P66 Series Electronic Fan Speed Controls Product Bulletin Johnson Inc. Air Conditioner F) 125465

User Manual: Johnson Controls Inc. Air Conditioner F)

Open the PDF directly: View PDF PDF.
Page Count: 7

P66 Series Electronic Fan Speed Controls Product Bulletin 1
The P66 Series Electronic Fan Speed Controls are
refrigerant pressure actuated, electronic motor-speed
controllers. The P66 controls are designed for use with
single-phase permanent split-capacitor motors that are
approved by the motor manufacturer for speed control
applications.
The P66 controls provide condenser pressure control
by directly sensing condenser refrigerant pressure and
automatically adjusting the condenser fan motor speed
according to the sensed pressure.
The P66 provides an alternative to fan cycling control
in many small and medium size refrigeration and
Heating, Ventilating, and Air Conditioning (HVAC)
applications.
Figure 1: P66 Dual Sensor Fan Speed Control
Table 1: Features and Benefits
Features Benefits
Exclusive Johnson Controls/PENN®
Pressure Transducer Responds quickly to condenser pressure changes and condenser air delivery
requirements
Soft Start Capability Provides a smooth fan startup, which reduces motor-starting noise and abrupt
changes in motor speed
208-240/277/480 VAC, 60 Hz Motor
Control Suitable for a wide range of condenser fan motor applications
One or Two Pressure Transducers Applicable to single- and multi-circuit condensers. The dual-sensor P66 control
models select the higher pressure input to control the fan speeds.
Two Effective Throttling Ranges
(ETRs) Provide either a 30 or 60 psi (207 or 414 kPa) ETR
NEMA 1 or NEMA 3R (Rainproof)
Enclosure Allows indoor and panel mounting or outdoor mounting applications
Built-in Voltage Surge Protection,
Radio Frequency Interference (RFI)
Suppression, and Ground Terminal
Screw
Achieves trouble-free operation
P66 Series Electronic Fan Speed Controls
Product Bulletin Code No. LIT-125465
Issued September 30, 2009
Supersedes March 23, 2006
P66 Series Electronic Fan Speed Controls Product Bulletin2
Application
The P66 Series Electronic Fan Speed Controls are
pressure-actuated electronic motor-speed controllers
designed primarily to control condenser fan motors on
Heating, Ventilating, Air Conditioning, and Refrigeration
(HVAC/R) applications (Figure 2). These controls
regulate the supply voltage to the fan motor in
response to the sensed refrigerant pressure, providing
direct response to changes in condenser pressure,
regardless of the variations in air delivery curves.
P66 controls are available with one or two pressure
sensor inputs. In dual sensor models, the control
selects the input with the greatest demand.
P66 control models are also available with NEMA 3R
(Rainproof) enclosures for outdoor applications
(Figure 1). These models come with a plastic
enclosure, appropriate gaskets, and low voltage wire
leads for 24 VAC power. In addition, the critical high
voltage components are encapsulated in a potting
compound.
Note: NEMA 1 models cannot be retrofitted in the
field to obtain the NEMA 3R (Rainproof) rating.
A P66 and speed control motor can replace On/Off fan
cycling controls, multiple speed motors, condenser
flood-back systems, temperature fan-speed controls,
and modulating louver systems.
Typical applications include:
• computer room air conditioning
• commercial air conditioning
• commercial refrigeration
The P66 Series controls must be applied only to
single-phase motors intended for use with a solid-state
motor speed control. An applicable motor must be a
single-phase, permanent split-capacitor motor and
must be:
• ball-bearing construction only (Sleeve-bearing
motors are not acceptable for use with P66
controls.)
• designed to handle non-sinusoidal waveforms
generated by solid-state motor speed controls
• designed to dissipate the motor heat generated at
reduced speed operation
Operation
Condensing unit installation, operation, and
maintenance determine the overall capability to
maintain a satisfactory pressure by means of fan speed
control. Within the operating range, the P66 control
provides air delivery in direct proportion to heat
rejection requirements. This allows the refrigeration
system to perform efficiently, even in very low ambient
temperatures.
The P66 pressure transducer provides direct response
to changes in condenser pressure, regardless of the
variations in fan delivery curves. The dual input models
select the pressure input from the transducer sensing
the highest pressure.
See Figure 2 for a typical operational sequence for a
P66 control.
Repair and Replacement
Do not make field repairs. For a replacement control,
contact the Original Equipment Manufacturer or your
local Johnson Controls/PENN distributor.
IMPORTANT: Use this P66 Series Electronic Fan
Speed Control only as an operating control. Where
failure or malfunction of the P66 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 P66 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 P66 control. Failure
to use a single-phase PSC motor may
damage the motor and other property.
P66 Series Electronic Fan Speed Controls Product Bulletin 3
Table 2: P66 Control Operation
Pressure Input Motor Voltage
Pressure is between 0 psig and the low end of the
operating range. 0 to 5 volts
Pressure is at the low end of the operating range. Start voltage: 10% to 40% of line - Model Specific (See
Table 3.)
Pressure is in the operating range. Motor voltage varies directly with system pressure from start
voltage to 90% of line voltage.
Pressure is above the operating range. A further pressure increase of 20 to 30 psi increases motor
voltage to 97% of the applied voltage.
Figure 2: Operation Chart for the P66 Fan Speed Control
97%
90%
10% to 40%
of Line
(Model Specific) No fan operation
in this
pressure range.
0
psig Operating Range
(190/250 psig) Operating Range
Plus 20 or 30 psi*
*20 psi for 30 psi Effective Throttling Range (ETR)
30 psi for 60 psi Effective Throttling Range (ETR)
350 psig
Motor Voltage
Pressure Input
P66 Series Electronic Fan Speed Controls Product Bulletin4
Figure 3: P66 Control and NEMA 3R Enclosure Dimensions, in./mm
5.33
135
4.20
107
4.72
120
NEMA 3R Enclosure
4.12
105
3.34
85
0.875
22.23 Diameter
Conduit Hole
(2 places)
Two 22 AWG Wire
Leads for 24 VAC
Power Supply
(NEMA 3R
Enclosure)
1.28
33
6.75
172
6.00
152
5.26
134
3.38
86 4.56
116 0.27
7
Diameter Mounting Holes
for No. 10 Screw
0.218
5.54
Two 0.250 Spade Terminals
for 24 VAC Power Supply
Inside Plug (NEMA 1 Enclosure)
Valve
Depressor
1/4 in. Flare
7/16 in.
20 UNF-2B
0.093
2.36
Diameter
Capillary
FIG:P66_DMS_ENCLOSURE
P66 Series Electronic Fan Speed Controls Product Bulletin 5
Ordering Information
Table 3: P66 Series Control Model Information1
1. All models are rated for 208-240/277/480 volt; 60 Hz except those with Product Code Numbers followed by an asterisk,
indicating 50 Hz Models.
Product Code Number Operating Pressure Range
(psig) Start Voltage
(% of Supply Voltage) Capillary Length (in.)
Single Input Sensor Models
P66AAB-1C 190-250 10 60
P66AAB-4C 135-165 10 60
P66AAB-6C 170-230 16 60
P66AAB-9C 170-230 40 60
P66AAB-10C 190-250 16 120
P66AAB-11C 140-200 16 60
P66AAB-13C 60-90 16 60
P66AAB-14C 220-280 40 120
P66AAB-15C 190-250 40 60
P66AAB-19C 115-145 40 60
P66AAB-25C 180-240 10 120
P66AAB-26C 220-280 40 60
P66AAB-34C 320-410 40 60
P66AAD-1C* 160-220 25 60
Dual Input Sensor Models
P66BAB-1C 190-250 10 60
P66BAB-3C 170-230 16 60
P66BAB-4C 190-250 16 120
P66BAB-5C 190-250 40 60
P66BAB-9C 320-410 40 60
P66BAD-1C* 160-220 25 60
NEMA 3R Models
P66ABB-21C 220-280 16 120
P66ABB-24C 190-250 16 60
P66ABB-27C 170-230 40 60
Table 4: Fan Speed Control Replacement Guide (Part 1 of 2)1
Original Control Model Number Replacement P66 Product Code Number
P15AJ-39 P66AAB-4C
P15AK-11 P66AAB-6C
P15AK-12 P66ABB-21C
P15AK-13 P66AAB-6C
P15AK-14 P66AAB-1C
P15DJ-5 P66AAB-6C
P15JJ-2 (Liebert® models) P66AAB-1C
P15JJ-2 (Non Liebert models) P66AAB-9C
P66 Series Electronic Fan Speed Controls Product Bulletin6
Technical Specifications
P15JJ-7 P66ABB-21C
P15JJ-8 P66AAB-1C
P65AAB-1 P66AAB-1C
P65AAB-2 P66AAB-1C
P65AAB-4 P66AAB-4C
P65AAB-6 P66AAB-6C
P65AAB-9 P66AAB-9C
P65AAB-10 P66AAB-10C
P65BAB-1 P66BAB-1C
P65BAB-2 P66BAB-1C
P65BAB-5 P66BAB-5C
P65AAB-2 P66AAB-1C
P66AAB-18 P66AAB-25C
P66AAB-21 P66ABB-21C
P66BAB-2 P66BAB-1C
P66BAB-4 P66BAB-1C
1. When two P15s are used in parallel with one motor, replace both P15s with one P66BAB. Select the P66BAB with an
operating range similar to that of the P15s being replaced. When replacing a P15 or P65 with a P66, 24 VAC must be
provided. It is recommended that the P66 be used only with low heat rise ball bearing motors that are approved by the motor
manufacturer for fan speed control operation. Start voltage for P15 motors = 40%.
Table 4: Fan Speed Control Replacement Guide (Part 2 of 2)1
Original Control Model Number Replacement P66 Product Code Number
P66 Series Electronic Fan Speed Controls (Part 1 of 2)
Pressure Ratings: Low Pressure Models Control Range: 80 to 200 psig (552 to 1,379 kPa)
Effective Throttling Range: 30 psig (207 kPa)
Maximum Working Pressure: 200 psig (1,379 kPa)
Maximum Overpressure: 250 psig (1,724 kPa)
Pressure Ratings: Medium Pressure Models Control Range: 140 to 350 psig (965 to 2,413 kPa)
Effective Throttling Range: 60 psig (414 kPa)
Maximum Working Pressure: 350 psig (2,413 kPa)
Maximum Overpressure: 400 psig (2,758 kPa)
Pressure Ratings: High Pressure Models Control Range: 300 to 500 psig (2,068 to 3,447 kPa)
Effective Throttling Range: 90 psig (621 kPa)
Maximum Working Pressure: 500 psig (3,447 kPa)
Maximum Overpressure: 610 psig (4,206 kPa)
Control Voltage 24 VAC, Class 2, 1 A
Line Voltage Range 208 to 480 VAC
Start Voltage 10% to 40% of line (Original Equipment Manufacturer [OEM] specified -
model specific)
Electrical Ratings: 208 VAC Full Load Amperes: 8.0
Locked Rotor Amperes: 16.5
Ambient Temperature Maximum: 130°F/54°C
Electrical Ratings: 240 VAC Full Load Amperes: 8.0
Locked Rotor Amperes: 16.5
Ambient Temperature Maximum: 130°F/54°C
Published in U.S.A. www.johnsoncontrols.com
P66 Series Electronic Fan Speed Controls Product Bulletin 7
Metasys® and Johnson Controls® are registered trademarks of Johnson Controls, Inc.
All other marks herein are the marks of their respective owners. © 2009 Johnson Controls, Inc.
Building Efficiency
507 E. Michigan Street, Milwaukee, WI 53202
Electrical Ratings: 277 VAC Full Load Amperes: 6.9
Locked Rotor Amperes: 14.3
Ambient Temperature Maximum: 130°F/54°C
Electrical Ratings: 480 VAC Full Load Amperes: 4.0
Locked Rotor Amperes: 10.5
Ambient Temperature Maximum: 150°F/66°C
Ambient Temperature Minimum -40°F/-40°C (at all voltages)
Ambient Storage Temperature -40°F/-40°C to 185°F/85°C
Construction Control Case: Galvanized steel case and cover
Base and Sensors: Galvanized steel
Plastic Enclosure: UV stabilized polycarbonate with closed cell foam
gasket (NEMA 3R models only)
Enclosure NEMA 1 or NEMA 3R (Rainproof)
Wiring Connections Low Voltage: 1/4 in. quick connects (NEMA 1); Two 6 in. 22 AWG Wire
Leads (NEMA 3R)
Line Voltage: 10-32 Screw Terminals
Pressure Connections 60 in./1.5 m or 120 in./3.0 m copper capillary with 1/4 in./6 mm flare nut
and Schrader® valve depressor
Mounting Vertical only; two holes for No. 10 screws at the top and bottom
Compliance UL Recognized (U.S.): File SA516, Guide SDFY2
UL Recognized (Canada): File SA516, Guide SDFY8
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these
specifications, contact Johnson Controls Application Engineering at 1-800-275-5676. Johnson Controls, Inc. shall not be liable for damages
resulting from the misapplication or misuse of its products.
P66 Series Electronic Fan Speed Controls (Part 2 of 2)

Navigation menu