Munchkin Boiler Manuals, parts lists, wiring diagrams for HVAC equipment:

Free downloadable manuals for Air Conditioners, Boilers, Furnaces, Heat Pumps. Here we provide free downloadable copies of installation and service manuals for heating, heat pump, and air conditioning equipment, or contact information for the manufacturer.

Munchkin Boilers, Manuals, Information, Status

Free Furnace, Heat Pump, Air Conditioner Installation & Service Manuals, Wiring Diagrams, Parts Lists

Below we provide HVAC manufacturer contact information and direct links to free downloadable installation, service, and users manuals, focusing on hard-to-find manuals for older models or discontinued equipment. We also provide links to the manufacturer's current model lists and literature.

Note: for page loading speed this index to HVAC manuals is spread across several pages, but all of the individual companies are listed in this HVAC MANUALS MASTER INDEX

HTP describes Munchkin gas fired "hot water" boilers as a discontinued product.

Kudos to HTP for keeping manuals and information about the Munchkin boiler available to the public.

• Contact: HTP Products also provides documentation in support of Munchkin Boilers, HTP, 272 Duchaine Boulevard | New Bedford, MA 02745 USA, Tel: 800-323-96 Email: sales@htproducts.com Website: http://www.htproducts.com/munchkin-dis.html
  
  Technical support page: http://www.htproducts.com/technicalsupport.html - Accessed 2018/07/31
• MUNCHKIN GAS FIRED BOILER USER MANUAL [PDF] Ver.2. (2006) Heat Transfer Products, op. cit. Munchkin bolers models T50MR2, T80MR2, 80MR2, 140MR2, and 199MR2.
• MUNCHKIN GAS BOILER INSTALLATION MANUAL [PDF] Ver. 2. (2007), HTP, Op. Cit.
• MUNCHKIN GAS BOILER INSTALLATION & OPERATION MANUAL [PDF] Ver. 1, w/ 925 Controller, (2004-2005-2006) Heat Transfer Products, Inc., 120 Braley Rd. E. Freetown MA 02717 USA, Op. Cit.
• MUNCHKIN BOILER WARRANTY [PDF] (2006) HTP, Op. Cit.
• High Card Heating Solutions in a one-page website provides: MUNCHKIN BOILER INFORMATION, MODEL NUMBERS [PDF] (2013) retrieved 2018/07/31, original source: website: http://www.munchkinboiler.net/
• Watch out: see these MUNCHKIN BOILER VENTING REQUIREMENTS MASS. [PDF] (2006) & details provided for Munchkin Boilers installed in Massachusetts, HTP Op. Cit.
• Watch out: unsafe or improper venting of any gas appliance can be dangerous, even fatal. See this case report:
  
  Roberts, Michale, "Carbon Monoxide Lawsuit filed on behalf of the late, beautiful Lofgren family: a photo gallery", Westword [website] retrieved 2018/07/31, original source: https://www.westword.com/news/carbon-monoxide-lawsuit-filed-on-behalf-of-the-late-beautiful-lofgren-family-a-photo-gallery-5874167
  Excerpt:
  
  As noted in the Lofgren family civil suit, parents Parker and Caroline Lofgren, along with their adorable children, Owen, ten, and Sophie, eight, traveled to Aspen to spend Thanksgiving weekend at a facility called The Lodge.
  
  That evening, the lawsuit states, snow began falling on their rental home. As snow accumulated on the roof, a sensor triggered a gas-fired boiler called the "Munchkin" to melt it. But something went terribly wrong. At five p.m. on November 28, 2008, family friends discovered the Lofgrens' bodies -- and they were in fearful condition, according to the lawsuit:
  
  The decedents Parker and Caroline Lofgren were found in their nightclothes on the bed. Caroline had hemorrhaged from her mouth or nose. Owen was found on the floor by his father beside a nightstand. Sophie was found on the floor by her mother with her face bloodied. Blood was also found on the bedding of one of the bunk beds in the children's guest suite.
  
  It was later confirmed that carbon monoxide poisoning killed the Lofgrens, with evidence pointing to the Munchkin boiler.
  
  The suit alleges that the causes of the poisoning included, but were not limited to, a disconnected exhaust vent, a disconnected fresh air intake vent, a defectively designed boiler, an improperly installed HVAC system and the absence of a carbon monoxide detector.
  
  The document argues that several of these factors "were open and obvious violations of Pitkin County Code."
  
  Really? readers take note that a disconnected exhaust flue vent connector alone would be likely to vent combustion products into the occupied space, and a disconnected fresh air intake could, if the result was inadequate combustion air, cause production of carbon monoxide in a gas boiler. Niether of those defects would, in our opinion, need to be specific problems unique to a particular heating boiler brand or model.
  
  The tragic deaths reported by several sources including Roberts should be taken as a warning to assure that heating equipment is properly installed and that there are properly-located, tested, working carbon monoxide detectors in the building.

HTP - Munchkin HVAC Equipment Age Decoder

Find the HTP or Munchkin HVAC equipment data tag and note the serial number and model number found there.

Munchkin boiler age encoded in the serial number as follows:

1. HVAC equipment using a Honeywel controller, built before 2002-11-02 (using the Pre-925-controller): identified by
   
   - A serial number without a "version number" suffix AND
   
   - 80M R1 - A model number with an R1 suffix: built between 2002/11/02 and 2006-12-19
   
   - 80M ASME R2 - A model number with an R2 suffix: Built after 2006-12-20
2. Wall-Mounted HVAC units & Split Systems (indoor unit):
   
   - Manufacture date is printed on the same sticker as the serial number. Look inside the unit's front cover.
3. Using the product serial number (e.g. found on an HTP water heater data tag), use the HTP Warranty Wizard tool found at
   
   - https://www.htp.force.com/warrantywizard

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Reader Q&A - also see RECOMMENDED ARTICLES & FAQs

Question: Munchkin T50 boiler with pex tubing - do I need a mixer valve?

(Nov 24, 2014) Mike said:

Im running a Munchkin t50 boiler with 1800 feet 1/2" Pex tubing in a slab.

Do I need to have a mixing valve or should I use a closely separated tees setup?

Reply:

Mike am not expert on radiant heat slab systems that do not use a mixing valve to keep the water temperature at the required level and to avoid overheating. However there are some modern hydronic heating boilers that include sophisticated controls to adjust boiler temperature to work with radiant floor heating. Those systems may omit a separate mixing valve.

Have you asked a heating design engineer for help with your system to be sure it will meet its requirements?

In any event a water feed valve as discussed in the article above is completely separate from the mixing valve used to maintain radiant heat system temperature.

See RADIANT HEAT MISTAKES

 

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