Lochinvar SMART SYSTEM 502 - 2072 - Manual (Page 6)

1
Service
6
SMART
SYSTEM
CONTROL
BOARD
LOW
VOLTAGE
CONNECTION
BOARD
DHW THERMOSTAT
(OPTIONAL)
ROOM THERMOSTAT/
ZONE CONTROL
(OPTIONAL)
SYSTEM SUPPLY/
ENABLE SENSOR
(OPTIONAL)
SYSTEM RETURN/
POOL SENSOR
(OPTIONAL ON BOILER)
(STD ON POOL HEATER)
SEQUENCER BUILDING
MANAGEMENT SYSTEM
(FIELD PROVIDED)
OUTDOOR SENSOR
(OPTIONAL)
LOUVER PROVING SWITCH
(FIELD PROVIDED)
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)
TANK SENSOR
(OPTIONAL)
SYSTEM PUMP SPEED
(OPTIONAL)
CASCADE
MODBUS
BOARD
(OPTIONAL)
SENSOR
CONNECTION
BOARD
(BOILER AND
POOL HEATER
ONLY)
MODBUS
Control inputs
Copper-fin II/IIE Boiler, Water Heater and Pool Service Manual