


The GT 530A/AE Plus Series of Eutectic Cast Iron boilers incorporates a heat exchanger manufactured from TP316L stainless steel to achieve one of the highest efficiencies in the hydronic boiler market. The stainless steel economizer is specifically designed for the GT 530A/AE Plus heat exchanger to assure the highest performance and longest life expectancy of a De Dietrich boiler. The ability to have #2 fuel oil and/or propane as a backup fuel is a feature that enables end users the flexibility of fuel choice without compromising performance. With firing rates up to 8,190 MBH, the GT 530AE Plus is one of the largest

high efficiency boilers in the hydronic heating market.


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 control panel supplied is designed for heating applications. 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 Seal

  CSA/CSD-1 Compliant Controls and accessories

  Low NOx Burners (optional)

  Factory Assembly (optional)

  BACnet (optional)

  Consult your local De Dietrich representative for

    a list of available burners.


Low Return Water Capability

Energy Savings

The GT 530A/AE-Plus is a Four Pass Design with a generous 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 87.8%

  Low water pressure drops

  Low noise level

  High thermal efficiency and heat transfer


Low Water Outlet Temperature down to 105°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






Contact Us at:

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

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