Glossary - Lennox iComfort S30 Installation And Setup Manual

AC - air conditioner
AHC - Air Handler Control
CEHB - Cold end header box
CFA - Comfort fault alarm
CFM - Short for cubic feet per minute, a measurement of the velocity at which
air flows into or out of a space.
Coasting - When the system experiences a step change, it is beneficial to
make a determination regarding whether to allow the system to coast to the
new set point without activating conditioning, or allow conditioning to drive the
air temperature to the new set point. This determination is made by comparing
the total error immediately prior to the set point change to magnitude of the set
point change minus a constant. To exit a coast, the system maintains a counter
that decrements when the slope is favorable to reaching the next set point and
increments when the slope is unfavorable. When the counter reaches a
predetermined limit, the coast is cancelled.
DAS - Discharge air sensor
DAT - Discharge air temperature
DC - Direct current
DCM - Damper Control Module
Deadband - Is an interval of a signal domain or band where no action occurs
(the system is dead).
Dual-Fuel - Refers to a system having the option of two fuel sources to
maximize efficiency. Dual-fuel systems optimize energy use by selecting the
best source of fuel, like Lennox systems that combine an electric heat pump
with a high-efficiency gas or oil furnace.
EIM - Equipment Interface module
HEPA - is an acronym for "High Efficiency Particulate Air" or "High Efficiency
Particulate Arrestance." This acronym refers to a filter that is manufactured,
tested, certified, and labeled in accordance with current HEPA filter standards.
HP - Heat pump
IFC - Integrated Furnace Control
A
LED - light-emitting diode (LED) is a two-lead semiconductor light source.
It is a pn-junction diode, which emits light when activated. When a suitable
voltage is applied to the leads, electrons are able to recombine with electron
holes within the device, releasing energy in the form of photons.
LVCS - Lennox Ventilation Control System

GLOSSARY

Mag-Mount - A wall base that has inter-connects between the HD Display and
the Smart Hub.
MAX - Maximum
Modulating - The process of varying one or more properties of a
high-frequency periodic waveform.
OAS - Outdoor air sensor
PCB - Printed circuit board
Perfect Temp - see SSA.
PFC - In electrical engineering, the power factor of an AC electrical power
system is defined as the ratio of the real power flowing to the load, to the
apparent power in the circuit and is a dimensionless number in the closed
interval of -1 to 1.
PureAir - A system uses exclusive UVA-light technology to attack all three
classes of indoor air contaminants–particles, mold/mildew/bacteria and
odors/chemical vapors. It not only reduces, but also destroys ozone, a known
lung irritant.
RPM - Number of times the shaft of a motor, rotates in one minute. RPM is a
function of the design of the equipment and the power supply.
RSBus - Residential Serial Bus is the means for transmitting data within the
communicating system.
Set point - It is the temperature the control system aims to maintain.
Smart Away - This algorithm utilizes mobile device geo-fencing, local sensors,
and other optional parameters to determine if the home is occupied in real time
for the purpose of temperature set point setback.
Smart Hub - System and network controller
SSA - Single set point (Perfect Temp). When in one set point mode, the set
point used must be a valid set point for both heating and cooling modes. For
example, if the allowed cooling set point range is 60°F to 90°F, and the allowed
heating set point range is 65°F to 95°F, then the set point range for use in single
set point operation is 65°F to 90°F. If the set point is outside this range when
entering the once set point mode, then the nearest valid set point is used
SSID - Is a case sensitive, 32 alphanumeric character unique identifier
attached to the header of packets sent over a wireless local-area network
(WLAN) that acts as a password when a mobile device tries to connect to the
basic service set (BSS) -- a component of the IEEE 802.11 WLAN architecture.
TEMP - Temperature
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