Carrier AQUASNAP 30RB060-390 Controls, Start-Up, Operation, Service And Troubleshooting Instructions page 6

DESCRIPTION
Power (24 vac supply)
Local Equipment Network
Carrier Comfort Network ®
(CCN)
External Chilled
Water Pump Interlock
Chilled Water Flow Switch
Demand Limit Switch #1
Circuit A Discharge
Pressure Transducer
Circuit B Discharge
Pressure Transducer
Dual Chiller
LWT Thermistor
Dual Set Point Input
Entering Water Thermistor
Leaving Water Thermistor
Outdoor Air Thermistor
Pump #1 Interlock
Pump #2 Interlock
Reverse Rotation Board
Circuit A Suction
Pressure Transducer
Circuit B Suction
Pressure Transducer
Unit Status
Alarm Relay
Alert Relay
Cooler Heater
Circuit A Minimum
Load Control*
Circuit B Minimum
Load Control*
Pump #1 Starter
Pump #2 Starter
Ready Relay
* Controls discharge and liquid line isolation soleniods for 30RB120-190 brine units only.
Table 3 — Main Base Board Inputs and Outputs
INPUT/OUTPUT
—
—
—
PMPI
CWFS
Demand Limit SW1
Pressure Transducer
DPTA
Pressure Transducer
DPTB
DUAL
Dual Set Point
EWT
LWT
OAT
PMP1
PMP2
Reverse Rotation Board
Pressure Transducer
SPTA
Pressure Transducer
SPTB
Remote Contact-Off-Enable
ALM R
ALT R
CL-HT
MLV-A
MLV-B
PMP1
PMP2
RDY R
SCROLLING MARQUEE
I/O TYPE
POINT NAME
—
—
—
Switch INPUTS
Switch INPUTS
Switch INPUTS
PRESSURE
(0-5 VDC)
PRESSURE
(0-5 VDC)
5k Thermistor TEMPERATURE
Switch INPUTS
5k Thermistor TEMPERATURE
5k Thermistor TEMPERATURE
5k Thermistor TEMPERATURE
Switch INPUTS
Switch INPUTS
PRESSURE
(0-5 VDC)
PRESSURE
(0-5 VDC)
Switch INPUTS
Relay OUTPUTS
Relay OUTPUTS
TRIAC OUTPUTS
TRIAC OUTPUTS
TRIAC OUTPUTS
TRIAC OUTPUTS
TRIAC OUTPUTS
Relay OUTPUTS
6
CONNECTION POINT
Pin
MBB-J1, MBB-J1A,
MBB-J1B
—
11
12
MBB-J9A, MBB-J9B,
MBB-J9C, MBB-J9D
+
—
G
-
MBB-J12
+
—
G
-
 
GEN.I LOCK MBB-J4-CH15A
MBB-J5A-CH15B
 
GEN.I LOCK
15B
 
GEN.I DLS1 MBB-J4-CH13
MBB-J7A-CH6
5V
 
PRC.A DP.A
S
R
MBB-J7C-CH8
5V
 
PRC.B DP.B
S
R
 
UNIT CHWS MBB-J6-CH3
 
GEN.I DUAL MBB-J4-CH12
 
UNIT EWT MBB-J6-CH2
 
UNIT LWT MBB-J6-CH1
 
UNIT OAT MBB-J6-CH4
MBB-J5C-CH18
 
GEN.I PUMP 18
C
MBB-J5A-CH16B
 
GEN.I ELEC
16B
MBB-J7B-CH7
5V
 
PRC.A SP.A
S
R
MBB-J7D-CH9
5V
 
PR.B SP.B
S
R
 
GEN.I ONOF MBB-J4-CH11
 
GEN.O ALRM MBB-J3-CH24
 
GEN.O ALRT MBB-J3-CH25
 
GEN.O CO.HT MBB-J2B-CH21
 
CIR.A HGB.A MBB-J2C-CH22
 
CIR.B HGB.B MBB-J2C-CH23
 
GEN.O PMP.1 MBB-J2A-CH19
 
GEN.O PMP.2 MBB-J2A-CH20
 
GEN.O REDY MBB-J3-CH26
Notation
24 vac
Ground
5 vdc Ref.
Signal
Return
5 vdc Ref.
Signal
Return
5 vdc Ref.
Signal
Return
5 vdc Ref.
Signal
Return