Installation - Economizer - Light Commercial User Manual

Modu lat ing Downflow Economizer
Notes:
1. S1–Pin 2 connection is:
a. connected to "Yellow" side of gas valve on package gas/electric units.
b. connected to "W" low voltage terminal on package air conditioning units.
c. connected to “O” thermostat terminal on package heat pump units.
See “Notes for Use with Heat Pumps”, Page 6, for required economizer wiring changes.
2. For mechanical cooling (compressor) to energize during economizer cooling mode of operation, a thermostat
"Y2" call must be present. A 2 stage cooling thermostat is required for this application.
Date: March 14, 2012
Supercedes: 03-07-12
Drawn by: MGL
Unit #: 47-314-06D
Di a gram#: 4731406DW
Ap proved by:
WIRE COLOR CODE
BLK Black
BLU Blue
GRN Green
GRY Gray
ORN Orange
RED Red
VIO Violet
WHT White
YEL Yellow
COMPONENT CODE
C7150C Mixed Air Sensor
C7400A Fresh Air Sensor
M7415A Damper Actuator 24v
P1 Economizer Plug
S1 Unit Plug
TB-11 Terminal Board
W7459A Logic Module
Re vi sion Change Date
A Added notes to drawing 03-07-12
B Changed Note 1 03-14-12
HARNESS DETAIL
CE# = WIRE END DESIGNATION
E2 STUD #6 18 Ga. Wire
E3 Female ¼ Quick Disc.
E4 Male ¼ Quick Disc. Insul
E6 Wire Nut Size 73B
E7 Raw End
E8 Female
3
16
Quick Disc.
HAR NESS
ENDS AT P1
See Unit Wiring Diagram for Connections