Haier AD072XLEAA [23/89] Special installation guide to 21000btu indoor units on free multi system

Haier AF072XCEAA [23/89] Special installation guide to 21000btu indoor units on free multi system
1 TO 2(except for 21000BTU/h units)
A1
A2
B1
B2
Outdoor unit
Indoor units
A2 B2
Communication Wire connection:
1. The indoor unit whose liquid pipe is connected to A1 in A system is called unit A1, its communication
wire of A1(3) A1(4) should be connected to A1(P)A1(Q) respectively.
2. The indoor unit whose liquid pipe is connected to A2 in A system is called unit A2, its communication
wire of A2(3) A2(4) should be connected to A2(P)A2(Q) respectively.
3. The indoor unit whose liquid pipe is connected to B1 in B system is called unit B1, its communication
wire of B1(3) B1(4) should be connected to B1(P)B1(Q) respectively.
4. The indoor unit whose liquid pipe is connected to B2 in B system is called unit B2, its communication
wire of B2(3) B2(4) should be connected to B2(P)B2(Q) respectively.
Note: Because the customers themselves matcTh the communication wire, and the P and Q
are nonpolar, the customers must use shielded communication wires.
Special Installation Guide to 21000BTU indoor units on Free Multi system
Only for outdoor unit AU422XIEAA working with 21000BTU indoor units
1. Special accessory pipes for 21000BTU indoor units:
A B
Changing pipe (3/8-1/2) Collecting pipe (1/4-3/8)
φ9.52 φ12.7
φ6.35
φ9.52
φ6.35
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z 21 z

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