Summary of the content on the page No. 1
T8095A/191108AJ/Q682B
Heating, Cooling and Heating/Cooling
Thermostat, Wallplate, and Subbase;
TS8095A/191108AC Heating-Only
Thermostat and Wallplate
Installation Instructions for the Trained Service Technician.
NOTE: Order Q682B Subbase separately.
Preparation
Check thermostat and subbase (if used) suitability for the
Recycling Notice
heating, cooling, or heating/cooling system. Refer to Table 1. M3375
Assemble tools required: flat bladed screwdriver, hand or
This control contains mercury in a
Summary of the content on the page No. 2
Installation Fig. 1—Unpack thermostat. WHEN INSTALLING THIS PRODUCT… THERMOSTAT COVER 1. Read these instructions carefully. Failure to follow them could cause a hazardous condition. 2. Installer must be a trained experienced service technician. 3. After installation is complete, check out product op- eration as provided in these instructions. LIFT IMPORTANT: An incorrectly leveled subbase will cause COVER the temperature control to deviate from setpoint. It is CAPTIVE not a calibration problem.
Summary of the content on the page No. 3
WIRE WALLPLATE OR SUBBASE Fig. 3—Leveling methods for wallplate or Follow the instructions provided by the heating, cooling, subbase. or heating/cooling equipment manufacturer. If not avail- able, refer to the Typical Wiring Diagrams section at the end of this publication. Disconnect the power supply before making wiring con- SPIRIT LEVEL nections to prevent electrical shock or equipment damage. NOTE: All wiring must comply with local electrical codes and ordinances. PLUMB LINE O This thermostat
Summary of the content on the page No. 4
6 7 8 9 10 11 12 Connect the wires to the corresponding terminals on the Hang the thermostat base on the wallplate or subbase. subbase (ordered separately). If labels do not agree with your Insert the two captive mounting screws located in the bot- new subbase, refer to Table 2 and the installation instructions tom corners of the base (Fig. 6). furnished with the subbase. Firmly tighten the screws. NOTE: If wiring a dual transformer system, only the O or INSERT CLOCK BATTERIES the B terminal may
Summary of the content on the page No. 5
0.2 AMP 30 VAC T T F F 12 50 60 70 80 9 3 6 SET HEAT ANTICIPATOR Fig. 8—Set clock. Adjust the heat anticipator lever to match the current rating of the primary control for the proper cycle rate (Fig. 9). Adjustable anticipation must be set for total current of PROGRAM DIAL heat and fan control. The current rating is usually stamped on the control or MINUTE HAND valve (Fig. 10), or a setting may be given in the device instructions. If no current rating or heat anticipator setting is given, measu
Summary of the content on the page No. 6
SET TEMPERATURE CONTROL LEVERS Operate the entire heating system at least one complete The two levers on top of the thermostat control the low cycle. and high temperatures for energy savings and comfort con- If thermostat fails any test, refer to the Troubleshooting trol (Fig. 12). The lever on the left (blue mark) controls the Guide in the Owner’s Manual. lower temperature. The lever on the right (red mark) controls Reset both the temperature setting levers to the desired the higher temperature
Summary of the content on the page No. 7
To check thermostat calibration, allow several hours of Calibration operation after installation. Then read thermometer and re- move cover. Push temperature levers together to a setting NOTE: Select models can be calibrated. below room temperature. Slowly move them up the scale together until the mercury slides across the tube. If the THERMOMETER thermometer reading and the high temperature lever posi- The thermometer in your thermostat was accurately cali- tion are approximately the same at the
Summary of the content on the page No. 8
Fig. 15—Typical hookup for clock powered by Fig. 16—Typical hookup for clock powered by separate 24-Vac transformer. system transformer. Clock powered by battery when system is not powered (e.g., power to system is off or interrupted). CLOCK 2 BATTERY THERMOSTAT CLOCK BATTERY THERMOSTAT SUBBASE C C R W L1 (HOT) SUBBASE 1 C R W C L2 HEAT L1 RELAY (HOT) HEAT 1 L1 L2 RELAY (HOT) 1 L2 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 1 POWER SUPPLY. PROVIDE DISCONNE
