Lochinvar SNA285-125 Manual Do Utilizador
45
7
Field wiring
(continued)
Figure 7-4 Control Inputs/Outputs
TANK SENSOR
LOW VOLTAGE
CONNECTION
BOARD
INLET TEMPERATURE
SENSOR
OUTLET TEMPERATURE /
HIGH LIMIT SENSOR
FLUE GAS SENSOR
FLAME SENSOR
LOW WATER CUTOFF
BLOCKED DRAIN SWITCH
DISPLAY PANEL
CONTROL BOARD
BLOCKED AIR INLET PRESSURE SWITCH
LOW VOLTAGE
CONNECTION
BOARD
CONTROL BOARD
ALARM BELL (ALARM CONTACTS)
RUNTIME CONTACTS
WHR PUMP
IGNITER
BLOWER
GAS VALVE
DISPLAY PANEL
INPUTS
OUTPUTS
Installation & Service Manual
TM