NADCA Air Systems Cleaning Specialist ASCS Dumps in PDF

Free NADCA ASCS Real Questions (page: 2)

Dirt streaks around supply diffusers that are NOT caused by a dirty ventilation system are MOST likely caused by:

  1. Slow discharge velocities.
  2. elevated relative humidity.
  3. dirty room air at the diffuser.
  4. thermal stratification around the diffuser.

Answer(s): D



According to ACR, The NADCA Standard, which of the following is the PRIMARY purpose of a written work plan?

  1. Minimizes potential for legal action against the contractor
  2. Allows a clear understanding of what work will be performed
  3. Ensures compliance with current Occupational Safety and Health Administration (OSHA) regulations
  4. Documents the complete list of materials to be used on the job site

Answer(s): B



A package unit contains which of the following components?

  1. Compressor, evaporator coil, condenser, supply fan, and filter
  2. Evaporator coil, VAV box, condenser, supply fan, exhaust fan, and filter
  3. Compressor, hat water coil, condenser, supply fan, exhaust fan, and filter
  4. Compressor, evaporator coil, condenser, supply fan, thermostat, and filter

Answer(s): A



The MOST common types of fuel consumed in modern residential HVAC systems are:

  1. natural gas, propane, and oil
  2. electric, propane, and oil
  3. natural gas, methane, and oil
  4. natural gas, propane, and ethanol

Answer(s): D



What type of supply fan transfers large volumes of air with a minimal wheel diameter?

  1. Backward-inclined fan
  2. Forward-curved fan
  3. Axial fan
  4. Radial fan

Answer(s): B



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