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 ste0ii 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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