Nature's Comfort NCB-120 Installation And Operation Instructions Manual Download Page 20 | Manualshive

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Nature's Comfort NCB-120 Installation And Operation Instructions Manual Download Page 20

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D. Connecting the Boiler to an Existing Indoor Boiler

A plate heat exchanger is needed to transfer heat from the outdoor boiler to another indoor boiler or hydronic system
so that the two systems remain isolated from each other.

As shown in the above figure, the two systems are totally isolated from each other so that the existing hydronic
system remains undisturbed and functions exactly as before. All pumps and controls remain essentially the same on
the existing system. A second T-stat is needed to run the zone pumps independently of the indoor boiler burner. If a
30-plate unit or larger is used, a larger circulation pump on your boiler may be necessary for proper water flow.

Water that circulates through the boiler is never circulated through the home’s hydronic system or vice-versa.

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Summary of Contents for NCB-120

Page 1: ...TIO S FOR 2006 2008 ATURE S COMFORT WOOD COAL HOT WATER OPE SYSTEM BOILERS O PRESURIZED CB 120 CB 175 CB 250 CB 325 Manufactured by ature s Comfort LLC Shipshewana I www naturescomfortllc com BUILT LIKE A TA K WITH LASER PRECISIO Revision 2012 2 5 ...

Page 2: ...mfort Again thank you for purchasing a Nature s Comfort Boiler We appreciate your business For the most up to date installation and operation information or if you need to see any page in color go to www naturescomfortllc com Please keep this manual with all other important papers The information in this manual is necessary for the installation operation and proper use of your boiler If you should...

Page 3: ...ofBoiler 11 B ConcreteBlockFooting 11 C PlumbingHookup 12 D ElectricalLines 12 E InstallationofPexPipe 12 F FillingBoilerwithWater 12 G PlumbingPartsNeeded 13 H AddingBypassValves 13 I InstallingHeatExchangerInPlenum 13 J InstallingHeatExchangerInSmallPlenum 15 K BleedingtheHeatExchanger 15 L AirFlowthroughPlenum 16 M ThermostatWireLayout 16 IV OtherHookUps HeatingDomesticWater PoolsandSpa s A Lay...

Page 4: ...k 4 000 sq ft 46 1 2 x 60 x 90 tall 1817 pounds NCB 250 263 000 BTU 250 gallon water tank 6 000 sq ft 46 1 2 x 78 x 90 tall 2260 pounds NCB 325 342 000 BTU 325 gallon water tank 8 000 sq ft 46 1 2 x 96 x 90 tall 2626 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 when properly seasoned hardwood ...

Page 5: ...er is designed to burn seasoned cordwood and coal only Do not burn garbage household or yard waste This is illegal in most areas Burning these materials can reduce the life of the boiler and will void your warranty 5 When opening the fire box door pause momentarily between the first latch and the safety latch to allow any combustion gases to burn off Always close the firebox door securely 6 Check ...

Page 6: ...m minimum or above 2500ppm max of nitrites for your warranty to remain valid The water jacket must remain full of properly treated water at all times after installation save for draining flushing and re treating Minimum recommended initial mix ratios for each boiler is NCB120 NCB175 1 5Qts NCB250 GT220 GT6000 2Qts NCB325 G GT500 3Qts NCB 575 6Qts Contact Nature s Comfort or your dealer to obtain w...

Page 7: ...l or call your dealer Please have your serial number ready This is found on a silver tag on the back of the rear access door or stamped into the fire door jamb on the top left If your dealer does not have the information you need request they contact Nature s Comfort and your dealer will be further educated to provide the best possible customer service Please keep in mind that Nature s Comfort bui...

Page 8: ...easily extended with 6 stovepipe 1 We recommend a distance of at least 100 feet be kept if prevailing winds blow towards any other residence not served by the boiler it is recommended that the stack be at least 2 feet higher than the peak roof line of that residence 2 If located more than 100 feet but no more than 150 feet to any residence it is recommended that the stack be at least 50 of the pea...

Page 9: ...eat exchanger installed inside your existing central duct system Typical of most systems A typical water to air heat exchanger much like a small radiator or heater core in a car is installed in your ductwork When air blows through it heat is extracted and hot air blows out of your vents The Nature s Comfort outdoor boiler can also be connected to any existing hydronic radiant heating system that o...

Page 10: ...t up as a single zone All boilers save for the NCB 120 come with ports for 2 hookups 2 nd Pump not included Single Zone setup 1 Red Pex pipe goes from the pump to heat exchanger s in home Please note The pump that came with your boiler may not be the correct size for your installation Please consult your dealer for sizing as water flow is essential to the proper efficient operation of your install...

Page 11: ...nce not served by the boiler Be considerate of neighboring residences properties parks etc 3 Review the recommended smoke stack heights on page 8 4 Do not locate the boiler near any combustible materials gasoline or other flammable liquids or gases 5 The boiler should be located away from dry grassy areas and any buildings to minimize danger of fires 6 Check with your insurance company and local c...

Page 12: ...ac circuit to operate the equipment in the boiler The size and type of electric wire to be installed depends on the distance from the boiler to the house If the boiler is less then 100 feet from the house 14 AWG UF cable is the smallest wire that may be used If the distance is greater than 100 feet 12 AWG UF cable must be used A maximum of 5 amps is used by the boiler if all standard equipment is ...

Page 13: ...time loss of heat to your home and over heating of your boiler Please note The pump that came with your boiler may not be the correct size for your installation Please consult your dealer for sizing as water flow is essential to the proper efficient operation of your installation Add a valve to the return line at the boiler so if repair or service is needed on lines or equipment the water in the b...

Page 14: ...on A WARNING Metal edges are very sharp Wear protective gloves and use caution Slide the heat exchanger into the hole for a test fit Ideally the tubes D and E should stick out of the plenum see diagram on previous page The header and tubes F can stick out of the plenum as well if necessary As long as the entire coil surface B is in the plenum operation should be fine even if the header F and G sti...

Page 15: ... the heat exchanger as shown below You may need to do this on both sides of your ductwork depending on your heat exchanger size Cut another line vertically between the other two cuts right in the middle as shown 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 ple...

Page 16: ...ow of your existing furnace system M Thermostat Wiring Layout The two diagrams below are options for controlling the furnace blower independently of the existing heat source Set the existing T stat 10 degrees below the new T stat Follow this diagram if you have a 4 wire thermostat system for the existing furnace controls Mount the new T stat next to the existing one and run the jumper wires behind...

Page 17: ...domestic water flow through the sidearm as opposed to coming in at the bottom For the fastest recovery install a small circulation pump on the domestic side that is controlled by a thermodisc switch Hookups to the domestic side must be connected to drain and pressure relief ports Make sure to keep the drain valve pressure relief valve in service purge all air from the piping and HX The plate HX dr...

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Page 19: ...the water to run from your boiler to the hot water heater and bypass the heat exchanger in the furnace plenum Use of union fittings between the isolation valves and heat exchanger for easy removal is recommended as the plenum heat exchanger must be drained or removed so the water doesn t freeze when running air conditioning C Heating a Pool or Spa Please contact your local pool spa contractor if t...

Page 20: ...olated from each other so that the existing hydronic system remains undisturbed and functions exactly as before All pumps and controls remain essentially the same on the existing system A second T stat is needed to run the zone pumps independently of the indoor boiler burner If a 30 plate unit or larger is used a larger circulation pump on your boiler may be necessary for proper water flow Water t...

Page 21: ...ate properly with the jamb do not stretch the rope Bounce the door closed a couple times to custom fit the seal to the jamb then leave door open until the caulk behind the rope is fully cured ensure there are no raised portions that will leave gaps Re adjust door to properly seal Contact your dealer or Nature s Comfort for new rope or caulk if needed This is a normal maintenance item and not a war...

Page 22: ...across the USA some customers get much longer life out of a pump than others Filling a boiler with softened water adding and maintaining treatment so there s 1 000 1 500ppm of nitrites is the best thing you can do for pump and boiler life While there is a one year warranty on our pumps from customer s date of purchase they must first be inspected and an attempt made to clean and put back in servic...

Page 23: ...e treatment Reduce number of 90 s T s used Add insulation to structure Boiler over heats Air leak Damper open to far Water is low in boiler Aqua stat malfunction Make sure loading door is sealed adjust if necessary make sure ash pan is shut Adjust damper to open widest point Add water to keep full Replace Aqua stat Boiler fire does not stay lit Not leaving some coals in burn area Ash in ash pan no...

Page 24: ...no one will be keeping the boiler going turn your backup heat system on the boiler blower off and keep the circulation pump running Your boiler will now operate in reverse being kept above freezing by your backup system eliminating the need to otherwise drain the boiler Please keep this manual with all other important papers The information in this manual is necessary for the installation operatio...

Page 25: ...________________ Dealer Purchased From _________________________________ Date of Installation _________________________________ Installed By _________________________________________________________ Installer s Address ____________________________________________________________ Street ____________________________________________________________ City State Zip Installer s Phone Number ___________ ...

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