Control Inputs - Lochinvar SMART SYSTEM 402 - 2072 Service Manual

1
Service

Control inputs

OUTDOOR SENSOR
(OPTIONAL)
SYSTEM SUPPLY/
ENABLE SENSOR
(OPTIONAL)
SYSTEM RETURN/
POOL SENSOR
(OPTIONAL ON BOILER)
(STD ON POOL HEATER)
SYSTEM PUMP SPEED
(OPTIONAL)
CASCADE
DHW THERMOSTAT
(OPTIONAL)
ROOM THERMOSTAT/
ZONE CONTROL
(OPTIONAL)
SEQUENCER BUILDING
MANAGEMENT SYSTEM
(FIELD PROVIDED)
LOUVER PROVING SWITCH
(FIELD PROVIDED)
TANK SENSOR
(OPTIONAL)
MODBUS
INLET TEMPERATURE
SENSOR
OUTLET TEMPERATURE/
LIMIT SENSOR
LOW WATER CUTOFF
(OPTIONAL)
GAS PRESSURE SWITCH
(OPTIONAL)
MANUAL RESET HIGH
LIMIT (OPTIONAL)
AIR PRESSURE SWITCH
FLOW SWITCH
DISPLAY PANEL
PC INTERFACE
(OPTIONAL)
6
Copper-fin II/IIE Boiler, Water Heater and Pool
MODBUS
BOARD
(OPTIONAL)
LOW
VOLTAGE
CONNECTION
BOARD
Service Manual
SENSOR
CONNECTION
BOARD
(BOILER AND
POOL HEATER
ONLY)
SMART
SYSTEM
CONTROL
BOARD