Separate Wallplate From Thermostat - Lennox T7300 Installation Instructions Manual

Separate Wallplate from Thermostat

1− Separate the wallplate from the thermostat (see
figure 2).
WALLPLATE
WIRE HOLE
THERMOSTAT
Figure 2 − Separate Wallplate from Thermostat
Install Wallplate (See Figure 3)
Mount the thermostat horizontally on the wall:
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 anchors (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 anchors
and tighten.
M22267
WALL ANCHORS (2)
M19916
WIRING
IMPORTANT
− All wiring must agree with applicable codes,
ordinances 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
descriptions.
− See figure 7 through 10 for wiring diagrams from
specific equipment applications.
1. Select conventional set of terminal identifications
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 Type
2. Loosen screw terminals used for the application.
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 figure 6).
5. Plug the wall opening with non−flammable
insulation 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
M19917