51
EQM Control Model
Electrical Schematic
Note: 1) 120VAC Power Source supplied by end customer.
2) Heater must be interlocked through fan starter by connecting to EQM board as shown in schematic. It is the
responsibility of the end customer to provide the interlocks.
Failure to interlock heater through fan starter may lead to damage to heater in event of a
fan shutdown and will void warranty.
2) Circuit Protection is provided by the Fan Starter. This Control Panel is the control portion within and existing
Branch Circuit.
3) Ensure Heater Housing is Properly Grounded to Heater Control Panel.
4) If using a Vacon VFD see
page 54
for instructions on interlocking heater to VFD.
FENWAL AUTOMATIC
IGNITION CONTROL KEY
NC
ALARM
V1
VALVE POWER
L2
NEUTRAL
V2
VALVE NEUTRAL
L1
120VAC
B.GND
BURNER GND
S1
REM. FLAME SENSOR
FC+, FC-
FLAME SENSE
TEST POINT 2-PIN HEADER
LED INDICATOR
ON
CONTROL FAULT
2
FLASHES
2 FLASHES =
FLAME, NO CALL FOR HEAT
3
FLASHES
3 FLASHES = IGNITION LOCKOUT
