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High-Efficiency Water Heating, Air Conditioning & Heating Systems


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88 Total Reviews /files/foerst-logo-9200.png845-790-5013$PO Box 1134, Wappingers Falls NY



G315 Series Oil Boiler

The boiler sections are assembled with beveled, surface profiled push nipples for long, trouble-free watertight operation. Boiler flue ways are manufactured to be gas tight with tongue and groove section design and elastic, high temperature resistant sealing rope. This seal is fully pressed into the groove during assembly to allow positive pressure operation. A permanent dry door gasket ensures repeated positive sealing of the full swing burner door. Because flue gases cannot escape through the seams between boiler sections, the boilers are able to retain heat more efficiently.

  • High Efficiency - AFUEs Above 88%
  • Thermostream Design Eliminates Thermal Shock
  • Flexible, Corrosion Resistant GL-180M Cast Iron
  • 350 to 3,982 MBH Output
  • Clean combustion through low combustion chamber loading
  • Suitable for operation with oil or gas
  • Easy handling through delivery of the boiler block in sections
MODELOutput MBtuHIBR MBtuHFiring Rate GPHAFUEWater Content Gal.HxWxDWeight. Lbs.
G315-5350.0 304.0 0.00 86.8 37.80 40.75 x 34.75 x 38.25 1197
G315-6454.0 395.0 0.00 86.9 45.20 40.75 x 34.75 x 44.5 1391
G315-7559.0 486.0 0.00 87.0 52.60 40.75 x 34.75 x 50.75 1585
G315-8663.0 577.0 0.00 87.1 60.00 40.75 x 34.75 x 57 1779
G315-9768.0 668.0 0.00 87.1 67.40 40.75 x 34.75 x 63.5 1973

Warranty Information

  • Heat Exchanger - Limited Lifetime Warranty on Cast Iron Heat Exchanger in Residential Settings
  • All Parts for 12 months -

Available Documents