Page 2 - The following parts are included in product model; Section 2. General Information
2 18-HD64D1-1 2.1 Overview 2.2 Contents in Box 2.3 Specifications Specification Description Product Model: TZONE950AC52ZA Product: ComfortLink II Thermostat Size: 7.3” width x 4.3” height x 1.2” depth Storage Temperature -40°F to 175°F, 5% to 95% RH non-condensing Operating Temperature: 25°F to 126°...
Page 3 - ComfortLink II System Connections; Communicating System
18-HD64D1-1 3 2.4 ComfortLink II System Connections Thermostat TZONE950AC52ZA Thermostat TZONE950AC52ZA Outdoor Unit Indoor Unit Relay Panel BAY24VRPAC52DA Relay Panel Outdoor Unit Indoor Unit Communicating System 24V System Wired Remote Outdoor Sensor* BAYSEN01ATEMPA Wired Remote Sensor* ZZSENSAL04...
Page 5 - Section 3. Physical Installation; Wireless
18-HD64D1-1 5 Temperature Sensing Considerations Wireless Reception Considerations Removing Sub-Base Wall Plate The thermostat sensor is designed for installation in climate controlled living spaces. It is recom-mended to place the sensor in central locations with good circulation. Avoid exterior wa...
Page 6 - Mounting Sub-Base to Wall; Select and mark three holes.; must be used to mount the thermostat sub-base to; Mounting to Studs; Recommended
6 18-HD64D1-1 Mounting Sub-Base to Wall Be sure wires are routed through the center of the base plate and are long enough to connect to ter-minals. Select and mark three holes. NOTE: The three hole locations indicated at right are recommended. The top location is an optional mounting screw location....
Page 7 - CAUTION; WARNING
18-HD64D1-1 7 CAUTION: EQUIPMENT DAMAGE HAZARD - Improper wiring can lead to equipment damage. Follow the terminal connection information care-fully to ensure the control is wired properly. After wires are secure, bare wires MUST NOT touch each other. See the Field Wiring Diagrams for specific syste...
Page 8 - Field Wiring
8 18-HD64D1-1 Red Brown Blue Red Brown Blue B D R 24V Single Stage Cooling B D R W1 W2 W3 G Y2 B O BK D Y1 R W1 W2 W3 G Y2 B O BK D Y1 R Yellow Yellow Blue Blue Brown Brown Blue Blue Thermostat Relay Panel Red Brown Blue B D R B D R Indoor Unit Communicating Indoor Unit Communicating Outdoor Unit Co...
Page 9 - Communicating Equipment; Section 5. Installer Setup; Basic Navigation
18-HD64D1-1 9 Communicating Equipment Discovery mode begins when the thermostat is first installed and power is connected. For communicating equip-ment, the thermostat automatically configures standard equipment parameters. 24V Equipment (Using a Relay Panel) Equipment will need to be configured man...
Page 10 - Enter the; Installer’s Setup screen by navigating to:; Installer Setup Menu
10 18-HD64D1-1 Enter the Installer’s Setup screen by navigating to: Home screen --> Menu --> Service --> Technician Access --> Proceed* --> Installer Setup *NOTE: Press and hold the “Technician Access” button for 5 seconds to enter the Installer Setup screen. NOTE: See Section 8 for a...
Page 11 - Advanced; Installer Setup Menu - Advanced; Standard; Installer Setup Menu - Standard
18-HD64D1-1 11 Advanced Equipment settings may be adjusted to alter the default settings to fine-tune a system’s operation. Installed accessories and comfort options may be configured in the Advanced screen. NOTE: Icons available in this menu will vary based on equipment configuration. Example:Press...
Page 12 - ALL settings and; “Reset Advanced Settings” resets the; Wireless Networking
12 18-HD64D1-1 CAUTION: “Restore Equipment Defaults” returns the thermostat to factory settings. ALL settings and data will be lost. “Reset Advanced Settings” resets the Advanced Settings which were configured in the Installer Menu (settings such as system lockouts, accessories, air flow and comfort...
Page 13 - Section 6. Advanced Features
18-HD64D1-1 13 Feature Description 1-Touch Presets The 1-Touch Presets allows for an immediate change to the setpoint status. Set the desired temper-ature for the three status modes (Home, Away & Sleep). The thermostat will remain in the selected mode until another mode is selected or the progra...
Page 14 - There are two requirements before dehumidification is enabled:
14 18-HD64D1-1 Feature Description Cycle Rate The cycle rate affects the cycle time of the system. With a 50% load value, a cycle rate of 3 will allow the system to run for 10 minutes and be off for 10 minutes; completing 3 cycles in one hour. A cycle rate of 5 would allow the system to cycle on and...
Page 15 - Indoor RH setpoint
18-HD64D1-1 15 Feature Description History Screen The History Screen provides system cycle information. Cycle counts and run time can be viewed for first stage and second stage compressor operation, W1 & W2 heating and defrost cycles. This information can be viewed in a 24 hour, 1 week or 2 week...
Page 16 - Guided Setup
16 18-HD64D1-1 Feature Description Runtime History The History Runtime screen provides information on system run time in comparison to the indoor and outdoor temperatures (average indoor along with the high & low outdoor temps). This history can be viewed on a weekly or monthly basis. Scheduling...
Page 17 - Section 7. Troubleshooting; Symptom
18-HD64D1-1 17 Section 7. Troubleshooting Symptom Possible Causes Action Thermostat displays an alert code on the screen. Alert Code is present. Refer to the Alert Code Addendum. Check the Alert icons in the diagnostic screen. Display will not come on Loss of 24VAC between R & B at the thermo-st...