Manuals
/
Lennox International Inc
/
Household Appliance
/
Heat Pump
Lennox International Inc
4HP18LT
manual
Issue
Models:
4HP18LT
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
28
Download
28 pages
8.37 Kb
19
20
21
22
23
24
25
26
27
28
Install
Wire Diagram
Compressor Delay
Electrical Wiring
Maintenance
System Diagnostic Module
To Access the Schrader Port
Flushing Procedure
Refrigerant Charge Adjustment
Temperature Setting Levers
Page 28
Image 28
NOTES
506470-01
Issue 1007
Page 28
Page 27
Page 28
Page 28
Image 28
Page 27
Page 28
Contents
Save these instructions for future reference
Lennox International Inc. Company
Installation
Installation Clearances
General
Torque Table
Electrical Wiring
Slab Mounting
Slab Mounting
Roof Mounting
Installing Refrigerant Line
Refrigerant Piping
Placement
Outside Unit Placement & Installation
Line Set Isolation
Refrigerant Line Set Diameters
Refrigerant Line Sets Installing Horizontal Runs
Refrigerant Line Sets Transition from Vertical to Horizontal
Flushing Procedure
Required Euipment
Refrigerant Metering Device
Expansion Valve Systems
To Access the Schrader Port
To Close Liquid or Suction Line Service Valve
Using an Electronic Leak Detector
Evacuation
Issue
START-UP
Refrigerant Charge Adjustment
Refrigerant Charging
Issue
R410A Temperature/Pressure Chart
Approach Values for TXV Systems
Issue
Operation
Defrost Control Timing Pins
Compressor Delay
Time Delay
Pressure Switch Circuit
Interpreting the Diagnostic LEDs
System Diagnostic Module
LED Description
24VAC Power Wiring
Thermostat Demand Wiring
Miswired Module Codes
Maintenance
Temperature Setting Levers
Inspect and clean outdoor coil
Homeowner Information
Fan Switch
System Switch
Temperature Indicator
Indicating Light
Start-Up and Performance Checklist
Wire Diagram
Issue
Top
Page
Image
Contents