2
As a single-piece unit, all required wiring must be brought
to the equipment control module for connection to the terminal
strip. In two-piece configuration, the display module (user in-
terface) can be mounted in the space while the equipment con-
trol module may be mounted near the equipment.
Connection from the display module to the equipment con-
trol module requires only two wires. All other control wires are
connected to the equipment control module from the HVAC
(heating, ventilation, and air conditioning) equipment. This
configuration results in a slimmer profile and locates the equip-
ment control module containing the switching relays away
from the occupied space so relay clicking will not be heard.
Installer should determine whether control will be installed
as single-piece or two-piece. In single-piece configuration, as
many as 14 wires may need to run to wall mounting location
for connection to the control. In two-piece configuration, the
display module and equipment control module are connected
by two wires.
Outdoor Temperature Sensor —
The outdoor air
temperature sensor is not included with the thermostat. It is
available as an accessory. Plan installation so that 2 wires can
be run from equipment control module to an outdoor location,
preferably on the north side of the building or refer to Installa-
tion Instructions included with the outdoor temperature sensor
for simplified connection. Details are provided in sensor
instructions.
Remote Indoor Temperature Sensor —
A re-
mote temperature sensor may be used where it is desirable to
install the control in a limited access location while measuring
the temperature in the space. The remote sensor may be used as
a stand alone device or averaged with a local sensor(s).
NOTE: Only Carrier sensors (part no. ZONECCORRS01)
may be used for standard space temperature sensor averaging.
Sensors must be used as a single sensor, 4 sensors, or 9 sen-
sors, with total sensor wiring not to exceed 1,000 feet.
INSTALLATION
Thermostat Location —
The thermostat should be
mounted:
• approximately 5 feet from the floor
• close to or in a frequently used room, preferably on an
inside wall
• on a section of wall without pipes or ductwork
• where temperature operating limits are within –67 to
257 F (–55 to 125 C)
• where humidity operating range is within 0 to 95% rela-
tive humidity, non-condensing
The thermostat should
NOT
be mounted:
• close to a window, on an outside wall, or next to a door
leading to the outside
• where exposed to direct light and heat from a lamp, the
sun, a fireplace, or any other temperature-radiating
object which may cause a false reading
• close to or in direct airflow from supply registers or
return air grille
• in areas with poor air circulation (such as behind a door
or in an alcove)
Wiring Requirements —
The remote temperature
sensor wiring has the following requirements:
1. All system wiring must be in compliance with all
applicable local and national codes.
2. All sensor wiring should be color coded in conformance
with the standard recommendations.
3. The sensor wiring MUST be completely separated from
the thermostat or any other control wiring and must NOT
be in the same conduit as high voltage wiring. Do not use
building metalwork as a ground. Use only unshielded
wire.
Two-Piece Installation —
For two-piece installation,
perform the following procedure.
1. Turn off all power to equipment.
2. If an existing thermostat is being replaced:
a. Remove existing control from wall.
b. Disconnect wires from existing thermostat, one at
a time.
c. As each wire is disconnected, record wire color
and terminal marking.
d. New or additional wires may be needed to accom-
modate added humidity outputs.
e. Discard or recycle old control.
3. Remove mounting plate from back of display module by
pressing the two tabs on the bottom edge and pulling
away. See Fig. 1. Figure 2 shows the mounting plate re-
moved from the module.
4. Route wires through large hole in mounting base. Level
mounting base against wall (for aesthetic purposes only
— the display module does not need be leveled for proper
operation) and mark wall through 2 mounting holes. See
Fig. 3.
5. Drill two
3
/
16
-in. mounting holes in wall where marked.
Control may be mounted to a standard junction box, if de-
sired. Hole pattern on control mounting base matches
junction box mounting holes.
Fig. 1 — Locking Tab Location
Fig. 2 — Mounting Plate Removed
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