Lennox SL280UHNV Series Unit Information page 43

Optional Accessories for use with any Communicating System
NOTE: COMMUNICATING THERMOSTAT SENSES HUMIDITY &
CONTROLS HUM CONTACTS TO CYCLE HUMIDIFIER BASED ON
DEMAND. NO OTHER CONTROL OR HUMIDISTAT REQUIRED.
OPTIONAL OUTDOOR AIR SENSOR FOR USE WITH HUMIDIFIER
(IF NOT ALREADY IN THE SYSTEM FOR OTHER FUNCTIONS.
BUILT INTO ALL COMMUNICATING OUTDOOR UNITS).
COMMUNICATING
ENABLED FURNACE
Discharge Air
Sensor (Required
for even heat)
COMMUNICATING
THERMOSTAT
RSBus
Maximum total
length of all con­
nections on the
RSBus is limited
to 1500ft.
Wire gauge of
RSBus wire is 18.
COMMUNICATING
COMMUNICATING
ENABLED FURNACE
ENABLED OUTDOOR UNIT
(POWER COMPANY INTERRUPTION SYSTEMS
ARE WIRED SAME AS OVERFLOW SWITCH)
HEPA BYPASS FILTER X2680 HEPA INTERLOCK KIT
COMMUNICATING
ENABLED FURNACE
LVCS VENTILATION CONTROL SYSTEM
COMMUNICATING
ENABLED FURNACE
NOTE: 24V UV LIGHT
APPLICATIONS
In an icomfort by Lennoxt system,
neither furnace nor air handler trans­
former will have adequate VA to
power 24V UV light applications. An
additional transformer for UV light
applications is required.
PASS INDOOR BLOWER
MOTOR COMMON WIRE
THROUGH CURRENT LOOP.
SEE HEPA INTERLOCK KIT
FOR INSTALLATION DE­
TAILS
SEE LVCS VENTILATION
INSTRUCTIONS FOR
DAMPER & SENSOR WIRING
Page 43
120V CONNECTIONS
24V HUMIDIFIER CONNECTIONS
*24V IN jumper not used in non-
communicating configuration
THERMOSTAT
DEHUMIDIFIER
CONTROL
HVAC
EQUIPMENT
STANDARD 1 OR 2
STAGE AC OR HP UNIT
2 STAGE FURNACE
DS
CUT
R-DS
W914
R
"HUM" CONTACT IS
CLOSED ANYTIME
HUMIDITY DEMAND
IS PRESENT
CS 7000
THERMOSTAT
CONVENTIONAL
NON-COMMUNI­
CATING SYSTEM
COMMUNICATING SYSTEM
*24V IN
JUMPER
COMMUNICATING
ENABLED FURNACE
NON-COMMUNICATING
SYSTEM WIRING
COMMUNICATING
SYSTEM WIRING