Step 9
PROVIDE POWER TO THE DISTRIBUTION PANEL
1.MAKE SURE THAT ALL SWITCHES IN THE DISTRIBUTION PANEL ARE OFF!
2.Use a
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4.NO LEDs ON THE DISTRIBUTION PANEL SHOULD BE ON.
Step 10
TURN ON POWER TO ALL HVAC EQUIPMENT AND TO THE THERMOSTATS
1.Turn on power to the HVAC and/or zone control systems.
2.Go to the Distribution Panel and verify that no LEDs on the Distribution Panel are on. If none are on, proceed to # 3. If any LED is on, immediately unplug the transformer that powers the Distribution Panel.
4.One by one, turn on only the power switches (not the communication switches) for each thermostat. Verify that the green LED comes on and that the thermostat display powers up.
• If any LED is on, it is likely that | ILLUSTRATION 4 – Power Switches |
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the HVAC system transformer is |
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powering the thermostat. |
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| A+ A- | B+ B- REF |
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Go to the thermostats, remove |
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thermostat from the base and |
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A+ |
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check the wiring. There must be |
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A- |
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no jumper between the RH or RC |
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B+ |
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and R terminal. The Category 5 |
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B | PWR | ON | OFF |
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cable used to wire | R |
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| PWR | R |
C |
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communications and power |
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should supply the only wires |
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connected to the thermostat | A+ |
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R and C terminals. | A- |
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| ON | OFF |
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B+ |
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3. Turn on the main power switch |
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then turn on the power switch to | R | PWR |
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one of the thermostats (see | C |
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ILLUSTRATION 4). The green LED |
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next to the power switch should |
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| C | R |
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go on, and the corresponding |
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thermostat display should power |
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up. DO NOT TURN ON ANY |
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OTHER SWITCHES. |
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Each thermostats power LED lights when the “PWR” switch is turned on
Step 11
CHECK-OUT HVAC SYSTEM OPERATION
Use the thermostat buttons to verify that the thermostat is controlling the equipment operation. A checkout procedure is supplied in the installation instructions with the thermostat. This procedure will verify only that the thermostat operates the equipment. Communication system checkout will be performed next.
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