Refrigeration & Air Conditioning Mechanic Red Seal · Question
A large commercial kitchen requires a high volume of exhaust air to remove heat, grease, and odours. To maintain proper building pressurization and prevent negative pressure issues, what essential component must be properly integrated into the ventilation system alongside the exhaust fan?
A makeup air unit (MAU) is critical in environments with high exhaust rates like commercial kitchens. It introduces tempered outdoor air to replace the exhauste
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Question: A large commercial kitchen requires a high volume of exhaust air to remove heat, grease, and odours. To maintain proper building pressurization and prevent negative pressure issues, what essential component must be properly integrated into the ventilation system alongside the exhaust fan?
Answer options:
- A dedicated heat recovery ventilator (HRV)
- A variable refrigerant flow (VRF) system ✅ A makeup air unit (MAU)
- A zone-controlled bypass damper
Correct answer: A makeup air unit (MAU)
Explanation: A makeup air unit (MAU) is critical in environments with high exhaust rates like commercial kitchens. It introduces tempered outdoor air to replace the exhausted air, preventing negative building pressure, which can cause issues like drafts, difficulty opening doors, and back-drafting of combustion appliances.
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Question explanations
- Which of the following refrigerants is a hydrofluorocarbon (HFC) and has a high ozone depletion potential (ODP
- Which component is responsible for compressing the refrigerant vapour to a high pressure and temperature?
- According to the Canadian Electrical Code (CEC), what is the minimum required working clearance in front of el
- What is the main operating characteristic difference between a fixed orifice (capillary tube) and a Thermostat
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