Durex industries DFX 550 Manual de instalação e operação - Página 4

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L1
L1
L2
L2
1 Phase
3 Phase
DFX 250, Heater Element
L1
Line
120V or 240V
1 Phase - SPST Tstat
Line
120V, 240V, or
480V
Control Volts
120V or 240V
SPST Thermostat
1 Phase - Pilot Duty
For 120V, 240V, or 480V heaters when current
exceeds thermostat rating
Line
240V or 480V,
3 Ph
Control Volts
120V or 240V
SPST Thermostat
3 Phase - Pilot Duty
190 Detroit Street, Cary, Illinois 60013 • Phone: 847-639-5600 • Fax: 847-639-2199 • Web: www.durexindustries.com • TOLL FREE: 800-762-3468
DFX Cast Circulation Heater
Installation & Operation Manual
WIRING DIAGRAMS
L1
L2
L1
L3
1 Phase Series
DFX 350 and 375, 2 Elements
L3
L1
L2
3 Phase Delta Series
3 Phase Delta Parallel
DFX 750, 6 Elements
TYPICAL THERMOSTAT WIRING DIAGRAMS
Heating
Elements
Line
120V, 240V, or
480V, 3 Ph
3 Phase - DPST Tstat
Heating
Elements
2 Pole Contactor
Heating
Elements
2 Pole or
3 Pole Contactor
L2
L1
1 Phase Parallel
1 Phase
L3
L1
L2
3 Phase Wye Parallel
120V, 240V,
Heating
Elements
Line
120V, 240V, or
480V
Control Volts
120V or 240V
DPST Thermostat
For 120V, 240V, or 480V heaters when current
Line
240V or 480V,
3 Ph
Control Volts
120V or 240V
DPST Thermostat
L2
L3
L2
L1
3 Phase, Delta
DFX 550 and 750, 3 Elements
L3
L2
Line
or 480V
1 Phase - DPST Tstat
1 Phase - Pilot Duty
exceeds thermostat rating
3 Pole Contactor
3 Phase - Pilot Duty
CAST-DFXIM-0613
L3
L2
L1
3 Phase, Wye
Heating
Elements
Heating
Elements
2 Pole Contactor
Heating
Elements
2 Pole or
4