Page 2
Table of Contents
General Page 2. . . . . . . . . . . . . . . . .
Shipping and Packing List Page 2.
NecessaryTools Page 2. . . . . . . . . .
Thermostat Location Page 2. . . . . .
Remove Existing Thermostat Page 3
Thermostat Installation Page 4. . . .
Wiring Connections Page 4. . . . . . .
LED Indicator Page 5. . . . . . . . . . . .
Outdoor Temp. Sensor Page 5. . . .
Field Wiring Diagrams Page 6. . . .
Install Batteries Page 8. . . . . . . . . .
Attach T’stat to Wallplate Page 8. .
Set Calendar and Clock Page 8. . .
Adv. Heat Pump Features Page 9.
Installer Set−Up Page 11. . . . . . . . . .
System Test Page 19. . . . . . . . . . . . .
Troubleshooting Page 20. . . . . . . . . .
General
The Lennox X4147 programmable
touch-screen thermostat provides
control for up to three stages of heating
and two stages of cooling. The thermo-
stat may be used to control either a
conventional HVAC system which in-
cludes an outdoor condensing unit and
indoor furnace or a heat pump unit and
indoor air handler. The thermostat ter-
minal block accommodates 24V power
common from the furnace or air han-
dler. Three AAA alkaline batteries are
provided to be used as an alternate
power source or as a back−up in case
of an interruption of power.
Shipping and Packing List
Package 1 of 1 contains
1 − Assembled thermostat (includes
wallplate and thermostat)
1− Bag assembly containing the fol-
lowing:
2 − Screws
2 − Wall anchors
3 − AAA alkaline batteries
1 − Installation instruction
1 − Owner’s guide
1 − Warranty certificate
Necessary Tools
S No. 2 Phillips screwdriver
S Standard pocket screwdriver
S Drill
S Drill bits (use 3/16" for drywall and
7/32" for plaster)
S Pencil
S Level
S Hammer
S Electrical tape
Thermostat Location
Install the thermostat about 5 feet
(1.5m) above the floor in an area with
good air circulation.
Do not install the thermostat where it
may be affected by the following:
S Drafts or dead spots behind doors
and in corners.
S Hot or cold air from ducts.
S Radiant heat from the sun or ap-
pliances.
S Concealed pipes or chimneys.
S Adjacent unconditioned areas
(outside wall behind the thermo-
stat).