Infinity REU-V3232W / HD250E REU-V3232WC - v - Issue 1 - 8/09/03 ©Rinnai
Glossary of Terms and Symbols
dB(A) - sound pressure level in decibels, “A” range
DC - direct current
AC - alternating current
WFCD - water flow control device
FB - feedback information
FF - feedforward information
Hz - Hertz
IC - integrated circuit
kcal/h - kilocalorie per hour
kPa - kilopascals
LED - light emitting diode
L/min - Litres per minute
mA - milliamps
MJ/h - megajoule per hour
mm - millimetres
mmH
2
O - millimetres of water (gauge pressure)
OHS - overheat switch
PCB - printed circuit board
CPU - central processing unit
POT - potentiometer
rpm - revolutions per minute
SV - solenoid valve
ø - diameter
o
C - temperature rise above ambient
POV - modulating valve
TE - thermal efficiency
TH - thermistor
T
IN
- temperature of incoming water
T
OUT
- temperature of outgoing water
∆
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