Related Manuals for Nature's Comfort GT-220
Summary of Contents for Nature's Comfort GT-220
- Page 1 I STALLATIO A D OPERATI G I STRUCTIO S FOR GT-220 DOW DRAFT GASIFICATIO O -PRESURIZED WOOD BOILER Made in the USA BUILT LIKE A TA K WITH LASER PRECISIO Revision 2009-1.1...
- Page 2 I TRODUCTIO Thank you and congratulations on the purchase of your new Nature’s Comfort GT-220 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 E Safety Precautions ..............5 B. Specifications ................4 F. 20 Year Limited Warranty, Treatment ......6 C. Clearance to Combustibles ..........4 G. Customer Warranty Card ........... 7 D. Boiler Dimensions ..............4 II. -
Page 4: General Information
I. General Information A. Terminology In This Manual a. Boiler: Refers to the Nature’s Comfort boiler you purchased b. Furnace: Refers to an indoor gas or oil fired unit which heats the air for your home. This would be your existing furnace. B. -
Page 5: E Safety Precautions
E. 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. Observe all safety stickers on the boiler. -
Page 6: 20 Year Limited Warranty, Treatment
(150ppm minimum of Nitrite) for your warranty to remain valid. Minimum initial mix ratio for the GT-220 is 1.5Qts. There is no maximum limit. Contact Nature’s Comfort or your dealer to obtain water treatment. -
Page 7: Customer Warranty Card
G. 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: ___________________________ Date of Installation: ___________________________ Dealer Purchased From: ____________________________________________________... -
Page 8: Best Outdoor Boiler Burn Practices
Use small pieces of split kindling together with crumbled newspaper and add larger pieces. For when starting a cold GT-220, open smoke bypass and leave open until water temp is at least 170F so the firebrick can get hot enough to start gasification. To maintain the best operating conditions, set the aquastat between 170-190F with a 3 degree differential (see page 10). -
Page 9: Heating Domestic Hot Water
Too low of moisture content (very dry, rotten, old wood) burns rapidly and inefficiently. F. Heating the Home The GT-220 is designed to save energy and provide the most comfortable heating available. It heats your home by heating a firebox, refractory channel and heat exchanger surrounded by a steel tank filled with water. -
Page 10: T-Stat, Controls, Overriding Timer Relay
Please see page 18 for an example wiring layout. The GT-220 uses a hot water thermostat (aquastat) with a thermocouple that is inserted into a brass drywell for sensing the water temperature of the unit. When the temperature falls below the... -
Page 11: Controls & Pex Pipe Connections
Controls & Pex Pipe Connections Boiler shown is set up as a single-zone. Single-Zone setup Porting for a 2 zone is provided. (Additional pumps & valves are available from Nature’s Comfort and can be 1. Power from home feeds the lower outlet ordered installed as well.) for control power through the main plug to the upper outlet and controls. -
Page 12: Insulated Pex Pipe
K. Insulated Pex Pipe We highly recommend the use of insulated pex pipe for the best heat transfer possible from the boiler to your home. 4” triple wrap & 5” foam insulated pipe is available for purchase through Nature’s Comfort or your dealer. III. -
Page 13: Concrete Block Footing
B. Concrete Block Footing A full concrete pad or footings just under the feet are not necessary for the installation for your boiler, but is recommended to prevent frost heaving. Four concrete footing blocks 8” X 16” X 4” will suffice if desired. -
Page 14: Wiring The Boiler
L. Wiring the boiler A qualified electrician must wire this boiler in accordance with the National Electrical Code. A dedicated 20amp, 115vac circuit needs to be installed to power the lower outlet. Land power & neutral wires to the back of the lower outlet and wire nut the ground wire to the green wire that is fastened alongside the ground of the outlet. -
Page 15: Adding Bypass Valves
2. Extra pex fittings can be purchased from your local hardware or plumber. The pex pipe connected to the bottom of the pump runs to the house and normally runs to the heat exchanger installed in your furnace or a plate heat exchanger for a hydronic radiant system. - Page 16 Measure the width of the heat exchanger (Dimension A in next diagram). Measure the thickness of the heat exchanger (Dimension C). Start by cutting a hole in the side of your ductwork the thickness of the heat exchanger (Dimension C) and the full length of the ductwork (usually Dimension A). WARNING! Metal edges are very sharp! Wear protective gloves and use caution! Slide the heat exchanger into the hole for a test fit.
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Page 17: Installing Heat Exchanger In Small Plenum
Install the braces the proper width apart as shown above (Dimension C). Secure them in place using pop rivets or self tapping screws. You will need four pieces, two on the top and bottom. Slide the heat exchanger carefully into the plenum to check the fit again. Once proper fitting is verified, you can seal off the ends of the heat exchanger and the hole you made in the plenum with foil tape made for ductwork. -
Page 18: Bleeding The Heat Exchanger
Slide the heat exchanger through the front hole to the back hole so it protrudes out the front and back of the plenum. Ideally the core of the heat exchanger will be entirely within the plenum. Crimp the sheet metal to the edge of the heat exchanger. This is item G in the diagram on page 16 using channel-lock pliers to crimp. -
Page 19: Other Hook Ups - Heating Domestic Water, Pools And Spa's
IV. Other Hook Ups - Heating Domestic Water, Pools and Spa’s A. Layout of Water Lines for Sidearm The hot line from boiler goes into the top of sidearm. This creates twice the domestic water flow through the sidearm as opposed to coming in at the bottom. Hookups to the domestic side must be connected to drain and pressure relief ports. -
Page 20: Heating A Pool Or Spa
C. Heating a Pool or Spa Please contact your local pool/spa contractor if this boiler is to be used to heat a pool or spa. You must consult with a pool/spa specialist since the chemicals used in a pool/spa are destructive to your boiler. A stainless steel (or 90/10 copper/nickel alloy) tube &... -
Page 21: Maintenance
V. Maintenance A. Cleaning Ash, Catalytic Converter, Heat Exchanger Tubes Moisture combined with ash will eat through a boiler in short order and ash corrosion is NOT covered under warranty. Perform the following when there are enough coals to build another fire, but not so many that the fire will burn out of control. -
Page 22: Disclaimer
Moisture from condensation or rain must not be allowed to accumulate in the firebox, refractory channel, heat exchanger, or ash pan during the off-season. Failure to perform preventive maintenance may result in severe corrosion and major damage to the boiler. This is NOT covered under warranty. -
Page 23: Trouble Shooting
VII. Trouble Shooting Problem Cause Solution Boiler does not come up to temperature. Green or soft wood is being used, Use dry, hard wood The boiler is at temperature and is Poor water circulation (excess fittings, too Change to a larger pump, use sweeping bends steaming small of pipe, improper installation) instead of 90’s... -
Page 24: Parts List
Built Like A Tank With Laser Precision Page of 24...
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