279

Part of the 279 Series

Ordering Code: 279

UPC: 779655027907

Steam Control, One Stage

 

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  • Large LCD display
  • 24 hour, 5-1-1, 7 day schedule
  • Indoor temperature feedback (with optional indoor sensor), manual override
  • CSA approved for use in USA and Canada
  • Two alert level relays
  • Outdoor temperature reset, warm weather shut down
  • Two or four schedule events per day
  • Built-in programmable timer
  • DHW tankless coil operation
Specifications
Agency Approvals CSA C US, meets Class B: ICES & FCC Part 15
Ambient Conditions Indoor use only, 32 to 122 degrees F (0 to 50 degrees C), RH less than or equal to 90 percent Non-condensing, Altitude less than 6560 ft. (2000 m), Installation Category II, Pollution Degree 2
Control Type Microprocessor control, this is not a safety (limit) control
Dimensions 6-5/8" H x 7-9/16" W x 2-13/16" D (170 x 193 x 72 mm)
Enclosure Material Blue PVC plastic
Enclosure NEMA Rating NEMA 1
Hydronic - HVAC Control Type Steam Control
Power Supply 115 V (ac) plus / minus 10 percent, 50/60 Hz, 3.5 VA
Relay 230 V (ac) 5 A, 1/3 hp, pilot duty 240 VA
Sensor NTC thermistor, 10 k ohms at 77 degrees F (25 degrees C plus / minus 0.2 degrees C) Beta=3892