Robertshaw 8625 Operation & User’s Manual

3, IMPORTANT SAFETY INFORMATION WARNING: In heat pump applications, do not connect anything to the W1 terminal. When switched to HP mode, W1 is connected internally to Y1 on the thermostat. Connect AUX heat to the W2/E terminal. 1. Turn off power to heating and cooling system. 2. Rem…

7, Programming Guide SETTING TIME OF DAY AND DAY OF WEEK 1. Press SELECT until the cursor is over SET CLOCK. Press SET. The HOURS segment will be blinking. Use the or button to adjust the time. NOTE: The AM or PM indicator will change as the HOURS display rolls through a 24 hour cycle. 2. P…

8, 6. After pressing SET for the 4th event, the day of the week along the top will switch to SAT SUN and AM1 will be displayed. Repeat steps 2-4 to program the weekend settings. 7. With the weekend settings programmed, place the HEAT-OFF-COOL switch in the COOL position. Repeat steps 2-6 to…

9, 6. Press SET. The display will switch to the differential setting for 2 nd stage heating and cooling. 7. The display will read diF2. Press the or button to adjust the differential up or down. 8. Press SET. The display will switch to the differential delay. 9. The display will …

5, Robertshaw 8625 Wiring Diagrams The following is just a sample of the most common types of HVAC systems. Refer to your system’s installation manual for wiring information. 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 Hot Heating Control Fan Control …

6, 6 To Test Thermostat WARNING: DO NOT SHORT (JUMPER) ACROSS TERMINALS OF GAS VALVE OR SYSTEM CONTROL TO TEST OPERATION. THIS WILL DAMAGE THE THERMOSTAT AND VOID YOUR WARRANTY. CAUTION: DO NOT SWITCH SYSTEM TO COOL IF THE TEMPERATURE IS BELOW 50°F (10°C). THIS CAN DAMAGE THE AIR CONDITIONIN…