Control Outputs - Lochinvar 402 - 2072 Service Manual

1
Service
(continued)

Control outputs

MODBUS
BOARD
(OPTIONAL)
SMART
SYSTEM
CONTROL
BOARD
INDICATES CONNECTIONS MADE TO THE LINE VOLTAGE TERMINAL STRIP LOCATED IN THE CONTROL PANEL AREA
Copper-fin II/IIE Boiler and Water Heater
LOW
VOLTAGE
CONNECTION
BOARD
Service Manual
MODBUS
0-10V
FIRING RATE
CASCADE
THREE WAY VALVE
(OPTIONAL ON BOILER)
LOUVER RELAY
BUILDING
MANAGEMENT
SYSTEM
RUN TIME CONTACTS
ALARM CONTACTS
ALARM
(OPTIONAL)
UNIT PUMP
SYSTEM PUMP
RELAY
DHW PUMP RELAY
(BOILER)
HOT SURFACE
IGNITER
BLOWER
GAS VALVES
DISPLAY PANEL
PC INTERFACE
(OPTIONAL)
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