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TABLE 20
OPERATING SEQUENCE
G71MPP, ComfortSense
'" 7000 Thermostat and Two-Stage Outdoor Unit
OPERATING
T
"-
SEQUENCE
SXS EM DEMAND
.
SYS'EM RESPONSE
Thermostat Demand
Relative Humidity
Blower
s s,e ste0 ii
iii
Co 0 esso
Condition
Y1
Y2
O
G
W
W
1
2
Status
D
(COOL)
NO CALL FOR DEHUMIDIFICATION
Normal Operation -
24
Y1
1
On
On
On
Acceptable
VAC
Low
Normal Operation -
24
Y2
2
On
On
On
On
Acceptable
VAC
High
ROOM THERMOSTAT
CALLS FOR FIRST STAGE COOLING
BASIC MODE (only active on a Y1 thermostat demand)
24
Normal Operation
1
On
On
On
Acceptable
VAC
Low
Dehumidification
0
Call
2
On
On
On
On
Demand
VAC
High
PRECISION MODE (operates independent
of a Y1 thermostat demand)
24
Normal Operation
1
On
On
On
Acceptable
VAC
Low
Dehumidification
0
call
2
On
On
On
On
Demand
VAC
High
Dehumidification
0
call ONLY
1
On
On
On
On
Demand
VAC
High
ROOM THERMOSTAT
CALLS FOR FIRST AND SECOND STAGE COOLING
BASIC MODE (only active on a Y1 thermostat demand)
24
Normal Operation
1
On
On
On
On
Acceptable
VAC
Dehumidification
0
2
On
On
On
On
Demand
Call
VAC
PRECISION
MODE
(operates
independent
of a Y1 thermostat
demand)
Normal Operation
Dehumidification
call
Dehumidification
call ONLY
1
2
24
On
On
On
Acceptable
VAC
0
On
On
On
On
Demand
VAC
Comments
70%
Compressor and indoor
blower follow thermostat
100%
demand
70%
ComfortSense T_7000
thermostat energizes Y2
and de-energizes
D on a
70%
call for de-humidification
70%
Dehumidification
mode
begins when humidity is
70%
greater than set point
70%
ComfortSense
T'_7000
thermostat
will keep out-
door unit energized
after
cooling
temperature
set-
_oint has been reached
in order to maintain
room
humidity
setpoint.*
High
High
100%
ComfortSense T_7000
thermostat energizes Y2
and de-energizes
D on a
70%
call for de-humidification
Low
70%
High
70%
0
1
On
On
On
On
Demand
VAC
High
70%
On-board links at indoor unit with a two-stage outdoor unit:
Cut factory link from Y1 to Y2 or cut W915 (Y1 to Y2) on SureLight ® integrated
control,
With Condensing unit - Cut W914 (R to DS) on SureLight ® integrated control;
With Heat Pump - Cut W914 (R to DS) & W951 (R to O) on SureLight ®
integrated control,
Dehumidification
mode
begins when humidity is
greater than set point
ComfortSense T" 7000
thermostat will keep out-
door unit energized after
cooling temperature set-
3oint has been reached
in order to maintain room
humidity setpoint.
Page 39
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