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