Separate Wallplate From Thermostat; Wiring; Install Wallplate - Lennox Commercial TouchScreen Thermostat Installation Instructions Manual

Separate Wallplate from Thermostat

Separate the wallplate from the thermostat (see fig-
ure 2).
WALLPLATE
WIRE HOLE
THERMOSTAT
Figure 2. − Separate Wallplate from Thermostat

Install Wallplate

Install the thermostat horizontally on the wall (see
figure 3):
1. Pull the wires through the wire hole on the
wallplate.
2. Position the wallplate on the wall with the arrow
pointing up. Level the wallplate for appearance
only.
3. Use a pencil to mark the mounting holes.
WA L L
WIRES THROUGH WALL
AND WIRE SLOT
MOUNTING
HOLES
MOUNTING
SCREWS (2)
Figure 3. Install Wallplate
4. Remove the wallplate from the wall and drill
two 3/16 inch holes in in the wall (if drywall) as
marked. For firmer material such as plaster,
drill two 7/32 inches holes. Tap the wall an-
chors (provided) into the drilled holes until
flush with the wall.
5. Pull the wires through the wire hole on the
wallplate and position the wallplate over the
wall anchors.
6. Insert the mounting screws into the wall an-
chors and tighten.
505103M 11/08
M22267
WALL ANCHORS (2)
M19916

Wiring

IMPORTANT
− All wiring must agree with applicable codes, ordi-
nances and regulations
− Use 18 gauge thermostat wire. Shielded cable is
not required.
NOTES −
− Sensor wires must have a cable separate from
the thermostat control cable.
− Refer to Table 2 for terminal designation descrip-
tions.
− See figure 7 through 10 for wiring diagrams from
specific equipment applications.
1. Select conventional set of terminal identifica-
tions which correspond to the system type
(conventional or heat pump (see figure 4).
Lennox commercial equipment does not use
the heat pump system terminals.
Y2
L
A
W1
S1
S2
Figure 4. Terminal Identifications for System
2. Loosen screw terminals used for the applica-
tion.
3. Insert the wires into the terminal block and
tighten each screw terminal (see figure 5).
Figure 5. Insert Wires into Terminal Block
4. Push excess wire back into the wall opening
and restrict wires to the shaded area (see fig-
ure 6).
5. Plug the wall opening with non−flammable in-
sulation to prevent drafts from affecting the
thermostat.
Page 2
HEAT PUMP
CONVENTIONAL
RC
Y2
RC
R
L
R
O/B
A
W
Y
W2
Y
S1 G
G
S2 C
C
SCREW
TERMINALS
Type
M19917