Fabrication, Installation, and Startup

Questions

California Title 24 requires new duct systems and replacement systems to pass a …
After installing a new refrigerant system, a vacuum must be pulled to remove moi…
When brazing refrigerant lines, nitrogen should be flowed through the tubing to …
SMACNA standards govern the fabrication of which HVAC components?
The refrigerant line set for a split system should be insulated to prevent:
Return air ducts in a residential HVAC system should be sized to maintain a maxi…
The electrical supply for a 240V split system air conditioner must be a dedicate…
The minimum slope required for a condensate drain line is:
When installing a gas furnace, the flue vent pipe must slope toward the furnace …
A heat pump reversing valve is energized in which mode on most residential syste…
The suction line of a split air conditioning system should be sized to:
The California Mechanical Code requires that flexible duct connectors used to co…
A furnace heat exchanger must be inspected before startup to check for:
An HVAC system installed in California must comply with which code for mechanica…
What is the purpose of a filter dryer in a refrigerant circuit?
What is the minimum clearance required between a condensing unit and a solid fen…
California requires HVAC installations to be inspected and permitted. Who is res…
What refrigerant is required for new residential air conditioning equipment as o…
The electrical disconnect for an HVAC unit must be located within sight of the e…
Zoning systems in residential HVAC use which primary control mechanism?
A packaged water source heat pump eliminates which component compared to a split…
When installing a split system, the lineset should be run with the suction line:
Which type of duct joint sealant is approved for use on HVAC duct systems per Ca…
What gauge sheet metal is typically used for low-pressure residential duct syste…
When installing ductwork in an unconditioned attic, California Title 24 requires…
A refrigerant system must be pressure tested before charging with refrigerant. W…
During startup of a new air conditioning system, a technician measures subcoolin…
What is the correct sequence for commissioning a newly installed split system ai…
What is the purpose of a TXV (thermostatic expansion valve) in a refrigeration s…
According to Cal/OSHA, roof work requires fall protection when working at height…
When installing a gas furnace, the supply air temperature rise must be within th…
What is the function of a scroll compressor compared to a reciprocating compress…
What is the purpose of a condensate trap on a forced-air cooling system?