EasyManuals Logo

Lennox SIGNATURE SLP99UH090XV48C User Manual

Lennox SIGNATURE SLP99UH090XV48C
70 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #49 background imageLoading...
Page #49 background image
Page 49
TABLE 27
OPERATING SEQUENCE
SLP99UHV and Two-Speed Outdoor Unit
OPERATING
SEQUENCE
SYSTEM DEMAND SYSTEM RESPONSE
System
Condition
Step
Thermostat Demand Relative Humidity
Compressor
Blower
CFM
(cool)
Comments
1st
stage
2nd
stage
O G Status D*
NO CALL FOR DEHUMIDIFICATION
Normal Operation
Y1
1 On On On Acceptable
24
VAC
Low 70%
Compressor and indoor blower
follow thermostat demand
Normal Operation
Y2
2 On On On On Acceptable
24
VAC
High 100%
ROOM THERMOSTAT CALLS FOR FIRST STAGE COOLING
BASIC MODE (only active on a Y1 thermostat demand)
Normal Operation 1 On On On Acceptable
24
VAC
Low 70%
Thermostat energizes 2nd stage
and de-energizes D on a call for
dehumidication
Dehumidication
call
2 On 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
Low 70%
Dehumidication mode begins
when humidity is greater than
set point
Dehumidication
Call
2 On On On On Demand
0
VAC
High 70%
Dehumidication
Call Only
1 On 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.*
ROOM THERMOSTAT CALLS FOR FIRST AND SECOND STAGE COOLING
BASIC MODE (only active on a Y1 thermostat demand)
Normal Operation 1 On On On On Acceptable
24
VAC
High 100%
Thermostat energizes 2nd stage
and de-energizes D on a call for
dehumidication
Dehumidication
Call
2 On On On On Demand
0
VAC
High 70%
PRECISION MODE (operates independent of a Y1 thermostat demand)
Normal Operation 1 On On On Acceptable
24
VAC
Low 70%
Dehumidication mode begins
when humidity is greater than
set point
Dehumidication
Call
2 On On On On Demand
0
VAC
High 70%
Dehumidication
Call ONLY
1 On On On On Demand
0
VAC
High 70%
Thermostat will keep outdoor
unit energized after cooling
temperature set-point has been
reached in order to maintain
room humidity set-point.
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.
*ComfortSense® 7500 thermostat only

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Lennox SIGNATURE SLP99UH090XV48C and is the answer not in the manual?

Lennox SIGNATURE SLP99UH090XV48C Specifications

General IconGeneral
BrandLennox
ModelSIGNATURE SLP99UH090XV48C
CategoryFurnace
LanguageEnglish

Related product manuals