Load & DesignCâu 19 / 110
Which condition would a technician correct by performing an accurate load calculation instead of using a rule of thumb like square footage per ton?
a.Chronic comfort complaints from an oversized or undersized system
b.A dirty condenser coil
c.A tripped float switch
d.A failed run capacitor
Giải thích
Square-foot rules of thumb ignore insulation, glazing, orientation, and infiltration, often producing oversized or undersized equipment and comfort complaints. A Manual J load accounts for these variables and yields correctly sized equipment. This is the proper professional approach.
Luyện miễn phí toàn bộ 110 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Air velocity in a duct is calculated by dividing airflow (CFM) by what?
- A branch duct must deliver 200 CFM at a velocity of about 600 feet per minute. Approximately what free area is required?
- Under California energy standards, duct leakage in many new and altered systems must be verified by which method?
- Latent load in a cooling calculation refers to the energy required to do what?
- A 3-ton system is selected for a home. At 400 CFM per ton, what is the target blower airflow?
- What is the main benefit of properly sizing equipment to a load calculation rather than oversizing?
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