Robertshaw 8425 - 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 8425 Thermostat; NOTE: FOR NEW INSTALLATIONS, MOUNT THERMOSTAT ON; Turn power off to the heating and cooling systems.; Figure 2

WARNING: In heat pump applications, do not connect anything to the W1terminal. When switched to HP mode, W1 is connected internallyto Y1 on the thermostat. 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 ti...

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 Cooling Control Transformer T H E R M O S T A T W1 C R Y1 G O B 24 VAC 120 VAC HEAT/COOL 4-WIRE SINGLE TRANSFORMER Fan Control Y2 W2/E Hot Heating Control Transformer 24 VAC 120 VAC HEAT ONLY 2-WIRE SINGLE TRANSFORMER W1 Y1 G T H E R M O S T A T O B C R Y2 W2/E HEAT/COOL 2 STAG...

Page 7 - Figure 5

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 applications (Figure 5). 17. Replace thermostat cover by snapping into place. 7 R L C Y2 W2/...

Page 8 - Step 3: Testing the Thermostat; CAUTION: DO NOT SWITCH SYSTEM TO COOL OR LEAVE IN COOL MODE

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.Emer: The thermostat controls the second stage emergency heat. Useonly when the primary stage of heat is not functioning...

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

10 8. Wait five seconds or press and the display will switch to the fil- ter monitor setting. 9. CHECK FILTER and the length of hours for the filter monitor will be displayed. 10. Use the or to adjust the filter timer from 0 (OFF) to 9900 hours. NOTE: The filter timer is based on equipment runtime. ...

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; Changing the Temperature

Step 5: Troubleshooting Symptom Remedy Thermostat does not turn on system. Check wiring (see Installation section). If problems with thermostat cannot be resolved, call: Technical Support: (800) 445-8299 Monday-Friday 7:30 AM - 5:30 PM CST For after hours service, a 24-hour automated help line is av...

Page 12 - Two Year Limited Warranty; warrants to the original contractor; Invensys Controls Americas; recommendations; Invensys Controls Americas; agrees to repair or replace at its option any; Invensys; shall not be liable; Invensys Controls Americas; Warranty Claims Department

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...