Service Manual
1-161
INSTALLATION
8.2 Electrical Wiring Capacity
8.2.1 Field Minimum Wire Sizes for Power Supply
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measure for added protection to a properly grounded unit. Install appropriate sized breakers /
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requirements. The equipment installer is responsible for understanding and abiding by applicable codes
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Do not operate the system until all the check points have been cleared.
(A) Verify that electrical resistance is more than one megaohm by measuring the resistance between
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activate the system until the electrical current drain is found and repaired.
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(C) Check to see that the main power has been switched ON for longer than 12 hours prior activating
the system. Power to the crankcase heater needs this time interval to warm the compressor oil up to
operating temperature.
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pipes at the discharge side are heated higher than 194
o
F (90
o
C).
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8.2.2 Details of Electrical Wiring Connection
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arrangement with the outdoor unit.
Select wiring capacity according to the table 8.1. Install a GFCI (Ground Fault Circuit Interrupter) and
main switch as shown in each of the system diagrams below.
Outdoor
Unit
Indoor
Unit
Switchbox
Outdoor Unit
Power Supply
Indoor Unit
Power Supply
Indoor
Unit
Indoor
Unit
GFCI
Main
Switch
GFCI
Main
Switch
Refer to the “Installation and Maintenance Manual”
for the connected outdoor unit for details of wire,
GFCI and main switch for outdoor unit.
Outdoor Unit
Power Supply
Outdoor
Unit
Change-Over
Box
Indoor Unit
Power Supply
Indoor
Unit
Switchbox
Indoor
Unit
Indoor
Unit
GFCI
Main
Switch
GFCI
Main
Switch
Refer to the “Installation and Maintenance Manual”
for the connected outdoor unit for details of wire,
GFCI and main switch for outdoor unit.
Summary of Contents for YVAHP072B31S
Page 2: ......
Page 10: ...viii Service Manual ...
Page 16: ......
Page 17: ...Service Manual 1 1 INSTALLATION 1 Installation ...
Page 577: ...Service Manual 1 561 INSTALLATION 9 Touch Back to return to the Service Menu screen 9 ...
Page 920: ......
Page 921: ...Service Manual 2 1 OPERATION 2 Operation ...
Page 1315: ...Service Manual 3 1 TROUBLESHOOTING 3 Troubleshooting ...
Page 1461: ...Service Manual 4 1 MAINTENANCE 4 Maintenance ...
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Page 1729: ...Service Manual 6 1 FIELD WORK INSTRUCTIONS 6 Field Work Instructions ...
Page 1738: ...6 10 Service Manual FIELD WORK INSTRUCTIONS 6 8 Mollier Chart for R410A ft 3 l b ...
Page 1739: ...SERVICE PARTS LIST Service Manual 7 1 7 Service Parts List ...
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Page 1796: ... 2015 Johnson Controls Inc SM 15001 ...