SCOTTY SS DB-202A Owner's Manual

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SCOTTY SS
WOOD FURNACE
Model DB-202A
OWNER'S MANUAL
IMPORTANT
READ OWNER'S MANUAL THOROUGHLY BEFORE
INSTALLING FURNACE OR LIGHTING FIRE.
CONSULT LOCAL AUTHORITIES IF IN DOUBT
ABOUT YOUR LOCAL FIRE SAFETY REGULATIONS.
ALL INSTALLATIONS MUST BE MADE IN
ACCORDANCE WITH LOCAL AND STATE OR
PROVINCIAL CODES WHICH MAY DIFFER FROM
THIS MANUAL.
IMPROPER INSTALLATION WILL RESULT IN
VOIDING OF WARRANTY.

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Summary of Contents for SCOTTY SS DB-202A

  • Page 1 SCOTTY SS WOOD FURNACE Model DB-202A OWNER’S MANUAL IMPORTANT READ OWNER’S MANUAL THOROUGHLY BEFORE INSTALLING FURNACE OR LIGHTING FIRE. CONSULT LOCAL AUTHORITIES IF IN DOUBT ABOUT YOUR LOCAL FIRE SAFETY REGULATIONS. ALL INSTALLATIONS MUST BE MADE IN ACCORDANCE WITH LOCAL AND STATE OR PROVINCIAL CODES WHICH MAY DIFFER FROM THIS MANUAL.
  • Page 2: Table Of Contents

    SCOTTY SS – INSTRUCTION MANUAL TABLE OF CONTENTS Specifications Operating instructions Introduction Wood-Burning Storage of Wood Maximum Solid-Fuel Charge Maintenance 1.5.1 Cleaning 1.5.2 Servicing Safety Controls Electrical Power Failure Homeowner Checklist Installation Instructions Introduction to Installers Uncrating Locating the Furnace Flue Pipe &...
  • Page 3 Prohibited Furnace Ductwork Configurations Appendices APPENDIX A – Warranty Rear Cover Copyright 2004 Kerr Heating Products, 2004 Parrsboro Metal Fabricators Ltd. KERR SCOTTY SS Wood Furnace Model DB-202A Certified by the Canadian Standards Association (CSA) Sept. 1982 and Sept. 1988 Manufactured by: Parrsboro Metal Fabricators Ltd.
  • Page 4: Specifications

    SCOTTY SS – INSTRUCTION MANUAL SPECIFICATIONS Length 34” Width 22 1/2” Height 43” Shipping Weight 238 lb Fire Box 1/8”plate Length 27 1/2” Diameter 18” Secondary Heat Exchanger 14 gauge steel Fire Box Door Cast Iron 12” x 12” Warm Air Plenum 21”...
  • Page 5: Operating Instructions

    SCOTTY SS – INSTRUCTION MANUAL OPERATING INSTRUCTIONS INTRODUCTION Congratulations on your purchase of the KERR SCOTTY SS Wood Furnace. Developed in Atlantic Canada, this KERR Furnace has been designed to allow you to heat your home with wood, one of North America’s most abundant fuels. Designed with you in mind, the KERR SCOTTY SS Wood Furnace will provide you with many years of safe, efficient central heating.
  • Page 6: Storage Of Wood

    SCOTTY SS – INSTRUCTION MANUAL CREOSOTE Wood combustion is never 100% complete. Wood smoke always contains some unburned gases and a mixture of unburned tar-like liquids. A percentage of these materials will condense out on any cool surface, leaving a dark brown or black substance with an unpleasant acrid odor.
  • Page 7: Maximum Solid-Fuel Charge

    SCOTTY SS – INSTRUCTION MANUAL MAXIMUM SOLID-FUEL CHARGE The maximum level for a solid-fuel charge is the middle of the loading door, or the level of the handle. DO NOT OVERFILL. The KERR SCOTTY SS Wood Furnace will accept whole or split logs up to 27 inch (686 mm) long, but a 24-inch (610 mm) log length is recommended for convenience and ease in handling.
  • Page 8: Servicing

    SCOTTY SS – INSTRUCTION MANUAL 1.5.2 SERVICING The furnace air filter must be checked monthly and replaced when necessary. Annually lubricate the blower motor, if it is not permanently lubricated, with 4-6 drops of SAE-30 oil in each bearing. CAUTION: Failure to keep air filter clean will result in poor furnace performance and possible damage to wood furnace heat exchanger.
  • Page 9: Homeowner Checklist

    SCOTTY SS – INSTRUCTION MANUAL For optimum heating during a power failure fo llow the procedure listed below: 1) Remove the power failure gravity air inlet cover before starting or refueling during power failure. The cover is an option available from your KERR dealer. The kit must be installed on the cabinet side directly opposite to the entry of the blower or oil furnace “S”...
  • Page 10: Installation Instructions

    SCOTTY SS – INSTRUCTION MANUAL l) Do not store solid fuel within the above clearances or within the space required for charging and ash removal. m) Establish a routine for storage of fuel, care of the appliance, and firing techniques. INSTALLATION INSTRUCTIONS INTRODUCTION TO INSTALLERS Before installing this KERR SCOTTY SS Wood Furnace, please read the following instruction...
  • Page 11: Locating The Furnace

    SCOTTY SS – INSTRUCTION MANUAL LOCATING THE FURNACE (Fig S202-1, Fig S202-3B) The location of the furnace must be as close as possible to the tile -lined brick chimney, or factory-built solid-fuel approved chimney (ULC S629). Keep in mind also the day-to-day operation, and place for ease of fueling and cleaning.
  • Page 12: Clearances

    SCOTTY SS – INSTRUCTION MANUAL WARNING: If this setting is exceeded it could cause a solid fuel fire to burn out of control. We recommend that the KERR SCOTTY SS Wood Furnace be connected to its own chimney. However, two or more fuel-fired appliances, other than fireplaces, wood stoves or incinerators, may be connected to the same chimney.
  • Page 13: Add-On To Another Furnace

    SCOTTY SS – INSTRUCTION MANUAL Minimum safety clearances to combustibles are: Front 48” 1220 mm One Side 6” 152 mm Other Side (for rear access) 24” 610 mm Rear (see Note above) 24” 610 mm Flue Pipe to combustible, other furnace & electrical wiring 18”...
  • Page 14 SCOTTY SS – INSTRUCTION MANUAL Disconnecting the circulation fan low speed switch. If the red wire from the circulation fan switch, in the furnace wiring box, were disconnected from the yellow wire leading to the blower compartment and both, red and yellow wires marretted off then there would be no need for the switching relay (Honeywell R4222D 1013 or equiv.).
  • Page 15: Duct Connection

    (See Fig. S202-2). CAUTION: a) The DB-202A is certified for installations using a divider in the plenum of the oil furnace. b) An ADD-ON unit must only be connected to a furnace, duct system and chimney, which are in good operating condition.
  • Page 16 SCOTTY SS – INSTRUCTION MANUAL After all connections are made a static pressure test and/or temperature measurement must be made in the outlet plenum of the wood furnace. This is a simple procedure and is outlined as follows using a Dwyer Model 25 or equal inclined manometer. a) Drill hole in wood outlet plenum b) Level inclined manometer and adjust to zero, insert manometer tube (Pressure end) c) With all duct work and doors in place static pressure should measure 0.2 in (50 Pa) with...
  • Page 17: Control Systems

    SCOTTY SS – INSTRUCTION MANUAL CONTROL SYSTEM The fan and limit control and the damper motor should be located as shown in Figure S202-2. T822 – Room Thermostat – Wood Furnace The primary control is the room thermostat located near the center of the house in the main floor or near an existing thermostat.
  • Page 18: Temperature Rise Test

    SCOTTY SS – INSTRUCTION MANUAL If the pressure is less than 0.2” w.c. (50 Pa) or that recommended by the electric furnace manufacturer, it may be corrected by the following means: 1) Change blower pulley size (usually decrease). 2) Change blower motor pulley (usually increase). 3) Increase return air duct (if restricted).
  • Page 19: Additional Notes

    SCOTTY SS – INSTRUCTION MANUAL ADDITIONAL NOTES DO NOT relocate any of the safety controls in the original oil furnace installation DO NOT relocate any of the safety controls in the electric furnace installation. Operate the oil-fired unit or electric furnace periodically to ensure that it will operate satisfactory when needed.
  • Page 20: Add-On To Oil Furnace

    100 Square inches. The return air duct area should be equal or larger. As the controls are not suitable, the Scotty SS DB-202A must NOT be installed for normal operation as a GRAVITY system.
  • Page 21: Duct Connections

    3.2.2 DIVIDED PLENUM (Fig S202-4) The Kerr Scotty SS DB-202A is also certified for installation using a divider in the plenum of the oil furnace. CAUTION: When a plenum divider (split plenum) is used in the oil furnace warm air plenum, all fan limit controls in the oil furnace ple num must be located 5”...
  • Page 22 SCOTTY SS – INSTRUCTION MANUAL 3) M847A1031 Draft Damper Motor complete with chain and S hook. Lifts damper in response to wood thermostat’s call for heat. Be sure that damper gate is fully closed when damper motor is not powered. Connect chain to first or second hole up in wheel. Leave bottom chain link open for emergency disconnect –...
  • Page 23: Add On To Electric Furnace

    SCOTTY SS – INSTRUCTION MANUAL T822 – Room Thermostat – Wood Furnace – Fig. S202-5 This is located at or near the center of the house on the main floor or near an existing thermostat. The thermostat operates the damper motor control to open and close the damper door thus allowing more or less air into the wood furnace combustion area to control the fire.
  • Page 24: Duct Connection To An Electric Furnace

    100 square inches and equal or larger area for the return air. As the controls are not suitable, the Scotty SS DB-202A must NOT be installed for normal operation as a GRAVITY system.
  • Page 25: L-Type Duct Connection & Frame

    SCOTTY SS – INSTRUCTION MANUAL 4.2.3 L-TYPE DUCT CONNECTION AND FRAME (Fig S202-6) Cut the side opening in Scotty SS DB-202A wood furnace size 12” x 20” (305 x 508 mm) according to template provided. INSTALLATION SUMMARY (Fig S202-6, Fig S202-7, Fig S202-8) 1) Install Scotty SS and Electric furnace as shown in Fig.
  • Page 26 SCOTTY SS – INSTRUCTION MANUAL 9) 3 – 1 1/2” x #10 sheet metal screws for fastening fan control to mounting bracket IMPORTANT – follow carefully the electrical schematic (decal on wood furnace cabinet or Fig, S202-8 or 9). The electric power for the wood furnace must be supplied from the fused single branch circuit inside the electric furnace cabinet.
  • Page 41 Damage to the furnace or any part or received by Kerr Heating Products within 30 accessory from abuse, misuse, overfiring or (thirty) days after installation of the furnace. improper installation, or any furnace which...
  • Page 42 WOOD FURNACE 5 YEAR WARRANTY Subject to the terms and conditions on the reverse side hereof Kerr Heating Products (hereinafter called “Kerr”) warrants as follows: The heat exchanger of the wood furnace (hereinafter called the “furnace”) against defects of materials and/or workmanship appearing within a period of five years from date of installation.

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