Residential Boilers - Gas Boilers Series MI™ Boiler

The Series MI™ residential, cast iron, hot water boiler is fully packaged and ready-to-install in conventional chimney applications. The key component of the Series MI™ boiler is the heat exchanger which features a greater percentage of cast iron than the competition for a long life of durability and dependability. The front-facing integral draft diverter lends to a low-profile design allowing for installation in tight spaces with low ceilings. Backed by a non-prorated lifetime warranty on the heat exchanger, the Series MI™ is a top choice!




Product Details:

Type: Residential
Construction: Cast Iron
Fuel: Gas-Fired (Natural or LP)
Input: 70 to 260 MBH
Output: 58 to 211 MBH
Venting: Natural Draft
Trim: Water
Ignition: Spark Pilot


AHRI Member

 

Series MI™ Water Content, gal
Model Number Input, MBH Heating Capacity3, MBH Net Ratings Water1,2, MBH AFUE3, %
MI-03 70 58 50 82.2 4.72
MI-04 105 86 75 82.1 6.00
MI-05 140 115 100 82.0 7.28
MI-06 175 143 124 82.0 8.56
MI-07 195 160 139 82.0 9.84
MI-08 227.5 186 162 82.0 11.12
MI-09 260 211 183 82.0 12.40
  1. Net water ratings based on an allowance of 1.15.
  2. Consult factory before selecting a boiler for installations having unusual piping and pickup requirements, such as intermittent system operation, extensive piping systems, etc.
  3. Heating Capacity and Annual Fuel Utilization Efficiency (AFUE) ratings are based on U.S. Government test.




Series MI™ Boiler Dimensions

Boiler Model Number Jacket Length (Depth)
“A”
Jacket Width
“B”
Jacket
Height
“C”
Rear of Jacket to c/l of Vent
“D”
Left of Jacket to c/l of Vent
“E”
Vent Size Diameter
“F”
MI-03 26-5/8″ 12-1/2″ 31-3/8″ 20-13/16″ 6-1/4″ 5″
MI-04 26-5/8″ 15-7/8″ 31-3/8″ 20-13/16″ 7-11/16″ 5″
MI-05 26-5/8″ 19-1/4″ 31-3/8″ 21-13/16″ 9-5/8″ 6″
MI-06 26-5/8″ 22-5/8″ 31-3/8″ 21-13/16″ 11-5/16″ 6″
MI-07 26-5/8″ 26″ 31-3/8″ 21-13/16″ 13″ 7″
MI-08 29-5/8″ 29-3/8″ 31-3/8″ 23-5/16″ 14-11/16″ 8″
MI-09 29-5/8″ 32-3/4″ 31-3/8″ 24-5/16″ 16-3/8″ 8″