Tranquility
®
D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e
R e v. : 1 0 M a r c h , 2 0 1 5
50
G e o t h e r m a l H e a t i n g a n d C o o l i n g
Connection to Non-Communicating thermostat and AXM
communicating control in Tranquility
®
Digital Air Handler
B-R
68.
Non-Communicating
2 Cool / 3 Heat Thermostat
Compressor
Compressor Stage 2
Communicating
TAH AXM Control
Y1
Y2
O
R
G
C
DH
AL1
Y1
Y2
Non-communicating thermostat with communicating
compressor section and communicating air handler
DXM2 In
Compressor
Section
Fault LED
L
Reversing Valve
O
W
Auxiliary Heat
W
24Vac Hot
R
Fan
G
24Vac Common
C
DH
Dehumidification
(ATP32U04 Only)
C
A+
B-
24V
C
A+
B-
24V
Non-Communicating
2 Cool / 3 Heat Thermostat
Compressor
Compressor Stage 2
Communicating
TAH AXM Control
Y1
Y2
O
R
G
C
DH
AL1
Y1
Y2
Non-communicating thermostat with communicating
compressor section and communicating air handler
DXM2 In
Compressor
Section
Fault LED
L
Reversing Valve
O
W
Auxiliary Heat
W
24Vac Hot
R
Fan
G
24Vac Common
C
DH
Dehumidification
(ATP32U04 Only)
C
A+
B-
C
A+
B-
24V
24V
ATC32U02
24
V
B
-
A
+
C
Thermostat Connections
C
24V Common for Control Circuit
R
24V Supply for Control Circuit
A+
Communications (Positive)
B –
Communications (Negative)
Non CLM
Typical Thermostat
Compressor
Compressor Stage 2
Non CLM
Typical
Air Handler
Y1
Y2
O
R
G
C
Y1
Y2
DXM2 Board
Compressor
Section
Electric Heat
W
Reversing Valve
O
24Vac Hot
R
Fan
G
24Vac Common
C
AL1
Alarm
E
Electric Heat
L
W2
W1
Y1
Y2
O
R
G
C
LT2
Sensor
LT2
LT2
Air Coil Freeze
Protection
Note: LT2 sensor is shipped on both TES and TEP.
Thermostat Connections
C
24V Common for Control Circuit
R
24V Supply for Control Circuit
A+
Communications (Positive)
B –
Communications (Negative)
