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Installation and Operating Manual For
GT-6000 Downdraft Gasification
Non-Pressurized Outdoor Wood Boiler
Manufactured by Nature's Comfort LLC.
Made In The USA
Built Like A Tank
With Laser Precision
Full color and French manual available online at: / Couleur et manuel en français est disponible en ligne à:
www.naturescomfortllc.com
Revision 2012-1.3
Tested May 2012 to CSA-B366.1-2011 & UL 2523-2009
SAVE THESE INSTRUCTIONS!
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Table of Contents
Related Manuals for Nature's Comfort GT-6000
Summary of Contents for Nature's Comfort GT-6000
- Page 1 Installation and Operating Manual For GT-6000 Downdraft Gasification Non-Pressurized Outdoor Wood Boiler Manufactured by Nature’s Comfort LLC. Made In The USA Built Like A Tank With Laser Precision Full color and French manual available online at: / Couleur et manuel en français est disponible en ligne à: www.naturescomfortllc.com...
- Page 2 I TRODUCTIO Thank you and congratulations on the purchase of your new Nature’s Comfort GT Series High Efficiency Downdraft Gasification boiler! With the purchase of this Nature’s Comfort boiler, you can now appreciate the high degree of craftsmanship and reliability that are a result of every boiler being carefully hand-built as well as taking control of heating your home.
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Page 3: Table Of Contents
Table of Contents I. General Information A. Terminology ..................4 D. Safety Precautions ..............5 B. Clearance to Combustibles Required ........4 E. Controls & Plumbing Connections ......... 6 C. Boiler Dimensions & Specs ............4 F. Heating the Home ..............7 II. Installing the Boiler A. -
Page 4: General Information
115 VAC, 2A max. Chimney: 6” inside diameter GT-6000 250,000 BTU, 250-gallon water tank, 6,000 sq ft.* 45" x 78" x 83" tall, 3,000 pounds *Will heat up to (x) sq ft (This must include all heated areas of home as well as basement.) with proper installation, properly insulated building and... -
Page 5: Safety Precautions
Safety Precautions Do not operate this equipment for anything other than its intended purpose or for anything other than in accordance with the instructions contained in this manual and all other instructions accompanying the boiler. It is important to observe safety precautions to protect yourself and others from possible injury. -
Page 6: Controls & Plumbing Connections
Controls & Plumbing Connections The GT boiler uses a hot water thermostat (aquastat) with a sensor that is inserted into a brass drywell for sensing the water temperature of the unit. When the temperature falls below the differential setting on the aquastat, the blower turns on and the damper actuator opens, feeding oxygen to burn wood in the firebox, heating the water jacket and remaining on until the water temperature in the boiler reaches the set point of the aquastat. -
Page 7: Heating The Home
Heating the Home The GT series boiler saves energy and provides the most comfortable heating available. It heats the home by burning seasoned hardwood in 2 stages to heat a firebox (1 burn stage), refractory channel (2 burn stage) and heat exchanger tubes surrounded by a steel tank filled with water. The boiler is non-pressurized with an atmospheric vent and includes an easy-to-read water jacket float indicator. -
Page 8: Installing The Boiler
III. Installing Boiler Installation is to be performed by a qualified installer and shall comply with all the requirements of the authority having jurisdiction over the installation. A. Location of Boiler The GT boiler must be located to comply with the clearance requirements. Keep the firebox door positioned so as not to point toward a structure so all fire danger is removed from the home. -
Page 9: Chimney, Extensions & Rain Cap
B. Chimney: A 6” stainless steel rain cap must be purchased separately for installation and can be obtained from Nature’s Comfort or your dealer. The person operating the unit is responsible for operating in a manner that does not create a public nuisance condition. -
Page 10: Plumbing Hookup
D. Plumbing Hook Up Plumbing connections should be well insulated after installation. Cover bottom access holes as well. Minimum pipe size permitted is 1”. Install the outgoing pex line on the pump flange that is already mounted to the lower end of the circulation pump. Install the return line on the 1” 90 located to the left of the rear upper heat exchanger tube access cover. - Page 11 Door adjustment is done at the factory but may be required again after installation and before starting a fire as the seals compress over time. See maintenance section for complete adjustment and care instructions. Installation and placement of (12) GT-6000 Butterfly Air Spinners Left Spin (qty 6) Right Spin (qty 6)
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Page 12: Forced Air Systems -Thermostat Wiring
G. Forced Air Systems - Thermostat Wiring The next example drawings are for controlling the blower on a forced air system independently of the existing heat source (i.e. propane, electric, fuel oil, etc). Nature’s Comfort can provide custom diagrams for other types of control setups as well upon request. Use this example diagram if you have a typical, basic 4 wire system: Use the example drawing below if you have a 2 wire system or the thermostat is the advanced computerized type that communicates back and forth between the furnace (typically found on heat... -
Page 13: Installing A Water-To-Air Heat Exchanger
H. Adding Bypass Valves Adding a bypass valve system (3 valves, 2 T’s and unions) at each heat exchanger is a good idea so that if there is a potential problem such as a stopped up heat exchanger, it can be diagnosed & serviced easily as well as being used for a summer bypass as explained in the “operation”... -
Page 14: Installing In A Small Plenum
Slide the heat exchanger into the hole for a test fit. Ideally the header and tubes (F) should stick out of the plenum. While test fitting try to determine how much tape is needed around the frame of the heat exchanger to seal and keep air from flowing around it. -
Page 15: Adjusting Plenum Air Flow
Crimp the sheet metal to the edge of the heat exchanger (item G) using channel-lock pliers. This not only forms a virtually airtight seal, but also supports the heat exchanger as well. K. Adjusting Plenum Air Flow The motors on most force air furnaces have three speeds to provide various rates of air movement. Please consult a local furnace specialist if you want to change the airflow of an existing furnace system. - Page 16 Page 16 of 30...
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Page 17: Filling Gt Boiler With Water
M. Filling the GT Boiler with Water Once all piping connections are complete, flush about 20 gallons of water into the float stack and drain, repeating until it comes out clean. Close drain valve and pour Nature’s Comfort boiler treatment in – required for warranty. Fill the boiler with a hose through the float stack or if you have installed a fill line, open the valve and allow it to fill, stopping once the float starts to rise. -
Page 18: Heating A Pool Or Spa
B. Heating a Pool or Spa Please contact a local pool/spa specialist if this boiler is to be used to heat a pool or spa. A stainless steel (or 90/10 copper/nickel alloy) tube & shell water-to-water heat exchanger must be used to transfer heat from the boiler to a pool or spa since the chemicals used in a pool/spa are destructive to the boiler. -
Page 19: Operation
IV. Operation A. Wood Requirements 20% moisture content or lower is required for a GT boiler to achieve proper gasification. Using unseasoned (“wet” or “green”) wood causes cooler burning temperatures preventing gasification and severely reducing efficiency, causing the boiler to plug up with ash. Only burn wood that has been cut, split and seasoned for 12-24 months, sheltered from rain and snow. -
Page 20: Loading Wood
C. Loading Wood Wear safety glasses and use heavy gloves. Caution! Doors, covers, coals & ashes are hot! Caution! Never open fuel door without first turning off the boiler at the front or rear switch and allow idling for at least 10 minutes before opening or flame spillage may occur! Caution! Flammable gases fill the firebox when idling. -
Page 21: Maintenance
V. Maintenance A. Cleaning Wear heavy gloves and clothing and safety glasses as metal, firebrick and ashes will be hot. Moisture combined with ash will eat through a boiler in short order and ash corrosion is NOT covered under warranty. Clean ash out frequently enough to prevent any “caking”. -
Page 22: Actuator Backup Battery
experience on how often cleaning is necessary (varies by operation, heating demand and wood quality). Creosote occurs on a larger scale when there is too much moisture content in the wood being used (green, un-seasoned wood) or from extended idling during milder weather. D. -
Page 23: Pump
Installing Rope On Bolted Covers (1” round or 1/2” round) Upper covers: Install 1” round rope seal with a ½” bead of high temperature caulk behind it to glue the rope in place. Make sure to push the rope to the outside of the corners to mate properly with the jamb (do not stretch the rope) and cut the joint to be compressed after inserting all the way around for a custom fit. -
Page 24: End Of Season Care
causing oscillation (vibration). Scale buildup happens if the water has too much hardness and is something that is greatly accelerated if the water does not have the proper amount of treatment. Vibration can lead to fracturing and breaking of the shaft and is not covered under warranty. Scrubbing or ticking noise: Results from scale build up or the bearings and/or shaft wearing out allowing the rotor to come in contact with one side of the canister. -
Page 25: Going Away
Going Away When going away during freezing weather and no one will be keeping the boiler going, turn the backup heat system on, the rear control switch off and keep the circulation pump running. The boiler will now operate in reverse heat being kept above freezing by the backup system eliminating the need to otherwise drain the boiler, invest in anti-freeze or find someone to load wood. -
Page 26: Trouble Shooting
Trouble Shooting Problem Cause Solution Boiler does not come up to temperature. Green or soft wood is being used, Use dry, hard wood Coals are not being pushed over holes Keep hot coals pushed over holes in floor before loading The boiler is at temperature and is Poor water circulation (excess fittings, too Change to a larger pump, use min 1”... -
Page 27: Copy Of Safety Labels
Copy of Safety Labels Page 27 of 30... -
Page 28: Warranty
Nature's Comfort's wood boilers are not meant to be your sole source of heat. It is the responsibility of the owner to have a backup system in place. If you do not have a backup source of heat you are at risk of damage due to lack of heat. Nature's Comfort will not warranty or be responsible for any damage caused by lack of heat at your premises or for any cost incurred from using a backup heat system in the event of a boiler failure. -
Page 29: Warranty Cards
Customer Warranty Card Please fill in the following information and keep for future reference. ___________________________________ Name: (First) (Last) ___________________________________ Address: (Street) ___________________________________ (City) (State) (Zip) _________ ________________________ Phone: (Area Code) (Number) Model & Serial Number: ____________________________ Date of Purchase: ____________________________ Dealer Purchased From: __________________________________________________ (name) (Phone number) - Page 30 Warranty Registration Card - To be mailed in All fields must be filled out Name: _________________________________________________________________ (First) (Middle) (Last) Address: _________________________________________________________________ (Street) _________________________________________________________________ (City) (State) (Zip) Phone Number: ________________ ___________________________ (Area code) (Number) E-mail Address: _______________________________________________ (For contact purposes only) Model &...
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