Service manual

27
climatemaster.com
Tranquility
®
22 Digital (TZ) Series IOM - 60Hz HFC-410A
Rev.: 17 Jan., 2013B
Electrical - Low Voltage Wiring
Low Voltage Field Wiring
Accessory Connections
A terminal paralleling the compressor contactor coil
has been provided on the DXM2 control. Terminal “A” is
designed to control accessory devices. Note: This terminal
should be used only with 24 Volt signals and not line voltage.
Terminal “A” is energized with the compressor contactor (see
Figure 26).
Alarm
Relay
Comp
Relay
24Vdc
EH1
EH2
P6
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
sU yrot
c
aF
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
Gnd
NC
1 2 3 4
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Accessory
Relays
Accessory
Terminal
The DXM2 controller includes two accessory relays ACC1
and ACC2. Each relay includes a normally open (NO) and
a normally closed (NC) contact. Accessory relays may be
confi gured to operate as shown in Tables 8a and 8b.
Figure 24: Tranquility Low Voltage Field Wiring Table 7: Accessory Relay 2 Confi guration
Table 6: Accessory Relay 1 Confi guration
DIP 2.1 DIP 2.2 DIP 2.3 ACC1 Relay Option
ON ON ON Cycle with fan
OFF ON ON N/A for Residential Applications
ON OFF ON Water valve – Slow opening
ON ON OFF Outside air damper
OFF ON OFF ClimaDry option – Dehumidistat
OFF OFF OFF ClimaDry option – Humidistat
OFF OFF ON N/A for Residential Applications
ON OFF OFF N/A for Residential Applications
All other DIP combinations are invalid
DIP 2.4 DIP 2.5 DIP 2.6 ACC2 Relay Option
ON ON ON Cycle with compressor
OFF ON ON N/A for Residential Applications
ON OFF ON Water valve – Slow opening
OFF OFF ON Humidifi er
ON ON OFF Outside air damper
All other DIP combinations are invalid
Figure *: Accessory Connections