Refer to the QuickLIT website for the most up-to-date version of this document.1P266 Series Single-Phase Condenser Fan Speed Controls Product BulletinThe P266 Series Single-Phase Condenser Fan Speed Controls are cost-effective, weather-resistant, durable motor speed controls. The P266 Series Controls are designed for approved single-phase, Permanent Split-Capacitor (PSC) motors commonly used in a wide variety of refrigeration and air conditioning condenser fan applications.The P266 Series Controls are designed to replace the JohnsonControls® P66 Series and P215 Series Fan Speed Controls, providing additional features and flexibility, greater energy efficiency, and longer motor life in a compact, rugged, weather-resistant package.P266 Series Controls are available for 208 through 575VAC 50/60 Hz range applications. P266 Series Controls have current ratings from 4 to 12 A, depending on the voltage and model.Some P266 Series Controls provide optional control of up to three auxiliary (fixed-speed) fans or fan stages. In addition, some models provide two additional high-voltage triacs that allow you to split the source power to the main and auxiliary windings, and connect a low-speed capacitor to increase efficiency at low-speed operation. Figure 1: P266 Series Single-Phase Condenser Fan Speed ControlTable 1: Features and BenefitsFeaturesBenefitsOne or Two Durable, Accurate, Stainless Steel, Remote-Mount Pressure TransducersResist damage from physical shock, vibration, pressure pulsation, and extreme environmental conditions; eliminate capillary tube breaks and greatly reduce refrigerant loss potential; provide 1% total error band; and are applicable to single and multi-circuit condenser applications.Available in 208/240 VAC (8 or 12A), 380/460VAC (4 A), or 460/575 VAC (4 A)Provides efficient PSC motor speed control for a wide range of condenser fan applications.Wide, Adjustable Pressure Throttling RangeEnables application flexibility and allows you to tune condenser operation to specific pressure ranges and ambient environments.Optional Auxiliary Fan ControlProvides control of up to three fixed-speed fans or fan stages in conjunction with the speed controlled fan or fan stage.Optional Low-Speed Capacitor ModeEnables cooler, quieter, and more efficient fan motor operation at low speeds.NEMA3R, (IP54) Enclosure with Integral Metal Heat-Sink and Stand-Off Mounting FeetProvides a rugged, weather-resistant fan control with good heat dissipation and a sturdy mounting base.P266 Series Single-Phase Condenser Fan Speed ControlsProduct BulletinP266xxA-xxCode No. LIT-12011534Issued May 2018P266 Series Single-Phase Condenser Fan Speed Controls Product Bulletin2Application The P266 Series Single-Phase Condenser Fan Speed Control, in conjunction with a P266 Series Electronic Pressure Transducer, is a pressure-actuated, digital electronic motor speed control designed for approved single-phase PSC motors used in a wide variety of HVACR applications.The P266 Series Control regulates supply voltage to the fan motor in response to the condenser refrigerant pressure, and maintains the appropriate fan speed (airmovement) through the condenser regardless of the ambient temperature or air delivery variations.The P266 Series Control can be used to modulate multiple identical motors in an application. Refer totheP266 Series Single-Phase Condenser FanSpeedControls Installation Instructions (PartNo.24-7664-2705) for more details.The P266 Series Control is housed in a NEMA 3R (IP54) rainproof enclosure for outside applications.The P266 Series Control is an energy efficient and effective alternative to on/off fan-cycling controls, multiple-speed motors, temperature fan speed controls, modulating air damper systems, condenser flood-back systems, and other condenser pressure control methods.P266 Series Single-Phase Fan Speed Control applications include:•computer room air conditioning•commercial refrigeration•commercial air conditioningP266 Series Control OperationThe P266 Series Control regulates fan motor speed by limiting the supply voltage to the motor based on the sensed condenser pressure. In a typical P266 Series Control application, as the condenser pressure rises, the P266 Series Control increases the supply voltage to the fan motor, which increases fan speed and air movement across the condenser coil. The increased air movement removes condenser heat faster, which maintains the condenser pressure within the defined range.P266 Series Control Setup Values and ModesThe P266 Series Control ships with up to ten factory default setup values and modes. These settings can be adjusted in the field (if required) to meet your specific condenser application requirements.The adjustable settings of the P266 Series Control include:•Start Voltage establishes the initial minimum voltage delivered by the P266 SeriesControl to the fan motor, to idle the fan motor at the minimum speed.•Start Pressure establishes the pressure setpoint (bar or psig) at which the P266 Series Control outputs the start voltage and runs the fan motor at minimum speed.•End Voltage establishes the voltage output that is maintained by the P266 Series Control when the sensed pressure is equal to or greater than the end pressure. The end voltage to the motor can be set to either 95% or 97% of the total input voltage to the P266 Series Control.•End Pressure establishes the pressure setpoint (bar or psig) at which the P266 Series Control outputs the end voltage and runs the fan motor at the maximum speed.Figure2 illustrates the relationship between start voltage, start pressure, end voltage, and end pressure. Low Pressure Mode (LPM) determines whether the fan motor is powered on (at the start voltage and typically idling at minimum speed) or is off when the condenser pressure is below the start pressure. See Figure2.IMPORTANT:Use this P266 Series Single-Phase Condenser Fan Speed Control only as an operating control. Where failure or malfunction of the fan speed control could lead to personal injury or property damage to the controlled equipment or other property, additional precautions must be designed into the control system. Incorporate and maintain other devices, such as supervisory or alarm systems or safety or limit controls, intended to warn of or protect against failure or malfunction of the fan speed control.!CAUTION: Risk of Property DamageUse only single-phase PSC motors approved by the manufacturer for speed control applications with the P266 Series Control. Failure to use a single-phase PSC motor may damage the motor and other property. P266 Series Single-Phase Condenser Fan Speed Controls Product Bulletin3Split Winding Mode enables the M2 Triac on the P266SeriesControl, which allows you to split the main windings of the motor from the auxiliary windings (and the M1 Triac), and power the main windings with the M2 Triac. Split winding operation increases fan motor efficiency.Note:Split winding mode is available for only 240VAC single-phase PSC motors that have split winding wire leads. Refer to the motor manufacturer’s installation instructions to determine if your fan motor may be wired to enable the split winding mode. Copeland Digital Scroll™ Compressor Mode allows you to use the P266 Series Control on a system that uses a digital scroll compressor. Failure to enable the digital scroll compressor mode when using a digital scroll compressor may cause your condenser fan to oscillate.Low-Speed Capacitor Mode allows you (on some P266 Series models) to connect a low-speed capacitor to the M3 triac on the control and the auxiliary windings on the fan motor, and power the M3 triac, which provides additional power to the motor at low speed. In many fan motor speed applications, the addition of the low-speed capacitor circuit can provide more efficient, quiet and cooler motor operation at low speeds.Changeover Voltage determines the voltage at which the P266 Series control connects and disconnects power to the M3 triac, low-speed capacitor, and auxiliary motor windings (Figure3).Auxiliary Fan Stage Mode allows you to set up the P266 Series Control to cycle (on/off) up to three additional (fixed-speed) fan motors or fan stages in conjunction with the variable speed fan controlled by the P266 Series Control. Three low-voltage circuits can be wired to control the auxiliary fan motor/stage starters.Figure4 shows a P266 Series Control application with one auxiliary fan operating in conjunction with the speed-controlled fan. When the condenser load exceeds the output capacity of the speed-controlled fan, the P266 Series Control powers on the auxiliary fan and shifts the speed-controlled (P266) fan to a new start pressure. Figure 2: Relationship between Some P266 Series Fan Speed Control Values and ModesStartPressureEndPressure0StartVoltageEndVoltageModeLow Pressure ModeOffVoltage to MotorLowPressureModeOnPressure at SensorVoltage to MotorFIG:p266_Valu_RelsFigure 3: Low-Speed Capacitor OperationStartPressureEndPressure0StartVoltageEndVoltageLPMOffVoltage to MotorLPM OnPressure at SensorLow-Speed CapacitorEnabled Low-Speed CapacitorDisabledVoltage to MotorChangeover VoltageCVFIG:p266_CV_RelsFigure 4: Graph Showing a Speed-Controlled (P266) Fan Operating with One Auxiliary (On/Off) Fan Stage over the Entire Pressure RangeStartPressureEndPressure0Pressure at SensorTotal1stStageP266 Fan OutputAuxiliaryFanOutput % FanOverlapAux.FanPlusP266 FanOutputP266 FanStageShiftP266 Fan OutputOutput CapacityOnOffFan Throttling RangeFig:AuxFanOvrlapP266 Series Single-Phase Condenser Fan Speed Controls Product Bulletin4Auxiliary Fan Overlap determines the pressure range overlap (as a percentage of the total pressure range) between the fan stages set up on the P266 Series Control. The fan overlap value is equal for all auxiliary fan stages set up on the control.Increasing the auxiliary fan overlap value decreases the (on/off) cycling rate of the auxiliary fans, and increases the pressure differential between auxiliary fan stages (which increases the pressure range of each auxiliary fan stage).Test Voltage ModeTest voltage mode is a special setup, testing, and tuning feature that allows you to wire a P266 Series Control and fan motor in the field, and test operate the fan motor at different start voltage values without connecting a pressure transducer. You can also set up and test low-speed capacitor operation in the test voltage mode. When your fan motor is operating as desired, you can save the test settings, connect the transducer, and operate your application at the saved settings.Ordering InformationThe four basic types of P266 Series Controls are based on the supply voltage rating and whether the control has an onboard, low-voltage power supply transformer.P266A type controls are 208 to 240 VAC range controls without onboard, low-voltage transformers.P266B type controls are 460 to 575 VAC range controls without onboard, low-voltage transformers.P266C type controls are 380 to 460 VAC controls without onboard, low-voltage transformers.P266E type controls are 208 to 240 VAC range controls with an onboard, low-voltage transformers. Table2 provides product code numbers, descriptions, and details for the currently available P266 Series Single-Phase Condenser Fan Speed Control models. Table3 provides product code numbers and descriptions for the currently available P266 Series Electronic Pressure Transducers.Repair InformationIf a P266 Series Single-Phase Condenser Fan Speed Control fails to operate within its specifications, replace the unit. For a replacement P266 Series Control, contact the nearest Johnson Controls representative. Table 2: P266 Series Fan Speed Control Model and Kit Product Code Numbers, Descriptions, and Details (Part 1 of 3)Product Code NumberDescriptionTransducerModel Includedin KitVoltage (in VAC)Maximum OutputAmperesHigh VAC TriacsAvailable Auxiliary Fan Control Circuits1P266AAA-100C2P266 Fan Speed Control (Only)N/A208/240830P266ABA-100C2P266 Fan Speed Control (Only)N/A208/240833P266ACA-100C2P266 Fan Speed Control (Only)N/A208/240810P266ADA-100C2P266 Fan Speed Control (Only)N/A208/240813P266BGA-100C2P266 Fan Speed Control (Only)N/A460/575420P266BHA-100C2P266 Fan Speed Control (Only)N/A460/575423P266BCA-100C2P266 Fan Speed Control (Only)N/A460/575410P266BDA-100C2P266 Fan Speed Control (Only)N/A460/575413P266CHA-100C2P266 Fan Speed Control (Only)N/A380/460423P266ABA-1K2P266 Fan Speed Control with One P266 Pressure Transducer and One 2 m (6.6 ft) CableP266SNR-1C0 to 35 bar (0 to 508 psig)208/240833P266ABA-3K2P266 Fan Speed Control with One P266 Pressure Transducer and One 2 m (6.6 ft) Cable P266SNR-2C0 to 52 bar (0 to 754 psig)208/240833P266 Series Single-Phase Condenser Fan Speed Controls Product Bulletin5P266ABA-2K2P266 Fan Speed Control with Two P266 Pressure Transducers and Two 2 m (6.6 ft) CablesP266SNR-1C0 to 35 bar (0 to 508 psig)208/240833P266ABA-4K2P266 Fan Speed Control with Two P266 Pressure Transducers and Two 2 m (6.6 ft) CablesP266SNR-2C0 to 52 bar (0 to 754 psig)208/240833P266BHA-1K2P266 Fan Speed Control with One P266 Pressure Transducer and One 2 m (6.6 ft) CableP266SNR-1C0 to 35 bar (0 to 508 psig)460/575423P266BHA-3K2P266 Fan Speed Control with One P266 Pressure Transducer and One 2 m (6.6 ft) Cable P266SNR-2C0 to 52 bar (0 to 754 psig)460/575423P266BHA-2K2P266 Fan Speed Control with Two P266 Pressure Transducers and Two 2 m (6.6 ft) CablesP266SNR-1C0 to 35 bar (0 to 508 psig)460/575423P266BHA-4K2P266 Fan Speed Control with Two P266 Pressure Transducers and Two 2 m (6.6 ft) CablesP266SNR-2C0 to 52 bar (0 to 754 psig)460/575423P266EAA-1K2P266 Fan Speed Control with Internal Transformer andOne P266 Pressure Transducer and One 2 m (6.6 ft) CableP266SNR-1C0 to 35 bar (0 to 508 psig)208/240830P266EAA-3K2P266 Fan Speed Control with Internal Transformer andOne P266 Pressure Transducer and One 2 m (6.6 ft) CableP266SNR-2C0 to 52 bar (0 to 754 psig)208/240830P266EBA-1K2P266 Fan Speed Control with Internal Transformer andOne P266 Pressure Transducer and One 2 m (6.6 ft) CableP266SNR-1C0 to 35 bar (0 to 508 psig)208/240833P266EBA-3K2P266 Fan Speed Control with Internal Transformer andOne P266 Pressure Transducer and One 2 m (6.6 ft) CableP266SNR-2C0 to 52 bar (0 to 754 psig)208/240833P266ECA-1K2P266 Fan Speed Control with Internal Transformer andOne P266 Pressure Transducer and One 2 m (6.6 ft) CableP266SNR-1C0 to 35 bar (0 to 508 psig)208/240810P266ECA-3KP266 Fan Speed Control with Internal Transformer andOne P266 Pressure Transducer and One 2 m (6.6 ft) CableP266SNR-2C0 to 52 bar (0 to 754 psig)208/240810Table 2: P266 Series Fan Speed Control Model and Kit Product Code Numbers, Descriptions, and Details (Part 2 of 3)Product Code NumberDescriptionTransducerModel Includedin KitVoltage (in VAC)Maximum OutputAmperesHigh VAC TriacsAvailable Auxiliary Fan Control Circuits1P266 Series Single-Phase Condenser Fan Speed Controls Product Bulletin6P266 Series Electronic Pressure TransducersP266 Series Controls are designed to reference either one or two JohnsonControls P266 Series Electronic Pressure Transducers to monitor condenser pressure.P266 Series Transducers are specialized versions of the P499SeriesElectronic Pressure Transducers, designed for use with P266 Series Fan Speed Controls. See Table3 for the available P266Series transducer models.Refer to the P499 Series Electronic Pressure Transducers Product/Technical Bulletin (LIT-12011190) for detailed information on installing P266 Series Transducers.Note:On P266 Series Control applications that use two P266 SeriesTransducers, the P266 SeriesControl always references the transducer that is sensing the higher pressure. P266EDA-1K2P266 Fan Speed Control with Internal Transformer andOne P266 Pressure Transducer and One 2 m (6.6 ft) CableP266SNR-1C0 to 35 bar (0 to 508 psig)208/240813P266EDA-3K2P266 Fan Speed Control with Internal Transformer andOne P266 Pressure Transducer and One 2 m (6.6 ft) CableP266SNR-2C0 to 52 bar (0 to 754 psig)208/240813P266EEA-1K2P266 Fan Speed Control with Internal Transformer andOne P266 Pressure Transducer and One 2 m (6.6 ft) CableP266SNR-1C0 to 35 bar (0 to 508 psig)208/2401210P266EEA-3K2P266 Fan Speed Control with Internal Transformer andOne P266 Pressure Transducer and One 2 m (6.6 ft) CableP266SNR-2C0 to 52 bar (0 to 754 psig)208/2401210P266EFA-1K2P266 Fan Speed Control with Internal Transformer andOne P266 Pressure Transducer and One 2 m (6.6 ft) CableP266SNR-1C0 to 35 bar (0 to 508 psig)208/24012131.24 VAC Class 2 at 1/4 A.2.Factory default settings: Start voltage is set to 40% of the supply line voltage. End voltage is set to 95% of the supply line voltage. Start pressure is set to 44% of the total pressure range of the P266 Pressure Transducer. End pressure is set to 51% of the total pressure range of the P266 Pressure Transducer. Table 2: P266 Series Fan Speed Control Model and Kit Product Code Numbers, Descriptions, and Details (Part 3 of 3)Product Code NumberDescriptionTransducerModel Includedin KitVoltage (in VAC)Maximum OutputAmperesHigh VAC TriacsAvailable Auxiliary Fan Control Circuits1IMPORTANT:When two P266 Series Transducers are connected to a P266 SeriesControl, the transducers must be the same model (product code number). Failure to connect the same P266 Series Transducer models to the P266 Series Control can result in erratic control behavior.Table 3: P266 Series SNR Electronic Pressure TransducersProduct Code NumberDescriptionP266SNR-1CElectronic Pressure Transducer: 0 to 35 bar (0 to 508 psig) Total Range with a 1/4 in. SAE Female Flare Connection and a 2 Meter (6.6ft) CableP266SNR-2CElectronic Pressure Transducer: 0 to 52 bar (0 to 754 psig) Total Range with a 1/4 in. SAE Female Flare Connection and a 2 Meter (6.6ft) CableP266 Series Single-Phase Condenser Fan Speed Controls Product Bulletin7® Johnson Controls and PENN are registered trademarks of Johnson Controls in theUnited States of America and/or other countries. All other trademarks used herein are the propertyof their respective owners. © Copyright 2018 by Johnson Controls. All rights reserved.www.penncontrols.comTechnical Specifications P266 Series Single-Phase Condenser Fan Speed ControlsInput Supply Power208/240 VAC 50/60 Hz, 380/460 VAC 50/60 Hz, or 460/575 VAC 50/60 Hz, Depending on the Model (Refer to the Label inside the P266 Series Control Housing Cover for Rated Voltage Range and Model-Specific Wiring Diagram)Short Circuit Current RatingSuitable for Use on a Circuit Capable of Delivering Not More Than 5,000 rms Symmetrical Amperes, 600 Volts Maximum When Protected by Class H FusesLow-Voltage Power SupplyP266A, P266B, and P266C Types: External 24 VAC Class 2, 20 VA Supply TransformerP266E Types: Low Voltage Power for P266 Series Control is Provided by an Onboard TransformerNote:When auxiliary fan starters are connected to P266E type controls, you must provide an external Safety Extra-Low Voltage (SELV) AC supply to power the fan starters.Ambient Operating ConditionsTemperature: -40 to 60C (-40 to 140F)Humidity: Up to 95% RH Non-condensing; Maximum Dew Point 29C (85F)Ambient Shipping and StorageConditionsTemperature: -40 to 85C (-40 to 185F)Humidity: Up to 95% RH Non-condensing; Maximum Dew Point 29C (85F)Low Voltage Connections1/4 in. Quick-Connect Terminals, 30 m (100 ft) Maximum Wiring RunsInput TransducerP266SNR-x Pressure Transducer: 5 VDC for 0.5 to 4.5 VDC Ratiometric Analog SignalEnclosure TypeNEMA 3R, IP54Case ConstructionAluminum Die CastingCover ConstructionUV Stabilized PolycarbonateDimensions (H x W x D)159 x 177 x 70 mm (6-1/4 x 7 x 2-3/4 in.)WeightHeaviest Model Weight: 1.0 kg (2.2 lb)Approximate Shipping Weight: 1.2 kg (2.6 lb)ComplianceNorth America: cULus, File E244421;FCC Compliant to CFR47, Part 15, Subpart B, Class AIndustry Canada (IC) Compliant to Canadian ICES-003, Class A LimitsEurope: CE Mark – JohnsonControls declares that this product is in compliancewith the essential requirements and other relevant provisions of the EMCDirective 2004/108/EC and the Low Voltage Directive 2006/95/EC.Australia: C-Tick Compliant (N1813)The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond thesespecifications, contact Johnson Controls Refrigeration Application Engineering at 1-800-275-5676 or 1-414-524-5535. JohnsonControls shall not be liable for damages resulting from misapplication or misuse of its products.United States Emissions ComplianceThis equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when this equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his/her own expense.Canadian Emissions ComplianceThis Class (A) digital apparatus meets all the requirements of the Canadian Interference-Causing Equipment Regulations.Cet appareil numérique de la Classe (A) respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.Next >