Ladder Diagram - Navien NCB-190/060H Installation & Operation Manual

12.3 Ladder Diagram

APS
Exhaust
Thermistor 1
Heating Supply
Thermistor
System Supply
Thermistor
Outdoor
Thermistor
Linear
Trans
AC 24V
OUTLET
Thermistor
O O
N N
1 2 3 4 5 6 1 2 3 4 5 6
Dip Switch
Zone2 Thermostat
External R/C Thermostat
Mixing Valve 1
Flow Sensor
3-Way
Valve
Relay 11
Relay 12
Relay 13
132 Appendixes
AC INPUT(AC 120V)
LIVE NEUTRAL
EMI
FILTER
PWM
Primary Primary
SMPS
Secondary
DC5V
WPS
Fan
Hall Sensor
OUTLET2
Thermistor
Heating Return
Thermistor
System Return
Thermistor
MCU 1
INLET
Thermistor
LWCO
7 8
R,W,C
Zone1 Thermostat
R,W,C
Zone3 Thermostat R,W,C
R,W,C
Mixing Valve 2
AWS Valve
Vent Installation Detector
Zone Valve 1
Zone Valve 2
Zone Valve 3
Dual Venturi
Relay 6
Relay 7
Ignitor
Relay 8
3-Way Valve
Speed Control
Fan
DC15V
DC24V
DC12V
H.T.L 1
WD-PSS
H.T.L 2
Communication
Interface
UART
Communication
Interface
CASCADE
(RS-485)
Air Handler
DHW Priority
AC INPUT(AC 120 V)
LIVE NEUTRAL
Terminal Board
Relay 1
Recirculation Pump
Relay 2
10A
Boiler Pump
Relay 3
10A
ZONE1 Pump
Relay 4
10A
ZONE2 Pump
Relay 5
10A
ZONE3 Pump
Flame Rod
MGV1
MGV2
Relay 1
Relay 2
Relay 3
Relay 4
Relay 5
Relay 6
Relay 7
Relay 8
Relay 9
Relay 10
Front Panel
Terminal Board
Relay 9
Output
Relay 10
Output
MCU 2