User manual HONEYWELL CHORONOTHERM IV INSTALLATION GUIDE, CHRONOTHERM 4 INSTALLATION GUIDE

[. . . ] T8602D Chronotherm® IV Programmable Thermostats INSTALLATION INSTRUCTIONS APPLICATION The T8602 Chronotherm® IV Programmable Thermostat provides electronic control of 24 Vac single-stage heating and cooling systems or 750 mV heating and 750 mV cooling. Refer to Table 1 for a general description of the thermostat. All T8602 Thermostats are powered by batteries. Table 1. T8602 D System Heat-Cool Changeover Manual or Automatic Selectable System Selection Heat-Off-Cool or Heat-Off-Cool-Auto Fan Selection On-Auto Comments System and fan selections are done by keyboard. If this control is replacing a control that contains mercury in a sealed tube, do not place your old control in the trash. [. . . ] — To enter the installer setup, press and hold the information i key with the increase and decrease keys until the first number is displayed. All display segments appear for approximately three seconds before the number is displayed. — To advance to the next Installer Setup, press the Time ∆ key. — To change a setting, use the increase or decrease key. — To scroll the Installer Setup numbers backward, press the Time ∇ key. — To exit the Installer Setup, press Run Program. INSTALLER SETUP NUMBER DISPLAY (COLUMN 2 OF TABLE 3) FACTORY SETTING OR OTHER CHOICE DISPLAY (COLUMN 3 OR 5 OF TABLE 3) M14618 Fig. Display of Installer Setup number and setting. CAUTION Electric Heat Configuration Hazard. Configure electric heat system to 1 in Installer Setup number 2 to prevent system running without fan. IMPORTANT Only configured numbers are shown on the device. Example: If thermostat does not have a System key, Installer Setup Number 12 will not be displayed. Review Table 3 factory settings and mark any desired changes in the Actual Setting column. When Installer Setup is complete, review the settings to confirm that they match the system. 5 69-1510-4 T8602D CHRONOTHERM® IV PROGRAMMABLE THERMOSTATS Table 3. Installer Setup Number (Press Time ∆ key to change) 1 2 (Number 2 must be set to 1 to extend fan operation. ) Factory Setting Display — 0 Description — Conventional applications where equipment controls fan operation in heat mode. — 6—6 cph used for conventional heat. (Press Display — 1 Other Choices or key to change) Description — Heat pump or electric heat applications where thermostat controls fan operation in heat mode. Actual Setting — Select Not Used. Heating cycle rate. 3 4 — 6 — 1, 3, or 9 — 1—1 cph used for radiant floor heat, gravity system. 3—3 cph used for hot water systems or high efficiency furnaces. 9—9 cph used for electric heat systems. — 0—Auto changeover 2—Auto only Adaptive Intelligent Recovery™ control is activated (system starts early so setpoint is reached by start of program period). — Not Used. System setting adjustment Adaptive Intelligent Recovery™ control. 5 thru 11 12 — 1 — Manual changeover Conventional recovery (system starts recovery at programmed time). — No outdoor temperature is displayed. — 0 or 2 — 13 1 — Not Used. Outdoor temperature display (select models). [. . . ] Set heating setpoint to desired temperature. • Check for 24 Vac between R or RC and Y terminals — If missing 24 Vac: — check if the circuit breaker is tripped—reset the circuit breaker. — check if the system fuse is blown—replace the fuse. — check if the power switch on the HVAC equipment is in the Off position—set to the On position. [. . . ]