Page 2 - Table of Contents
2 USSC TABLE OF CONTENTS .............................................................................................. 2SAFETY PRECAUTIONS ........................................................................................... 3SPECIFICATIONS .......................................................
Page 3 - Safety Precautions
USSC 3 Safety Precautions IMPORTANT: Read this entire manual before installingand operating this product. Failure to do so may resultin property damage, bodily injury, or even death.Proper installation of this furnace is crucial for safeand efficient operation. Install vent at clearances specified b...
Page 4 - Specifications; Heating Specifications
4 USSC Specifications Heat Output 1 50,000 to 75,000 BTU/hr. Heating Capacity 2 800 - 2,000 sq. ft. Fuel Burn Rate 3 2.0 - 6.0 lbs./hr. Burn Time (lowest setting) 125 hours continuous Hopper Capacity 250 lbs Heating Specifications Height 47 in. Width 25-1/2 in. Depth 35-1/2 in. Weight 350 lbs. Dimen...
Page 5 - Fuel Considerations; WOOD PELLETS; furnace
USSC 5 Fuel Considerations SHELLED CORN (Dry, preferably corn with 11% or less moisture content) • • • • • • • Optimum moisture content of corn should be 11% or less. Wet corn will rapidly deteriorate furnace components, reduce efficiency and void all warranties. Purchase a moisture tester if in dou...
Page 6 - INSTALLATION OPTIONS; Installation; FLOOR PROTECTION
6 USSC INSTALLATION OPTIONS Read this entire manual before you install and use your Multi-Fuel Furnace. Failure to follow instructionsmay result in property damage, bodily injury, or even death! (See specific installation details for clearances and other installation requirements) As a Primary Furna...
Page 7 - CLEARANCES
USSC 7 Installation CLEARANCES NOTE: Distance on the left-hand side of your Multi-Fuel Furnace is set at 24 inches for suitable access to the control panel and for fuel loading. This distance may be less, but not less than 7 inches.
Page 8 - VENTING REQUIREMENTS; MAXIMUM VENTING DISTANCE; PELLET VENT INSTALLATION
8 USSC Installation VENTING REQUIREMENTS Install vent at clearances specified by the vent manufacturer. Do not connect the pellet vent to a vent serving any other appliance or furnace. Do not install a flue damper in the exhaust venting system of this unit. The following installation guidelines must...
Page 9 - VENT TERMINATION CLEARANCES:
USSC 9 Installation VENT TERMINATION CLEARANCES: A ----- Minimum 4-foot clearance below or beside any door or window that opens. B ----- Minimum 1-foot clearance above any door or window that opens. C ----- Minimum 3-foot clearance from any adjacent building. D ----- Minimum 7-foot clearance from an...
Page 10 - THROUGH THE WALL INSTALLATION; THROUGH THE ROOF/CEILING INSTALLATION
10 USSC Installation THROUGH THE WALL INSTALLATION (RECOMMENDED INSTALLATION) To vent the unit through the wall, connect the pipe adapter to the exhaust motor adapter. If the exhaust adapter is at least18-inches above ground level, a straight section of pellet vent pipe can be used through the wall....
Page 11 - PRIMARY FURNACE
USSC 11 Installation PRIMARY FURNACE SECONDARY (ADD-ON) FURNACE When installed as a seondary furnace, a Duct Damper must be installed between the air discarge of the Pellet furnaceand the primary (Gas, Electric, etc.). Damper must be an electric style damper in order to connect to the multi fuelfurn...
Page 12 - HOW YOUR FURNACE WORKS; DAMPER CONTROL ADJUSTMENT; Operation
12 USSC Do not operate your furnace with the viewing door open. The auger will not feed fuel under thesecircumstances and a safety concern may arise from sparks or fumes entering the room. A working smoke detector must be installed in the same room as this product. Hopper Lid must be closed during o...
Page 13 - CONTROL PANEL
USSC 13 Heat Range Room Fan Draft Fan Aux. Auto Manual CONTROL PANEL Turning the furnace OFF/ON, as well as adjustments for the fuel feed rateand room fan speed are performed by pressing the appropriate button(s)on the control panel which is located on the lower left-hand side of your American Harve...
Page 14 - SHUT DOWN PROCEDURE; UNIT PREPARATION
14 USSC SHUT DOWN PROCEDURE Press the “OFF” button on the control panel to put the furnace in shut down mode. At this time, the red light above the “OFF” button will illuminate. Once this is done, the auger will stop feeding fuel, but the room air blower(s) and draft fanwill continue to operate. Whe...
Page 15 - Maintenance; DAILY OPERATION; EXHAUST SYSTEM
USSC 15 Maintenance Operation DAILY OPERATION The hopper and furnace top will be hot during operation; therefore, you should always use some type ofhand protection when refueling your furnace. Never place your hand near the auger while the furnace is in operation. In the event of a power outage , th...
Page 17 - Parts Diagram
Page 18 - Parts List
18 USSC Parts List 1 5 9 8 10 12 7 4 6 11 3 2 Item Part No. Title Qty. 1 25507 Feed Door 1 2 25492 Handle, Door 1 3 83506 3/8 x 1 1/4 Roll Pin 1 4 891053 Door Glass w/o Logo 1 5 88066 5/8” Rope Gasket 4.5 ft 6 88087 Glass Gasket (1 x 1 3/16) 3 ft 7 25520 Bottom Glass Retainer 1 8 25521 Top Glass Ret...
Page 19 - Wiring Diagram
Page 20 - Trouble Shooting
20 USSC Trouble Shooting PROBLEM CAUSE: Not enough combustion air; Fuel has to much moisture. Viewing window becoming black shortlyafter start-up. • Adjust the air damper to a more open position. • Use a fuel with less moisture content PROBLEM CAUSE: Not enough combustion air; Fuel has to much moist...
Page 21 - Error Codes
USSC 21 Error Codes Below is a chart describing the Error Codes that might be displayed if your unit has the Type B controller. Error Code Err1 Err2 Err3 Err4 Err5 Err6 Err7 Err8 ErrorDescrption The high limit temperature sensorhas tripped. Furnace ran out of fuel during normaloperation. The furnace...
Page 22 - Notes
Page 24 - HOW TO ORDER REPAIR PARTS
24 USSC THIS MANUAL WILL HELP YOU OBTAIN EFFICIENT, DEPENDABLE SERVICE FROM YOUR KING OR ASHLEY, AND ENABLE YOU TO ORDER REPAIR PARTS CORRECTLY. KEEP THIS MANUAL IN A SAFE PLACE FOR FUTURE REFERENCE. WHEN WRITING, ALWAYS GIVE THE FULL MODEL NUMBER WHICH IS ON THE NAMEPLATE ATTACHED TO THE HEATER. WH...