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 7ÐInstall 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 8ÐInstall 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 9ÐInstall 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 10ÐSequence 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.