Honeywell T8195B Installation Instructions - Page 2

Installation WHEN INSTALLING THIS PRODUCT... 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. IMPORTANT: An incorrectly leveled subbase will cause the temperature control to deviate from setpoint. It is not a calibration problem. CAUTION 1. Disconnect power supply to prevent electrical shock or equipment damage. 2. To prevent interference with the thermostat linkage, keep wire length to a minimum and run wires as close as possible to the subbase. 3. Do not overtighten thermostat captive mounting screws because damage to subbase threads can result. 4. Do not short across coil terminals on relay. This can burn out the thermostat heat anticipator. LOCATION Locate thermostat about 5 ft [1.5m] above the floor in an area with good air circulation at average temperature. Do not mount the thermostat where it may be affected by: - drafts, or dead spots behind doors and in corners. - hot or cold air from ducts. - radiant heat from the sun or appliances. - concealed pipes and chimneys. - unheated (uncooled) areas such as an outside wall behind the thermostat. Run wires from the heating, cooling, or heating/cooling equipment to the new thermostat location. IMPORTANT: This control requires an additional conductor to the control transformer common (e.g., a typical 2-wire heating system requires three wires be pulled, a 4-wire heating/cooling requires five wires). UNPACK THERMOSTAT Handle your new thermostat carefully; rough handling may interfere with its accuracy. Before unpacking, refer to Fig. 1. Remove and discard the shipping wrap. IMPORTANT: Save package of screws and instructions for the homeowner. Remove the thermostat cover by lifting from the bottom. Set aside cover until needed later. Carefully remove the material protecting the mercury switch bulb. Loosen two captive mounting screws, and separate wallplate (if provided) from back of thermostat base. MOUNT WALLPLATE OR SUBBASE Wall Mounting (Fig. 2) Hold the wallplate or subbase in position on wall (Fig. 2). Mark holes on the wall for anchors. Use spirit level to make sure the wallplate or subbase is level. Fig. 1-Unpack thermostat. CAPTIVE MOUNTING SCREWS THERMOSTAT COVER 11 10 9 8 7 12 11 6 LIFT COVER 9 8 76 10 5 3 2 1 12 4 THERMOSTAT BASE REMOVE PACKING MATERIAL M8605 Drill 3/16-in. holes, and gently tap anchors into holes until flush with the wall. Pull wires through the large wiring hole in the wallplate or subbase. Loosely fasten the wallplate or subbase to the wall with the three screws. Do not completely tighten the screws. Carefully level the wallplate or subbase (Fig. 3), and firmly tighten the screws. Fig. 2-Mounting wallplate or subbase to wall. 3 SCREW HOLES WITH PLASTIC ANCHORS O B R W G Y FAN ON AUTO HEAT COOL OFF HEATING/COOLING SUBBASE M1552A 3 SCREW HOLES WITH PLASTIC ANCHORS HEATING-ONLY WALLPLATE M857 69-0564-3 2