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• User Interface — Each installation has only 1 User Interface.
This is the command center for the entire system, and it will
typically be located in Zone 1 to sense and control the
temperature in this zone. If desired, a Remote Sensor may be
used to sense the Zone 1 temperature. This can give the
installer some flexibility in locating the User Interface to
another area.
• Remote Sensor — This is a temperature sensor only, having no
additional user inputs.
• Smart Sensor — Any zone other than Zone 1 may use a Smart
Sensor. It provides a display of zone temperature and means to
adjust the desired temperature in that zone only. It also displays
the outdoor temperature and indoor humidity.
• Wireless Remote Sensor — This is a wireless and battery-
operated version of the Remote Sensor. It is used in locations
where it is not practical to route wires to the sensor location or
where it is desirable to move the sensor to different locations
within the zone. Wireless sensors have a range of 200 feet
through normal residential construction. However, their signals
will not reliably pass through foil insulation, foil vapor barriers,
or other metal objects. As with all radio signals, there may be
"dead spots" which limit the location of sensors. Moving the
sensor one foot in any direct may eliminate the "dead spot".
Be sure to select the desired sensor type for each zone. Standard
kits include only Remote Sensors. Other types must be purchased
separately. Installation Instructions for Smart Sensors and Wireless
Remote Sensors are included with them.
INSTALLATION
Step 1—Check Equipment and Job Site
INSPECT EQUIPMENT — File claim with shipping company,
prior to installation, if shipment is damaged or incomplete.
Step 2—Component Location and Wiring
Considerations
To prevent personal injury or possible equipment damage
disconnect power supply before routing wire.
All wiring must comply with national, local, and state codes.
LOCATING EQUIPMENT CONTROLLER — All wiring is run
back to the Comfort Zone II -B Equipment Controller. Select a
location near the furnace or fan coil where wiring from the User
Interface, each Remote Sensor or Smart Sensor, each damper
actuator, and the equipment itself can come together easily.
The Comfort Zone II -B System is approved for indoor use only
and should never be installed with any of its components exposed
to the elements. The Equipment Controller (and the zone dampers)
may be installed in any area where the temperature remains
between 32° and 158°F, and there is no condensation. The cover
must be installed to prevent damage from other sources. Do not
locate where it will be accessible to children. Avoid areas in which
the sound of relays energizing on the Equipment Controller may be
an annoyance. It may be mounted in either vertical or horizontal
position. Remember that wiring access is likely the most important
consideration.
To prevent possible damage to Equipment Controller, do not
mount on plenum, duct work, or flush against furnace.
LOCATING USER INTERFACE — The User Interface is the
command center for the Comfort Zone II -B system. It should be
located where it is easily accessible and visible to home or
business owner. It is also normally the Zone 1 sensor and as such
needs to be located to properly measure the temperature in Zone 1.
If these 2 requirements conflict, a separate Remote Sensor can be
added for Zone 1. When Remote Sensor is connected to Zone 1
terminals (ZS1 and ZS1C) of Equipment Controller, the system
automatically switches to using this sensor for Zone 1 and ignores
the sensor within the User Interface. This arrangement allows User
Interface to be located at any convenient place within the home or
business, and only the Zone 1 Remote Sensor must be located in
Zone 1.
NOTE: The User Interface also controls humidity functions. If
the User Interface is not used to control Zone 1 temperature, it
must still be located in a suitable area where humidity control will
not be affected.
LOCATING SENSORS — For proper operation, each sensor
must accurately measure the temperature within its zone. Remem-
ber that zone sensors can be a combination of 4 different types as
described in introduction.
For accurate temperature measurement, the following guidelines
should be followed:
Sensor should be mounted:
• Approximately 5 ft (1.5m) from floor.
• Close to the center of its zone, preferably on an inside wall.
• On a section of wall without pipes or duct work.
Sensor should NOT be mounted:
• Close to a window, on an outside wall, or next to a door leading
to the outside.
• Where it will be exposed to direct light and heat from a lamp,
sun, fireplace, or other temperature-radiating object which may
cause a false reading.
• Close to or in direct airflow from supply registers and return-air
grilles.
• In areas with poor air circulation, such as behind a door or in
an alcove.
The Remote Sensor terminals are not marked for polarity because
polarity is not important.
WIRING CONSIDERATIONS — All wiring in the Comfort Zone
II -B system may be unshielded. Ordinary thermostat wire is ideal.
Use 22 gage or larger for normal wiring. Lengths over 100 ft
should use 20 gage or larger wire. Remote Sensors require only 2
conductors, but it is recommended that at least 4 conductors be
run. This will allow a Smart Sensor to replace the Remote Sensor
with no wiring changes at a later date.
The User Interface requires 4 conductors, each damper actuator
requires 3 conductors. The connection to equipment (furnace or
fan coil) could require as many as 8 conductors for a multi-stage
installation. The leaving air temperature (LAT), heat pump tem-
perature (HPT)—(used with heat pumps only), and outdoor air
temperature (OAT) sensors require 2 conductors each. The OAT
sensor may be able to be connected at the outdoor unit using
existing wiring. Refer to Installation Instructions included with the
OAT.
Cables with excess conductors are acceptable. Cut off or fold back
and tape any unneeded conductors.
Plan the routing of wiring early to avoid possible problems later
on.
Remember all wires converge at the Equipment Controller, so its
location is important.
Step 3—Install Components
INSTALL EQUIPMENT CONTROLLER
The Equipment Controller is designed so that wires can enter it
from behind, above, or below. Plan wire routing before mounting
Controller.
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