Lennox EDA - Humiditrol Installation And Checkout Flow Chart

17
2.3. Humiditrol Installation and Checkout Flow Chart
FollowingtheproceduresreferenceinthissectionwheninstallingtheHumiditrol
andassociatedcomponents.
Table 5. Required Parts for Specic Applications
Required Parts Application
NOTE: After conrming that all required parts per this table are available, proceed with installation.
Any non-zoning
AC or Single
Stage HP
Non-Zoning
Two Stage HP
AC or HP and
Harmony III Zoning
Humiditrol Unit with check/ow
restrictor and label
Yes Yes Yes
Thermostats: ComfortSense
®
7500,
iComfort
®
E30, M30 and S30 Smart
Thermostat
All All
CS7500orM30(see
note)
Outdoor Sensor (X2658, for non-
communicating out door units)
Yes Yes Yes
Insulation and Piping Kit Yes Yes Yes
75VA Transformer (12P61) — Yes Yes(iftwo-stageHP)
Humiditrol Zoning Accessory
(39W67)
— — Yes
NOTE: We recommend that for an all full communicating systems that the iHarmony
®
zoning system
is used.
NOTE - Lennox communicating systems support iHarmony zoning sytem only. Cannot use Harmony III in
total communicating system.
MAKE WIRING CONNECTIONS
INSTALL “EDA” LABEL ON
OUTDOOR UNIT
POWER UP THE INDOOR UNIT
SEMBLY IS SET TO “COOLING”
POSITION
ENABLE HUMIDITROL ON ROOM
THERMOSTAT
SET THERMOSTAT FOR
MAXIMUM COOLING
OPEN REFRIGERANT VALVES
TURN OUTDOOR UNIT MAIN
POWER ON
CHECK CHARGE AND CHARGE
AS NEEDED
Installation Process
YES
NO
ENSURE ALL POWER IS OFF
INSTALL EDA UNIT IN DUCT
SYSTEM
INSTALL THE
PENSATOR (IF REQUIRED) IN
CONVENIENT LOCATION
MAKE ALL REFRIGERATION
CONNECTIONS, BEING SURE
TO INSTALL THE CHECK/FLOW
RESTRICTOR
LEAK CHECK THE SYSTEM
WITH 3-WAY VALVE assembly
SET TO “EVACUATE”
INSULATE ALL REFRIGERANT
LINES
EVACUATE THE SYSTEM AS
DESCRIBED IN THE OUTDOOR
UNIT INSTALLATION
INSTRUCTIONS
INSTALL OUTDOOR SENSOR
IS
THE
OUTDOOR
TEMPERAT URE
BELOW
95ºF
?
SET COOLING SETPOINT ON ROOM THERMOSTAT
TO 2 DEGREES ABOVE INDOOR TEMPERATURE
(OUTDOOR UNIT WILL TURN OFF)
NOTE - A Humiditrol
®
EDA-equipped system is allowed
to operate and cool room temperature below cooling set
point when trying to satisfy a persisting humidity set
point.
DEHUMIDIFICAT ION
IS DE-ACTIVATED;
CHECK FOR
CORRECT
OPERATION AT A
TIME WHEN
AMBIENT
TEMPERATURE IS
BELOW 95ºF.
OUTDOOR UNIT:
COMPRESSOR IN HIGH STAGE;
FAN IN LOWEST SPEED;
EDA:
3-WAY VALVE ASSEMBLY TO “DEHUMIDIFICATION”
POSITION
INDOOR UNIT:
FAN IN DEHUMIDIFICATION SPEED
CHECK THE TEMPERATURE DIFFERENCE
ACROSS THE EDA COIL AND THE LIQUID LINE
TEMPERATURES
Check Dehumidification Operation
SET DEHUMIDIFICATION SETPOINT TO 5% BELOW
CURRENT ROOM RELATIVE HUMIDITY
Figure 16. Humiditrol Installation and Checkout Flow Chart