Connect Control Inputs; Connect Control Outputs - Carrier 19DV Series Installation, Operation And Maintenance Instructions

NOTE: The dry contacts for the field inputs should be located as close to the unit as possible. The field wiring
should be capable of preventing electrical noise or induced voltage and should not be routed with any wires with
voltage over 50 v.

3.6.1 CONNECT CONTROL INPUTS

Wiring may be specified for a spare safety switch, and a remote start/stop contact can be wired to the terminal
strip. Additional spare sensors and control modules may be specified as well. Carrier Comfort Network® (CCN)
communication is wired to the machine HMI panel.
Wiring may be specified for a remote start/stop contact, a remote emergency stop contact, an ice build contact, a
spare safety switch, a power request feedback switch, a cooler water flow switch and a condenser water flow
switch can be wired to the control panel field terminal strip. Additional spare sensors may be specified for auto
demand limit input, refrigerant leak sensor, common CHWS temperature sensor, auto water temp reset and
common CHWR temp sensor can be wired to the control panel field terminal strips as well. These are wired to the
machine control panel. See electrical wiring diagrams.

3.6.2 CONNECT CONTROL OUTPUTS

Wiring maybe specified for a chiller alarm relay, a free cooling mode relay and a power request relay can be wired
to the control panel field terminal strip. Additional analog output signals may be specified for chiller running status
(on/off/ready) and head pressure output can be wired to the control panel field terminal strips as well. These are
wired to the machine control panel. See electrical wiring diagrams.
Terminal
IOB1 BLOCK
#
AI1 J16 1-5
AI2 J16 2-6
AI3 J16 3-7
AI4 J16 4-8
AI5 J15 6-12
AI6 J15 5-11
AI7 J15 4-10
AI8 J15 3-9
AI9 J15 2-8
AI10 J15 1-7
AI11 J10 1-7
AO1 J14 1-4
AO2 J14 2-5
AO3 J14 3-6
DI1 J13 1-5
DI2 J13 2-6
DI3 J13 3-7
DI4 J13 4-8
DO1 J12 6-7
DO2 J12 9-10
DO3 J12 1-2
DO4 J12 4-5
Terminal
IOB2 BLOCK
#
AI1 J16 1-5
AI2 J16 2-6
AI3 J16 3-7
AI4 J16 4-8
AI5 J15 6-12
AI6 J15 5-11
Point Description
Entering chilled water
temperature
Leaving chilled water
temperature
Entering condenser water
temperature
Leaving condenser water
temperature
Evap. refrigerant liquid
temperature
Comp Discharge temperature
Condenser pressure
Evaporator pressure
FS VFD Load current
Chiller Status Output mA
Evap Water Flow Switch
Cond Water Flow Switch
Remote contact input
Remote emergency stop input
Economizer bypass valve
Refrigerant Pump
Chiller Alarm Relay
Vapor Venting Line SV
Point Description
Motor winding temperature 1
EC valve feedback Ma
Pump Outlet Pressure
Bearing Outlet pressure
Designation for
Point name
wiring diagram
ECW RT1
LCW RT2
ECDW RT7
LCDW RT8
EVAP_T RT15
DGT RT21
COND_P BP1
EVAP_P BP3
VFDC_MA -
CHST_OUT Chiller status
EVAP_FS -
COND_FS -
REM_CON Remote on/off
Remote emergency
E_STOP
stop
ECBY_VLV EBPV
REF_PUMP KM1233
ALM K112
VAPL_SV -
Designation for
Point name
wiring diagram
MTRW1 RT31C
HGBP_MA Y11 13-14
PUMPO_P BP81
BRGO_P BP71
Comments
For freestanding VFD option - customer
terminals
used in std
User option, dry contact "Closed"
indicates "Flow" / not connected in std
User option, dry contact "Closed"
indicates "Flow" / not connected in std
User option, dry contact "Closed"
indicates Turn ON chiller
User option, dry contact "Closed"
indicates Chiller Emergency stop
Factory option
not used / special
Comments
factory option / 4 - 20 mA
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