You're viewing our online Q&As related to Commercial HVACR. Other technical categories include Residential HVACR and General HVACR. You can also browse our complete list of technical Q&As, and ask a question of your own.

Q&As Related to Commercial HVACR

CT Formula a N Mystery
Calculating cavity temperature (CT) values. Read it.

Using the N-5 AE Speedsheet
Solving a frequent issue with the ACCA Manual N speedsheet. Read it.

Using Manual N Abridged Edition
ACCA's Manual N 5th edition includes an "abridged edition" procedure that can only be used under certain circumstances. Read it.

Fresh air make up
Installation requirements for fresh air dampers on commercial buildings are a local issue. Read it.

CFM Levels and Installations
Applying correct level of CFM's when installing equipment. Read it.

TXVs for Different Systems
Low- and medium-temperature systems have different TXV requirements from A/C and heat pump applications. Read it.

Crankcase Pressure Regulators
In the HVAC business, CPR doesn't mean cardio-pulmonary resuscitation. Read it.

Evaporator Pressure Regulators
EPRs are particularly valuable in refrigeration and in multiple-evaporator systems. Read it.

Refrigerant Leaks
Refrigerant leaks must be fixed, but EPA rules allow some time to come up with a solution. Read it.

Using a Sight Glass to Check Charging
Sight glasses on TXV-equipment are useful, but there are other things the technician must do to ensure proper charging. Read it.

Customer-Installed Systems
EPA rules allow customers to buy and install HVAC equipment themselves. Read it.

You're viewing our online Q&As related to Commercial HVACR. Other technical categories include Residential HVACR and General HVACR. You can also browse our complete list of technical Q&As, and ask a question of your own.