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.
SCOTTY SS – INSTRUCTION MANUAL CONTENTS SECTION 1 OPERATING INSTRUCTIONS Specifications 1.1 Introduction 1.2 Wood-Burning 1.3 Storage of Wood 1.4 Maximum Solid-Fuel Charge 1.5 Maintenance 1.5.1 Cleaning 1.5.2 Servicing 1.6 Safety 1.7 Controls 1.8 Electrical Power Failure 1.9 Homeowner Checklist SECTION 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.8.1 2.8.2 2.9 2.10 3.0 3.1 3.2 3.2.1 3.2.2 3.3 3.3.
SCOTTY SS – INSTRUCTION MANUAL SECTION 4 4.1.1 4.1.2 4.2 4.2.1 4.2.2 4.2.3 4.3 4.4 4.
SCOTTY SS – INSTRUCTION MANUAL Manufactured by: Parrsboro Metal Fabricators Ltd. 12118 Highway 209 P.O.
SCOTTY SS – INSTRUCTION MANUAL SECTION 1 – OPERATING INSTRUCTIONS 1.1 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.
SCOTTY SS – INSTRUCTION MANUAL a) b) c) d) Close the damper door by disconnecting chain Close all draft regulators Throw ½ lb of coarse or table salt on the fire and close door immediately. Call the FIRE DEPARTMENT at once! Have a firmly established Emergency Procedure in place for the handling of a flue fire. CREOSOTE Wood combustion is never 100% complete. Wood smoke always contains some unburned gases and a mixture of unburned tar-like liquids.
SCOTTY SS – INSTRUCTION MANUAL 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. Maximum damper gate opening is 9/16”. Do not tamper or adjust to greater opening in an attempt to increase fire or over-firing and hazard may result. 1.
SCOTTY SS – INSTRUCTION MANUAL Ashes should be placed in a metal container with a tight fitting lid. The closed container of ashes should be placed on a non-combustible floor or on the ground, well away from all combustible materials, pending final disposal. If the ashes are disposed of by burial in soil or otherwise locally dispersed, they should be retained in the closed container until all cinders have thoroughly cooled.
SCOTTY SS – INSTRUCTION MANUAL The fan and limit control mounted in the plenum controls the operation of the circulating blower and prevents the furnace from over-heating. When the air temperature in the plenum reaches the “ON” set point of the fan switch (usually 140º F (60º C)) the blower starts and runs until the plenum cools to the “OFF” set point (usually 100º F (38º C)) when the blower is switched off.
SCOTTY SS – INSTRUCTION MANUAL (a) Keep area around unit clean and clear of combustibles. (b) Use only dry wood. DO NOT burn garbage, gasoline or naphtha. (c) Load carefully. (d) Remove ashes as directed. (e) Watch for soot build up in smoke pipe – clean regularly. (f) Clean furnace heat exchanger regularly. (g) Be aware of danger due to over firing of the unit. (h) Do not load above maximum loading level (middle of loading door) or overheating may result.
SCOTTY SS – INSTRUCTION MANUAL SECTION 2 INSTALLATION INSTRUCTIONS Scotty SS 10 Nov-05
SCOTTY SS – INSTRUCTION MANUAL SECTION 2 – INSTALLATION INSTRUCTIONS 2.1 Introduction to Installers Before installing this KERR SCOTTY SS Wood Furnace, please read the following instruction manual carefully. This unit is designed to be an add-on to a central heating furnace to provide complete central heating in medium sized well-insulated homes. Before installing be sure unit is properly sized for the intended application. Warranty does not cover misapplication of unit.
SCOTTY SS – INSTRUCTION MANUAL 2.3 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-today operation, and place for ease of fueling and cleaning. KERR recommends installation, if possible, in a central location in relation to the outlet registers and the use of large warm air ducts to improve heat distribution during a power failure.
SCOTTY SS – INSTRUCTION MANUAL Connect only to a flue or chimney capable of maintaining a negative draft of .05” w.c. at all times and conditions. 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.
SCOTTY SS – INSTRUCTION MANUAL 2.5 Clearances (Fig S202-1) The KERR SCOTTY SS Wood Furnace is to be installed in accordance with National Building Code or local regulations. Allowances front and rear must be made for cleaning and servicing. NOTE: Regardless of minimum clearances to combustibles for safety reasons, a minimum clearance of 30 inches (765 mm) should be allowed at the furnace rear for cleaning (due to length of cleaning rake) and access to smoke pipe.
SCOTTY SS – INSTRUCTION MANUAL 2.6 Add-On to Another Furnace (Fig S202-5B, Fig S202-5C) The KERR Wood Furnace may be installed very satisfactorily in conjunction with another furnace as tested by CSA under standard B365. In this installation the wood furnace is connected downstream in series with a new or the existing electric or oil furnace. The blower from the existing furnace provides the air circulation.
SCOTTY SS – INSTRUCTION MANUAL Items required: 1. Switching Relay R4222D 1013 (120 V Coil, 12 amp @ 120 Vac), or equivalent. 2. Junction box (4” x 4”) and cover. 3. Square extension box (4”x 4”gyproc extension). 4. Two plastic universal bushings or junction box connectors. 5. White wire (12”), two insulated spade connectors. 6. Black wire (6”), two insulated spade connectors. 7. Brown wire (12”), two insulated spade connectors. 8. Yellow wire (12”), two insulated spade connectors. 9.
SCOTTY SS – INSTRUCTION MANUAL 2.7 DUCT CONNECTION (Fig S202-1, Fig S202-2) See figure S202-11 for Approved Furnace Ductwork Configurations. See figure S202-12 for Prohibited Furnace Ductwork Configurations. Minimum cross-sectional area of ductwork from furnace should be approximately 160 square inches with equal or larger size for return air. The furnace must not be installed as a gravity system as the controls are not designed for this type of operation.
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) (b) (c) Drill hole in wood outlet plenum Level inclined manometer and adjust to zero, insert manometer tube (Pressure end) With all duct work and doors in place static pressure should measure 0.2 in (50 Pa) with blower running.
SCOTTY SS – INSTRUCTION MANUAL 2.8 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. The thermostat operates the damper motor to open and close the damper door thus allowing more or less air into the combustion area to control the fire.
SCOTTY SS – INSTRUCTION MANUAL 2.8.1 STATIC PRESSURE DROP TEST (Fig S202-4) After all connections are made and the ADD-ON installation is complete check the static pressure in the outlet plenum of the wood furnace. This is done with an inclined manometer, similar to the Dwyer Model 25, capable of reading 0.2” w.c. to 0.50” of water column. Procedure: 1 – Drill hole in wood outlet plenum as indicated, in fig. S202 - 4 2 – Level the inclined manometer, and adjust the zero.
SCOTTY SS – INSTRUCTION MANUAL 2.8.2 TEMPERATURE RISE TEST As an alternative to the static pressure test the installer may make adjustments on the basis of temperature measurements. For this test the wood furnace must be at full operating temperature. Procedure: 1. Take one air temperature T1 through a small hole in the front of the electric outlet duct. Make sure you leave the thermometer in the air stream long enough for the reading to stabilize. 2.
SCOTTY SS – INSTRUCTION MANUAL - An ADD-ON unit must only be connected to an oil furnace, duct system and chimney, which are in good operating condition. - DO NOT interconnect an add-on with duct elbow less than 6” (152 mm) inside radius. - CAUTION: MAINTAIN COMBUSTION AIR TO FURNACES – AIR STARVATION IS DANGEROUS. 2.10 Installers Final Checklist DUCTWORK INSPECTION 1. Furnace ducted properly? 2. Proper duct clearances maintained? FURNACE INSPECTION 1. DO NOT use firebrick in the furnace 2.
SCOTTY SS – INSTRUCTION MANUAL SECTION 3 ADD ON TO OIL FURNACE Scotty SS 23 Nov-05
SCOTTY SS – INSTRUCTION MANUAL SECTION 3 - ADD ON TO OIL FURNACE 3.0 ADD ON TO OIL FURNACE (Fig S202-1) Scotty SS DB-202A may be connected downstream of a new or existing oil furnace. The blower from the existing oil furnace provides the air circulation. The Scotty SS DB202A may only be connected downstream from an oil furnace having an input rating (on original name plate) of between 0.75 and 0.90 USGPH, or at least 1000 cfm. For details and required duct clearances see Fig. S202-1.
SCOTTY SS – INSTRUCTION MANUAL 3.2 Duct Connection – (Fig S202-2, Fig S202-4) See template packed in Scotty SS firebox for the dimensions and locations of permissible openings in the wood furnace casings for ducts, blower or emergency air. Make or enlarge the opening in the wood furnace casing exactly as identified for ADDON connection and on the appropriate side, trim the wood furnace insulation flush with cut opening.
SCOTTY SS – INSTRUCTION MANUAL 3.3 CONTROL SYSTEM 3.3.1 ADD-ON TO OIL CONTROL KIT “A” (Fig S202-2, Fig S202-5) Control kit “A” is required for ADD-ON to Oil installation of the KERR SCOTTY SS Wood furnace model DB-202A. ADD-ON to Oil – wiring diagram see Fig. S202-5 – layout diagram See Fig. S202-2 Kit “A” consists of the following: 1. L4064R1027 11” Primary Fan Limit Control (Wood Furnace) with mounting standoff. Fan “ON” – 140° F, Hi Limit – 280° F. – See description below. 2.
SCOTTY SS – INSTRUCTION MANUAL L4064R – Wood Furnace Fan/Limit Control – Fig. S202-2, 202-5 The L4064R fan and limit control is mounted in the plenum over the wood fired furnace. It controls the operation of the oil furnace blower and shuts down the fire damper if the circulating air temperature rises above a fixed upper limit. See Fig. S202-2 for location. Adjustable Set Points 1. “ON” is usually set to 140?F (60°C).
SCOTTY SS – INSTRUCTION MANUAL SECTION 4 ADD ON TO ELECTRIC FURNACE Scotty SS 28 Nov-05
SCOTTY SS – INSTRUCTION MANUAL SECTION 4 – ADD ON TO ELECTRIC FURNACE 4.1.1 NORTRON 21B15H – Series B Electric Furnaces (Fig S202-6) The Scotty SS is specifically approved as an ADD ON to the Nortron 21B15H – Series B Electric Furnaces. This manual shows the approved method of installation and the required elbow duct for furnace interconnection can be obtained from Kerr Controls Ltd. The Nortron FK120 – 120 VOLT KIT is not used to provide power to the wood furnace.
SCOTTY SS – INSTRUCTION MANUAL THAT THE BLOWER IN THE ELECTRIC FURNACE IS AT LEAST THAT USED IN 20 KW FURNACE. IMPORTANT – approved configuration for Scotty SS DB 202A Add-On to electric furnaces shown in section 4.2.1 of manual. 4.2 DUCT CONNECTIONS TO ELECTRIC FURNACE (Fig S202-6) Scotty SS DB-202A may be connected downstream of a new or existing electric furnace. The blower from the existing furnace provides the air circulation.
SCOTTY SS – INSTRUCTION MANUAL 4.2.2 MINIMUM DUCT SIZES Main Supply: 8” x 16” minimum Main Return: 8” x 20” minimum 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. 4.3 INSTALLATION SUMMARY (Fig S202-6, Fig S202-7, Fig S202-8) 1. 2. 3. 4.4 Install Scotty SS and Electric furnace as shown in Fig. S202-6 and S2027. Wire as shown in Fig. S202-8 Check pressure drop across Scotty SS as 0.
SCOTTY SS – INSTRUCTION MANUAL 4.5 ADD-ON TO ELECTRIC CONTROL KIT “E”(Fig S202-8, Fig S202-9) Control kit “E” is required for ADD-ON to Electric installation of the KERR SCOTTY SS Wood Furnace model DB-202A. Kit “E” consists of the following: 1. L4064R1027 11” Primary Fan Limit Control (Wood Furnace) complete with standoff bracket. Fan “ON” – 140° F, Hi Limit – 280° F. Check JUMPER REMOVED. See “Note” below. 2. M847A1031 Draft Damper Motor complete with chain and S hook.
Terms and Conditions of Warranty 1) The warranty is not assignable and rights pursuant to it are given only to the original purchaser of the furnace from an authorized retailer. 2) The warranty is null and void unless the original purchaser fully completes the warranty registration card and the card is received by Kerr Heating Products within 30 (thirty) days after installation of the furnace.
ATTENTION HEATING CONTRACTOR: THIS WARRANTY IS FOR THE ORIGINAL PURCHASER AND SHOULD BE GIVEN TO HIM/HER OR PLACED IN SIGHT NEAR THE WOOD FURNACE. SCOTTY SS 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.
