Haier AB072XCEAA Service Manual - Page 24

Outdoor wiring diagram should be changed as the following

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2. Pipe installations: Chff^j\bZe Abj Chg]blbhg^j 21000BTU indoor unit Gas pipe φ12.7 A1 Liquid pipeφ9.52 A2 Gas pipe φ12.7 B1 Liquid pipeφ9.52 B2 21000BTU indoor unit Note: Though AU422XIEAA can match with the R407C free multi indoor unit, we do not recommend so. Because that will not only lower the capacity,also the changing pipe 0010759292 will be required for all R407C free multi indoor unit when installation. 3. Outdoor wiring diagram should be changed as the following: Coil of solenoid vavle A2 should be changed to connected with CN29. Coil of solenoid vavle B2 should be changed to connected with CN23. By-pass vavle on both system A and system B should be pulled out and not connected. z 22 z

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2. Pipe installations:
A1
A2
B1
B2
Gas pipe
φ
12.7
Liquid pipe
φ
9.52
Liquid pipe
φ
9.52
Gas pipe
φ
12.7
21000BTU indoor unit
21000BTU indoor unit
Note:
Though AU422XIEAA can match with the R407C free multi indoor unit, we do not
recommend so. Because that will not only lower the capacity,also the changing pipe
0010759292 will be required for all R407C free multi indoor unit when installation.
3.
Outdoor wiring diagram should be changed as the following:
Coil of solenoid vavle A2
should be changed to
connected with CN29.
Coil of solenoid vavle B2
should be changed to
connected with CN23.
By-pass vavle on both
system A and system B
should be pulled out and
not connected.
±²³³´µ¶·¸¹ º·µ ±²»¼·½·²»´µ
±
22
±