Instruction/ maintenance manual of the product 8625 Robertshaw
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1 Application The Robertshaw 8625 is a multi-stage thermostat designed to control 24 V AC heat pump systems. Features • Large back lit display . • Four preprogrammed E NERGY S TA R ® setpoints for each day of the week. • Adjustable 1 st stage temperature differential: 1.
IMPORT ANT SAFETY INFORMA TION 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 V AC.
IMPORT ANT SAFETY INFORMA TION 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. T urn off power to heating and cooling system.
6. Mark placement of mounting holes (see Figure 3). Set base aside. 7. Drill the marked holes using a 3/16” (5mm) drill bit. NOTE: Enclosed plastic anchors do not require a drilled hole for drywall. 8. T ap plastic anchors into the wall. 9. Align base with plastic anchors and feed wires through opening (see Figure 3).
Wiring Diagrams The following is just a sample of the most common types of HV AC systems. Refer to your system’ s installation manual for wiring information.
6 T o T est Thermostat WARNING: DO NOT SHORT (JUMPER) ACROSS TERMINALS OF GAS V AL VE OR SYSTEM CONTROL TO TEST OPERA TION. THIS WILL DAMAGE THE THERMOST A T AND VOID YOUR W ARRANTY . CAUTION: DO NOT SWITCH SYSTEM TO COOL IF THE TEMPERA TURE IS BELOW 50°F (10°C).
Programming Guide SETTING TIME OF DA Y AND DA Y 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.
6. After pressing SET for the 4th event, the day of the week along the top will switch to SA T SUN and AM1 will be displayed. Repeat steps 2-4 to program the weekend settings. 7. With the weekend settings programmed, place the HEA T -OFF-COOL switch in the COOL position.
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 .
Another way to select a temporary hold is: 1. Press SELECT until the cursor is over TEMP HOLD. Press SET . The temperature will be blinking. Use the or button to change the temperature. 2. Press SET . T o cancel a temporary hold, press SELECT until the cursor is above RUN/SET PROG.
T roubleshooting Symptom Remedy Thermostat does not turn Check wiring. on system. (See Installing Item 8625 Thermostat ) Thermostat turns on and off too Increase temperature differential. frequently . (See Programming Guide ) System fan does not operate Move the Electric/Gas switch to properly .
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An important point after buying a device Robertshaw 8625 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Robertshaw 8625 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Robertshaw 8625 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Robertshaw 8625 you will learn all the available features of the product, as well as information on its operation. The information that you get Robertshaw 8625 will certainly help you make a decision on the purchase.
If you already are a holder of Robertshaw 8625, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Robertshaw 8625.
However, one of the most important roles played by the user manual is to help in solving problems with Robertshaw 8625. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Robertshaw 8625 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
