Robertshaw 8400 - Manuals - manualsarea.com

Page 2 - Wiring Table; Old Terminal

WARNING: • Always turn off power at main fuse or circuit breaker panel before installing, removing, cleaning, or servicing thermostat. • Read all the information in this manual before installing this thermostat. • DO NOT CONNECT TO 120 VAC. This is a 24 VAC low-voltage thermostat. Do not install on ...

Page 3 - Step 2: Installing Model 8400 Thermostat; NOTE: FOR NEW INSTALLATIONS, MOUNT THERMOSTAT ON; Turn power off to the heating and cooling systems.; Figure 2

1. Turn off power to heating and cooling system. 2. Remove cover from old thermostat to expose wires (Figure 1). 3. Disconnect wires one at a time from existing terminals. Use enclosed labels to mark existing wires. Refer to cross references in the Wiring Tableif existing wiring does not directly ma...

Page 4 - Figure 3; Figure 4

4. Remove the cover using a coin or screwdriver (Figure 3). Set aside. 5. Place thermostat against the wall at desired location. Make sure wires will feed through opening (Figure 4) on base of thermostat. 6. Mark placement of mounting holes (Figure 4). Set base aside. 7. If mounting on drywall, tap ...

Page 5 - Wiring Diagrams

5 Hot Heating Control Fan Control Cooling Control Transformer T H E R M O S T A T RH RC W1 Y1 G O B 24 VAC 120 VAC Hot Heating Control Fan Control Transformer 24 VAC 120 VAC Hot Heating Control Transformer 24 VAC 120 VAC HEAT/COOL 4-WIRE SINGLE TRANSFORMER HEAT ONLY 2-WIRE SINGLE TRANSFORMER HEAT ON...

Page 7 - Figure 5

13. Make sure wire connections are secure. 14. Push excess wire back through opening. 15. Set the Electric/Gas switch to either GAS for a gas/oil heating system or ELEC for an electric heating system (Figure 5). 16. Set the HP option switch to either the HP for heat pump or NON_HP for furnace applic...

Page 8 - Step 3: Testing the Thermostat; CAUTION: DO NOT SWITCH SYSTEM TO COOL OR LEAVE IN COOL MODE; NOTE: ONCE THE THERMOSTAT TURNS OFF WHEN IN THE COOL MODE,; button until the temperature; NOTE: If HP is selected, the heat will not come on until the 5 minute; AUTO-ON switch into the ON

8 Step 3: Testing the Thermostat WARNING: DO NOT SHORT (JUMPER) ACROSS TERMINALS OF GAS VALVE OR SYSTEM CONTROL TO TEST OPERATION. THIS WILLDAMAGE THE THERMOSTAT AND VOID YOUR WARRANTY. CAUTION: DO NOT SWITCH SYSTEM TO COOL OR LEAVE IN COOL MODE IF THE TEMPERATURE IS BELOW 50°F (10°C). THIS CANDAMAG...

Page 9 - System; Temperature Differential; diFF

Step 4: Customizing the Thermostat ♦ Settings System Cool: The thermostat controls the cooling.Off: The heating and cooling systems are off. Heat: The thermostat controls the heat. Fan Auto: Equipment controls the fan.On: The fan operates continuously. ♦ Temperature Differential The temperature diff...

Page 10 - Check Filter Reset; CHECK FILTER; Backlit Display

10 ♦ Check Filter Reset Once the filter timer has expired, CHECK FILTER will turn on and stay on. To clear the message and resetthe timer: 1. Press the and buttons and hold for 3 seconds. CLr will appear in the time display. 2. Press any key to clear the message. The display will transition to thete...

Page 11 - Step 5: Troubleshooting; Symptom; Thermostat does not turn on system.; Installation; If problems with thermostat cannot be resolved, call:; For after hours service, a 24-hour automated help line is available.; Changing the Temperature

Step 5: Troubleshooting Symptom Remedy Thermostat does not turn on system. Check wiring (see Installation section). Note: Although the thermostat has a low battery indicator, replace the batteries once a year to prevent leakage and to prevent the ther-mostat and heat/cooling system from shutting dow...

Page 12 - Two Year Limited Warranty; warrants to the original contractor installer,

Two Year Limited Warranty Invensys Controls Americas warrants to the original contractor installer, or to the original consumer user, each new Robertshawthermostat to be free from defects in materials and workmanship undernormal use and service for a period of two (2) years from date ofpurchase. Thi...