Penn P266 Series User manual

P266 Series Single-Phase Condenser Fan Speed Controls Installation Instructions 1
Refer to the QuickLIT website for the most up-to-date version of this document.
Application
The 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
Johnson Controls® 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.
IMPORTANT: Use this P266 Series Single-Phase
Condenser Fan Speed Control only as an operating
control. Where failure or malfunction of the P266
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
control.
IMPORTANT : Utiliser ceP266SeriesSingle-Phase
Condenser Fan Speed Control uniquement en tant
que dispositif de contrôle de fonctionnement.
Lorsqu'une défaillance ou un dysfonctionnement du
P266 control risque de provoquer des blessures ou
d'endommager l'équipement contrôlé ou un autre
équipement, la conception du système de contrôle
doit intégrer des dispositifs de protection
supplémentaires. Veiller dans ce cas à intégrer de
façon permanente d'autres dispositifs, tels que des
systèmes de supervision ou d'alarme, ou des
dispositifs de sécurité ou de limitation, ayant une
fonction d'avertissement ou de protection en cas de
défaillance ou de dysfonctionnement du P266
control.
!
CAUTION: Risk of Property Damage
Use only single-phase Permanent
Split-Capacitor (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.
MISE EN GARDE : Risque de dégâts
matériels.
Utiliser uniquement les moteurs PSC
(Permanent Split-Capacitor)
monophasés approuvés par le fabricant
pour les applications de régulation de
vitesse avec le régulateur P266.
L'utilisation d'un moteur autre qu'un
moteur PSC monophasé risque
d'endommager le moteur et de provoquer
d'autres dégâts matériels.
P266 Series Single-Phase Condenser Fan Speed
Controls
Installation Instructions
P266xxA-xx
Part No. 24-7664-2705, Rev. H
Issued March 2016

P266 Series Single-Phase Condenser Fan Speed Controls Installation Instructions2
North American Emissions Compliance
United States
Canada
Fan Speed Control with Multiple Motors
The P266 Series Single-Phase Condenser Fan Speed
Control can be used to modulate multiple identical
motors in an application. Care must be taken to ensure
that the combined motor amperagedraw of the multiple
motors being modulated does not exceed the rating of
the P266 Series Control. Be aware that as the
individual motor speed is reduced, the amperage draw
of each motor can increase above the listed amperage
rating of the motor.
Consider the following when wiring multiple motors in
parallel:
• If a 12 ampere model of P266 Series Control is
used with multiple external rotor motors, it is
recommended that the total rated amperes (based
on the motor nameplates) not exceed 9.5 amperes.
• When using three triac 8 ampere models but
connecting only a single triac, it is recommended
that the total rated amperes (based on the motor
nameplates) not exceed 6.5 amperes.
Note: If the sum of the motor nameplate current
ratings exceeds 80% of the rating of the P266 Series
Control, there may be performance issues at system
startup. The cause of these issues would not strictly be
the current draw, but also the low inductance of the
multiple motors. To ensure proper operation at system
startup, always test the application prior to installation.
This equipment has been tested and found to
comply with the limits for a Class A digital device
pursuant to Part 15 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.
This 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.
Figure 1: P266 Single-Phase Condenser
Fan Speed Control Mounting Dimensions, mm (in.)
165
(6-1/2)
178
(7)
76
(3)
66
(2-5/8)
FIG:p266_dims

P266 Series Single-Phase Condenser Fan Speed Controls Installation Instructions 3
Mounting
Location Considerations
Observe these guidelines when locating and mounting
a P266 Series Single-Phase Condenser Fan Speed
Control:
• Ensure that the mounting surface and mounting
hardware can support the control and wiring.
• 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 for ambient operating
conditions.
Wiring
Refer to the model specific wiring diagram located on
the interior label of the P266 Series Single-Phase
Condenser Fan Speed Control, and observe these
guidelines when wiring the P266 Series Control:
• 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 mm2(12 AWG) or smaller.
• Low voltage wires must be less than 30 m (100 ft).
!
WARNING: Risk of Electric Shock.
Disconnect or isolate all power supplies
before making electrical connections.
More than one disconnection 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.
AVERTISSEMENT : Risque de
décharge électrique.
Débrancher ou isoler toute alimentation
avant de réaliser un branchement
électrique. Plusieurs isolations et
débranchements sont peut-être
nécessaires pour -couper entièrement
l'alimentation de l'équipement. Tout
contact avec des composants
conducteurs de tensions dangereuses
risque d'entraîner une décharge
électrique et de provoquer des blessures
graves, voire mortelles.
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 void any warranty.
IMPORTANT: Do not exceed the P266 Series
Control electrical ratings. Exceeding P266 Series
Control electrical ratings can result in permanent
damage to the P266 Series Control and void any
warranty.
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 Series Control components. Use proper
Electrostatic Discharge (ESD) precautions during
installation and servicing to avoid damaging P266
Series Control components.

P266 Series Single-Phase Condenser Fan Speed Controls Installation Instructions4
Figure 2: P266 Series Control Physical Features and Low Voltage Wiring
24 VAC Class 2 Supply Power Wiring
for , , and Type Controls
P266A P266B P266C
24 VAC Class 2
Power Supply
120/240 VAC
Primary Supply
Power
A
C
Fan 2 Starter
(Optional)
Fan 3 Starter
(Optional)
Fan 1 Starter
(Optional)
A
1
2
3
F
24 VAC Class 2 Fan Control Wiring
for , , and Type Controls P266A P266B P266C
24 VAC
V
P
C
P1
P266 Electronic
Pressure Transducer
If a second P266 transducer is used,
wire the P2 terminals the same
as P1 terminals.
Pressure Transducer Class 2
Wiring for Models
All P266
WhtRed
Blk
DIP Switch Block
Earth Ground
Connection
Push-Button
LED
M3 M2M1 L2/N L2/N
A
C
A
1
2
3
FV
P
C
V
P
C
P2
P1
Line-Voltage VAC
Primary Supply
Power
Fan 2 Starter
(Optional)
Fan 3 Starter
(Optional)
Fan 1 Starter
(Optional)
Low-Voltage (<30V)
Class 2 Power
Low-Voltage (<30 V) Class 2Auxiliary Fan Control
Wiring for Type Controls P266E
C
1
2
3
F
External Low-Voltage SELV
Power Supply
FIG:P266_lwV_wirng

P266 Series Single-Phase Condenser Fan Speed Controls Installation Instructions 5
Low-Voltage Wiring
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 Type
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.
Use Table 1 to determine the high voltage wiring
options available for P266A, P266B, P266C, and
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.
Figure 3: High Voltage Wiring Options for P266A, P266B, and P266C Type Controls
M3 M2 M1 L1
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 VAC
Main
Windings
PSC
Motor
Auxilary
Capacitor
Auxiliary
Windings
Line VAC
Note:
Some P266A, P266B
and P266C models do 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 Wiring for
P266A, P266B and P266C Type Controls
(208/240 VAC, 460/575 VAC)380/460 VAC, and
One Triac Wiring for
P266A, P266B, and P266C Type Controls
()
208/240 VAC, 380/460 VAC, and 460/575 VAC
A B C
FIG:p266_NA_HiV_wirng
Figure 4: High Voltage Wiring Options for P266E Type Controls
Note: Some P266E models do not have
M2 or M3 Triacs.
M3 M2 M1
L1 L2/N L2/N
208/240 VAC
Auxilary
Capacitor
Auxiliary
Windings
PSC
Motor
Main
Windings
Single Triac Wiring
for P266E Type Controls
(208/240 VAC Only)
M3 M2 M1 L1 L2/N L2/N
PSC
Motor
Main
Windings Auxiliary
Windings
Auxilary
Capacitor
208/240 VAC
Split-Winding/Three Triac with LSC Wiring
for P266E Type Controls
(208/240 VAC Only)
M3 M2 M1 L1 L2/N L2/N
PSC
Motor
Main
Windings
Auxiliary
Windings
Auxilary
Capacitor
208/240 VAC
Two Triac with LSC Wiring
for P266E Type Controls
(208/240 VAC Only)
Optional
Low-Speed
Capacitor
(LSC)
Optional
Low-Speed
Capacitor
(LSC)
A BC
FIG:p266_E_HiV_wirng

P266 Series Single-Phase Condenser Fan Speed Controls Installation Instructions6
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, and a green 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.
Table 1: Product Type High Voltage Wiring Options and Voltage Ranges
Product
Type
Number
Split Winding/
Three Triac
with
Low-Speed
Capacitor
Two Triac with
Low-Speed Capacitor Single Triac
208/240 VAC 208/240 VAC 380/460 VAC 460/575 VAC 208/240 VAC 380/460 VAC 460/575 VAC
P266AA See Figure 3A See Figure 3B -- -- See Figure 3C -- --
P266AB See Figure 3A See Figure 3B -- -- See Figure 3C -- --
P266AC -- -- -- -- See Figure 3C -- --
P266AD -- -- -- -- See Figure 3C -- --
P266BC -- -- -- -- -- -- See Figure 3C
P266BD -- -- -- -- -- -- See Figure 3C
P266BG -- -- -- See Figure 3B -- -- See Figure 3C
P266BH -- -- -- See Figure 3B -- -- See Figure 3C
P266EA See Figure 4A See Figure 4B -- -- See Figure 4C -- --
P266EB See Figure 4A See Figure 4B -- -- See Figure 4C -- --
P266EC -- -- -- -- See Figure 4C -- --
P266ED -- -- -- -- See Figure 4C -- --
P266EE -- -- -- -- See Figure 4C -- --
P266EF -- -- -- -- See Figure 4C -- --
P266CH -- -- See Figure 3B -- -- See Figure 3C

P266 Series Single-Phase Condenser Fan Speed Controls Installation Instructions 7
The start voltage value is a percentage of the
P266 Series Control input voltage. Use the following
formula to calculate the start voltage value for your
application.
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 (psig 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.
End Pressure Setpoint Value
The end pressure setpoint is the pressure (bar or psig)
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.
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.
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
installation instructions to determine if your fan motor
may be wired to enable 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 mode 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.
Start Voltage (VAC)
P266 Control
Input Line- Voltage (VAC)
Start Voltage
Value (%)
Start Pressure
Setpoint (bar or psi)
P266 Transducer Pressure
Range (bar or psi)
X
250
=
Start Pressure
Value
End Pressure
Setpoint (bar or psi)
P266 Transducer Pressure
Range (bar or psi)
X
250
=
End Pressure
Value
Figure 5: Relationship between
P266 Series Control Variables
Start
Pressure End
Pressure
0
Start
Voltage
End
Voltage
Mode
Low Pressure Mode
Off
Voltage to Motor
Low
Pressure
Mode
On
Pressure at Sensor
Vo
ltage
toMotor
FIG:
p
266_Valu_Rels

P266 Series Single-Phase Condenser Fan Speed Controls Installation Instructions8
Low-Speed Capacitor Mode
In some fan speed applications, a (user-supplied)
low-speed capacitor can be connected to the
P266 Series Control 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 the low-speed
capacitor mode to on when a low-speed capacitor is
used.
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 the 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.
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-controlled (P266) fan to a new
start pressure.
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 the Changeover Voltage Value.
Figure 6: Low-Speed Capacitor Operation
Start
Pressure End
Pressure
0
Start
Voltage
End
Voltage
LPM
Off
Voltage to Motor
LPM On
Pressure at Sensor
Low-Speed Capacitor
Enabled
Low-Speed Capacitor
Disabled
Voltage
toMotor
Changeover Voltage
CV
FIG:
p
266_CV_Rels
Figure 7: Speed-Controlled (P266) Fan Operating
with One Auxiliary (On/Off) Fan Stage
over the Entire Pressure Range
Start
Pressure End
Pressure
0
Pressure at Sensor
Total
1st
Stage
P266FanOutput
Auxiliary
Fan
Output
% Fan
Overlap
Aux.Fan
Plus
P266 Fan
Output
P266 Fan
Stage
Shift
P266FanOutput
Output Capacity
On
Off
Fan Throttling Range
Fig:AuxFanOvrlap

P266 Series Single-Phase Condenser Fan Speed Controls Installation Instructions 9
Setting Values and Modes
To change settings and values on a P266 Series
Control:
1. Determine the operating pressure setpoints (psig
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 (psig 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 the 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 mode
setting and the start voltage value
• three flashes to save the start pressure value
• 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.
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.
Test Voltage Mode
Test voltage mode is a setup and diagnostic tool in the
P266 Series Control firmware that allows you to test
the operation of a condenser fan motor 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)
• an insulated probe to hold down the push button
and change the DIP switch positions
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.
Figure 8: A DIP Switch Block with the
Switches Positioned for a Setup Value of 185
128
64
32
16
8
4
2
1
ON
FIG:p266_DIP_swtch

P266 Series Single-Phase Condenser Fan Speed Controls Installation Instructions10
• 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, sized for the fan motor (only
for P266 Series Control applications that use a
low-speed capacitor)
Note: The low-speed capacitor should be equal in
both the voltage range and the microfarad value to the
auxiliary capacitor of the motor manufacturer, but the
low-speed capacitor must not exceed 15 microfarads.
Setting Up the 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 and Wiring sections.
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 for some wiring options.
• Wire the auxiliary and main windings according
to the motor manufacturer 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 low-speed capacitor to the
M3 triac and motor only after you have
checked and recorded the current draw at
maximum. See Determining the 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.)
•Youdonot 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.
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 the 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 the Test Voltage
Mode.
Note: Do not wire the low-speed capacitor 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 VAC power
supply on required models), then within the first
30 seconds after applying power, press and
release the 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 VAC power supply on
required models), then within the first 30 seconds
after applying power, press and release the 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 Controls Installation Instructions 11
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 (maximumvoltage) 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 push 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 Step 3 of the Determining the
Start Voltage Value procedure.
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 the Start Voltage Value
In the test voltage mode, you can also determine and
set the start voltage value for the 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 the Test
Voltage Mode.
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.
2. Apply line voltage power to the P266 Series
Control (and the external 24 VAC power supply on
required models), then within the first 30 seconds
after applying power, press and release the push
button three times. The LED goes off and stays off.
3. Position the DIP switches so that the total value of
the switches positioned onis equal to a percentage
value equal to or slightly higher than your
estimated start voltage 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
to 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 operation and determine 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 pushbutton. 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 Controls Installation Instructions12
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) Value Range: 10 to 90
(Default Value: 40)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) Value 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) Value 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) Value Range: 1 to 90
(Default Value: 10)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.
128
64
32
16
8
4
2
1
ON
128
64
32
16
8
4
2
1
ON
128
64
32
16
8
4
2
1
ON
128
64
32
16
8
4
2
1
ON
128
64
32
16
8
4
2
1
ON
128
64
32
16
8
4
2
1
ON

P266 Series Single-Phase Condenser Fan Speed Controls Installation Instructions 13
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.
Refer to the P499 Series Electronic Pressure
Transducers Product/Technical Bulletin
(LIT-12011190) for information on installing
P266 Transducers.
Technical Specifications
IMPORTANT: When two P266 Transducers are
connected to a P266Series Control, the transducers
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.
Table 3: P266SNR Electronic Pressure
Transducers
Product
Code
Number
Description
P266SNR-1C Electronic Pressure Transducer:
0 to 35 bar (0 to 508 psig) Total Range
with a 1/4 in. SAE Female Flare
Connection and a 2 m (3.1 ft) Cable
P266SNR-2C Electronic Pressure Transducer:
0 to 52 bar (0 to 754 psig) Total Range
with a 1/4 in. SAE Female Flare
Connection and a 2 m (3.1 ft) Cable
P266xxx-x Series Single-Phase Condenser Fan Speed Controls (Part 1 of 2)
Input Supply Power 208/240 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 Rating 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
Low-Voltage Power Supply P266A, P266B, and P266C Types: External 24 VAC Class 2, 20 VA Supply Transformer
P266E Types: Low Voltage Power for P266 Series 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.
Ambient Operating Conditions Temperature: -40 to 60C (-40 to 140F)
Humidity: Up to 95% RH Non-condensing; Maximum Dew Point 29C (85F)
Ambient Shipping and
Storage Conditions Temperature: -40 to 85C (-40 to 185F)
Humidity: Up to 95% RH Non-condensing; Maximum Dew Point 29C (85F)
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 (H x W x D) 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)
Approximate Shipping Weight: 1.2 kg (2.6 lb)

Published in U.S.A. www.johnsoncontrols.com
P266 Series Single-Phase Condenser Fan Speed Controls Installation Instructions14
® Johnson Controls and PENN are registered trademarks of Johnson Controls, Inc. in the
United States of America and/or other countries. All other trademarks used herein are the property
of their respective owners. © Copyright 2016 by Johnson Controls, Inc. All rights reserved.
Building Efficiency
507 E. Michigan Street, Milwaukee, WI 53202
Compliance North America: cULus, File E244421;
FCC Compliant to CFR47, Part 15, Subpart B, Class A
Industry Canada (IC) Compliant to Canadian ICES-003, Class A Limits
Europe: CE Mark – Johnson Controls, Inc., declares that this product is in
compliance with the essential requirements and other relevant provisions of the
EMC Directive and the Low Voltage Directive.
Australia and New Zealand: RCM, Australia/NZ Emissions Compliant
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond
these specifications, contact Johnson Controls Refrigeration Application Engineering at 1-800-275-5676 or 1-414-524-5535.
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products.
P266xxx-x Series Single-Phase Condenser Fan Speed Controls (Part 2 of 2)
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