Residential Boilers - Oil Boilers Series EC/ECT™ Boiler

The Series EC/ECT™ is a residential, oil-fired boiler for steam or hot water systems. The large water content of the boiler makes it ideal for steam and large volume hot water applications. Optional tankless coils can be added for all your domestic hot water needs. A full, non-prorated lifetime warranty is included for all water boilers and a limited 10-year warranty covers the heat exchanger of steam boilers.




Product Details:

Type: Residential
Construction: Cast Iron
Fuel: Oil-Fired
Input: 105 to 420 MBH
Output: 91 to 347 MBH
Venting: Natural Draft
Trim: Water or Steam
Combustion: Flame Retention Burner


AHRI Member

Series EC/ECT™ Water Content, Gallons
Model Number Input Output5, MBH Net Ratings4 AFUE, % Thermal Efficiency6, % Combustion Efficiency,%
GPH1 MBH Water Steam Steam, sqft Steam, MBH3 Water, MBH2
Water Steam Water Steam
EC/ECT-03 0.75 105 92 91 283 68 80 86.6 85.4 17.40 14.16
EC/ECT-03 1.00 140 121 120 375 90 105 85.3 84.4 17.40 14.16
EC/ECT-03 1.20 168 144 142 446 107 125 84.0 82.9 17.40 14.16
EC/ECT-04 1.25 175 152 151 471 113 132 86.1 85.1 21.72 17.28
EC/ECT-04 1.50 210 181 180 563 135 157 85.2 84.5 21.72 17.28
EC/ECT-04 1.75 245 209 208 650 156 182 84.5 83.8 21.72 17.28
EC/ECT-05 1.75 245 214 212 663 159 186 86.2 85.6 26.04 20.40
EC/ECT-05 2.00 280 241 240 750 180 210 85.2 84.6 26.04 20.40
EC/ECT-05 2.40 336 279 279 872 209 243 83.0 85.1 26.04 20.40
EC/ECT-06 2.75 385 321 321 1004 241 279 83.3 84.4 30.36 23.52
EC/ECT-06 3.00 420 347 347 1083 261 302 82.5 83.7 30.36 23.52

† All chimneys are 8″ x 8″ x 20′ except those models denoted with (✝), which are 8″ x 12″ x 20′.

  1. Burner input based on No. 2 fuel oil with a heating value of 140,000 Btu per gallon.
  2. Net water ratings based on an allowance of 1.15.
  3. Net steam ratings based on an allowance of 1.333.
  4. Consult factory before selecting a boiler for installations having unusual piping and pickup requirements, such as intermittent system operation, extensive piping systems, etc.
  5. Heating Capacity and Annual Fuel Utilization Efficiency (AFUE) ratings are based on U.S. Government tests.
  6. Thermal efficiency and gross output are determined in accordance with BTS 200 Testing Standard.




Series EC/ECT™ Boiler Dimensions

Boiler Model Number Jacket Depth
“A”
Rear of Jacket to c/l of Vent
“B”
Vent Size Diameter
“C”
Distance Between Supply Tappings
“D”
EC/ECT-03 15-3/4″ 8-3/4″ 6″ 9-1/16″
EC/ECT-04 19-15/16″ 10-7/8″ 7″ 13-1/4″
EC/ECT-05 24-1/8″ 13″ 8″ 17-7/16″
EC/ECT-06 28-5/16″ 15-1/16″ 9″ 21-5/8″