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TABLE 21
COOLING OPERATING SEQUENCE
SLP98UHV and Single-Stage Outdoor Unit
OPERATING SEQUENCE
SYSTEM DEMAND
SYSTEM RESPONSE
System
Condition
Step
Thermostat Demand
Relative Humidity
Compressor
Blower
CFM
(cool)
Comments
1st
stage
O
G
Status
D*
NO CALL FOR DEHUMIDIFICATION
Normal Operation
1
On
On
On
Acceptable
24
VAC
High
100%
Compressor and indoor
blower follow thermostat
demand
BASIC MODE (only active on a Y1 thermostat demand)
Normal Operation
1
On
On
On
Acceptable
24
VAC
High
100%
Thermostat energizes Y1
and de-energizes D on a
call for de-humidification
Dehumidification
call
2
On
On
On
Demand
0 VAC
High
70%
PRECISION MODE (operates independent of a Y1 demand)
Normal Operation
1
On
On
On
Acceptable
24
VAC
High
100%
Dehumidification mode
begins when humidity is
greater than set point
Dehumidification
Call
2
On
On
On
Demand
0 VAC
High
70%
Dehumidification
Call Only
1
On
On
On
Demand
0 VAC
High
70%
Thermostat will keep
outdoor unit energized after
cooling temperature setpoint
has been reached in order
to maintain room humidity
setpoint.
On-board links at indoor unit with a single-stage outdoor unit:
With Condensing unit - Cut W914 (R to DS) on SureLight® control;
With Heat Pump - Cut W914 (R to DS) & W951 (R to O)on SureLight® control.
*ComfortSense
®
7500 thermostat only
