Johnson Controls P266AA, P266AB, P266AC, P266AD, P266BC User Guide

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Page 1

Figure 1: P266 Single-Phase Condenser

Fan Speed Control Mounting Dimensions, mm (in.)

165

(6-1/2)

(7)

P266 Series Single-Phase Condenser Fan Speed Control

Installation Instructions

P266xxx-x

Refer to the QuickLIT Web site for the most up-to-date version of this document.

Part No. 24-7664-2705, Rev. E

Issued September 3, 2010

Supersedes August 27, 2010

Application

IMPORTANT: Use this P266 Series Single-Phase

Condenser Fan Speed Control only as an operating control. Where failure or malfunction of the P266 Series 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 P266 Series Fan Speed Control.

CAUTION: Risk of Property Damage

Use only single-phase Permanent S plit Capacitor (PSC) motors approved by the manufacturer for speed control application with the P266 Series control. Failure to use a single-phase PSC motor may damage the motor and other property.

The P266 Series Single-Phase Condenser Fan Speed Control is a cost-effective, compact, weather-resistant, and durable speed control for single-phase PSC motors used in a wide variety of low-ambient refrigeration and air conditioning condenser applications.

The P266 Series Fan Speed Controls are designed to replace the Johnson Controls® P66 Series and P215 Series Fan Speed Controls and provide additional features and application flexibility.

Mounting

Location Considerations

Observe these guidelines when locating and mounting a P266 Series Fan Speed Control:

• Ensure that the mounting surface and mounting hardware can support the control and wiring.

178

FIG:p266_dims

76 (3)

(2-5/8)

• Mount the P266 Series control upright on a vertical surface with the heat sink fins oriented vertically and the conduit/electrical holes facing down.

• Ensure that air can flow through the heat sink fins and provide 10 cm (4 in.) minimum clearance around the heat sink.

• Mount the P266 Series control in a location away from sources of excessive heat and within the specified ambient operating conditions. See

Technical Specifications

conditions.

for ambient operating

P266 Series Single-Phase Condenser Fan Speed Control Installation Instructions 1

Page 2

Wiring

Figure 2: P266 Series Control Physical Features and Low-Voltage Wiring

24 VAC Class 2 Supply Po wer Wiring

for , , and Type Cont r ols

P266A P266B P266C

24 VAC Class 2

Power Supply

120/240 VAC

Primary Supply

Power

(Optional)

for , , and Type Contro ls

P266A P266B P266C

24 VAC

V P C

wire the P2 terminals the same

as P1 term in als.

Pressure Transduce r Cl ass 2

Wiring for Models

All P266

Wht

Red

Blk

DIP Switch Block

Earth Ground

Connection

Push-Button

LED

M2M1

L2/N L2/N

1 2 3

V P C

Primary Supply

Power

(Optional)

Class 2 Powe r

Wiring for Type Control s

P266 E

Power Supply

FIG:P266_lwV_wi rng

Refer to the model-specific wiring diagram located on the interior label of the P266 Series control and observe these guidelines when wiring the P266 Series control:

IMPORTANT: Do not exceed the P266 Series Fan Speed Control electrical rating s. Exceeding P266 Series control electrical ratings can result in permanent damage to the P266 Series control and void any warranty.

WARNING: Risk of Electric Shock.

Disconnect or isolate all power supplies before making electrical connections. More than one disconnect or isolation may be required to completely de-energize equipment. Contact with components carrying hazardous voltage can cause electric shock and may result in severe personal injury or death.

IMPORTANT: Do not connect supply power to the P266 Series control before finishing wiring and checking all wiring connections. Short circuits or improperly connected wires can result in damage to the P266 Series control and vo id an y war ra nt y.

IMPORTANT: Use 60/75 C copper conductors only . Make all wiring in accordance with local, national, and regional regulations.

IMPORTANT: Electrostatic discharge can damage P266 control components. Use proper Electrostatic Discharge (ESD) precautions during installation and servicing to avoid damaging P266 components.

• Ensure that the wires between the P266 Series control and the fan motor do not exceed 15 m (50 ft).

• Wires connected to the line-voltage terminal block must be 3.31 mm

(12 AWG) or smaller.

• Low-voltage wires must be less than 30 m (100 ft).

24 VAC Class 2 Fan Control Wiri ng

1 2 3

Fan 1 Star t e r

Fan 2 Star t e r

Pressure Transduce r

If a second P266 transd ucer is used ,

Low-Volta ge ( <30 V) Cla ss 2 Auxi l iary Fan Control

Low-Voltage (<30V)

P266 Electronic

1 2

Fan 3 Star t e r

Exter nal Low- Volt age SELV

Line-Voltage VAC

Fan 1 Start er

Fan 2 Start er

Fan 3 Start er

P266 Series Single-Phase Condenser Fan Speed Control Installation Instructions2

Page 3

Low-Voltage Wiring

Figure 3: High-Voltage Wiring Options for P266A, P266B, and P266C Type Controls

M2 M1

L2/N

M3 M2 M1 L1 L2/N

Optional

Low-Speed

Capacitor

(LSC)

Auxilary

Capacitor

Auxiliary

Windings

Main

Windings

PSC

Motor

Line VAC

M3 M2 M1 L1 L2/N

Optional

Low-Speed

Capacitor

(LSC)

Auxilary

Capacitor

Auxiliary

Windings

Main

Windings

PSC

Motor

208/240 VA C

Main

Windings

PSC

Motor

Auxilary

Capacitor

Auxiliary

Windings

Line VAC

Note:

Some P266A, P2 6 6B

and P266C models d o not

have M2 or M3 Triacs.

Split Winding/Three Triac with LSC Wiring

for P266A Type Controls

(208/240 VAC Only)

Two Triac with LSC Wirin g fo r

P266A, P266B and P266C Type Controls

(208/240 V AC, 460/57 5 VA C )380/4 60 VAC, and

One Triac Wiring for

P266A, P266B, and P266C Type Controls

()

208/2 40 VA C , 380/460 V AC, and 460/575 VAC

A B

FIG:p266_NA_HiV_wirng

Figure 4: High-Voltage Wiring Options for P266E Type Controls

M2 or M3 Triacs.

M2 M1

Windings

(208/240 VAC Only)

M2 M1

L1 L2/N

L2/N

PSC

Motor

Main

Windings

Auxiliary

Windings

Auxilary

Capacitor

208/240 VA C

for P266E Type Controls

(208/240 VAC Only)

M2 M1

L1 L2/N

L2/N

Main

Windings

Auxilary

208/240 VAC

for P266E Type Controls

(208/240 VAC Only)

Optional

Low-Speed

Capacitor

(LSC)

Optional

Low-Speed

Capacitor

(LSC)

Figure 2 shows the P266 Series control features under the housing cover and the low-voltage wiring diagrams for the P266A, P266B, P266C, and P266E T y pe control models.

High-Voltage Wiring

Figure 3 shows the high-voltage wiring diagrams for the P266A, P266B, and P266C Type control models. Figure 4 show the high-voltage wiring diagrams for the P266E Type control models.

IMPORTANT: The L2/N terminal must be connected to line voltage in order for a P266 Series control to comply with the FCC and IEC Class B radio frequency interference emissions limit.

Use Table 1 to determine the high-voltage wiring options available for P266A, P266B, P266C, and P266E Type control models.

Split-Winding/Three Triac with LSC Wiring

Two Triac with LSC Wiring

Capacitor

Auxiliary

PSC

Motor

Single Triac Wiring

for P266E Type Controls

Main

Windings

Note:

Some P266E mode ls d o not have

L1 L2/N

Auxilary

Capacitor

Auxiliary

PSC

Motor

L2/N

208/240 VA C

FIG:p266_E_HiV_w irng

P266 Series Single-Phase Condenser Fan Speed Control Installation Instructions 3

Page 4

Table 1: Product Type High-Voltage Wiring Options and Voltage Ranges

Product Type Number

Split Winding/ Three Triac with Low-Speed

Two Triac with Low-Speed Capacitor

Single Triac

Capacitor 208/240 VAC 208/240 VAC 380/460 VAC 460/575 VAC 208/240 VAC 380/460 VAC 460/575 VAC

P266AA P266AB P266AC P266AD P266BC P266BD P266BG P266BH P266EA P266EB P266EC P266ED P266EE P266EF P266CH

See Figure 3A See Figure 3B -- -- See Figure 3C -- -See Figure 3A See Figure 3B -- -- See Figure 3C -- --

-- -- -- -- See Figure 3C -- --

-- -- -- -- -- -- See Figure 3C

-- -- -- See Figure 3B -- -- See Figure 3C

-- -- -- See Figure 3B -- -- See Figure 3C See Figure 4A See Figure 4B -- -- See Figure 4C -- -See Figure 4A See Figure 4B -- -- See Figure 4C -- --

-- -- -- -- See Figure 4C -- --

-- -- See Figure 3B -- -- See Figure 3C

Setup and Adjustments

All P266 Series controls ship with factory-set default values and mode settings. In most applications, the default values and modes do not require field adjustment.

If your P266 Series control application requires you to change the value or mode settings, you must:

1. Calculate the new values and determine the new mode settings required for your application. (See

P266 Series Control Values and Modes

2. Change the existing settings on the control to the new values and modes using the P266 Series control setup interface. (See Setting Values and Modes.)

P266 Series Control Setup Interface

The P266 Series control setup interface consists of a DIP switch block with eight binary switches, a push button switch, and a green Light-Emitting Diod e (LED) (Figure 2). You can change the factory-set default values and modes by repositioning the DIP switches and saving the new settings. The number of LED flashes (in sequence) indicates which value and/or modes that you are saving. See Table 2 for more information about LED flash sequences, values, and modes.

During normal operation, the green LED is on. When you press and hold the push button, the LED goes off for 3 seconds then flashes two times. The LED then goes off again for 3 seconds and flashes three times, and continues in this pattern until seven flashes or until you release the push button.

Each sequence of flashes indicates a value or a value and set of mode settings. Releasing the push button after the desired flash sequence saves the value and/or modes that are currently set on the DIP switch block. See Table 2 for more information.

After you complete the setup, set all of the DIP switches to the ON position to lock out the push button operation.

P266 Series Control Values and Modes

P266 Series controls have up to ten values and modes (in six flash sequences) that can be changed in the field. See Table 2 for more information about flash sequences and the associated values and modes.

Start Voltage Value

The start voltage (VAC) is the voltage delivered by the P266 Series control to the fan motor to run the motor at minimum speed in your application.

The Start Voltage value is a percentage of the P266 Series control’s input voltage. Use the following formula to calculate the Start Voltage value for your application.

P266 Series Single-Phase Condenser Fan Speed Control Installation Instructions4

Page 5

Start Voltage (VAC)

P266 Control

Start Voltage

Value (%)

P266 Transducer Pressure

Range (bar or psi)

Start Pressure

Value

P266 Transducer Pressure

Range (bar or psi)

End Pressure

Value

Figure 5: Relationship between

P266 Fan Speed Control Variables

Pressure

End

Start

Voltage

End

Voltage

Mode

Off

Low

Pressure

Mode

Input Line- Voltage (V AC)

Low Pressure Mode

Low Pressure Mode determines whether the fan motor is either On (at start voltage/minimum speed) or Off when the sensed pressure at the P266 transducer is below the start pressure setpoint.

Start Pressure Value

Start pressure (psi or bar) is the pressure setpoint at which the P266 Series control outputs the start voltage and runs the fan motor at minimum speed. Start Pressure value is a function of the start pressure setpoint and the pressure range of the referenced P266 transducer. Use the following formula to calculate the Start Pressure value. See Table 3 for P266 transducer pressure ranges.

Start Pressure

Setpoint (bar or psi )

250

End Pressure Value

The end pressure setpoint is the pressure (bar or psi) at which the P266 Series control outputs the End Voltage and runs the fan motor at maximum speed. End Pressure value is a function of the end pressure setpoint and the total pressure range of the referenced transducer. Use the following formula to determine your application End Pressure value. See Table 3 for P266 transducer pressure ranges.

End Pressure

Setpoint (bar or psi )

250

Split Winding Mode

Some single-phase PSC motors have split motor winding wire leads. Setting the Split Winding mode On enables the M2 Triac to provide voltage to the main windings (and not the auxiliary windings), which increases motor efficiency (Figure 3A and Figure 4A).

Note: Split Winding mode is available for only 240 VAC 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 enabled the Split Winding mode.

Copeland Digital Scroll™ Compressor Mode 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.

End Voltage Mode

End voltage is the voltage output by the P266 Series control (as a percentage of the full voltage) that is maintained when the monitored pressure is equal to or greater than the End Pressure. The End Voltage mode can be set to either 95% or 97% of the total input voltage. See Figure 5.

Voltage to Motor

FIG:

266_Valu_Rels

Low Pre ssure Mode

Start

Pressure

Pressure at Sensor

P266 Series Single-Phase Condenser Fan Speed Control Installation Instructions 5

Page 6

Low-Speed Capacitor Mode

Figure 6: Low-Speed Capacitor Ope r ation

Pressure

End

Start

Voltage

End

Voltage

LPM Off

LPM On

Low-Speed Capacitor

Enabled

Disabled

Chan geover Voltage

FIG:

Figure 7: Speed-Controlle d (P266) Fan Opera ting

with One Auxiliary (On/Off) Fan Stage

over the Entire Pressure Range

Pressure

End

Pressure

Total

1st

Stage

Fan

Output

% Fan

Overlap

Plus

Output

P266 Fan

Stage

Shift

Fig:AuxFanOvrlap

In some fan speed applications, a (user-supp lied ) Low-speed capacitor (LSC) can be connected to the P266 Series control’s M3 triac and the controlled fan motor (Figure 3 and Figure 4). The low-speed capacitor is enabled at low voltages to enhance the fan motor efficiency and performance. Set Low-speed Capacitor mode to On when a low-speed capacitor is used.

Low-Speed Capacitor

Voltage to Motor

266_CV_Rels

Start

Pressure at Se ns or

Pressure

Figure 7 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-co ntrolled (P266) fan to a n ew start pressure.

Fan Throttling Range

Aux.Fan

Auxiliary

Off

Output Capacity

Start

P266 Fan

Pressure at Sensor

Note: The optional low-speed capacitor should be equal in both the voltage range and the microfarad value to the auxiliary capacitor supplied by the manufacturer, but the capacitor must not exceed 15 microfarads.

Note: You must also set the Changeover Voltage value when a low-speed capacitor is used in your P266 Series control application. See Changeover Voltage Value and Determining Changeover Voltage Value for more information on setting the Changeover Voltage value.

Auxiliary Fan Stage Mode

You can set 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 (Figure 2) can be wired to control the auxiliary fan motor/stage starters. See Table 2 for information on setting the number of auxiliary fans used in your application.

P266 Series Single-Phase Condenser Fan Speed Control Installation Instructions6

Auxiliary Fan Overlap Value

Auxiliary Fan Overlap value determines the pressure range overlap (as a percentage of the total pressure [throttling] 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).

Note: If the P266 Series control is set for no auxiliary fans, the Auxiliary Fan Overlap value is not used. See Table 2 for information on setting the number of auxiliary fans used in your application.

Changeover Voltage Value

The Changeover Voltage value determines the voltage at which the P266 Series control enables and disables the M3 triac and the low-speed capacitor (Figure 6). See Determining Changeover Voltage Value

Page 7

Setting Values and Modes

Figure 8: A DIP Switch Block with the

Switches Positioned for a Setup Value of 185

FIG:p266_DIP_swtch

To change settings and values on a P266 Series control:

1. Determine the operating pressure setpoints (psi or bar), voltage inputs and outputs (VAC), and the other modes of operation required for your condenser fan motor control application.

2. Convert the selected pressure setpoints (psi or bar) and voltage targets (VAC) into P266 Series control values. See P266 Series Control Values and Modes and Table 2.

3. Position the DIP switches to set the new values and/or modes. See Setting up the DIP Switch Block.

4. Press and hold the push button until th e number of LED flashes indicates the desired value or set of values and/or mode settings. Release the push button after:

• two flashes to save the Low Pressure mo de

setting and the Start Voltage value

• three flashes to save the Start Pressure value

2. Position the numbered switches to ON so that the total of the switch numbers (in the ON position) equals the desired setup value. Start with the highest number switch that is less than the setup value. (For example, if the desired setup value is 185, position switch 128 to ON first. Then position switch 32 ON, followed by switch 16, switch 8, and switch 1 [128+32+16+8+1=185] [Figure 8]).

Mode settings require you to position only one or two switches on the DIP switch block, depending on the mode. See Table 2 for more information about the values and modes that are associated with the number of LED flashes.

128

• four flashes to save the End Pressure value

• five flashes to save the Split Winding, End Voltage, Low-speed Capacitor Mode, and Auxiliary Fan Stages mode settings

• six flashes to save the Auxiliary Fan Overlap value

• seven flashes to save the Changeover Voltage value

Note: See Table 2 for more information about the values and modes that are associated with the number of LED flashes.

5. Repeat Steps 3 and 4 for the next value and/or mode you need to change.

6. After you save all of the new values and mode settings, set all of the DIP switches to the On position to lock out the push button operation.

Setting up the DIP Switch Block

To set new values and modes on the DIP switch block:

1. Position all of the switches on the DIP switch block to the Off position.

IMPORTANT: All of the switches on the DIP switch block must be set to the proper positions for your application before you press and release the push button to save the values and/or mode settings. See Table 2 for more information on switch positions.

Test Voltage Mode

Test Voltage mode is a setup and diagnostic tool in the P266 Series control firmware that allows you to test a condenser fan motor’s operation at different voltage values in the field and determine the optimal Start Voltage value for your P266 Series control application.

Test Voltage mode also allows you to determine and set the optimal Changeover Voltage value for the M3 triac in P266 Series control applications that use a low-speed capacitor.

To use the Test Voltage Mode, you need:

• a P266 Series control model designed for your condenser fan application

• access to the condenser (and fan motor) controlled by your P266 Series control

• a clamp-on ampere meter with 15 A range (to check changeover current draw when determining Changeover Voltage value)

P266 Series Single-Phase Condenser Fan Speed Control Installation Instructions 7

• an insulated probe to hold down the push-button and change the DIP switch positions

Page 8

• a 24 VAC Class 2 power supply (only for P266 Series control models that require an external 24 VAC power supply)

• a Low-Speed Capacitor (LSC), sized for the fan motor (only for P266 Series control applications that use a low-speed capacitor)

Note: The LSC should be equal in both the voltage range and the microfarad value to the motor manufacturer’s auxiliary capacitor, but the LSC must not exceed 15 microfarads.

Setting up Test Voltage Mode

Before you power on a P266 Series control and enable the Test Voltage mode on the control:

1. Read and follow the guidelines and procedures in the Mounting

2. Mount and wire the P266 Series control in your condenser application and observe these additional guidelines:

• Refer to the label inside the P266 Series

control housing cover for model-specific wiring details. See Wiring

• Wire the auxiliary and main windings according

to the motor manufacturer’s instructions and your application requirements. Split the windings (at the winding leads) and power them separately, if your application and motor allow for split-winding operation. See Figure 3 and Figure 4.

• If your application uses an optional low-speed

capacitor, wire the LSC to the M3 triac and motor only after you have checked and recorded the current draw at maximum. See

Determining Changeover Voltage Value

• If your P266 Series control model requires an

external 24 VAC power supply for control operation, wire that power supply to the control. (Refer to the wiring label inside the P266 Series control cover for external power supply requirements.)

•You do not have to connect, wire, or power the

P266 transducer, or put a load on the condenser to operate a P266 Series control in the Test Voltage mode. Test Voltage mode allows you to use the DIP switch to set the voltage supplied to the motor by the P266 Series control.

and Wiring sections.

for some wiring options.

3. Set up the P266 Series control and the condenser fan motor for the intended operation, by setting the required values and modes of operation for your condenser fan application. See Setup and Adjustments for procedures.

Determining Changeover Voltage Value

In the Test Voltage mode, you can determine and set the Changeover Voltage value for P266 Series control applications that use an optional low-speed capacitor. To determine and set the Changeover Voltage value:

1. Mount, wire, and set up the P266 Series control and the condenser fan motor for operation in the Test Voltage mode. See Setting up Test Voltage Mode.

Note: Do not wire the low-speed capa citor until Step 6 of this procedure.

2. Set all of the DIP switches except switch 1 to the ON position; set switch 1 to OFF.

3. Apply line-voltage power to the P266 Series control (and the external 24 V AC p ower supply on required models), then, within the first 30 seconds after applying power , press and release th e push button three times. The LED goes off and stays off, and the fan motor accelerates to maximum speed (at 95 or 97% of maximum voltage) and stays at the maximum voltage for up to 5 minutes.

4. At maximum voltage, use the clamp-on ampere meter to check the current draw (in amperes) of the fan motor auxiliary windings and record the auxiliary windings current draw for the motor at maximum voltage.

5. Disconnect line-voltage power to the P266 Series control (and the external 24 VAC power supply on required models).

6. Wire the low-speed capacitor to the M3 triac and the motor auxiliary windings. (See Figure 3 and Figure 4 for M3 triac wiring options.)

7. Set all of the DIP switches except switches 8 and 32 to the OFF position; set switches 8 and 32 to the ON position. (8 + 32 = 40% of maximum voltage value.)

8. Apply line-voltage power to the P266 Series control (and the external 24 V AC p ower supply on required models), then, within the first 30 seconds after applying power , press and release th e push button three times. The LED goes off and stays off, and the fan motor accelerates to the speed at 40% of the maximum voltage (for up to 5 minutes).

P266 Series Single-Phase Condenser Fan Speed Control Installation Instructions8

Page 9

9. At 40% of maximum voltage, use the clamp-on ampere meter to check the current draw (in amperes) of the fan motor auxiliary windings connected to both capacitors and record the current draw for the auxiliary winding at 40% voltage.

10. Repeat Step 7 but increase the percent voltage value by 8%, then repeat Step 8, Step 9, and Step 10 at the increased voltage values until the current draw equals the (maximum voltage) current draw recorded in Step 4.

Note: If the motor stops or does not run smoothly, reduce the voltage value on the DIP switches by 4% and test the motor operation.

11. The DIP switch voltage value is now equal to the highest voltage of the low-speed mode or the Changeover Voltage value.

12. Press and hold the push button until the LED flashes 3 times, then release the button. The Changeover Voltage value is set and saved on the P266 Series control.

Note: If you want to also determine and set the Start Voltage value for your P266 Series control and motor, you can go directly to S tep 3 of the

Determining Start Voltage Value

13. Disconnect power to the P266 Series control and set all of the DIP switches to the On position to lock out the push button operation.

14. Reconnect power to the P266 Series control to resume normal motor speed control.

Determining Start Voltage Value

In the Test Voltage mode, you can also determine and set the Start Voltage value on for P266 Series control application.

To determine and set the Start Voltage value:

1. Mount, wire, and set up the P266 Series control and the condenser fan motor for operation in the Test Voltage mode. See Setting up Test Voltage Mode.

procedure.

Note: If your application uses Split Winding mode and Low Speed Capacitor mode, wire the split windings and low-speed capacitor according to your application requirements (Figure 3A and Figure 4A).

2. Apply line-voltage power to the P266 Series control (and the external 24 V AC p ower supply on required models), then, within the first 30 seconds after applying power , p ress and r elease th e pu sh b utto n three times. The LED goes off and stays off.

3. Position the DIP switches so that the total value of the switches positioned ON is equal to a percentage value equal to or slightly higher than your estimated St art V oltage value. (For example, if you estimate the start voltage of the motor to be 25% of the total voltage, position switches 16, 8 , 4, and 2 ON. 16 + 8 + 4 + 2 = 30%, which is slightly higher than your 25% estimate.) The fan motor accelerates to the speed at 30% of maximum voltage and stays at that speed.

4. Observe the fan motor opera tion an d de te rm in e if the applied start voltage runs the motor at the desired start speed:

• If the start speed and motor operation meet

your application requirements, go to Step 5.

• If the start speed or operation does not meet

your application requirements, return to Step 3 and set a new estimated Start Voltage value to generate the desired motor start speed.

5. When your motor is running at the desired start speed (Start Voltage value), press and hold the push button until the LED flashes 2 times in succession, then release the push button. The Start Voltage value is set and saved on the P266 Series control.

6. Disconnect power to the P266 Series control and set all of the DIP switches to the ON position to lock out the push button operation.

7. Reconnect power to the P266 Series control to resume normal motor speed control.

P266 Series Single-Phase Condenser Fan Speed Control Installation Instructions 9

Page 10

Table 2: LED Flash Sequences, Setup Values, Mode Settings on DIP Switch Block and Default Values and Mode Settings Example

Release

Push Button

After...

Value/Mode Name

(Binary Switch Number)

Value Range/Mode

Settings (Example

Default Settings)

Switch Number and Position

Description of Value/Setting

DIP Switch Block

Example Default

Settings

Two Flashes Low Speed Mode

(Switch 128)

Settings: ON or Off

(Default Setting:

Off

)

Switch 128 Off = No voltage to motor when sensed pressure is

below start pressure.

Switch 128 ON = Start voltage to motor when sensed pressure is

at or below start pressure.

Start Voltage Value

(Switches 1 to 64)

V alue Range: 10 to 90

(Default Value:

)

Position Switches 1 to 64 ON or Off so that the sum of the

switches set to ON equals the Start Voltage Value.

Three Flashes Start Pressure Value

(Switches 1 to 128)

V alue Range: 10 to 230

(Default Value:

110

)

Position Switches 1 to 128 ON or Off so that the sum of the

switches set to ON equals the Start Pressure Value.

Four Flashes End Pressure Value

(Switches 1 to 128)

V a lue Range: [Start

Pressure + 8] to 240

(Default Value:

129

)

Position the Switches 1 to 128 ON or Off so that the sum of the

switches set to ON equals the End Pressure Value.

Five Flashes

(Switches 64 and

128 Off)

Split Winding Mode

(Switch 32)

Settings: ON or Off

(Default Setting:

Off

)

Switch 32 ON = M2 Triac enabled to power split windings.

Switch 32 Off = M2 Triac is disabled.

End Voltage Mode

(Switch 16)

Settings: ON or Off

(Default Setting:

Off

)

Switch 16 ON = Provides 95% of P266 input voltage to motor.

Switch 16 Off = Provides 97% of P266 input voltage to motor.

Digital Scroll Compressor

Algorithm

(Switch 8)

Settings: ON or Off

(Default Setting:

Off

)

Switch 8 ON = Digital Scroll algorithm enabled.

Switch 8 Off = Digital Scroll algorithm disabled.

Low Speed Capacitor Mode

(Switch 4)

Settings: ON or Off

(Default Setting:

Off

)

Switch 4 ON = Low-speed capacitor is available.

Switch 4 Off = Low-speed capacitor is not available.

Number of Auxiliary Fan

Stages

(Switches 1 and 2)

Settings: ON or Off

(Default Setting:

Off -

Off

)

Position switches 1-Off and 2-Off for no auxiliary fans.

Position switches 1-On and 2-Off for auxiliary fan 1.

Position switches 1-Off and 2-On for auxiliary fans 1 and 2.

Position switches 1-On and 2-On for auxiliary fan 1, 2, and 3.

Six Flashes

(Switch 128 Off)

Auxiliary Fan Overlap

(Switches 1 to 64)

V alue Range: 1 to 90

(Default Value:

)

Position Switches 1 to 64 ON or Off so that the sum of the

switches set to ON equals the Auxiliary Fan Overlap Value.

Seven Flashes

(Switch 128 Off)

Changeover Voltage Value

(Switch 1 to 64)

Value Range: 10 to 80

(Default Value: 60)

Position Switches 1 to 64 ON or Off so that the sum of the

switches set to ON equals the Changeover Voltage value.

1 2

16 32 64

128

1 2 4

16 32 64

128

1 2 4

16 32 64

128

1 2 4

8 16 32

64 128

1 2 4

8 16 32

128

1 2 4

16 32 64

128

P266 Series Single-Phase Condenser Fan Speed Control Installation Instructions10

Page 11

P266 Electronic Pressure Transducers

P266 Series controls are designed to reference either one or two Johnson Controls P266 Electronic Pressure Transducers to monitor condenser pressure.

P266 transducers are specialized versions of the P499 Series Electronic Pressure Transducers designed for use with P266 Series controls. See Table 3 for the available P266 transducer models.

Note: On P266 Series control applications that use two P266 transducers, the P266 Series control always references the transducer that is sensing the highest pressure.

IMPORTANT: When two P266 transducers are connected to a P266 Series control, the transducers

Refer to the P499 Series Electronic Pressure T ransducers Product/Technical Bulletin (LIT-1201 1190) for information on installing P266 transducers.

Table 3: P266SNR Electronic Pressure

Transducers

Product

Description Code Number

P266SNR-1C Electronic Pressure Transducer:

0 to 35 bar (0 to 508 psi) total range

with a 1/4 in. SAE Female Flare

connection and a 2 meter (3.1 ft) cable.

P266SNR-2C Electronic Pressure Transducer:

0 to 52 bar (0 to 754 psi) total range

with a 1/4 in. SAE Female Flare

connection and a 2 meter (3.1 ft) cable.

must be the same model (product code number). Failure to connect the same P266 transducer models to the P266 Series control can result in erratic control behavior.

Technical Specifications

P266xxx-x Single-Phase Condenser Fan Speed Control

Input Supply Power 208/240 VAC 50/60 Hz, 380/460 VAC 50/60 Hz, or 480/575 VAC 50/60 Hz depending on

model (Refer to the label inside the P266 control housing cover for rated voltage range and model-specific wiring diagram.)

Short Circuit Current Rating

Low-Voltage Power Supply

Ambient Operating Conditions

Ambient Shipping and Storage Conditions

Low-Voltage Connections 1/4 in. Quick-Connect terminals, 30 m (100 ft) maximum wiring runs Input Transducer P266SNR-x Pressure Transducer: 5 VDC for 0.5 to 4.5 VDC ratiometric analog signal Enclosure Type NEMA 3R, IP54 Case Construction Aluminum Die Casting Cover Construction UV Stabilized Polycarbonate Dimensions (HxWxD) 159 x 177 x 70 mm (6-1/4 x 7 x 2-3/4 in.) Weight Heaviest Model Weight: 1.0 kg (2.2 lb)

Compliance North America: cULus File 244421;

Suitable For Use On A Circuit Capable Of Delivering Not More Than 5,000 rms Symmetrical Amperes, 600 Volts Maximum When Protected By Class H Fuses.

P266A, P266B, and P266C Types: External 24 VAC Class 2, 20 VA Supply Transformer P266Exx Types: Low-voltage power for P266 control is provided by an onboard transformer. Note: 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 (Figure 2).

T emperature: -40 to 60°C (-40 to 140°F) Humidity: Up to 95% RH non-condensing; Maximum Dew Point 29°C (85°F)

T emperature: -40 to 85°C (-40 to 185°F) Humidity: Up to 95% RH non-condensing; Maximum Dew Point 29°C (85°F)

Approximate Shipping Weight: 1.2 kg (2.6 lb)

FCC Compliant to CFR47, Part 15, Subpart B, Class B Industry Canada (IC) Compliant to Canadian ICES-003, Class B limits

Europe: CE Mark – Johnson Controls, Inc., declares that the P266 Series Single-Phase Condenser Fan Speed Controls are in compliance with the essential requirements and other relevant provisions of the EMC Directive 2004/108/EC and Low Voltage Directive 2006/95/EC.

Australia: C-Tick Compliant (N1813)

P266 Series Single-Phase Condenser Fan Speed Control Installation Instructions 11

Page 12

Metasys® and Johnson Controls® are registered trademarks of Johnson Controls, Inc.

Building Efficiency

507 E. Michigan Street, Milwaukee, WI 53202

The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these specifications, consult Johnson Controls Application Engineering at (414) 524-5535. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products.

United States Emissions Compliance (FCC)

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help.

Canadian Emissions Compliance

This Class (B) digital apparatus meets all the requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numérique de la Classe (B) respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

P266 Series Single-Phase Condenser Fan Speed Control Installation Instructions12

Published in U.S.A. www.johnsoncontrols.com