Comfort-Aire HTS Series Split System,Two Stage, 2-5 Tons - Manual (Page 27)

27
Installation, Operation & Maintenance HTS SERIES SPLIT SYSTEM Heat Controller, LLC
Figure 26a: DXM2 Layout and Connections
P1
Alarm
Relay
Comp
Relay
O
Y1
Y2
W
G
C
R
AL1
24Vdc
EH1
EH2
P6
R
C
Off On
JW3
A
OVR
ESD
C
R
NSB
AL2
JW1
Acc1
Relay
Acc2
Relay
H
COM1
NC1
NO1
COM2
NC2
NO2
P3 CO
RV
RV
LT1
LT1
LT2
LT2
LP
LP
HP
HP
P7
Status Fault
R
R
CC
CCG
CO
S1
S2
1
12
1
4
e
s
U
yr
ot
c
a
F
(240Vac)
Com
N.O.
Fan Enable
Micro
U1
Off On
P2
COH
COM AO2
P11
Gnd T1
P10
T2 T2 T3 T3 T4 T4 T5
P9
T5 T6 T6
A0-1 A0-2
Off On
S3
RV
Relay
CCH
Relay
Test
P5
B- Gnd
P4
A+ 24V (240Vac)
Fan Speed
N.O.
N.C.
12V
OUT
Gnd
P8
IN
NC
P12
1 2 3 4
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Service tool
connection
Communicating
stat connection
Conventional
stat connection
Cabinet
temperature
sensor
(with variable
speed pump)
24V to compressor
second-stage solenoid
for Y2/full
load capacity
Use 4 mounting screws
#6 sheet metal screw
1” long
Configure
modulating valve
or variable
speed pump
Variable speed pump Entering water temp Leaving water temp Leaving air temp
Electric heat
connection
Factory low
voltage molex
connection for
unit harness
Entering Hot water
Temperature
Compressor Discharge
temperature
ECM Motor
Connection
Test Button
to Speed up
Time Delays
Communications
and HWG
Settings
Water Coil
Low Temp
Limit Setting.
JWT-LT1 jumper
should be clipped
for low temp
(antifreeze)
operation
Accessory
relays refer
to DXM2 AOM
for configuration
IOM