Installation Guide
8
18-HD68D1-10
Diagram 2 - 1 or 2 Stage Cooling w/TAM9 in communication mode Air Handler
1
2
3
4
SOV
STG2
STG1
STG1
STG3
STG2
FAN
PWM
HUM
HUM
AUX1
AUX1
AUX2
AUX2
24V
ONL
Y
24V
ONL
Y
24V
ONL
Y
O
Y1
Y2
W1
W2
W3
G
BK
HUM*
HUM*
AUX1*
AUX1*
AUX2*
AUX2*
RELAY PANEL
1- 1 OR 2 STAGE COOLING W/TAM7 OR TAM9 MODEL VARIABLE SPEED AIR HANDLER
O
R
B
YI
YO
BK
Y2
W1
W2
W3
G
INDOOR UNIT
R
B
Y/Y1
Y2
OUTDOOR UNIT
NOTES:
1. Cut and remove the BK jumper at the indoor unit
AFC Board
2. YI and YO connections must be made as shown
for freeze protection and internally mounted
condensate overflow circuits to function properly
3. If a 3rd party overflow condensate switches are
installed, wire between Y1 of the Relay Panel and
YI of the airflow control board
4. R connection at outdoor unit is required only for two
compressor / two stage units
5. D terminal is on TAM9 ONLY.
*See note on page 7 regarding HUM and AUX
terminals.
Caution: Do not run Outdoor/Remote sensor wires in
the same bundle with HVAC wires. Also, keep away
from high voltage wiring to avoid interference.
COMMUNICATING
CONTROL
D
R
B
D
R
B
D
Section 5. Field Wiring Diagrams
AC Applications
Diagram 1 - 1 or 2 Stage Cooling w/TAM7 or TAM9 in 24 volt mode Model Air Handler
1
SOV
STG2
STG1
STG1
STG3
STG2
FAN
PWM
HUM
HUM
AUX1
AUX1
AUX2
AUX2
24V
ONL
Y
24V
ONL
Y
24V
ONL
Y
O
Y1
Y2
W1
W2
W3
G
BK
HUM*
HUM*
AUX1*
AUX1*
AUX2*
AUX2*
RELAY PANEL
1- 1 OR 2 STAGE COOLING WITH TAM9 MODEL VARIABLE SPEED AIR HANDLER
R
B
INDOOR UNIT
R
B
Y/Y1
Y2
OUTDOOR UNIT
NOTES:
1. R connection at outdoor unit is required only for two
compressor / two stage units
*See note on page 7 regarding HUM and AUX
terminals.
Caution: Do not run Outdoor/Remote sensor wires in
the same bundle with HVAC wires. Also, keep away
from high voltage wiring to avoid interference.
COMMUNICATING
CONTROL
D
R
B
D
R
B
D
