284

Product Image - 284
Product Image - 284
Product Image - 284
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Part of the Boiler Staging Controls Series

Ordering Code: 284

UPC: 779655028409

Boiler Control, Four tN4, BAS, Four Boiler, DHW and Setpoint

 

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The Boiler Control 284 is designed to operate up to four boilers to accurately maintain a target water temperature. The 284 operates both condensing and non-condensing boilers that are either modulating, single stage or two stage to provide a flexible, cost effective mixed boiler plant solution with better system performance. The target water temperature is based on outdoor temperature reset or a fixed setpoint for space or process heating applications. Additional loads supplied by the 284 include domestic hot water & fixed setpoint heating. Boiler equal run-time rotation, stand-by primary pump operation & pump exercising all increase boiler plant reliability. The 284 communicates with a Building Automation System (BAS) using BACnet (R) or Modbus (R) for remote monitoring & adjustment capability. tekmarNet (R) Thermostats or a tN4 Gateway 485 can be added to optimize system performance and provide remote monitoring capability.

Features

  • Outdoor temperature reset, programmable schedules
  • tekmarNet (R) 4 compatible, control up to four boilers
  • Condensing and non-condensing boiler groups, modulating, single stage or two stage
  • BACnet (R) or Modbus (R) communication, primary pump sequencing
  • DHW priority
  • Setpoint operation
  • Combustion air damper control
  • Energy, flow and pressure monitoring
  • Boiler Isolation Valves
Specifications
Agency Approvals CSA C US, meets class B: ICES & FCC Part 15, BTL Listed
Ambient Conditions Indoor use only, 32 to 122 degrees F (0 to 50 degrees C), less than 90 percent RH Non-condensing
Calls 24 V (ac) or Short
Control Type Microprocessor control, this is not a safety (limit) control
Dimensions 8 1/16 IN H x 11 1/8 IN W x 2 15/16 IN D (204 x 282 x 74 MM)
Enclosure Material Blue PC+ABS plastic with metal top & bottom conduit connection walls
Enclosure NEMA Rating NEMA 1
Hydronic - HVAC Control Type Boiler Control
Modulating Output 4 x 0-10 V (dc) 500 ohms minimum load impedance / 4-20 mA 1 k ohms max load impedance
Power Supply 115 V (ac) plus / minus 10 percent, 60 Hz, 18 VA
Pump Relay 230 V (ac) 5 A, 1/3 hp
Relay Boiler pump,Valve, IDHW pump 230 V (ac) 5 A, 1/3 hp, primary pump 230 V (ac) 10 A, 1/2 hp, Alert relay 230 V (ac) 5 A, 1/6 hp
Sensor NTC thermistor, 10 k ohms at 77 degrees F (25 degrees C plus / minus 0.2 degrees C) Beta=3892

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