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The term Air Conditioning refers to the cooling and dehumidification of indoor air for thermal comfort
Air conditioning equipment is designed to operate at its rated capacity and efficiency at one set of design conditions
HVAC Glossary
HVAC Acronyms
Category 5 cable includes four twisted pairs in a single cable jacket
DDC Glossary - Direct Digital Controls
DIP Switches - Dual Inline Package Switches DIP Switches - Dual Inline Package Switches
Homeowners Frequently Asked Questions
HVAC News Publications
Leak Detection While in a Vacuum This is not a recommended leak test procedure.
Links to other HVAC related websites
The TAC NETWORK 8000 MICROZONE II (MZII) is a fully programmable controller that enhances the TAC NETWORK 8000 Facility Management System
My Links to BTU – Seer Rating – Heat Pump and More
Ohm's Law
HVAC Organizations
Puron - Puron refrigerant is Carrier's registered trademark for a refrigerant blend with the generic ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers designation R-410A
The rating is not complete using system of EER so a rating of SEER has been developed. This rating is tested and verified by a rating agency, and includes the startup and shutdown cycles
Subcooling
Superheat
Transmission Control Protocol - Internet Protocol
Thermister / RTD
Temperature Pressure Chart
Leak Detection While in a Vacuum
Together with DuPont, Honeywell has developed a fluorinated gas solution called HFO-1234yf

 

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Formula for Voltage Unbalance

Percent
Voltage
Unbalance

=

100   X

Max. Voltage Deviation From Average Voltage

Average Voltage

Example = With a Voltage of     220     216       213

How to Use The Formula
Average Voltage  =  220 + 216 + 213 = 649 Divided by 3 = 216
Max. Voltage Deviation from Average Voltage = 220 Minus 216 = 4

Percent
Voltage
Unbalance

=

100   X

4

=

400

=

1.8%

216

216

Percent Voltage Unbalance Must Not Exceed 2%



 

 

 

 

 

 

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