Emerson White-Rodgers 48P55-751 Directives D'installation

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
• 48P55-751 Air Handler Control
• Installation Instructions
48P55-751 is an aftermarket OEM Direct replacement control for Carrier and ICP air handlers. The control is designed for units
with PSC bower motors.
Input Voltage:
24 VAC, 50/60 Hz (Class II transformer)
Operating Temperature Range:
-40° to 176°F (-40° to 80°C)
Humidity Range:
5 to 95% relative humidity (non-condensing)
Timings:
Blower ON
Thermostat Call
Delay
Fan (G) None
Electric Heat (W) None
NOTE: Install all wiring according to local and national
electrical codes and ordinances
1. Prior to removing the old control, mark or take a picture of
the wiring connections.
2. Mount the new control using supplied sheet metal screws,
ensure the indicated ground points are secured.
3. Depending on the OEM wiring configuration of the
unit being serviced, the thermostat and transformer
connections can be made using either the 1/4" spade
Blower OFF
Delay (SW1)
0 or 90 seconds
None
INSTALLATION, MOUNTING, AND WIRING
emerson.com/white-rodgers
48P55-751
Carrier / ICP Air Handler Control
for PSC Blower Motors
INSTALLATION INSTRUCTIONS
• 4 – 3/4" Sheet Metal Screws
SPECIFICATIONS & TIMINGS
CAUTION
!
Risk of Electric Shock.
Disconnect electric power
to system until installation
is complete. Do not use on
circuit exceeding specified
voltage. Higher voltage will
damage control and could
cause shock or fire hazard.
This control is not intended
for use in locations where
it may come in contact with
water.
terminals or the 6-pin inline connector on the control.
Remove the protective cap from the spade terminal (SPT)
on top of the PSC relay and connect the motor and power
leads.
4. Select the blower off delay for fan (G) calls by setting the
dipswitch to either 0 or 90 seconds (default).
PARTS INCLUDED
DESCRIPTION
PART NO. 37-7746001
1929