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Wiring, Model 250 low water cut-off and pump control, 250 pump terminals – Hydrolevel 250 Series User Manual

Page 2: Internal wiring

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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 MANUFACTURER’S

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.