Instruction Manual

Benchmark 750/1000 Boiler Installation, Operation & Maintenance Manual
Page 10 of 192 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0082_0J
05/21/2014 Ph.: 800-526-0288 GF-130
Phrases, Abbreviations and Acronyms – Continued
Phrase,
Abbreviation or
Acronym
Meaning
Terminating Resistor
A resistor placed at each end of a daisy-chain or multi-drop network in
order to prevent reflection
s that may cause invalid data in the
communication
VDC
Volts, Direct Current
VFD
Vacuum Fluorescent Display, or Variable Frequency Drive
W
Watt
W.C.
Water Column
µA Micro amp (1 million
th
of an ampere)