Load & DesignPregunta 21 de 110
A 3-ton system is selected for a home. At 400 CFM per ton, what is the target blower airflow?
a.800 CFM
b.1,000 CFM
c.1,200 CFM
d.1,500 CFM
Explicación
3 tons x 400 CFM per ton = 1,200 CFM. The blower and duct system should be configured to deliver this airflow at the system's external static pressure. Verifying actual airflow after installation confirms proper capacity.
Practica las 110 preguntas gratis — sin registro.
Preguntas relacionadas de este tema
- 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?
- Which condition would a technician correct by performing an accurate load calculation instead of using a rule of thumb like square footage per ton?
- Latent load in a cooling calculation refers to the energy required to do what?
- What is the main benefit of properly sizing equipment to a load calculation rather than oversizing?
Última revisión: · proceso editorial
Equipo Editorial de PrepPass · Verificado con California CSLB C-20 Warm-Air HVAC Trade Exam · Cómo revisamos