Table of Contents
Related Manuals for Nature's Comfort NCB-80
Summary of Contents for Nature's Comfort NCB-80
- Page 1 Installation and Operating Manual For 2012-2015 NCB-80 Non-Pressurized Outdoor Wood Boiler Manufactured by Nature’s Comfort LLC. Made in the USA www.naturescomfortllc.com Built Like A Tank With Laser Precision SAVE THESE INSTRUCTIONS Revision 2015-1.6...
- Page 3 INTRODUCTION Thank you and congratulations on the purchase of your new Nature’s Comfort Outdoor Boiler! With the purchase of this Nature’s Comfort Outdoor 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 5: Table Of Contents
Table of Contents I. General Information A. Terminology ................6 D. Safety Precautions ..............7 B. Clearance To Combustibles Required ......6 E. Controls & Plumbing Connections ......... 8 C. Boiler Dimensions & Specs ..........6 F. Heating The Home ..............9 II. -
Page 6: General Information
115 VAC, 2A max. Chimney: 4” inside diameter NCB-80 115,000 BTU, 80-gallon water tank - 2,000 sq ft.* 54" x 46" x 67" tall - 1,100 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 7: 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 8: Controls & Plumbing Connections
Controls & Plumbing Connections The NCB 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 9: Heating The Home
(Pump not included, Light N/A if solar light was included) Heating the Home The NCB boiler saves energy and provides the most comfortable heating available. It heats the home by burning seasoned hardwood to heat a firebox 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 10: Installing The Boiler
III. Installing The 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 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 11: Chimney, Extensions & Rain Cap
B. Chimney: A 4” stainless steel rain cap with spark arrestor must be purchased separately for installation and can be obtained from Nature’s Comfort. If installing extensions, use supports as directed by pipe manufacturer. It is recommended that the boiler be located with due consideration to the prevailing wind direction. -
Page 12: 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 13 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, don’t have a blower-only function or the thermostat is the advanced computerized type that communicates back and forth between the furnace (typically found on heat pump systems).
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Page 14: Adding Bypass Valves
G. 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 15: 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 16: Adjusting Plenum Air Flow
Slide the heat exchanger through the front hole to the back hole so it protrudes out the front and back of the plenum the same amount. Ideally the core of the heat exchanger will be entirely within the plenum. 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. - Page 17 As shown in the previous drawing, the two systems are totally isolated from each other so that the existing hydronic system remains undisturbed and functions exactly as it did before. Water that circulates through the outdoor boiler is never circulated through the home’s hydronic system or vice-versa.
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Page 19: Filling The Boiler With Water
See maintenance section for full details on wet rotor pump operation and care. (pump not included with NCB-80) During the first heating cycle the water might expand and overflow. This is normal and will occur anytime too much water has been added. Open the drain valve to keep the float indicator at the bottom of the rubber cap. -
Page 20: Heating Domestic Water, Pools And Spa's
III. Heating Domestic Water, Pools and Spa’s A. Sidearm or Plate Heat Exchanger For Domestic Hot Water For a sidearm heat exchanger, the hot line from boiler must first go to the top side port. This creates twice the domestic water flow through the sidearm as opposed to coming in at the bottom side port. For the fastest recovery, install a small circulation pump on the domestic side that is controlled by a strap-on thermostat or thermal snap disc placed on bottom line on the domestic side. -
Page 21: 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 22: Operation
IV. Operation A. Fuel Requirements Wood that is 20% moisture content or lower is required for the boiler to obtain the most efficient burn. Using unseasoned (“wet” or “green”) wood causes cooler burning temperatures and severely reduces efficiency. Only burn wood that has been cut, split and seasoned for 12-24 months, sheltered from rain and snow in Fall through Spring. -
Page 23: Loading Fuel
C. Loading Wood Caution! Doors, coals & ashes are hot! Wear safety glasses and use heavy gloves. Caution! Never open fuel door without first turning off the boiler at the rear switch or flame spillage may occur! Caution! Flammable gases fill the firebox when idling. Pause at blowback catch for 30 seconds and then stand to the side when fully opening until smoke dissipates enough to see inside. -
Page 24: Maintenance
V. Maintenance A. Cleaning Wear heavy gloves and clothing and safety glasses as metal, coals 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. Ash must be completely cleaned out bi-weekly. -
Page 25: Rope Seals
D. Rope Seals Caution! For inspection and adjustment, make sure to follow the same procedures for opening doors and covers as outlined for loading and cleaning. Inspection Check the rope seals on all doors and covers periodically during the heating season or when cleaning ash from the boiler as they will compress. -
Page 26: End Of Season Care
Inspection & Maintenance: Loosen the bleeder screw once a week (less often as experience shows otherwise) to flush the bearings to maximize pump life, especially for system filled with poor quality water (high iron, hardness, total dissolved solids, etc). It is highly recommended that a customer have their own test kit to monitor treatment levels once a month and add if needed. -
Page 27: Going Away
4. Doors & Covers: Oil all door hinges and latches. Wet rope seals with WD-40. Re-seal caulk on all jambs. Coat entire threaded portion of all bolts for doors and covers with a never-seize product. 5. Plumbing: Ensure fittings are tight at all locations. 6. -
Page 28: Trouble Shooting
Trouble Shooting Problem Cause Solution Boiler does not come up to Green or soft wood is being used, Use properly seasoned hard wood temperature. Wind blowing under boiler Take one or two inches of hard board insulation and place under boiler between legs then add non-combustible spacers between ground to hold up insulation The boiler is at temperature and is... -
Page 29: 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 30: 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 31 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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- Page 33 Nature’s Comfort LLC, 3790 N. SR 5, Shipshewana, IN 46565 - Phone: 877-251-7740 - Fax: 866-222-8702 www.naturescomfortllc.com _____________________________________________________________________________________ Initial/Annual Water Test Request/Report Form We recommend that you have your local dealer perform your initial and yearly nitrite testing. If no local dealer is available you may fill out this form and send to address above with a check or money order for $10 and a minimum 1oz water sample in a clean, clear, plastic water bottle.
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