CaptiveAire RTULink - RTULink to RTU Wiring

9
RTULink to RTU Wiring
The RTULink will
need to be wired to
the RTU in order to
send control signals.
Table 1 details the
“RTU” side terminals
on the RTULink and
the corresponding
terminal definitions.
Figure 5 shows the
wiring diagram for
the RTULink to RTU
control wiring. Not all
terminals will be
utilized on every unit.
Refer to the specific
RTU and thermostat
documentation to
determine which of
the terminals are
relevant to the
application.
When certain unique
options are present,
it is possible for one
or more of these
terminals to be
repurposed for a
different use. View
the remaining
subsections to
determine which
features will repurpose
board terminals.
Figure 5. RTULink – RTU Wiring
Table 1. RTULink to RTU Wiring Terminals
TERMINAL
LABEL
SIGNAL
VOLTAGE
RTULINK
INPUT/OUTPUT
SIGNAL DESCRIPTION
R
24 VAC
INPUT
24VAC THERMOSTAT TRANSFORMER
HOT
C
COMMON
INPUT
24VAC THERMOSTAT TRANSFORMER
NEUTRAL
G
24 VAC
OUTPUT
BLOWER
Y1
24 VAC
OUTPUT
1ST STAGE COOLING
Y2
24 VAC
OUTPUT
2ND STAGE COOLING
Y3
24 VAC
OUTPUT
3RD STAGE COOLING
W1
24 VAC
OUTPUT
1ST STAGE HEATING
W2
24 VAC
OUTPUT
2ND STAGE HEATING
W3
24 VAC
OUTPUT
3RD STAGE HEATING
E
24 VAC
OUTPUT
EMERGENCY HEAT
O/B
24 VAC
OUTPUT
HEAT PUMP REVERSING VALVE
AUX
24 VAC
OUTPUT
AUXILIARY
AIRFLOW
24 VAC
INPUT
AIRFLOW PROVING
ALARM 1
24 VAC
INPUT
CONFIGURABLE ALARM
ALARM 2
24 VAC
INPUT
CONFIGURABLE ALARM