Thermostat Installation; Wiring Connections - Lennox X4146 Installation Instructions Manual

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Thermostat Installation

The thermostat may be installed hori-
zontally in a 4 in. X 2 in. (101.6 mm X
50.8 mm) wiring box or on the wall us-
ing the provided anchors.
1 − Separate the wallplate from the
thermostat as shown.
WALLPLATE
WIRE HOLE
THERMOSTAT
2 − Pass the labeled wires through the
hole on the wallplate.
3 − Position the wallplate on the wall
with the arrow pointing up. Level
the wallplate (for appearance only)
and use a pencil to mark the mount-
ing holes.
LEVEL
WALLPLATE
4 − If anchors are used, move the wall-
plate aside and drill two new holes
(3/16" for drywall; 7/32" for plaster).
5 − Tap the provided wall anchors into
the drilled holes until the back of the
anchor head touches the wall sur-
face.
6 − Position the wallplate over the an-
chors and pull the thermostat wires
back through the wiring opening.
7 − Secure the wallplate using the pro-
PLACE LEVEL ON
SUPPORT TABS
MARK
MOUNTING
HOLES (2)
Page 4
vided screws.
DRILLED
HOLES (2)
WALL
ANCHORS (2)
WALLPLATE
NOTE
Thermostat heat function will
not operate if thermostat has
been stored at, or is being used
in, ambient temperatures at or
above 90°F. Heat function will be
enabled after thermostat has
been placed in ambient tempera-
tures less than 90°F for about 30
minutes.

Wiring Connections

WARNING
Use minimum 18 guage wire for
all thermostat connections.
IMPORTANT
Do not connect the wires to this
thermostat based on wire color.
Improper wiring may cause
damage to the HVAC system.
MOUNTING
SCREWS (2)

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