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2. Mounting and wiring the NT20e
Mounting the NT20e Base Plate
The next set of steps illustrate how to mount the NT20 base plate assembly to your
wall. Please review all the steps carefully before performing any of the actions.
1.
Separate the front from the back of the unit by depressing the bottom center
of the unit (at the model label e.g. “NT20e”).
2.
Position the base plate for the best appearance. Ensure the position allows
you to access and pull the wires through the opening in the base plate.
3.
Use a pencil to mark the center of the screw holes on the left side, right side
and bottom center of the base plate.
4.
Remove the base plate and drill three 3/16" holes in the wall, if drywall, at the
locations you marked. For material such as plaster, drill 7/32" holes where
marked.
5.
Gently tap the enclosed anchors unto the drilled holes until they are flush with
the wall.
6.
Pull the wires through the base plate and position the base plate over the
screw holes.
7.
Attach the base plate to the wall using the three enclosed 1" screws included
with the NT20e.
Wiring the Base Plate Terminals for 2-wire HVAC
Refer to the labels you placed on the wires you removed from the existing
thermostat in the previous steps.
1. Match the letter of your existing thermostat wire with the corresponding
terminal letter on the NT20e. Refer to Table 1 for terminal compatibility of
your system to the NT20e.
2. Strip insulation 3/8" (9.5mm) from wire ends. Take care not to damage labels
for each wire in handling and push excess wire back into wall so as not to
damage while installing. Ensure the ends remain straight.
3. Connect labeled wires only to a terminal post with the corresponding letter as
shown in Figure 1.
4.
If needed, unscrew the terminal post screw which you will use to contact the
wires. Insert the wire straight down into the square hole and tighten the
corresponding screw down onto the wire.
