Lochinvar SMART SYSTEM 502 - 2072 - Manual (Page 7)

7
SMART
SYSTEM
CONTROL
BOARD
LOW
VOLTAGE
CONNECTION
BOARD
THREE WAY VALVE
(OPTIONAL ON BOILER)
(STD ON POOL HEATER)
LOUVER RELAY
BUILDING
MANAGEMENT
SYSTEM
RUN TIME CONTACTS
ALARM CONTACTS
ALARM
(OPTIONAL)
HEATER PUMP
(BOILER ONLY)
SYSTEM PUMP
RELAY
DHW PUMP RELAY
(BOILER)
DHW PUMP
(WATER HEATER)
HOT SURFACE
IGNITER
BLOWER
GAS VALVES
DISPLAY PANEL
PC INTERFACE
(OPTIONAL)
CASCADE
INDICATES CONNECTIONS MADE TO THE LINE VOLTAGE TERMINAL STRIP LOCATED IN THE CONTROL PANEL AREA
MODBUS
BOARD
(OPTIONAL)
0-10V
POWER
MODBUS
Control outputs
1
Service
(continued)
Copper-fin II/IIE Boiler, Water Heater and Pool Service Manual