Watts Benchmark Aerco OMM-0122 - Page 7

Benchmark 750-3000 Boiler Installation & Startup Manual
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OMM-0121_D • GF-205 • 5/9/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 7 of 122
AERCO Technical Terminology Meanings
TERMINOLOGY MEANING
HDR Header
Hex
Hexadecimal Number (0 – 9, A – F)
HP
Horse Power
HX
Heat Exchanger
Hz
Hertz (Cycles Per Second)
I.D. Inside Diameter
IGN Ignition
IGST Board Ignition/Stepper Board, contained in C-More Controller
INTLK (INTL’K) Interlock
I/O Input/Output
I/O Box
Input/Output (I/O) Box currently used on Benchmark, Innovation and
KC1000 Series products
IP
Internet Protocol
ISO
International Organization for Standardization
Lbs.
Pounds (1 lb = 0.45 kg)
LED Light Emitting Diode
LN Low Nitrogen Oxide
MA (mA) Milliampere (1 thousand
th
of an ampere)
MAX (Max) Maximum
MBH
1000 BTUs per Hour
MIN (Min) Minimum
Modbus®
A serial, half-
duplex data transmission protocol developed by AEG
Modicon
NC (N.C.) Normally Closed
NO (N.O.) Normally Open
NO
x
Nitrogen Oxide
NPT National Pipe Thread
O
2
Oxygen
O.D. Outside Diameter
OMM & O&M Operation and Maintenance Manual
onAER
AERCO’s on-line remote monitoring system
PCB Printed Circuit Board
PMC Board
Primary Micro-Controller (PMC) board, contained in the C-More
Controller
P/N Part Number
POC
Proof of Closure
PPM Parts per Million
PSI Pounds per Square Inch (1 PSI = 6.89 kPa)