Honeywell T8400C Product Data page 4

T8400C, T8401C AND T8424C,D ELECTRONIC THERMOSTATS
Location
Install the thermostat about 5 ft (1.5m ) above the floor in an
area with good air circulation at average temperature. See
Fig. 3. Do not install the thermostat where it can be affected
by:
— drafts or dead spots behind doors and in corners.
NO
Mounting Decorator Cover Plate and
Wallplate to Wall
IMPORTANT
Level for appearance only. The thermostat functions
normally even when not mounted level.
NOTE: The TRADELINE® models include a thermostat and
wallplate (for wiring and mounting thermostat).
T8400C, T8401C SUPER TRADELINE® models
include a thermostat, wallplate (for wiring and mount-
ing thermostat) and two decorator cover plates (for
covering wall marks).
Mount decorator cover plate (SUPER TRADELINE® model
only), wallplate, T8400C, T8401C or T8424C,D, and the
screws provided (see Fig. 4 or 5) as follows:
1. Place the desired decorator cover plate and the wall-
plate at the desired location on the wall.
2. Pull the thermostat wire through the entrance hole on
the decorator cover plate, then through the wallplate
entrance hole.
3. Select the two mounting holes that best fit the applica-
tion.
4. Fasten the decorator cover plate and the wallplate to
the wall using the screws provided.
5. After wiring the wallplate, plug the hole to prevent drafts
from affecting the thermostat; see Wiring section.
68-0180-3
— hot or cold air from ducts.
— radiant heat from the sun or appliances.
— concealed pipes and chimneys.
— unheated (uncooled) areas such as an outside wall behind
the thermostat.
YES
NO
5 FEET
[1.5 METERS]
Fig. 3. Typical location of thermostat.
4
NO
5-3/4 IN. x 5-3/4 IN.
DECORATOR
COVER PLATE
1
1 3-7/8 IN. x 3-7/8 IN. DECORATOR COVER PLATE (SELECT MODELS).
DRILL 3/16 INCH HOLES (IF DRYWALL) OR 7/32 (PLASTER OR WOOD)
2
WHEN USING WALL ANCHORS.
Fig. 4. Mounting the T8400 and T8401 decorator
cover plate and wallplate to wall.
M10308
WALL
2
WALL
ANCHORS (2)
M11041C