Wiring, Model 250 low water cut-off and pump control, 250 pump terminals – Hydrolevel 250 Series User Manual
Page 2: Internal wiring
The Safgard 250 is intended as a pilot control only and must be installed with a relay
between it and both the condensate pump and burner circuit. Direct wiring of the control
to either the burner circuit or condensate pump can result in failure of the control.
I M P O R T A N T !
WIRING
MAXIMUM PRESSURE: 250 PSI
ALL WIRING SHALL
BE NEC CLASS I
OPEN CIRCUIT
VOLTAGE TO PROBE
140 VAC
LOWER
PROBE
(LWCO)
FEED
PROBE
(FEED ON)
TO FEED
PUMP CONTROL
CIRCUIT
125 VA PILOT DUTY
TO ALARM CIRCUIT
120 VA, 60 HZ, 10A
INTERNAL WIRING
BLUE
WHITE
BURNER
HOT
HOT
HOT COMMON
COMMON
COMMON
BURNER POWER
SOURCE
5.8 FLA 34.8 LRA
LIMIT
UPPER PROBE
(FEED OFF)
HOT
HOT
HOT
120 VAC 60 HZ
INCOMING
POWER
NEUTRAL
NEUTRAL
NEUTRAL
MODEL 250 Low Water Cut-Off and Pump Control
G
G
G
H
H
H
P
P
P
P
P
P
FE
FE
FE
A
A
A
V
V
V
TYPICAL PUMP STARTER WIRING. SEE RELAY MANUFACTURERS
INSTRUCTIONS FOR MORE COMPLETE INFORMATION.
LINE
V
A
250 PUMP TERMINALS
The Safgard 250 requires connection to a 120VAC power source to enable the control to operate.