MI-05 - 100,000 BTU Output Intermittent Ignition Packaged Residential Water Boiler (Nat Gas) Zoom

MI-05 - 100,000 BTU Output Intermittent Ignition Packaged Residential Water Boiler (Nat Gas)


Brand: Peerless

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Fuel Type: Natural Gas
BTU Input: 140000
DOE Rating:
BTU Output: 100000
IBR Rating:
Features: EI/Spark Ignition
Number of Sections: 5
Vent Size: 6"
Height (Inches): 31.375
Width (Inches): 19-1/4"
Depth (Inches): 26-5/8"
Weight (lbs): 435 lbs
System Type: Hydronic (Water)
Vent Type: Atmospheric
Material: Cast Iron
Boiler Type: Packaged
Warranty: 1 Yr Boiler
Limited Lifetime Cast Iron Sections

Description for Peerless 0105016

Note: Product Title reflects this boiler's IBR Net Output Rating

This Peerless Series MI residential, cast iron, hot water boiler is fully packaged and ready to install. It is an atmospheric, gas-fired boiler designed for natural draft use with a conventional chimney. The integral draft diverter provides a low-profile design, allowing the boiler to be installed in areas with low clearance. Standard Honeywell controls are easily accessible, making the Series MI boiler simple to install and service. Standard equipment includes a Taco circulator, a flame rollout safety shutoff switch and a vent safety shutoff switch.


  • Gas-fired
  • Residential Cast Iron Boiler for Hot Water Heating Systems
  • Fully Packaged and Ready to Install
  • Cast Iron Sections - Factory Tested and Assembled with Steel Push Nipples
  • Natural Draft (Chimney) Venting
  • Steel Push Nipples
    • Provide a Permanent Water Tight Seal Between Sections
    • Unaffected by Petroleum and Other Contaminants
  • Deluxe Insulated Enameled Steel Jacket
    • Reduces Boiler Heat Loss
    • Completely Encloses Gas Valve and Burners
  • Safety Controls
    • Flame Rollout Shut-off Switch
    • Vent Safety Switch
  • Low Profile Design
    • Ideal for Installations with Low Ceilings
    • Internal Horizontal to Vertical Draft Diverter
Standard Equipment
  • Honeywell Operating Controls
  • Taco Circulator
  • 30 PSI Safety Relief Valve
  • Drain Valve
  • Electrically Operated Automatic Vent Damper

PLEASE NOTE: The product weighs 435 lbs. and may require the use of a
lift gate.
If you do require a lift gate at your delivery, you'll have the option to add this FREE of charge when you checkout.

MI-05 - 100,000 BTU Output Intermittent Ignition Packaged Residential Water Boiler (Nat Gas)


by PowerReviews
PeerlessMI-04 - 75,000 BTU Output Standing Pilot Packaged Residential Water Boiler (LP Gas)

(based on 2 reviews)

Ratings Distribution

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Reviewed by 2 customers

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(3 of 5 customers found this review helpful)


I would buy this product again and again

By Matt

from Baldwin, NY

Verified Buyer

Comments about Peerless MI-04 - 75,000 BTU Output Standing Pilot Packaged Residential Water Boiler (LP Gas):

Great product.

(9 of 10 customers found this review helpful)


Used to replace a 30 year old peerless

By EJR7781

from Braddock, PA

Verified Reviewer

Comments about Peerless MI-04 - 75,000 BTU Output Standing Pilot Packaged Residential Water Boiler (LP Gas):

Old peerless boiler took its final breath in march 2012 after darn near 30 years of service, decided to go peerless again. This boiler came on time, solid packaging, great documantation made an easy install.
Only beef I had was the 1 1/2" supply outlet (old peerless had 1 1/4")

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Q&A: Ask the Questions, share answers

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2 Questions | 5 Answers
Displaying questions 1-2
  • Q:

    Does this product or any of the M1 series prior to 2009 have a low-water cutoff? is this part of the standard boiler.
    Asked on 4/21/2015 by rudy

    2 answers

    • A:

      Presently comes with either a Beckett or Hydrolevel control which integrates the thermowell aquasat function and low water cut off. Hydrolevel can be used to retrofit an older aquastat only control. For low water cut out function you do have to drain and replace the well with the Hydrolevel one. You can look up manual and brochure for Hydrolevel 3200 unit with download from its listing on this site for details.

      Answered on 6/18/2015 by Seamas R. from Middletown, CT


      I do not show that it comes with a LWCO, but every boiler should have a LWCO installed.

      Answered on 4/24/2015 by Supplyhouse Staff from New York
  • Q:

    Hi, Could you tell me what the blocked vent switch dose? Why dose my boiler blocked vent switch turn the boiler off ? Is it because of to much heat ? or some thing more then just heat ? I have to keep resetting the blocked vent switch and have put a new one in that dose the same thing. Nat Gas Mi-o5 Boiler ,Thanks Joe
    Asked on 2/14/2015 by Joe from From New York, 12508 Zipe

    3 answers

    • A:

      When operating correctly, room air flows across this switch into the burner. Hot air after the burner rises up the exhaust providing negative pressure to pull this air in.

      If the vent is blocked, flow stops and hot air gets to this switch. It is a thermal switch device. You can actually test it by pointing a heat gun at it. It will shut the boiler down.

      Check your motorized vent damper (and its open proving switch) to make sure it is open and clear. Then check the flue. Just pulled two birds nests out of the flue of a newly purchaced house.

      This is EXTREMELY dangerous. I would not be suprised if a CO detector would alarm in the vicinity of the boiler. Do NOT just "jumper" to fix it. In fact, if this was an existing boiler when you moved in, it may already have jumpers in it, possibly the damper proving switch. Have this checked out by a qualified, licensed, heating contractor. Specifically note that you want all the control wiring checked and "rung out" and all safeties tested.

      Answered on 6/18/2015 by Seamas R. from Middletown, CT
    • A:

      1. If the wind is blowing down the chimney the gas fumes cannot escape & will cause the problem you are having.

      2. If for any other reason the gas fumes are not going up the chimney, it will shut the furnace down. Make sure your chimney is tilted upward at an angel toward the wall to correct this problem.

      Answered on 6/9/2015 by Les from Old Forge, Pa


      im assuming its an air proving switch, you have a blockage in the exhaust vent, or its faulty. you should have a technician trouble shoot the system, if the switch is working correctly it is dangerous to use the boiler like that.

      Answered on 3/9/2015 by Supplyhouse Staff from New York
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