5. Insert 2-conductor wiring through 1 of pre-drilled holes in side
of back plate.
6. Connect sensor to 2-wire conductor using provided wire nuts.
(See Fig. 16 for connection to Comfort Zone Center.)
Step 7—Install Dx Coil Sensor
The Dx coil temperature sensor is recommended for use in heat
pump with fan coil applications only. The sensor should be
installed between Dx coil and electric heaters. It measures Dx coil
temperature and adds extra protection for high/low temperature
limits. The range is from 30°F to 180°F. The Dx coil sensor
interfaces to Comfort Zone Center on terminal TB-1. (See Fig. 16.)
To activate Dx coil temperature sensor turn T-27 on. When
activated, the Dx coil sensor has built-in LAT setpoints of 50°F
and 45°F in the cooling mode, and 105°F and 110°F in the heating
mode. This is non-adjustable.
Step 8—Install Four Zone Controller
The Four Zone Controller is the zone 1 thermostat. It is recom-
mended to locate this in the zone occupied as the living room or
family room for maximum comfort.
DO NOT locate controller where supply air can blow directly on
it. Avoid locating controller where heat from any lamps, appli-
ances, or direct sunlight will affect temperature sensor on control-
ler. Do not locate on an outside wall or next to a return air grill.
1. Separate base plate from main body of controller.
2. Pull 3-wire cable for communication bus and 5-wire cable for
controller through 3/4-in. round hole on base plate. Three-wire
cable and 5-wire cable must be separate jacketed wiring. Do
not use one 8-wire cable. (See Fig. 17.)
NOTE:
Insulate or seal field wiring feed through hole to reduce
draft.
3. Mount base plate using provided screws, starting screw in
round hole first then second screw in slotted hole. On drywall
it is recommended to use provided plastic wall anchors.
NOTE:
If mounting controller using an electrical box, mount base
plate using pair of horizontal holes.
4. Level base plate and tighten screw in slotted hole first, then
the screw in round hole.
5. Connect the 3 wires for communication bus and the 5 wires for
controller to base plate terminal screws. (See Fig. 16.) Ensure
that there are no excess or bare wires exposed.
6. Plug base plate connector into back of main body and ensure
it is secure into connector located on back of 4 zone
controller’s main body. Ensure connectors and main body are
secure.
7. Align main body with base plate and snap into place.
Step 9—Install Remote Room Sensors or
Smart Sensors (Optional)
Comfort Zone may have up to 4 zones. The 4 zone controller
controls zone 1. Remote room sensors or smart sensors control the
other 3 zones. If using a smart sensor, a smart sensor power pack
must be used. The remote sensors should be located 5 ft above the
floor and must be less than 200 ft away from Comfort Zone Center.
DO NOT locate sensors where supply air can blow directly on
them. Avoid locating sensors where heat from any lamps, appli-
ances, or direct sunlight will affect temperature sensor on room
sensors. Do not locate on an outside wall or next to a return air
grill.
1. Separate the 2 parts of sensor and mount back plate with
provided flat-head screw.
2. Pull a 2-wire conductor through hole on right-hand side.
3. Connect black or white wire to terminal labeled B- and
connect red wire to terminal labeled R+.
4. Align sensor case with base plate then press firmly until cover
snaps into place.
Step 10—Sequence of Operation
TEMPERATURE SETPOINTS
The Comfort Zone System uses 2 temperature setpoints. The
setpoints are displayed in the left-hand window on the 4 zone
controller. (See Fig. 18.)
In display window, cooling setpoint is shown on upper left and
heating setpoint is shown on lower right.
The temperature setpoints for any of the 4 zones can be displayed
by the 4 zone controller. When the 4 zone controller rotary switch
points to zone 1, setpoints for zone 1 at the 4 zone controller are
displayed. Selecting zone 2, zone 3, or zone 4 will display
setpoints for each of these zones which use either remote room
sensors or smart sensors. The system is not required to have all 4
zones installed.
HEATING AND COOLING COMFORT SETPOINTS
If space temperature is between heating and cooling setpoints for
the zone, then the zone is said to be "satisfied" with respect to
temperatures. When a zone is "satisfied" no heating or cooling
equipment will turn on to condition the space. For example, if
cooling setpoint is 76°F and heating setpoint is 72°F, then a space
temperature of 73°F is assumed to be satisfactory and no heating
or cooling of zone is required.
If space temperature in a zone falls below heating setpoint, then
that zone needs to have heat added to zone which will raise space
temperature back to heating setpoint. For example, if heating
setpoint is 72°F and space temperature is 70°F, then space
temperature must be raised 2 degrees in order for zone to be
satisfied. In this case, temperature "heating demand" for zone is
2°F. (72°F minus 70°F.)
Otherwise, if space temperature in a zone rises above cooling
setpoint, then that zone needs to have heat removed from zone
which will lower space temperature back to cooling setpoint. For
example, if cooling setpoint is 76°F and space temperature is 77°F,
space temperature must be lowered 1° in order for zone to be
satisfied. In this case, "cooling demand" for zone is 1°F. (77°F
minus 76°F.)
Comfort Zone allows owner or installer to set ranges for comfort
setpoints along with maximum and minimum temperatures which
can be used by system.
Comfort Zone allows both heating and cooling comfort setpoints
to operate in a 14° span. The heating and cooling temperature
"spans" can be set to allow for a selected range of operation.
Rotary switch position 9 sets base temperatures for both heating
and cooling spans.
When switch is set to 9, both heating and cooling base tempera-
tures are displayed and each can be modified by using up/down
setpoint buttons. The base temperatures are the same for all 4
zones.
If cooling base temperature is set to 68°F, then cooling comfort
range will be 68°F to 82°F. If heating base temperature is set to
54°F, then heating comfort range will be 54°F to 68°F.
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