Nature's Comfort NCB-175 Installation And Operating Instructions Manual Download Page 25 | Manualshive

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Installation and Operating Instructions

NCB

Built Like A Tank With Laser Precision

Page

25

of 29

C. Connecting an Outdoor Boiler to an Existing Gas Boiler.

Again, we need to use a heat exchanger to transfer heat from the outdoor boiler to another
indoor boiler or hydronic system so that the two systems remain isolated from each other.

The 2 systems are totally isolated from each other so that the existing hydronic system
remains undisturbed and functions exactly as it did before.

All pumps and controls remain essentially the same.

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

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Summary of Contents for NCB-175

Page 1: ...ING INSTRUCTIONS FOR NATURE S COMFORT WOOD HOT WATER OPEN BOILERS FURNACE NCB 175 NCB 250 NCB 325 Manufactured by Nature s Comfort LLC Lancaster Wisconsin http www naturescomfortllc com BUILT LIKE A TANK WITH LASER PRECISION ...

Page 2: ...e you with this users and maintenance manual to allow you to use your equipment under the best possible conditions and in the most optimal manner and furthermore to increase its operating life We strongly advise you to read it carefully and keep it handy THIS MANUAL INCLUDES IMPORTANT SAFETY INFORMATION Your new furnace should have the following 1 Owner s manual complete with Safety Hook Up and Op...

Page 3: ...ConcreteBlockFooting 13 L BleedingtheHeatExchanger 19 C PlumbingandElectricalHook 13 M AirFlowthroughPlenum 19 D WaterLinesandTheirFunctions 14 N Power WaterPumpStartsw Fan 20 E ElectricLines 14 O Power WaterPumpRunsContinuous 21 F InstallationofPexPipe 15 P RunningWiretotheHouse 21 G FillingBoilerwithWater 15 Q ThermostatWireLayout 22 H PlumbingPartsNeeded 15 R WaterLineLayoutinHouse 23 I AddingS...

Page 4: ...rer for their recommendations Use metal asbestos stove pipe for the flue which is insulated to prevent fires D Boiler Dimensions NCB 175 184 000 BTU and a 175 gallon water tank 4000 sq ft 46 1 2 x 60 x 90 tall 1717 pounds NCB 250 263 000 BTU and a 250 gallon water tank 5 500 sq ft 46 1 2 x 78 x 90 tall 2260 pounds NCB 325 342 000 BTU and a 325 gallon water tank 8 000 sq ft 46 1 2 x 96 x 90 tall 26...

Page 5: ...rely 7 Check to be sure the ash pan is fully inserted Leaving a small crack or opening can cause over firing in the fire box 8 Always use proper care when installing operating and maintaining the boiler 9 Always wear protective gloves and glasses and be aware that hanging and loose clothing can catch fire 10 Do not modify the boiler 11 Do not substitute repairs that can be provided by your dealer ...

Page 6: ...on or faulty connections c Damage to the thermostat through overheating due to intensive use i The ash pan is left out or open ii When the ventilation convection fan is left off with high fires 2 Failure to clean out ashes a Moisture combined with ashes will eat through a boiler in short order and is NOT covered under warranty 3 Incorrect use 4 An insufficient or excessive draft 5 Non compatible f...

Page 7: ...de Number NCB Serial Number ___________________________ Date of Purchase ___________________________ Date of Installation ___________________________ Mail to Nature s Comfort LLC 4689 Airport Rd Lancaster WI 53813 A duplicate for mailing is at the end of this manual Retain this copy for your records Please keep this manual with all other important papers The information in this manual is necessary...

Page 8: ...ind direction Chimney height can be easily extended with 6 Stovepipe 1 We recommend a distance of at least 100 feet 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 eave 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...

Page 9: ...a lot of moisture can cause more smoke than the chimney can dispose of Lower moisture content very dry old wood burns rapidly and inefficiently F Burning Coal For best results coal should be mix with wood to help the air pass through G Heating The House The NCB is designed to save energy and provide the most comfortable heating available It heats your home by heating a firebox surrounded by a stee...

Page 10: ... furnace will automatically take over to maintain your household temperature The wall thermostat that regulates the heat from the outside boiler performs two functions when it senses need for heat according to your temperature setting First it starts the circulating water pump on the outdoor boiler to circulate hot water through the heat exchanger Second it starts the blower inside your existing f...

Page 11: ...er flow in at top and out at bottom See arrows 1 and 2 K Insulated Pex Pipe If you have a situation where burying below the frost line gets into rock or water you can use insulated Pex Pipe and bury it closer to the surface You may also want to weigh the energy savings Even though the ground is warm there is heat loss with non insulated pipe This results in more wood being burnt If your wood is fr...

Page 12: ... line 1 It is recommended that the boiler be located with due consideration to any neighboring residences and to the prevailing wind direction 2 Do not locate an outdoor wood burning boiler within 100 ft of a residence 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 com...

Page 13: ...ely sure about the correct depth before the Insulated Pex Pipe are installed underground Call your local building inspector s office for that information 4 A trench must be dug wide enough to accommodate a 4 Insulated Pex pipe All plumbing and electrical lines should be run inside the watertight pipe 5 The twine in the pipe in for adding your Electrical wire 6 If more than one location is to be he...

Page 14: ...water pump run continually when the distance from the boiler to the house is greater than 50 feet and or boiler is used to heat your hot water 1 If your boiler is less then 100 feet from your house you may use 14 wire If it is greater than 100 feet you should use 12 wire You may certainly use 12 for the shorter distance if you like 2 You may use 14 2 w ground UF Romex under ground wire if you choo...

Page 15: ...he bottom of the pump 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 This will also be your supply line for your hydronic system In either case a brazed plate heat exchanger is often used between the two systems See end of this section for ...

Page 16: ...n the heat exchanger before using the air conditioner The heat exchanger must be installed so that it is airtight No air must be able to flow around it or out of the ductwork Use adhesive backed foam tape used for insulating doors and windows around the water coil Use foil tape to seal off the heat exchanger and the hole you make Make sure the fittings for the supply and return lines are easy to g...

Page 17: ... You can purchase different thicknesses of tape so that it will fit and seal properly Place foam tape around the outside of the heat exchanger to seal it off so that it fits tight and air can t blow by it The heat exchanger needs to be installed so it won t move around The easiest way is to fabricate some pieces of metal into an L shape approx the length of the heat exchanger like shown above Inst...

Page 18: ...ger as shown below 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 that it protrudes front and back 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 above Using channel lock pliers to c...

Page 19: ... three speeds to provide various rates of air movement Please consult a local furnace specialist if you want in change the air flow of your existing furnace N Connecting Power Water Pump Powered from Furnace Fan A qualified electrician must wire this boiler in accordance with the National Electrical Code 1 You must run 12 3 w Ground UF wire to your boiler if you want your boiler pump to run only w...

Page 20: ...Installation and Operating Instructions NCB Built Like A Tank With Laser Precision Page 20 of 29 Figure 3 Water Pump on Boiler Comes on with Furnace Fan ...

Page 21: ... inside house Black goes to 110V 15 Amp circuit breaker in house White is common to circuit breaker box common connections When 12 3 is used Red connects to the power wire going to the furnace fan Ground wire is grounded in circuit breaker box Owner may want to add a switch in the metal junction box so you can turn power off if needed to work on pump light aqua switch solenoid and blower Don t for...

Page 22: ...Installation and Operating Instructions NCB Built Like A Tank With Laser Precision Page 22 of 29 Q Thermostat Wiring Layout ...

Page 23: ...hot water 2 Heat exchanger in hot air Furnace S Summer Hot Water Bypass This bypass permits you to use your boiler during the spring summer and fall to heat your hot water when you may not need or want to heat your house The bypass simply permits the water to run from your boiler to the hot water heater and bypass the heat exchanger in the furnace plenum ...

Page 24: ...g valve to control water temperature B Hooking up a Pool or Spa Please contract your local pool spa contractor if this boiler is to be used to heat a pool or spa You must work with a pool spa specialist since the chemicals used in a pool spa are destructive to your boiler A stainless steel water to water heat exchanger must be used to transfer heat from the outdoor wood boiler to the pool or spa ...

Page 25: ...utdoor boiler to another indoor boiler or hydronic system so that the two systems remain isolated from each other The 2 systems are totally isolated from each other so that the existing hydronic system remains undisturbed and functions exactly as it did before All pumps and controls remain essentially the same Water that circulates through the boiler is never circulated through the home s hydronic...

Page 26: ...e removed to reduce the risk of a chimney fire 3 All creosote and ash must be cleaned from firebox twice a year preferably halfway through the heating season and immediately after the heating season C Door Seals Check the sealing of the rope seal periodically during the heating season Check with local hardware if a new rope is needed D End of Season 1 Power Turn off power supply at the appropriate...

Page 27: ... together c Turn the power on d If the blower does not run the aqua stat has failed and needs to be replaced The aqua stat is a standard hot water heater aqua stat thermostats available for about 8 10 at any good hardware plumbing or home building supply store e Turn the power off f Install the new aqua stat and reconnect the two wires 6 Check that the water pump is running a First check if electr...

Page 28: ...ort boiler is not intended to be the only source of heat Therefore a backup system should always be in place and be ready for use The Nature s Comfort boiler is not intended to operate under pressure All electrical and plumbing should be done by qualified personnel and conform to national state and local building electrical plumbing fire and building codes Manufacturer is not liable for damages to...

Page 29: ...of Installation ___________________________ Installed by Name ____________________________________________________ Installer s Address ____________________________________________________________ Street ____________________________________________________________ City State Zip Installer s Phone Number ___________ ________________ Area code Number Mail to Nature s Comfort LLC 4689 Airport Rd Lanca...

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