New Hampshire residential appliance installer license prep class for ios instal

Topics on the environmental air exams include basic refrigeration components, boilers, business and law, combustion air, controls, design and responsibility, equipment requirements, heat loads, HVAC systems, piping, pressure relief protection, refrigeration principles, service, testing, ventilation, venting, air properties, air distribution, and exhaust. Topics on the commercial refrigeration exams include absorption systems, basic refrigeration components, boilers, business and law, combustion air, controls, design and responsibility, equipment requirements, heat loads, HVAC systems, piping, pressure relief protection, refrigeration principles, service, testing, ventilation, and venting. A minimum of 2,000 working hours of on-the-job experience in the trade or its equivalent in an approved educational setting as defined in Saf-Mec 303.18, relevant to the installation of gas piping, installation of fuel gas utilization equipment, and the servicing of fuel gas equipment within 60 consecutive months, 750 hours of which may be. After you have been approved to schedule your exam, contact PSI at 1-80Ĭlass A examinations have 120 question while Class B exams have 100 questions.Ĭlass A examinations have 240 min time limit while Class B exams have 180 min time limit User note: About this chapter: Chapter 3 covers general regulations for plumbing installations.

Pre-approval is required to sit for the examination.

New Hampshire residential appliance installer license prep class for ios instal