King Electric GPT 3 - Manual (Page 9)

Page 9 of 21
Specifi cations
Control
Range: 41° to 77°F (5° to 25°C)
Dead band: 2°F (1°C)
Electrical
Supply: 120, 208, 240 or 277 volts auto-selected
Heater load: 30 amps maximum
Alarm relay: Isolated SPDT 1 amp Class 2 contact
Indicators
Supply (red) Power applied
Heater (yellow) Call for heat
GFEP (red) Ground fault occurring or has occurred
FAULT (red) Contactor failure
Temperature sensor failure
Power-on self-check failure
GFEP
Settings: 30 mA default, 60, 90, 120 mA selectable
Reset: Manual default, automatic selectable
Auto-test: Every 24 hours
Heater monitoring
Choices: Self-limiting default, constant wattage selectable
Alarm relay: No power
Heater failure
Contactor failure
Ground fault or GFEP circuit failure
Temperature sensor failure
Temperature limits
Operating: −40° to 136° F (−40° to 58° C)
Storage:
− 67° to 167° F (−55° to 75° C)