Polar Furnace G2-PLUS Owner's Manual
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Polar Furnace G2-PLUS Owner's Manual

G-class outdoor wood furnace
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G-Class
Heater Setup
Outdoor Wood Furnace
Owner's Manual for G2, G2-Plus & G3
Wood Moisture Requirements
See Section 8.2 of this Manual
1
For service and support on your Polar Furnace contact your local dealer

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Gilles
February 6, 2025

I do not see in the drawing the **** motor bearing details when they need replacement. Thanks

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Summary of Contents for Polar Furnace G2-PLUS

  • Page 1 G-Class Heater Setup Outdoor Wood Furnace Owner’s Manual for G2, G2-Plus & G3 Wood Moisture Requirements See Section 8.2 of this Manual For service and support on your Polar Furnace contact your local dealer...
  • Page 2 ASTM E 2618-10 and/or EPA Method 28 WHH or EPA Method 28 WHH-15 and ASTM E2515-2011. The G-Class G2-Plus indoor/outdoor hydronic heater by Polar Furnace is also listed by Intertek to the applicable portions of the following standard: CSA B415.1-10. The G-Class indoor/outdoor hydronic heater by Polar Furnace is listed by CSA group to the applicable portions of the following standards: UL 2523 Standard for Solid Fuel-Fired Hydronic Heating Appliances, Water Heaters and Boilers and CAN/CSA-B366.1-11 Solid-Fuel-Fired Central Heating Appliance.

  • Page 3: Warranty Details

    Polar Furnace Mfg. Inc. (The Company) warrants the water jacket and fire chamber of the heater identified herein to be free from leaks during normal use for a period of 4 (four) years from the date of original purchase to the original purchaser of this heater.
  • Page 4 Your dealer may charge you for a service call to do warranty work. Parts will be replaced on an even exchange basis. Polar Furnace heaters are not intended to be the only source of heat. A backup system should be in place to prevent resultant damage due to a lack of heat.

  • Page 5: Warranty Activation Form

    Dealer’s Rep. Signature: ___________________________ The dealer rep. and I have inspected my new Polar Furnace heater and reviewed all items on the delivery checklist. The dealer rep. has reviewed the operator’s manual with me and has thoroughly instructed me on the equipment herein.

  • Page 7: Table Of Contents

    Warnings & Cautions Responsible Ownership Heater Components Safety Heater Setup Heater Controls Operating the Heater Maintaining the Heater Water Testing & Treatment Heater Model Specifications Electrical Diagrams G-Class Parts Plumbing For service and support on your Polar Furnace contact your local dealer...

  • Page 8: Introduction

    The Warranty Activation form is located on page 5. hesitate to contact your local Polar Furnace dealer or This form must be thoroughly completed and the contact Polar Furnace directly.

  • Page 9: Warnings & Cautions

    2.10 !!WARNING!! Installation should be completed by appropriately 2.5 !!WARNING!! qualified personnel. Burn wood only! Dry seasoned wood is preferable. For service and support on your Polar Furnace contact your local dealer...
  • Page 10 Some level of carbon monoxide is being generated in all stages of the combustion process regardless of the fuel. Continued on next page..Owner’s manual for Polar Furnace models: G-2 & G-3 Owner’s manual for Polar Furnace models: G-2 & G-3...

  • Page 11: Responsible Ownership

    • Water can be piped a long distance with minimal heat loss. This is a good option to avoid smoke • ALWAYS HIRE APPROPRIATELY QUALIFIED related problems. INSTALLERS! • Don’t burn garbage. Burn only well-seasoned firewood. For service and support on your Polar Furnace contact your local dealer...

  • Page 12: Heater Components

    Rear Top Access Panel—Suction Fan Access, Electrical Access Overflow/Fill Pipe Lifting Hook Main Outer Door Loading Door Ignition Door Front Bottom Cleanout Door Owner’s manual for Polar Furnace models: G-2 & G-3 Owner’s manual for Polar Furnace models: G-2 & G-3...

  • Page 13: Safety

    For service and support on your Polar Furnace contact your local dealer...

  • Page 14: Heater Setup

    • Insulated chimney pipe extension (total of at least Front 24” 2’ of extension. Either 1pc x 2’ or 2pcs x 1’). Back 6” Left Side 1” • Chimney rain cap. Right Side 6” 2” Chimney 6” Owner’s manual for Polar Furnace models: G-2 & G-3...

  • Page 15: Chimney Requirements

    All chimneys and connections must conform to For service and support on your Polar Furnace contact your local dealer...
  • Page 16 Boiler Solutions will test your water and make a • is not discolored determination if your water supply is suitable for use or not. • does not discolor after sitting in a container for a number of days. Owner’s manual for Polar Furnace models: G-2 & G-3...
  • Page 17 “FULL” zone (See Section 6.11). Note: Check the water level daily during the first few weeks after the heater is installed and used. For service and support on your Polar Furnace contact your local dealer...
  • Page 18 When you notice condensation inside the fan housing, the following steps can be taken to stop the condensation. Follow these steps in numerical order and be sure to rectify item 1 before continuing to the next item: Owner’s manual for Polar Furnace models: G-2 & G-3...
  • Page 19 SECTION 6: HEATER SETUP G-Class Foundation Drawing Diagram 6.12–Foundation Pad Recommendations For service and support on your Polar Furnace contact your local dealer...

  • Page 21: Heater Controls

    (Not SHOWN—located inside rear top access panel). Switches fans Aquastat off if controller fails and boiler overheats. Control (Not SHOWN—located inside rear top access panel). Controls Aquastat when combustion starts and stops. For service and support on your Polar Furnace contact your local dealer...
  • Page 22 Place the new fuse in position and push the tab operation. The control aquastat should not be set back into position. lower than 180˚F. Owner’s manual for Polar Furnace models: G-2 & G-3...
  • Page 23 Opens the air gate when the combustion fans turn on. Gates will open to Actuator the position set by the Gate Adjustment Lever. Air Gates open to the amount set on the Gate Adjustment Lever when Air Gate the actuator rotates. For service and support on your Polar Furnace contact your local dealer...

  • Page 24: Operating The Heater

    As a general rule wood that is cut to length, Diagram 8.2–Seasoned, Split Wood: checking visible, indicates wood has been split and stacked under a roof without side walls for one year will usually season to within the acceptable seasoned. Owner’s manual for Polar Furnace models: G-2 & G-3...

  • Page 25: Wood Burning

    4. Fill the primary fire chamber half full with regular pieces of firewood. Stack the wood lengthwise into the fire chamber. Seasoned wood burning is better wood burning! For service and support on your Polar Furnace contact your local dealer...
  • Page 26 Lay the heat output will be reduced. first few pieces into the bottom of the fire chamber Flue Brush Small Ash Scoop Poker Small Ash Tool Ash Shovel Diagram 8.5–Cleaning Tools Owner’s manual for Polar Furnace models: G-2 & G-3...

  • Page 27: Disposal Of Ashes

    If you notice ash at the bottom of the fire chamber is as a cushion when adding wood. wet or moist, immediately stop using the heater for the For service and support on your Polar Furnace contact your local dealer...
  • Page 28 Get dry 8.12.1 Air Gates Location wood. The primary and secondary air gates are located inside the rear bottom access panel (Diagram 4.1, Item 8). Owner’s manual for Polar Furnace models: G-2 & G-3...
  • Page 29 For service and support on your Polar Furnace contact your local dealer...

  • Page 30: Maintaining The Heater

    HAND PROTECTION IS STRONGLY remove the quick pins to remove the turbulators. RECOMMENDED. FINE WHITE POWDERY Brush until clean. ASH BECOMES AIR BORNE EASILY. RESPIRATORY PROTECTION IS STRONGLY RECOMMENDED. Owner’s manual for Polar Furnace models: G-2 & G-3...
  • Page 31 For service and support on your Polar Furnace contact your local dealer...
  • Page 32 Before removing/servicing the fan, disconnect power to the heater. Ensure that there is no wood burning in the primary fire chamber and that the fan blade has cooled Diagram 9.2–Fan Connnectors adequately. Catches Owner’s manual for Polar Furnace models: G-2 & G-3...
  • Page 33 9.7 Intentionally Left Blank (See picture below) If the plug doesn’t seem to fit, try turning the connector 180 degrees. Diagram 9.3–Fan Removal For service and support on your Polar Furnace contact your local dealer...
  • Page 34 (Item # 16, Diagram 4.1) G3 Part # 100047 Replace when any area deteriorates more than 0.5” from original shape. Part #: 100089 Owner’s manual for Polar Furnace models: G-2 & G-3 Owner’s manual for Polar Furnace models: G-2 & G-3...
  • Page 35 Consult with your dealer or the factory to correct this as soon as possible. For service and support on your Polar Furnace contact your local dealer...

  • Page 36: Water Testing & Treatment

    Water can be drawn from the water jacket at the water level sight gauge. Open the valve and unclip the clear plastic tube from the holder and bend the clear tube downwards. Let water run from the tube for 10 Owner’s manual for Polar Furnace models: G-2 & G-3...

  • Page 37: Heater Model Specifications

    Min. to Max. Ambient ˚C/˚F -35/-31 to 32/90 -35/-31 to 32/90 -35/-31 to 32/90 Operating Temp. Voltage/Amps 120/1.86 120/1.86 120/2.74 Watts (Min./Max.) 88/214 88/214 189/316 *Specifications subject to change without notice For service and support on your Polar Furnace contact your local dealer...

  • Page 38: Electrical Diagrams

    Max Speed 110 Power Common Outlet Aux High Speed Spare 110 Power Supply ECM Suction Fan - 2 Speed Switch Low Speed Rev 1.6 Rev 2.3 04/14 Diagram 12.1—G-Class Wiring Schematic Owner’s manual for Polar Furnace models: G-2 & G-3...

  • Page 39: G-Class Parts

    Always include your furnace serial# when ordering replacement parts. The serial # can be found on the silver CSA label located inside the rear top access panel. Diagram 13.1—StrongWall Liner For service and support on your Polar Furnace contact your local dealer...
  • Page 40 SECTION 13: G-Class Replacement Parts Diagram 13.2—Air Gate Assembly Owner’s manual for Polar Furnace models: G-2 & G-3...
  • Page 41 SECTION 13: G-Class Replacement Parts Diagram 13.3—G2 Ceremics Assembly Diagram 13.4—G2-Plus Ceremics Assembly For service and support on your Polar Furnace contact your local dealer...
  • Page 42 SECTION 13: G-Class Replacement Parts Diagram 13.5—G3 Ceremics Assembly Owner’s manual for Polar Furnace models: G-2 & G-3 Owner’s manual for Polar Furnace models: G-2 & G-3...
  • Page 43 SECTION 13: G-Class Replacement Parts Diagram 13.6—Housing Components For service and support on your Polar Furnace contact your local dealer...
  • Page 44 SECTION 13: G-Class Replacement Parts Diagram 13.7—Fan Assembly Owner’s manual for Polar Furnace models: G-2 & G-3...

  • Page 45: Plumbing

    14.1.4 Aquastat Settings with Connect-EZ When the Connect-EZ assembly is installed the control aquastat should be set to 190˚F with a 5 degree differential. Diagram 14.1–Connect-EZ Manifold Assembly For service and support on your Polar Furnace contact your local dealer...
  • Page 46 Differentials as high as 40 F are acceptable on G-Class furnaces equipped with the Supply/Return Manifold. Consult with your dealer or the factory before selecting a pump for your distribution loop(s). Owner’s manual for Polar Furnace models: G-2 & G-3...

  • Page 47: Safety Instructions

    (Diagram 14.1). Inspect the valve internal components before each heating season or at least once a year. Every 2 years replace Diagram 14.3–Distribution Pipe Finishing Duct For service and support on your Polar Furnace contact your local dealer...
  • Page 48 Consult with your dealer and/or local heating professionals to create a hydronic heat distribution system best suited to your requirements. Diagram 14.5–Boiler Protection Valve Cut-Away Diagram 14.7–Valve Wrench Owner’s manual for Polar Furnace models: G-2 & G-3...
  • Page 49 SECTION 14: Plumbing Diagram 14.8– Open System Basic Install Diagram 14.9– Closed System Basic Install For service and support on your Polar Furnace contact your local dealer...
  • Page 50 SECTION 14: Plumbing Backup Boiler Diagram 14.10– Closed System Large System/ Multiple Stories Install Backup Boiler Diagram 14.11– Multiple Buildings Install Owner’s manual for Polar Furnace models: G-2 & G-3...
  • Page 51 Your Notes __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ For service and support on your Polar Furnace contact your local dealer...
  • Page 52 __________________ Your Notes __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________ Owner’s manual for Polar Furnace models: G-2 & G-3...
  • Page 54 Polar Furnace Mfg. Inc. Box 159. Sperling, Manitoba. R0G 2M0 For service and support on the Polar Furnace heater, contact your local dealer Contact factory support by sending an email to: support@polarfurnace.com Printed in Canada Revision 6.0 ( July 2017)

This manual is also suitable for:

G2G3

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