InstallationCâu 24 / 110
When two combustion-air openings are used for an appliance in a confined space communicating with outdoors, they are generally located how?
a.Both near the floor
b.Both in the ceiling
c.One opening near the top and one near the bottom of the space
d.One in an interior wall only
Giải thích
Two openings, one high and one low, allow both makeup combustion air and ventilation of heat. The high opening relieves warm air while the low opening supplies denser cooler air. The CMC sizes each opening based on appliance input and whether air comes from indoors or outdoors.
Trích dẫn luật: 2022 California Mechanical Code (CMC)Luyện miễn phí toàn bộ 110 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- What is the primary purpose of providing combustion air to a gas-fired furnace?
- Type B gas vent is designed to vent the products of combustion from which appliances?
- A high-efficiency condensing furnace (Category IV) is typically vented with what material?
- Why must condensate from a condensing furnace or cooling coil be routed to an approved drain?
- A secondary condensate drain pan or float switch is typically required when an air handler is installed where?
- When brazing refrigerant copper line sets, dry nitrogen is flowed through the tubing to accomplish what?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với California CSLB C-20 Warm-Air HVAC Trade Exam · Quy trình kiểm tra