York P4LBX20F19001, P3DHX12F08001, P2DHX16F12001 Maintenance and Service, Operating Instructions

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IMPORTANT: Be sure that the home owner knows where the burner reset switch is located, and is aware that the reset switch is not to be activated more than once without a thorough look for the cause of the problem, (lack of fuel, etc.). Be sure that the homeowner knows when to quit trying to start the furnace during these conditions and who to call for emergency service.

MAINTENANCE AND SERVICE

A:Routine Maintenance By Home Owner

Other than remembering to arrange for the annual professional servicing of the furnace by the service or installation con- tractor, the most important routine ser- vice performed by the homeowner is to maintain the air filter or filters. A dirty filter can cause the furnace to over-heat, fail to maintain indoor temperature during cold weather, increase fuel consumption and cause component failure.

The furnace filter(s) should be inspected, cleaned or replaced monthly. The fur- nace is factory equipped with a semi- permanent type filter. If the filter is dam- aged, replace with filters of the same size and type.

During the routine service, inspect the general condition of the furnace watching for signs of oil leaks in the vicinity of the oil burner, soot forming on any external part of the furnace, soot forming around the joints in the vent pipe, etc. If any of these conditions are present, please advice your service or installation con- tractor.

B: Annual Service By Contractor

THE Combustion chamber (firepot) IS FRAGILE. use care when inspecting and cleaning this area.

The heat exchanger should be inspected periodically and cleaned if necessary. if cleaning is necessary, SHUT OFF POWER TO THE FURNACE and re- move the burner. Using a stiff brush with a wire handle, brush off scale and soot from inside the drum and flue pipe. To clean the heat exchanger radiator, re- move the covers on the front or inner front panel, and then loosen the brass nuts on the radiator clean-out yoke as- sembly. Do not remove the brass nuts. The yoke assembly, once loosened, may be removed to gain access to the heat exchanger outer radiator.

A wire brush can be used to loosen dirt and debris on the inside surfaces of the radiator. Clean out all accumulated dirt, soot and debris with a wire handled brush and an industrial vacuum cleaner. Replace the clean-out yoke assemblies and clean-out covers.

Most circulating fan motors are perma- nently lubricated by the motor manufac- turer. These motors will have no oil ports. If the blower motor does contain oil ports, under normal operating condi- tions it will not require oiling for the first two years. Oil sparingly; a few drops in each oil port with SAE 20 non-detergent oil. Oiling is most easily done with a "tele-spout" oiler. This oiler has a long flexible plastic spout. DO NOT OVER- LUBRICATE. Excess oil may result in premature electric motor failure.

Inspect the blower fan. Clean it if neces- sary.

Oil Burner Maintenance: Follow the in- structions of the oil burner manufacturer. (See oil burner manufacturer's instruc- tions supplied with furnace). The oil burner nozzle should be replaced annu- ally. We recommend that the oil filter be changed on an annual basis.

The venting system should be cleaned and inspected for signs of deterioration. Replace pitted or perforated vent pipe and fittings. The barometric draft regula- tor should open and close freely.

All electrical connections should be checked to ensure tight connections. Safety controls such as the high limit controls should be tested for functional- ity. The fan control functions should be checked to ensure that all fan speeds are operating properly.

OPERATING INSTRUCTIONS

Before Lighting

Open all supply and return air registers and grilles.

Open all valves in oil pipes.

Turn on electric power supply.

To Light Unit

Set the thermostat above room tempera- ture to call for heat. The burner will start. NOTE: If the furnace has been off for an extended period of time, it may be nec- essary to press the RESET button on the primary combustion control relay, (once only). If pressing the reset button does not start the furnace, refer to Appendix C, Troubleshooting.

After the furnace warms sufficiently, the circulation fan will start.

The furnace will continue to run until the thermostat call for heat is satisfied.

Set the thermostat below room tempera- ture. The oil burner will stop.

The air circulation blower will continue to run until the furnace has cooled suffi- ciently.

To Shut Down Unit

Set the thermostat to the lowest possible setting. Set the manual switch (if in- stalled) in the Electrical Power Supply Line to "OFF".

NOTE: If the furnace is to be shut down for an extended period of time, close the oil supply valve to the oil burner.

DO NOT ATTEMPT TO START THE BURNER WHEN EXCESS OIL HAS ACCUMULATED, WHEN THE FUR- NACE IS FULL OF VAPOUR, OR WHEN THE COMBUSTION CHAMBER IS VERY HOT. NEVER BURN GAR- BAGE OR PAPER IN THE FURNACE, AND NEVER LEAVE PAPER OR RAGS AROUND THE UNIT.

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Contents Installation Manual ContentsHeat Loss IntroductionLocation of Unit DOWN-FLOW Installation Horizontal Installation NON-SUSPENDED InstallationCombustion AIR Suspended InstallationAIR Conditioning Chimney VentingCommon Chimney Problems Draft Regulator ControlOIL Tank Piping InstallationMinimum Chimney Base Temperatures F Electrical ConnectionsCirculating AIR Blower Neutral Wire normally the white wire is Never Moved to ADJust the Blower Speed Burner Electrodes ProcedureOIL Burner OIL Burner SET-UPStack Temperature Furnace Installation SET-UPSmoke Test Note Maintenance and Service Operating InstructionsDelavan Table A-1 Beckett OIL Burner SET-UPBTU/Hr Pressure Rate PlateTable A-3 Belt Drive Blower SET-UP Table A-2 Direct Drive Blower SET-UPOutput Motor Blower SET-UP Cooling Capacity Furnace Furnace Motor Temp CFM Blower Rise Speed Table A-4 Direct Drive Blower CharacteristicsTable A-5 Belt Drive Blower Characteristics Model FLAGeneral Dimensions P2LBX16F14501 General Dimensions P4LBX20F19001 General Dimensions P3DHX12F08001 General Dimensions P2DHX16F12001 Page Page R7184 Detailed Sequence of Operation Thermostat calls for heatOperation R8184N Notes R7184 LED Diagnostic LightPreliminary Steps Table C-2 R7184 Troubleshooting But Control locks out and starts Before Oil Table C-3 System and General Troubleshooting Problem Possible Cause RemedyLow oil pump pressure Check stack temperature. Stack temperatures will normally P4LBX20F19001 Assembly Notes P3DHX Series Downflow Configuration NotesP3DHX12F08001 Vestibule KIT Repair Part List P3DHX12F08001A Repair Part List P2DHX16F12001A Repair Part List P2LBX16F14501A Repair Part List P4LB Series Replacement Part Contact Information Page Unitary 5005 Norman Products York Group Drive 73069

P4LBX20F19001, P2DHX16F12001, P3DHX12F08001, P2LBX16F14501 specifications

The York P2LBX16F14501, P3DHX12F08001, P2DHX16F12001, and P4LBX20F19001 are high-performance HVAC units designed to meet diverse heating and cooling needs in both residential and commercial environments. These models are notable for their energy efficiency, advanced technologies, and user-friendly features.

The York P2LBX16F14501 is particularly known for its advanced inverter-driven scroll compressors that offer precise temperature control, enhanced efficiency, and significant noise reduction. This model is equipped with a multi-speed blower that helps maintain consistent airflow while ensuring optimum comfort levels. Its compact design allows for flexible installation options, making it suitable for various applications.

In contrast, the York P3DHX12F08001 focuses on delivering robust heating solutions, incorporating a variable-speed fan motor designed for improved energy savings and optimal performance. This unit excels in environments with fluctuating temperature demands, providing reliable heating without sacrificing energy efficiency. With built-in diagnostics, maintenance becomes more manageable, allowing for timely interventions to prevent excessive downtime.

The York P2DHX16F12001 stands out with its dual-fuel capability, allowing users to seamlessly switch between gas and electric sources depending on the prevailing energy costs. This versatility not only ensures year-round comfort but also offers substantial savings on energy bills. The model's high SEER (Seasonal Energy Efficiency Ratio) rating is indicative of its capability to deliver cooling efficiently during peak summer months.

Lastly, the York P4LBX20F19001 is designed for larger spaces, featuring a higher capacity that makes it ideal for commercial applications. This unit leverages advanced refrigerant technologies, enabling it to operate effectively across a wider range of temperatures. Its intelligent control systems can be integrated with building management systems, providing real-time monitoring and remote access to ensure peak operational efficiency.

All four models share a commitment to sustainable design and longevity, integrating modern materials that enhance durability and reduce the environmental footprint. Each unit is engineered with user comfort and energy efficiency in mind, representing York's dedication to innovation and quality in the HVAC industry.