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Air conditioning supplies section

Perfect Climate Comfort Center® Control System and W8900
SPECIFICATIONS

W8900 Remote Modules Details

Mount near the equipment; the PC8900 heating, cooling, ventilation and dehumidification equipment and all additional sensors are wired to the W8900.

  • Provide humidity and ventilation control output.
  • Compatible with most 24 Vac systems.
  • Mount directly on the wall, near the HVAC equipment or cold air return.
  • Select models provide humidity control with fan.

APPROVALS:

  • Federal Communications Commission Class B.
  • Nation Electrical Manufacturers Association DC-3.

ELECTRICAL RATING:

  • Input:
    • 20 to 30 Vac, 50/60 Hz.
    • Heat Pump Failure Input (L terminal on W8900B Models):
      • 24 Vac load, 50/60 Hz, 0.3 VA load.
    • Carbondioxide Monitor Input (CO2 Terminal on all W8900 Models);
      • 24 Vac load, 50/60 Hz, 0.3 VA load.
  • Output:
    • Humidity Control Output Relay: 50 VA at 24 Vac.
    • Ventilation, W1, W2, Y1, Y2, E, G, O, B, Aux, Y1/W1:
      • 1.5A running, 3.5A inrush at 200,000 cycles (30 Vac).
      • 1.5A running, 7.5A inrush at 100,000 cycles (30 Vac).
    • Run: 40% power factor minimum.
    • Inrush: 50% power factor minimum.

TEMPERATURE RATINGS:

  • Operating Range: -40 F to +150 F (-40 C to +66 C).

HUMIDITY RATINGS: 5 to 90% RH, noncondensing.

DIMENSIONS, APPROXIMATE: 6-3/8 in. (163 mm) wide, 8-3/4 in. (222 mm) high, 2 in. (51 mm) deep.

MOUNTING:

  • Mounts directly on the wall, near HVAC equipment or cold air return, using the mounting screws and anchors provided.

ORDER NUMBER Application Stages
Heating Cooling
W8900A1004 Conventional 24 Vac systems. 2 2
W8900A1012 Conventional 24 Vac zoning systems, with O/B terminal. 2 1
W8900B1002 24 Vac heat pump systems. 3 2
W8900C1000 24 Vac systems with cooling humidity reheat algorithm. 2 2

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