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Technical Specifications Flashcards

7 cards from real ASHRAE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. A specification requires air filters rated per ASHRAE Standard 52.2. Which rating metric does that standard produce?

    Answer: MERV (Minimum Efficiency Reporting Value)

    ASHRAE 52.2 tests particle-size removal efficiency and reports the result as a MERV of 1 to 16.

  2. Under the ASHRAE 62.1 Ventilation Rate Procedure, the breathing-zone outdoor airflow (Vbz) combines which two components?

    Answer: A per-person rate (Rp) and a per-floor-area rate (Ra)

    Vbz = Rp × Pz + Ra × Az, so it accounts for both occupant-related and building-related contaminants.

  3. Which ASHRAE standard is the Safety Standard for Refrigeration Systems?

    Answer: Standard 15

    ASHRAE 15 covers the safe design, construction, installation and operation of refrigeration systems.

  4. Under ASHRAE Standard 34, what does refrigerant safety group A2L mean?

    Answer: Lower toxicity, lower flammability (mildly flammable)

    'A' means lower toxicity, and '2L' is the mildly flammable subclass with a burning velocity of 10 cm/s or less.

  5. ASHRAE Standard 55 commonly defines an acceptable thermal environment as one with a predicted percentage dissatisfied (PPD) below what value?

    Answer: 10%

    A PMV between -0.5 and +0.5 corresponds to a PPD under 10%, which is the Standard 55 comfort criterion.

  6. A controls specification calls for interoperability per ASHRAE Standard 135. What protocol is that?

    Answer: BACnet

    ASHRAE 135 defines BACnet, a data communication protocol for building automation and control networks.

  7. Which ASHRAE standard sets requirements for managing Legionellosis risk in building water systems?

    Answer: Standard 188

    ASHRAE 188 requires a water management program to reduce the risk of Legionella in building water systems.