Lennox G32V3-75 - Page 30

Page 30
TABLE 16
OPERATING SEQUENCE
G32V, CCB1 and Two-Speed Outdoor Unit
OPERATING MODE SYSTEM DEMAND SYSTEM RESPONSE
System
Condition
Thermostat
Demand
*Relative Humidity
(EfficiencyPlus Lights)
****Compressor
Speed
Blower CFM
(COOL)
Comments
Normal operation
Y1 No demand. Acceptable Low
55% of
HIGH COOL
Compressor demand and indoor
blower s
p
eed controlled b
y
Normal
operation
Y2 No demand. Acceptable High HIGH COOL
blower
speed
controlled
by
thermostat demand
Y1 No demand. Acceptable Low
55% of
HIGH COOL
Call for humidity
removal during
Y1
Humidity level rises slightly
(1) above setpoint. Demand
initiated.
Low
55% of
HIGH COOL
Dehumidification mode does not begin
until after initial thermostat demand is
removal
during
1st-stage cooling
demand
Demand
satisfied
Humidity level remains slightĆ
ly (1) above setpoint. DeĆ
mand continues.
Off
Off
until
after
initial
thermostat
demand
is
satisfied and new cooling demand is iniĆ
tiated.
Y1
Humidity level remains slightĆ
ly (1) above setpoint. DeĆ
mand continues.
High
**77%/74% of
HIGH COOL
Significant increase in
humidity during
Y1
No demand. Acceptable
Low
55% of
HIGH COOL
If humidity rises significantly above setĆ
point, or if slide switch is moved signifiĆ
tl it ill i di t l i t d
h
um
idit
y
d
ur
i
ng
thermostat cooling
demand.
Y1
Humidity level rises signifiĆ
cantly (2 or more) above setĆ
point. Demand initiated.
High
**77%/74% of
HIGH COOL
point,
or
if
slide
switch
is
moved
signifi
cantly, unit will immediately go into deĆ
humidification mode (in presence of
thermostat demand).
Y1
Humidity level
above setpoint.
High
**77%/74% of
HIGH COOL
When humidity demand is satisfied,
Humidity demand satĆ
isfied durin
g
Y1
Humidity level falls below
setpoint. No demand.
High
HIGH COOL
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
isfied
during
thermostat demand.
None
No demand. Acceptable
Off
Off
cycle. Unit can only shift out of high
speed compressor operation at beginĆ
Y1
No demand. Acceptable
Low
55% of
HIGH COOL
speed
compressor
operation
at
begin
ning of next cycle.
Call for humidity
Y2
No demand. Acceptable
High
HIGH COOL
Call for humidity
removal during 2nd
stage thermostat
demand
Y2
Humidity level rises slightly
(1) above setpoint. Demand
initiated.
High
**77%/74% of
HIGH COOL
Blower immediately changes speed in
response to thermostat demand.
d
eman
d
Y2
No demand. Acceptable
High
HIGH COOL
*Call for 1st stage
cooling after call for
None
Humidity level is slightly (1)
above setpoint.
Off
Off
Dehumidification mode (high speed
compressor) begins with next thermoĆ
cooling a
f
ter call
f
or
humidity removal.
Y1
Humidity level is slightly (1)
above setpoint.
Low
55% of
HIGH COOL
compressor)
begins
with
next
thermo
stat demand after initial demand is satĆ
isfied.
Call for 2nd stage
cooling after call for
None
Humidity level is slightly (1)
above setpoint.
Off
Off
Reduced blower speed (dehumidificaĆ
tion speed) begins immediately with
cooling a
f
ter call
f
or
humidity removal
Y2
Humidity level is slightly (1)
above setpoint.
High
**77%/74% of
HIGH COOL
tion speed
)
begins immediately with
thermostat demand
Call for cooling after
significant increase in
None
Humidity level is significantly
above setpoint (2 or more).
Off
Off
If humidity increases significantly over
setpoint, or if slide switch is moved, unit
immediately goes into dehumidification
signi
f
icant increase in
humidity
Y1 or Y2
Humidity level is significantly
above setpoint (2 or more).
High
**77%/74% of
HIGH COOL
immediately goes into dehumidification
mode (in presence of thermostat deĆ
mand).
Humidity demand satĆ
isfied between thermoĆ
None
Humidity level is slightly (1)
above setpoint.
Off
Off
While unit is not operating (no thermoĆ
stat demand), slide switch is moved
down and back up Blower and com
isfied
between
thermo
stat demands (unit off
cycle). Y1 or Y2
Humidity level falls below
setpoint. No demand.
High
HIGH COOL
down and back up. Blower and comĆ
pressor operate at high speed until next
thermostat demand.
Note - During mode of operation change from cooling to heating, indicating lights will not change until the first thermostat heatĆ
ing demand.
*IMPORTANT Ć 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 compresĆ
sor will latch into high speed after a Y1 demand has occurred for that period of time.