4
Fig. 7 — Equipment Control Module Mounting
Fig. 8 — Standoff Installed on Equipment Control
Module
16. Match and connect equipment wires to proper terminals
of each connector block, being careful not to over tighten
the screws. Correct polarity must be observed when con-
necting the two wires from the equipment control module
to the display module
mounting base. If wires are con-
nected incorrectly, the display module will not operate.
See Fig. 9.
17. Snap cover over top of equipment control module. See
Fig. 10.
18. Turn on power to equipment. On power up, all display
segments will light for 5 seconds. For the next 5 seconds,
a 2-digit code will appear on the center of the large dis-
play which identifies the equipment configuration:
AC — Two-stage heat / Two-stage cool
HP — Three-stage heat / Two-stage cool
Fig. 10 — Cover Installed on Equipment Control
Module
Fig. 9 — Control Module Connector Block Terminals
a33-9169
RELAY
S
OAT
RR
S
S
RTN
HUM
D1
D2
V+
Vg
Rc
Rh
W1
G
Y2
C
O/W2/B
Y1
CONNECT
TO U
S
ER
INTERFACE
DRY
CONTACT
OAT/RR
S
RETURN
JW6
TWI
S
T
OFF
S
EPARATE
RC/RH BY
BLACK
BREAKING
JW6 ON
CONTROL
MODULE
BOARD.
RED
LEGEND
OAT
—
Outdoor Air Temperature Sensor
RAS
—
Remote Room Temperature Sensor
a33-9170
a33-9168
a33-9171