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Oil
Model NX
Burner
WARNING Potential for Fire, Smoke and Asphyxiation Hazards
!
Incorrect installation, adjustment, or misuse of this burner could result in death, severe
personal injury, or substantial property damage.
To the Homeowner or Equipment Owner: To the Professional, Qualifi ed Installer or
Service Agency:
• Please read and carefully follow all instructions • Please read and carefully follow all instructions
provided in this manual regarding your responsi- provided in this manual
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Table of Contents General Information Hazard Defi nitions ........................................................................................................................................3 Owner’s Responsibility ................................................................................................................................3 Information To Be Used Only By Qualifi ed Service Technicians General Information .....................................................................
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General Information General Information Owner’s Responsibility WARNING ! To the Owner: Incorrect installation, adjustment, and use of this burner could result in Thank you for purchasing a Beckett NX burner severe personal injury, death, or sub- for use with your heating appliance. Please pay atten- tion to the Safety Warnings contained within this in- stantial property damage from fi re, struction manual. Keep this manual for your records carbon monoxide poisoning, soot or explosion. and
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General Information • Notice Special Requirements • General Specifi cations For recommended installation practice in Canada, refer to the latest version of CSA Standard B139 & Table 1 – Burner Specifi cations B140. Capacity Firing rate: - 0.40 – 1.75 GPH Input: Min. - 56,000 Btu Concealed damage — If you discover damage to Max - 245,000 Btu the burner or controls during unpacking, notify the Certifi cation/ UL certifi ed to comply with ANSI/UL296 & carrier at onc
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Inspect/Prepare Installation Site • Combustion Air Supply Information • Fuel Line Installation See NFPA Standard 31 for complete details. Do Not Use Tefl on Tape CAUTION !! Appliances located in confi ned spaces: All confi ned spaces should have two (2) permanent Damage to the pump could cause impaired burn- openings; one near the top of the enclosure and er operation, oil leakage and appliance soot-up. one near the bottom of the enclosure. Each open- • Never use Tefl on tape on fuel oil fi tti
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Inspect/Prepare Installation Site • Mount Burner on Appliance Prepare the Burner Verify that the air tube installed on the burner pro- vides the correct insertion depth. Refer to Figure • General 3. In most cases, the burner is ready to mount to the The end of the air tube should normally be 1/4” appliance. There can be situations where the burn- back from the inside wall of the combustion cham- er needs to be reconfi gured to perform properly in ber. Never allow the leading edge of t
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Start the Burner and Set Combustion The burner is supplied with either a one-stage • Wiring Connections Diagram pump or a two-stage pump based on the oil supply system requirements. Consult the instructions pro- Refer to the appliance manufacturer’s wiring dia- vided with the pump for installation specifi cations. gram prior to connecting the burner wiring. All wir- ing must be in accordance with the latest revision of When installing a one-pipe system, connect the National Electric Code
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Start the Burner and Set Combustion Figure 4b. – Typical Burner Sequence of Op- Start the Burner and Set Combustion eration Explosion and Fire Hazard WARNING 1. STANDBY. The burner is idle, waiting for a call for ! heat. When a call for heat is initiated, there is a 3- Failure to follow these instructions 10 second delay while the control performs a safe could lead to equipment malfunc- start check. tion and result in heavy smoke 2. VALVE-ON DELAY. The ignition and motor are emission, so
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Start Burner and Set Combustion Figure 5a. – Old Style Head/air Adjustment 7. Check/Adjust Zero Calibration for older style Head/Air Adjustment Mechanism. Refer to Plate Figure 5a. Scale Pointer a. Loosen the splined nut and lower acorn nut Upper Acorn Nut (Lock Zero approximately one turn. (DO NOT loosen the Calibration) upper acorn nut. This is used only for setting the zero adjustment.) (See Figure 5a.) Splined b. A 5/16” nut driver or fl at blade screwdriver Nut can be used to
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Trained Service Technician’s Regular Maintenance • Set Combustion with Test Instruments Trained Service Technician’s Regular Maintenance 1. Allow the burner to run for approximately 5 to 10 minutes. Professional Service WARNING ! Required 2. Set the stack or over-fi re draft to the level speci- Incorrect installation, adjustment, fi ed by the appliance manufacturer. • Natural Draft Applications; typically over-fi re and use of this burner could result draft is -0.01” or -0.02” w.c. in
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Trained Service Technician’s Regular Maintenance Make sure Low Firing Rate Baffle is in place if • Removing Nozzle Line for Service (Refer- required for the burner application. Omitting the ence the Replacement Parts Diagram.) baffle can result in unacceptable burner combus- tion. Correct Nozzle and Flow WARNING ! Inspect all gaskets. Replace any that are dam- Rate Required aged or would fail to seal adequately. Incorrect nozzles and fl ow rates Clean the blower wheel, air inlet, air guide
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Trained Service Technician’s Regular Maintenance 4. Use a 5/8” open-end wrench to carefully remove • Nozzle Installation the existing nozzle. Protect Nozzle from 5. Inspect the nozzle adapter before installing the CAUTION !! Damage new nozzle. If it is grooved or scratched on the sealing surface, replace the nozzle line assem- A damaged nozzle could cause impaired com- bly. If the surface is damaged, oil could leak at bustion, sooting, puffback of hot gases, smoke, the nozzle to adapter j
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Trained Service Technician’s Regular Maintenance Figure 7. – Nozzle Line/Head/Air Tube As- sembly (Low fi ring rate shown.) If the zero calibration has not been set, perform the following procedure: Retention Retention Head Head Electrode Electrode Clamp Clamp Head Head Support Support Legs Legs Electrode Electrode Bracket Bracket 1. Install the nozzle line, with the adjustment plate Electrode Electrode T Tiip ps s Electrode Electrode Insulator Insulator assembly attached, into the burner. E
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Figure 9. – Blower wheel assembly • Blower Wheel Replacement For installation or replacement of a blower wheel, insure that there is a space between the blower wheel and the motor face of 0.115”. Refer to Figure 9. SK9670 Page 14 RWB 6104 BNX R02
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Replacement Parts Diagram For best performance specify genuine Beckett replacement parts SK967101 Replacement Parts List Item Description Part No. Item Description Part No. 17 Igniter, electronic 51771U 1 Air guide 101101U 18 Gasket, Igniter Kit 51942U 2 Head/Air adjustment mechanism 51794U 18a Gasket, igniter baseplate assembly 18b Gasket, wiring hinge 3 Splined nut 3666 18c Gasket, igniter baseplate 4 Coupling 2454 hinge 5 CleanCut Fuel Pump, 2184404U 18d Gasket, rear access door (Incl
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Limited Warranty Information Limited WARRANTY For Residential, Commercial and Specialty Burners The R. W. BECKETT CORPORATION (“Beckett”) warrants to persons who purchase its Beckett burners from Beckett for resale or for incorporation into a product for resale (“Customers”) that its equipment is free from defects in material and workmanship under normal use and service for 60 months from the date of manufacture for Residential Burners and 18 months from the date of manufacture for Commercial
