Heatmor 100 CSS Manual
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Heatmor 100 CSS Manual

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  • Page 1 General CSS SAVE THESE INSTRUCTIONS Manuel en Français disponible en ligne: www.HEATMOR.com...
  • Page 2 Proper personal protective equipment, (PPE), MUST BE WORN AT ALL TIMES when servicing and maintaining any of the HEATMOR Stainless Steel Outdoor Furnace product line.

  • Page 3: Table Of Contents

    B Placing the HEATMOR™ on the Concrete Base C Filling the HEATMOR™ Outdoor Furnace Initially with Water D Maintaining Heat Transfer Fluid (HTF) in the Bladder and HEATMOR™ E Low Heat Transfer Fluid (HTF) Condition F Initial Installation of Sand...
  • Page 4 10 HEAT TRANSFER FLUID (HTF) A Qualitie of Water to Use B Heat Transfer Fluid (HTF) Level Maintenance C Removal/Replacement of System Heat Transfer Fluid D Freeze Protection E Adding Freeze Protection Products 11 BLADDER ASSEMBLY A Bladder B Removal and Replacement of the Bladder C Bladder Ball Valve and Bladder Hose D Heat Transfer Fluid (HTF) Level Gauge E Fluid Level Sensor...
  • Page 5 D High Temperature Safety Shutoff E Front Light and Fan Power Switch F In the Event of a Power Failure 19 EXTERIOR CLADDING AND INSULATION A Outer Front Door of HEATMOR™ B Roof of the HEATMOR™ C Sides of the HEATMOR™ D Insulation...

  • Page 6: Notice To The Reader

    The methods of operation described within this Operations and Maintenance Manual have proven to be effective for HEATMOR™ for the sole purpose of the operation of a HEATMOR™ Stainless Steel Outdoor Furnace. All formulas and figures listed within this Operations and Maintenance Manual are approximated and should be read as such.

  • Page 7: Certificate Of Compliance

    Units are Safety Listed by Omni Test Laboratories Report # 275-O-11-4 and # 275-O-12-4 Listed to UL2523-2009 and CSA B366.1-11 Rev. 05/2020...

  • Page 8: Heatmor™ Stainless Steel Furnace Models

    CHAPTER 1 HEATMOR ™ STAINLESS STEEL OUTDOOR FURNACE MODELS Model 100 CSS Model 200 CSS Model 400 CSS Rev. 05/2020...

  • Page 9: Furnace Specifications

    CHAPTER 2 RESIDENTIAL FURNACE SPECIFICATIONS Specifications Model 100 CSS Model 200 CSS Model 400 CSS Overall Width (Inches) Base Width (Inches) (Footprint) 46.5 46.5 46.5 Overall Height (Inches) 82.5 82.5 82.5 (With chimney stub) Overall Length (Inches) Base Length (Inches) (Footprint) 53.75...

  • Page 10: Front Cut Away View Of Heatmor

    CHAPTER 3 FRONT CUT-AWAY VIEW OF HEATMOR™ OUTDOOR FURNACE (For parts not shown on the cut-away view, please refer to the appropriate chapter for further details.) Rev. 05/2020...

  • Page 11: A Furnace Parts List

    FURNACE PARTS LIST Firebox Ashes Firebox Ash pan Firebox door Ash auger (not shown) Firebox door hoses and elbows Ash auger tube Firebox door handle Ash auger tube cover plate Firebox door hinge Firebox door latch Bladder assembly Firebox door handle holder (not shown) Firebox door gasket Bladder Firebox door frame...

  • Page 12: Rear Cut Away View Of Heatmor

    CHAPTER 4 REAR CUT-AWAY VIEW OF HEATMOR™ OUTDOOR FURNACE (For parts not shown on the cut-away view, please refer to the appropriate chapter for further details.) Rev. 05/2020...

  • Page 13: A Furnace Parts List

    Automatic Fan Switch (A.F.S.) Lift hook Chimney and top flue Lift ring Chimney Stub Light Globe, Keys, Manual Chimney extension(s) (not shown) Flue (next page) Flue cover plate (next page) Flue scraper (not shown) *Picture references pre 2015 HEATMOR Rev. 05/2020...

  • Page 14: Minimum Clearance Separation Specifications

    A HEATMOR™ Stainless Steel Outdoor Furnace should be located with consideration to your neighbor’s property and in accordance with local ordinances. HEATMOR™ Outdoor Furnaces, Model 100 CSS, 200 CSS and 400 CSS are not designed or certified to be located in densely populated areas.

  • Page 15: Warnings And Precautions

    10) Do not pressurize the HEATMOR™ Outdoor Furnace. This unit is designed to operate under atmospheric pressure only. 11) Place the in-line fill/drain assembly in a location where the drained contents of the HEATMOR™ will not cause damage to the surrounding areas or it’s contents. Rev. 05/2020...
  • Page 16 2) Do not operate the HEATMOR™ furnace until all electrical and water line connections have been properly installed and tested. 3) Do not allow any fire in the firebox until the HEATMOR™ has the correct amount of Heat Transfer Fluid (HTF) and sand installed.

  • Page 17: Concrete Pad Specifications

    2. Allows better visibility of the firebox. 3. Less bending when adding coal. PATIO STONES OR SEPARATE CEMENT SLAB FOR CONVENIENT LOADING 4. Keeps smoke above the operator. 5. Protects the base of the HEATMOR™. LOADING DOOR OUTDOOR FURNACE SITS HERE SIDE VIEW CEMENT BASE 4”...

  • Page 18: B Model 200 Pad Specifications

    2. Allows better visibility of the firebox. 48” 3. Less bending when adding coal. 4. Keeps smoke above the operator. 5. Protects the base of the HEATMOR™. PATIO STONES OR SEPARATE CEMENT SLAB FOR CONVENIENT LOADING LOADING DOOR...

  • Page 19: C Model 400 Pad Specifications

    2. Allows better visibility of the firebox. 3. Less bending when adding coal. 4. Keeps smoke above the operator. 48” 5. Protects the base of the HEATMOR™. PATIO STONES OR SEPARATE CEMENT SLAB FOR CONVENIENT LOADING LOADING DOOR...

  • Page 20: Installation Of The Heatmor™ Furnace

    1) Need to have an airtight seal between the concrete base and the perimeter of the firebox base. 2) Need to seal the perimeter of the entire HEATMOR™ so rodents are not able to find a home inside the HEATMOR™.

  • Page 21: C Filling The Heatmor™ Outdoor Furnace Initially With Water

    HEATMOR™ suggests the use of brass fittings when installing the unit. When filling or adding fluid to your HEATMOR™ always be sure to maintain a minimum of 30% DOWFROST™ HD (corrosion inhibited-propylene glycol) in with your approved water.

  • Page 22: D Maintaining Heat Transfer Fluid (Htf) In The Bladder And Heatmor

    30% DOWFROST™ HD) but open at all other times. Your bladder should have a small amount of HTF in it. 2) HEATMOR™ does not recommend the use of in-line fill valves due to the dilution of the HTF over time.
  • Page 23 Initial Installation of Sand Types of sand to use 1) Sand that does not contain clay, rocks or organic matter is appropriate. Use a sand that when packed will not allow air to pass through. Mortar sand, or sand that is used in the redi-mix concrete business is good.
  • Page 24 SAFE FURNACE OPERATION GUIDELINES Operation Heatmor™ outdoor furnaces, model 100 CSS, 200 CSS, and 400 CSS are certified to burn wood only. Refer to WHAT SHOULD I BURN. Burning of other materials may result in serious burns, health consequences, or damage to this furnace and other components of the heating system and may void warranty.
  • Page 25 15) Wear a particle mask when removing ashes. 16) Ash auger may be hot after removing ashes. 17) In case of power failure, do not open any doors on the HEATMOR™. Monitor the HTF temperature very closely. Refer to “freeze protection” in this manual.
  • Page 26 Lighting the HEATMOR™ for the First Time When lighting the HEATMOR™ furnace for the first time, all installations must be complete and the furnace must be full of Heat Transfer Fluid (HTF). Use the following steps simply as a guideline or contact your local dealer for further instruction. Read the entire manual before lighting, so you have a complete working knowledge of the furnace.
  • Page 27 Just as moisture collects on the inside of a warm house window on a cold outside day, the same thing is occurring inside the HEATMOR firebox. The warm moisture in the smoke is condensing on the cold firebox walls of the HEATMOR. In most typical situations, once the HTF temperature is above approximately 130 degrees Fahrenheit, the sweating will stop because you are above the dew point.
  • Page 28 It is very important to fully educate all those who will be loading the furnace with wood. Loading a large amount of wood into the HEATMOR™ furnace once a day is not always best. We have found that you have a more efficient fire and produce less smoke when you add fuel twice a day.
  • Page 29 What Should I Burn? This furnace is designed to burn well-seasoned cordwood. Well seasoned wood is wood that has been properly prepared for combustion. Proper seasoning is generally accepted to be wood that has been harvested, split if necessary, and stored for a reasonable amount of time.
  • Page 30 At this point the fuel/air mixture is fuel rich. With proper “secondary air” introduction the fuel/air mixture will approach ideal and result in proper combustion. Your Heatmor furnace is designed to create this situation. Wood too high in moisture content results in lower temperatures and unreliable performance.
  • Page 31 3) Q. Is it a good idea to put the front of my HEATMOR™ into my wood storage building so I can load the HEATMOR™ from inside? A.
  • Page 32 Types of Coal There are three main types of coal approved for use in a HEATMOR™ furnace. They are Pennsylvania anthracite, Eastern Canadian bituminous and Western Canadian sub- bituminous. Coal can vary in size by grade. Use “stove” coal or a similar size. Smaller sizes may restrict airflow and larger sizes may not burn efficiently, if at all.
  • Page 33 If for any reason you need to remove the HTF, it must disposed of in accordance with your Local/State Guidlines. The use of an In-Line Filling system is not recommended by HEATMOR as it may void your warranty due to the dilution of the HTF When refilling your HEATMOR™, refer to “Filling the HEATMOR™...
  • Page 34 Maintain the minimum of a 30% DOWFROST™ HD to approved water ratio at all times. Before draining the HTF, please refer to “Removal/Replacement of System HTF”. Only use additives as instructed by your HEATMOR rep., as they may void your warranty Adding Freeze Protection Products Maintain the minimum of a 30% DOWFROST™...
  • Page 35 Bladder Principle of the Bladder The HEATMOR™ is designed to be a semi-closed system. The bladder is a reservoir that accepts the increased volume of HTF that results when the HTF within the water jacket expands as it is heated.
  • Page 36 Removal and Replacement of the Bladder 1) Turn off the bladder ball valve located at the front of the HEATMOR™ furnace. 2) Remove the bladder cover plate held in place by two wing nuts. 3) Remove the HTF level gauge and pull the rope through the eyelet.
  • Page 37 3) Remove the rope and replace it with a new HTF level gauge rope. 4) Thread the rope over the bladder and through the eyelet 5) Attach the HTF level gauge. 6) Refill the bladder refer to “Filling the HEATMOR™ Outdoor Furnace Initially with Water” Bladder Cover Plate Add Fluid Sign...
  • Page 38 HTF within the water jacket absorbs heat produced in the firebox. The heated HTF is used to transfer heat from the HEATMOR™ into the building needing heat. The water jacket and the firebox are one welded component and can be replaced.
  • Page 39 Wood should not be thrown into the firebox in a rough manner. Creosote should never have to be scraped off the firebox walls. Removal and Replacement of the Weldment 1) Contact your dealer 2) Refer to Online Video “2016 HEATMOR™ High Efficiency Weldment Changeout” Rev. 05/2020...
  • Page 40 Firebox Door Principles of the Firebox Door The firebox door is HTF cooled to prevent warping of the door. It also acts like a water jacket, absorbing heat from the fire, and placing that energy into the HTF. Being HTF cooled, the front of the firebox door will never be hotter than the HTF.
  • Page 41 ABSOLUTELY NO FIRE IN THE FIREBOX WHEN PERFORMING THIS PROCESS.DO NOT PERFORM THIS PROCESS WHEN UNIT HTF TEMPERATURE IS UNSAFE. ALWAYS WEAR PROPER PERSONAL PROTECTIVE EQUIPMENT WHEN WORKING WITH HTF AND CHEMICALS. Removal of Firebox Door 1) Turn off power to the combustion air blowers. 2) Ensure that the fire in the firebox is extinguished.
  • Page 42 Firebox Door Hoses and Elbows Principle of the Door Hoses The door hoses allow HTF to circulate between the firebox door and the water jacket. Operation of the Door Hoses The door hoses allow HTF from the water jacket to pass through the firebox door, through thermal siphoning.
  • Page 43 “flash back.” The firebox door handle is also designed to “stick” to the firebox door handle holder on the outer door. This procedure prevents either of the doors closing while the Heatmor is being loaded with coal.
  • Page 44 Principles of the Firebox Door Magnet The firebox door magnet provides a means of holding both the outer front door and the firebox door completely open while the operator is loading wood into the HEATMOR™. Operation 1) Open the firebox door as you step backwards towards the exterior door. This allows you to be out of the way if there is a “flash back”...
  • Page 45 6) Leave the firebox door open for 24 hours to allow silicone to dry completely. NOTE: You will need 66 inches of 1 inch door rope material and one tube of caulking. The door rope kit is available from your HEATMOR™ dealer. Firebox Door Frame...
  • Page 46 Firebox / Base Connector Clamps Principles of the Firebox / Base Connector Clamps To allow easy separation of the firebox / water jacket assembly and the base, if repairs are needed to either assembly Firebrick Principles of the Firebrick Once heated, the firebricks hold heat for a long period of time.
  • Page 47 Removal and Replacement 1) Allow the coals to burn completely and extinguish. 2) Push the ashes to the back of the firebox or remove all the ashes from the firebox. 3) Run a small pry-bar around the perimeter of the grate and the edge of the ash pan to loosen the grate.
  • Page 48 Sand Principles of Sand in the Base of the Firebox The HEATMOR™ furnace, in boiler terms, is a “dry base boiler.” This is to say there is no HTF around the base of the firebox. The firebrick and sand hold and release heat to the firebox during the off cycle.
  • Page 49 Flash Curtain / Heat Shield ABSOLUTELY NO FIRE IN THE FIREBOX WHEN PERFORMING THIS REPAIR. ALWAYS WEAR PROPER PERSONAL PROTECTIVE EQUIPMENT. Principles of the Flash Curtain / Heat Shield The purpose of the flash curtain is to decrease the amount of smoke emitted from the door when loading wood into the firebox.
  • Page 50 CHAPTER 14 AIR SUPPLY Combustion Air Blower(s) and Flipper Assembly(s) THE FLIPPER MUST OPERATE PERFECTLY OR PROBLEMS QUICKLY ARISE. Principles The combustion air blowers and flipper assemblies supply air for combustion inside the firebox. The flipper assemblies keep air out of the firebox when combustion is not needed. These components are removable and serviceable.
  • Page 51 Removal and Replacement 1) Turn off the main power supply to the furnace. 2) Loosen and remove the thumbnuts securing the blower/flipper assembly to the air tube. 3) Disconnect the electrical wire from the blower. 4) Remove the flipper assembly from the blower by removing the four bolts. This will require a 7/16 inch wrench.
  • Page 52 “fan on” position or if the Automatic Fan Switch fails in the “fan on” position, the Heatmor combustion fan will continue to run until the high limit is tripped. Ensure that the Automatic Fan Switch is...
  • Page 53 CHAPTER 15 CHIMNEY AND FLUE Chimney Principles The principle of the chimney is to discharge smoke from the flue into the atmosphere. Maintenance Make sure chimney and chimney extensions are clean and in good condition. The chimney may be cleaned from the top with Chimney a chimney-cleaning device.
  • Page 54 4) Re-attach the flue cover plate, making sure to tighten the nuts to make an airtight seal. 5) If the HEATMOR™ Furnace unit is shut down for the Flue Scraper summer, inspect and clean the flue for the next heating season.
  • Page 55 ASHES Ash Management and Ash Removal 1) If ash management is deficient, the HEATMOR™ will not perform to its optimum. It is time well spent to ensure proper ash management. In the long run, the operator will be paid back many times over in higher efficiency and better performance.
  • Page 56 3) A proper method of storing the ash auger is to attach a six inch PVC pipe, three feet long, to the side of the Ash Auger HEATMOR™. Storing the auger in the tube will keep it from being frozen into or under snow. Rev. 05/2020...
  • Page 57 The ash auger tube is a six inch diameter tube that extends from the rear of the ash pan, to approximately four inches past the cladding of the HEATMOR™. This extension allows placing a container under the tube to catch the ashes.
  • Page 58 1) The Electronic Aquastat Controller is reading the temperature of the HTF at the top of the water jacket, at the rear of the HEATMOR™. The hot supply HTF is taken from the bottom of the water jacket at the rear of the HEATMOR™.
  • Page 59 4) Do not place electrical wire in close contact with the supply and return lines. 5) The electrical supply wire should be connected to it’s own circuit. 6) The red wire is used as a 120v signal back to the house that the Heatmor is in an Over-Temp situation.
  • Page 60 By starting heating appliances in the building, heat will be drawn off the HEATMOR™, dumped into the building, creating an elevated temperature environment in the building, and hence a notification of an unusually high HTF temperature within the HEATMOR™.
  • Page 61 In the Event of a Power Failure If a power failure occurs during the use of a HEATMOR™, do not open the firebox door to provide draft for the fire to burn. Allow the fire to go out. In case of a prolonged power failure, a generator should be used as a back-up power source.
  • Page 62 CHAPTER 19 EXTERIOR CLADDING AND INSULATION Outer Front Door of the HEATMOR™ Principles of the Outer Front Door The outer door of the furnace is an exterior door, which is insulated to retain the heat that radiates from the firebox door and water jacket surface.
  • Page 63 5) Secure the new roof to the frame of the furnace. 6) Re-seal the lift point and relief vent pipe with high temperature silicone. Sides of the HEATMOR™ Principle of the Sides The sides of the furnace are clad with your choice of steel siding.
  • Page 64 CHAPTER 20 CHECKING FOR AIR LEAKS Once your HEATMOR™ system is up and running, we recommend that you conduct an initial check for air leaks from the furnace. To detect an air leak, put some green grass (or something which will create heavy smoke) into the furnace. When the furnace is smoking, cover the chimney and turn off the blower and watch for smoke leaks.
  • Page 65 CHAPTER 21 HEAT TRANSFER FLUID (HTF) LEAKS If you suspect that your HEATMOR™ Stainless Steel Outdoor Furnace has developed a HTF leak, please contact your local dealer for verification and further details. Rev. 05/2020...
  • Page 66 This method of heating needs to be planned from the initial stages of purchasing your HEATMOR™. A HEATMOR™ Outdoor Furnace must be special ordered and manufactured with a special hole at the back of the furnace to accommodate the domestic coil.
  • Page 67 HTF is circulating correctly. End of Season To begin End of Season Shutdown of your Heatmor™ Outdoor Furnace, follow the instructions below: 1) Turn off pump(s). 2) Clean Flue Refer to “Flue”...
  • Page 68 DOWFROST™ HD mix in with your approved water. Refer to “Heat Transfer Fluid” 9) Take HTF sample and Mail to HEATMOR™, Box 787, Warroad, MN 56763 as per annual requirement to keep warranty valid NOTE: The HTF in the HEATMOR™ must be chemically analyzed once per year to ensure the proper levels of treatment are being maintained.
  • Page 69 Refer to: • “Maintaining the correct amount of HTF in the bladder and in the HEATMOR™” Why is HTF coming out of the overflow relief vent pipe? When the furnace is initially filled and too much HTF is in the furnace, it releases through the relief vent pipe when the furnace is up to temperature.
  • Page 70 Why am I experiencing an excess build up of creosote in the furnace? You more than likely are introducing unwanted draft into the firebox. This may be caused by several things, including a door ajar, ash auger tube cover loose, flipper assembly stuck.
  • Page 71 CHAPTER 25 TROUBLESHOOTING AND SOLUTIONS Main Principles to Remember • Enough Wood • Enough HTF • Fans On - Air Must Get In • Fans Off - Air Must Stay Out • Heat Transfer Fluid (HTF) temperature between 165 and 180 degrees Fahrenheit PROBLEM CAUSE SOLUTION...
  • Page 72 Chimney plugged Clean Chimney “Chimney” maintain HTF Not enough wood in “Loading Wood into Add Wood Firebox the HEATMOR™” Remove blower and flipper assembly. Draft flipper stuck “Steps to Maintain Clean, lube, or replace Electrical power is Check all electrical “Electrical”...
  • Page 73 Flipper Assembly” Too much heat draw Verify furnace size Local Dealer on furnace for application “Filling the Heat Transfer Fluid HEATMOR™ Add HTF (HTF) to low Outdoor Furnace Initially with HTF” “Chimney Furnace has excessive moisture Chimney plugged Clean Chimney...
  • Page 74 180° F Control)” Loading fuel too Load your fuel away Firebox Door “Loading Coal into close to the firebox from the firebox the HEATMOR™ pops or Rattles door door Adjust aquastat “Electrical (HTF HTF Temp. range spread setting Temperature Range...
  • Page 75 Opening firebox Do not add so much “Loading Coal into comes out firebox door when there’s fuel at one time the HEATMOR™” door when loading still fuel inside Opening door within Open door sooner “Loading Wood into 30-45 Seconds of or wait for next cycle the HEATMOR™”...
  • Page 76 PROBLEM CAUSE SOLUTION REFERENCE Add HTF. Complete “Filling the Furnace Losing HTF Furnace is boiling a full furnace check Initially with HTF” of all systems Very slow leak Check and tighten somewhere in the Local Dealer any leaking fittings system Someone has Check valves and “HTF Level...
  • Page 77 Local Dealer of heating devices building Heating devices Maintain heating Local Dealer need maintenance devices HEATMOR™ not “Electrical Aquastat running between Adjust Aquastat Controller” 160°F - 180°F A) Check circulating Insufficient HTF pumps, replace if circulation from...
  • Page 78 PROBLEM CAUSE SOLUTION REFERENCE Improper installation Call your Local of coil in forced air Local Dealer Dealer furnace Too small a coil in Call your Local Local Dealer forced air furnace Dealer When a water- to-water heat exchanger is Inadequate installed a temp Local Dealer Baseboard...
  • Page 79 Warranty can be found at https://heatmor.com/warranty/ Rev. 05/2020...
  • Page 80 Any registered Heatmor Outdoor Furnace owner that is listed as the 1 referral contact for a Heatmor Furnace sold after July 1, 2020 will be mailed a $100 check for each confirmed referral after the sale of the new furnace is finalized and the warranty is sent in. The Purchaser of a new Heatmor will recieve $100 off their purchace.

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