Lennox G32V Series Service Literature page 29

OPERATING MODE
System Thermostat
Condition Demand
Y1
Normal operation Normal operation
Y2
Y1
Y1
Call for humidity
removal during removal during
1st−stage cooling
Demand
demand
satisfied
Y1
Significant increase in Y1
humidity during humidity during
thermostat cooling
Y1
demand.
Y1
Humidity demand
Y1
satisfied during satisfied during
thermostat demand.
None
Y1
Y2
Call for humidity Call for humidity
removal during 2nd
Y2
stage thermostat
demand demand
Y2
None
*Call for 1st stage
cooling after call for cooling after call for
humidity removal.
Y1
None
Call for 2nd stage
cooling after call for cooling after call for
humidity removal
Y2
None
Call for cooling after
significant increase in significant increase in
humidity
Y1 or Y2
Humidity demand
None
satisfied between satisfied between
thermostat demands
(unit off cycle). Y1 or Y2
Note − During mode of operation change from cooling to heating, indicating lights will not change until the first thermostat heating
demand.
*IMPORTANT - If power to unit is turned on with CCB1 calling for humidity removal, outdoor unit may be locked into high speed
indefinitely. To reset, move the humidity slide switch all the way down then back up to desired setpoint while the unit is running.
** Reduced blower speed is 77% of COOL for the V3 units; 74% of COOL for V5.
***If the two−speed control on a two−speed outdoor unit is set for LATCH 2 (15 minutes) or LATCH 3 (30 minutes), the compressor
will latch into high speed after a Y1 demand has occurred for that period of time.
TABLE 28
G32V−5, CCB1 and Two−Speed Outdoor Unit
SYSTEM DEMAND
*Relative Humidity
(EfficiencyPlus Lights)
No demand. Acceptable
No demand. Acceptable
No demand. Acceptable
Humidity level rises slightly
(1) above setpoint. Demand
initiated.
Humidity level remains
slightly (1) above setpoint.
Demand continues.
Humidity level remains
slightly (1) above setpoint.
Demand continues.
No demand. Acceptable
Humidity level rises signifi-
cantly (2 or more) above
setpoint. Demand initiated.
Humidity level
above setpoint.
Humidity level falls below
setpoint. No demand.
No demand. Acceptable
No demand. Acceptable
No demand. Acceptable
Humidity level rises slightly
(1) above setpoint. Demand
initiated.
No demand. Acceptable
Humidity level is slightly (1)
above setpoint.
Humidity level is slightly (1)
above setpoint.
Humidity level is slightly (1)
above setpoint.
Humidity level is slightly (1)
above setpoint.
Humidity level is significantly
above setpoint (2 or more).
Humidity level is significantly
above setpoint (2 or more).
Humidity level is slightly (1)
above setpoint.
Humidity level falls below
setpoint. No demand.
Page 29
SYSTEM RESPONSE
****Compressor Blower CFM
Speed (COOL)
55% of
Low
HIGH COOL
High HIGH COOL
55% of
Low
HIGH COOL
55% of
Low
HIGH COOL
Off
Off
**77%/74% of
High
HIGH COOL
55% of
Low
HIGH COOL
**77%/74% of
High
HIGH COOL
**77%/74% of
High
HIGH COOL
HIGH COOL
High
Off
Off
55% of
Low
HIGH COOL
HIGH COOL
High
**77%/74% of
High
HIGH COOL
HIGH COOL
High
Off
Off
55% of
Low
HIGH COOL
Off
Off
**77%/74% of
High
HIGH COOL
Off
Off
**77%/74% of
High
HIGH COOL
Off
Off
HIGH COOL
High
Comments
Compressor demand and indoor
blower speed controlled by blower speed controlled by
thermostat demand
Dehumidification mode does not begin
until after initial thermostat demand is until after initial thermostat demand is
satisfied and new cooling demand is
initiated.
If humidity rises significantly above set-
point, or if slide switch is moved signifi- point, or if slide switch is moved signifi
cantly, unit will immediately go into de- l i ill i di l
humidification mode (in presence of
thermostat demand).
When humidity demand is satisfied, When humidity demand is satisfied,
blower immediately shifts to the COOL
CFM in order to hasten the end of the
cycle Unit can only shift out of high cycle. Unit can only shift out of high
speed compressor operation at begin speed compressor operation at begin-
ning of next cycle.
Blower immediately changes speed in
response to thermostat demand.
Dehumidification mode (high speed
compressor) begins with next thermo- compressor) begins with next thermo
stat demand after initial demand is sat-
isfied.
Reduced blower speed (dehumidifica-
tion speed) begins immediately with tion speed) begins immediately with
thermostat demand
If humidity increases significantly over
setpoint, or if slide switch is moved,
unit immediately goes into dehumidifi- unit immediately goes into dehumidifi
cation mode (in presence of thermostat
demand).
While unit is not operating (no thermo-
stat demand), slide switch is moved
down and back up Blower and com down and back up. Blower and com-
pressor operate at high speed until
next thermostat demand.
i d