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Kuma Stoves K-250 Cambridge LE Installation And Operating Instructions Manual

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Model # K-250:
Ashwood LE
Wood Classic LE
Cambridge LE
Tested and listed by OMNI-Test
Laboratories Inc.
Portland OR, USA
Emissions tested to: ASTM 3053-2017
Report# 0123WM012E
Safety tested to UL 1482-2011 (R2015)
Report # 0123WS012S
INSTALLATION AND OPERATING INSTRUCTIONS
SAVE THESE INSTRUCTIONS
K-250
| 190808

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  • Page 1 Model # K-250: Ashwood LE Wood Classic LE Cambridge LE Tested and listed by OMNI-Test Laboratories Inc. Portland OR, USA Emissions tested to: ASTM 3053-2017 Report# 0123WM012E Safety tested to UL 1482-2011 (R2015) Report # 0123WS012S INSTALLATION AND OPERATING INSTRUCTIONS SAVE THESE INSTRUCTIONS K-250 | 190808...

  • Page 2: Table Of Contents

    This manual describes the installation and operation of the Kuma Model K-250 Catalytic equipped wood heater. This heater meets the 2020 U.S. Environmental Protection Agency’s cord wood emission limits for wood heaters sold after May 15, 2020. Under specific test conditions (ASTM 3053-2017) this heater has been shown to deliver heat at rates ranging from 11,196 to 30,308 Btu/hr.
  • Page 3 SECTION 1 - WARNINGS WARNING If this stove is not properly installed, a house fire can occur. For your protection, follow the installation instructions provided. We recommend contacting local building or fire officials regarding restrictions and installation inspection requirements in your area. We also recommend that your Kuma stove be installed by a properly trained and licensed installer, preferably an NFI (National Fireplace Institute) expert.

  • Page 4: Section 2 - Specifcations

    SECTION 2 - SPECIFICATIONS CERTIFICATION TAG...
  • Page 5 WOOD CLASSIC DIMENSIONAL DRAWINGS All dimensions are in inches.
  • Page 6 ASHWOOD DIMENSIONAL DRAWINGS All dimensions are in inches.
  • Page 7 CAMBRIDGE DIMENSIONAL DRAWINGS All dimensions are in inches.
  • Page 8 MINIMUM CLEARANCE REQUIREMENTS Pipe clearances (A,C,E) are measured to the outside diameter of the pipe. Pipe diameter will vary by brand so when planning your installation, make sure the stove clearances (B,D,F) AND the pipe clearances (A,C,E) are equal to or greater than the minimum clearances. Always follow local building codes. These clearances may be reduced only by using approved methods found in NFPA 211.

  • Page 9: Section 3 - Installation Instructions

    SECTION 3 – INSTALLATION INSTRUCTIONS ( F S ) It is highly recommended that this stove is installed by a qualified professional certified by the National Fireplace Institute. The structural integrity of the floor, walls and ceiling/roof must be maintained. Use additional bracing if required.
  • Page 10 FLOOR PROTECTION REQUIREMENTS Floor protection must be non-combustible. Floor protection must be underneath the stove and extend to the sides and front of the stove as shown below. Side protection (G) is measured to the top plate of the stove. Front protection (H) is measured to the face of the stove.
  • Page 11 CHIMNEY AND CONNECTOR PIPE REQUIREMENTS A properly installed and maintained venting system is critical to the safe operation of your wood stove. This stove may be connected to a factory built all fuel chimney system that has been safety tested to the UL- 103HT standard or to a lined masonry chimney that meets the standards of NFPA 211.
  • Page 12 passing the chimney through an attic space an insulation shield must be used to ensure that no insulation can contact the chimney. For safety, the chimney must penetrate the roof a minimum of 3 feet AND must be at least 2 feet higher than any part of the roof that is within 10 feet of the chimney. For proper draft, the venting system (chimney + connector pipe) should be at least 14 feet from the stove top to the venting cap.
  • Page 13 Typical installation of an all fuel chimney system...
  • Page 14 WHEN CONNECTING TO A MASONRY CHIMNEY WHEN PENETRATING A COMBUSTIBLE WALL TO CONNECT TO A MASONRY CHIMNEY YOU MUST BE CERTAIN THAT THE WALL PASS THROUGH IS A SAFE AND CODE APPROVED METHOD such as the NFPA 211 standard. See Figure 6-7.5 from the NFPA 211-2016, Standard for Chimneys below...
  • Page 15 Reprinted with permission from NFPA 211-2016, Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-Burning Appliances, Copyright © 2015, National Fire Protection Association, Quincy, MA. This reprinted material is not the complete and official position of the NFPA on the referenced subject, which is represented only by the standard in its entirety which may be obtained through the NFPA website at www.nfpa.org.

  • Page 16: Section 4 - Operating Instructions

    SECTION 4 - OPERATING INSTRUCTIONS NEVER USE FLAMMABLE LIQUIDS TO START OR FRESHEN UP A FIRE CAUTION: Do not use any fuels that are not seasoned natural wood. Do not leave the stove unattended with the door open. DO NOT OVERFIRE THIS HEATER – Attempts to achieve heat output rates that exceed heater design specifications can result in permanent damage to the heater and to the catalytic combustor.
  • Page 17 UNDERSTANDING DRAFT Draft is the force which moves exhaust from the appliance up through the chimney. A properly drafting chimney will pull the correct amount of air into the stove and will provide you with excellent performance and heat output. Inadequate draft may cause back puffing of smoke into the room and creosote formation in the chimney.
  • Page 18 HYBRID WOOD STOVE TECHNOLOGY This stove’s burn system combines the features of non-catalytic technology with the clean efficient burn of catalytic wood stove to create an easy to use, ultra-low emission hybrid appliance. Read about each feature below to help you operate your stove efficiently and beautifully 1.
  • Page 19 a. Always set the air control to high for 20 to 30 minutes when starting or after refueling your stove. This allows the stove and chimney to come up to operating temperature. b. When set to high, the primary air washes the glass as it feeds the fire to help keep it clean. If your glass has built up any smoke deposits from slow burning, set the air control to high for 20 to 30 minutes.
  • Page 20 After 15 minutes or Once the catalytic thermometer is close to the active range, close the bypass control to the Run Position engaging the combustor. Leave the air control open for 20-30 minutes so that the fire becomes well established. If you shut the stove down too soon, it may go out or the combustor may stop working.

  • Page 21: Section 5 - Catalyst Information

    SECTION 5 - CATALYST INFORMATION TAMPER WARNING This wood heater contains a catalytic combustor which needs periodic inspection and replacement for proper operation. It is against federal regulations to operate this wood stove in a manner inconsistent with the operating instructions in this manual, or if the catalytic element is deactivated or removed. CATALYST TYPE The combustor supplied with this wood stove is an Applied Catalysts ACI-5M combustor.

  • Page 22: Section 6 - Maintenance

    SECTION 6 - MAINTENANCE This wood heater needs periodic inspection and repair for proper operation. FIRE EXTINGUISHER Every home should have a type A:B:C fire extinguisher that is checked and maintained on a regular basis. The National Fire Protection Agency (nfpa.org) recommends having an extinguisher on each floor of your home. The location of the extinguisher should be known to everyone in the house.
  • Page 23 retaining ring or replace the gasket. Replacement gaskets and service are available through your local dealer or by visiting kumastoves.com. GLASS CLEANING AND REPLACEMENT Never clean the glass when it is hot. Your stove is equipped with an air wash system that will self-clean. Burn the stove on high for 20 to 30 minutes every time you add fuel to the fire.
  • Page 24 gasket material (you can use masking tape to hold it in place). The gasket provided will expand 2-3 times its original thickness once heated to seal gaps. BRICK AND CERAMIC INSULATION REPLACEMENT Bricks and ceramic insulation should be inspected annually and replaced if necessary. Cracked bricks are fine if they remain in place.
  • Page 25 MAINTENANCE DIAGRAMS & PARTS LIST...
  • Page 26 Parts and support are available from your local dealer, by contacting Kuma Stoves at 888-714-5294 or visiting kumastoves.com and clicking on the support tab. Item # Description KR-BH-25 Bypass hinge assembly, stainless steel. Fits: ASH/WCL/CAM/CAS. KR-BP-01 Bypass plate, stainless steel. Fits: All models.

  • Page 27: Section 7 - Troubleshooting

    SECTION 7 - TROUBLESHOOTING STOVE BURNS LAZY AT START UP. 1. The chimney is still cool, allow more time to warm up. 2. Wood is not seasoned (still green). Wood should sit for about 1 year, split and loosely stacked if it was cut green.

  • Page 28: Catalyst Troubleshooting

    3. Chimney and/or the chimney cap needs to be cleaned. Your chimney should be checked and cleaned, if necessary, every few months. Even a small amount of buildup can cause a draft restriction, for example: ¼ inch of buildup on the side wall of an 8” chimney reduces the effective area of the chimney by about 20%.

  • Page 29: Section 8 - Warranty

    6-year structural warranty: Warranty claim must meet the following conditions: 1. warranty has been registered proving the date of purchase and that you are the original owner. 2. You return the catalyst to Kuma stoves: No advanced exchange is available under this warranty.3.

This manual is also suitable for:

K-250 wood classic le

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