Johnson Controls YVAHP072B31S, Service Manual

Page: 243 / 1796

Service Manual
1-227
INSTALLATION
8. Electrical Wiring
8.1 General Check
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Electrical Code (NEC).
2. Check to ensure that the power supply voltage is within ±10% of the rated voltage.
3. Check the capacity of the electrical wires.
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4. Verify that the ground wiring is securely connected.
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the main power supply. It can result in an electrical shock.
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electrical wiring work or for any scheduled electrical work that is being performed.
Ɣ Tighten screws according to the following torque.
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Ɣ Secure all cables together with zip-ties and seal the connecting hole against the onslaught of
moisture and insects.
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Ɣ Secure the wired controller cable using the cable clamp inside the electrical box.
8.2 Electrical Wiring Capacity
8.2.1 Field Minimum Wire Sizes for Power Supply
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Use a GFCI (Ground Fault Circuit Interrupter).
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Do not operate the system until all check points have been cleared.
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do not operate the system until the source of the electrical drain is found and repaired.
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up the compressor oil by the crankcase heater.
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the pipes at the discharge side are heated to higher than 194
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