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manual abstract
• Read all of the information in this manual before installing or programming this thermostat. • This is a 24V AC low-voltage thermostat. Do not install on voltages higher than 30V AC. • All wiring must conform to local and national building and electrical codes and ordinances. • Do not short (jumper) across terminals on the gas valve or at the system control to test installation. This will damage the thermostat and void the warranty. 1 Features • Four pre-programmed setpoints for each day of the week. • Fast and easy programming for setting all days of the week simultaneously. • Energy efficient recovery. • Residual cooling for added air-conditioning efficiency. • Two “AA” ENERGIZER brand batteries retain program memory, even during power outages. • Low battery indicator. • Multi-colored LED indicators for system status. • Zone compatible as master thermostat. • Fahrenheit/Celsius display option. • Programmable from 45°F (7°C) to 90°F (32°C). • Accuracy within ±1 degree. • Adjustable temperature differential: 1-3 degrees. • Maintains summer and winter programming. Replacing Existing Thermostat 1. Turn off power to heating and cooling system. 2. Remove cover of old thermostat to expose wires. Do not disconnect wires. (Fig. 1) 3. Label wires per Table 1. TABLE 1 Old Label New Label Description R, V-VR or VR-R R 24 VAC Y, Y1 or M Y1 Stage 1 Cooling/Heating Circuit O or R O Reversing Valve (Cooling Mode) B B Reversing Valve (Heating Mode) G or F G Fan Contactor Circuit Y2 Y2 2nd Stage Cooling Circuit W1 or W2 or W-U W2 2nd Stage Heating Circuit L or X L System Monitor LED E E Emergency Heating Circuit C, X or B C 24 VAC, Transformer Common Side NOTE: This thermostat requires a 24V AC common wire for proper operation. 4. After labeling wires, remove wires from terminals. 5. Remove existing thermostat base from wall. 6. Refer to the following section for instructions on how to install thermostat. 2 FIGURE 1 Installing the Model 8355 Thermostat NOTE: For new installations, mount thermostat on inside wall, 4-5 feet above the floor. Do not install behind a door, in a corner, near air vents, in direct sunlight, or near any heat or steam generating fixtures. Installation at these places will affect thermostat operation. IMPORTANT: This thermostat is compatible with 100% lockout systems. To reset the system, turn thermostat to OFF position for at least 60 seconds. 1. Turn power off to the heating and cooling systems. 2. Place COOL-OFF-HEAT-EM in OFF position. 3. Place FAN: AUTO-ON switch into AUTO position. 4. Remove the cover using a coin or screwdriver. FIGURE 2 EM PROG MAN SET PROG/MAN COOL-OFF-HEAT-EM AUX CHECK EMER FAN: AUTO - ON >> FAN: AUTO-ON COOL-OFF-HEAT-EM 5. Place thermostat against the wall at desired location. Make sure wires will feed through opening on base of thermostat. 6. Mark placement of mounting holes. See Fig. 3. Set base aside. 3 FIGURE 3 7. Drill the marked holes using a 3/16" drill bit. NOTE: Enclosed plastic anchors do not require a drilled hole for drywall. 8. Tap plastic anchors into the holes. 9. Align base with plastic anchors and feed wires through opening. See Fig 4. FIGURE 4 10. Secure base to wall with supplied screws. 11. Connect wires to terminal strip. Refer to wiring diagrams on other side of this sheet. Make sure wire connections are secure. 12. Install two "AA" ENERGIZER brand batteries or equivalent into battery compartment. Be sure to match positive (+) ends of batteries with positive (+) battery terminals in the battery compartment. PROGPROG MANMAN Y2 Y1Y1E G W2 FAN AUTO ONFAN AUTO ONCOOL OFF HEAT EMCOOL OFF HEAT EM CHANGECHANGE SETSET PROG/MANPROG/MAN AMAM PMPM MORN DAY EVE NITE EER O B C L RC L R MOUNTING HOLES PROGPROG MANMAN Y2 Y1Y1 E G W2 FAN AUTO ONFAN AUTO ONCOOL OFF HEAT EMCOOL OFF HEAT EM CHANGECHANGE SETSET PROG/MANPROG/MAN AMAM PMPM MORN DAY EVE NITE EERMORN DAY EVE NITE EER O B C L RC L R OPENING 13. Replace cover onto thermostat by snapping into place. 14. Turn on power to system. Test thermostat as described in the following section. 4 Programming Guide Set Time of Day, Day of Week, Temperature Differential, Residual Cooling 1. Press SET & PROG/MAN. Release simultaneously. Press or to change Time of Day. 2. Press 3. Press >> PROG MAN SET PROG/MAN COOL-OFF-HEAT-EM AUX CHECK EMER FAN: AUTO - ON >> SET PROG/MAN SET >>1=MO 2=TU 3=WE >> To Change Day of Week 4=TH 4. Press 5. Press SET 5=FR 6=SA To change 1st Stage >> 7=SU Temperature Differential NOTE: The Temperature Differential is Factory preset at 1°. This means that whenever the room temperature changes by one full degree from the temperature setting, the system will turn on. If the system turns ontoo often, increase the temperature differential. 6. Press 7. Press SET To change 2nd Stage Temperature Differential NOTE: The Second Stage Temperature Differential is Factory preset at 2°. 8. Press 9. Press >> SET >> To change Residual Cooling NOTE: The residual cool feature will keep the system fan on for an additio...