Lennox SIGNATURE SLP99UH070XV36B - Page 48

Page 48
TABLE 24
Allowable Heating Speeds
SLP99UH
Model
-15% -7.5% Default +7.5% +15%
All Models Allowed Allowed Factory Allowed Allowed
TABLE 25
Allowable Circulation Speeds
SLP99UH Model
28%
(Second Stage Cool)
38%
(second stage cool)
All Models Allowed Factory Setting
TABLE 26
COOLING OPERATING SEQUENCE
SLP99UHV 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-humidication
Dehumidication
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%
Dehumidication mode
begins when humidity is
greater than set point
Dehumidication
Call
2 On On On Demand 0 VAC High 70%
Dehumidication
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