Aerco Benchmark BMK 750 User Manual page 8

Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA
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AERCO Technical Terminology Meanings
TERMINOLOGY
P&T
ProtoNode
PVC
PWM
REF (Ref)
RES.
RS232
(or EIA-232)
RS422
(or EIA-422)
RS485
(or EIA-485)
RTN (Rtn)
SETPT (Setpt)
SHLD (Shld)
SPDT
SSOV
TEMP (Temp)
Terminating Resistor
Tip-N-Tell
UL
VAC
VDC
VFD
W
W.C.
µA
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Pressure and Temperature
Hardware interface between BAS and a boiler or water heater
Poly Vinyl Chloride, a common synthetic plastic
Pulse Width Modulation
Reference
Resistive
A standard for serial, full-duplex (FDX) transmission of data based
on the RS232 Standard
A standard for serial, full-duplex (FDX) transmission of data based
on the RS422 Standard
A standard for serial, half-duplex (HDX) transmission of data based
on the RS485 Standard
Return
Setpoint Temperature
Shield
Single Pole Double Throw, a type of switch
Safety Shut Off Valve
Temperature
A resistor placed at each end of a daisy-chain or multi-drop network
in order to prevent reflections that may cause invalid data in the
communication
A device that indicates if a package was tipped during shipping
A business that tests and validates products
Volts, Alternating Current
Volts, Direct Current
Vacuum Fluorescent Display, also Variable Frequency Drive
Watt
Water Column, a unit of pressure (1 inch W.C. = 249 Pa)
th
Micro amp (1 million
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Ph.: 800-526-0288
MEANING
of an ampere)
OMM-0128_0C
GF-206-K