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TECHNICAL & SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. SAFETY PRECAUTION
....................................
2
2. OVERVIEW OF UNITS
......................................
5
3. SPECIFICATIONS
.............................................
9
4. DATA
................................................................
11
5. OUTLINES AND DIMENSIONS
......................
34
6. WIRING DIAGRAM
.........................................
36
7.
NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION
....
38
8. TROUBLESHOOTING
....................................
39
9.
PRECAUTIONS AGAINST REFRIGERANT LEAKAGE
.....
79
10. DISASSEMBLY PROCEDURE
.......................
81
OUTDOOR UNIT
BRANCH BOX
No. OCH468
REVISED EDITION-A
[Service Ref.]
MXZ-8B48NA
PAC-AKA51BC
PAC-AKA31BC
Model name
indication
HFC
utilized
R410A
June 2010
NOTE:
• The cooling capacity table
(4-1.) has been modified.
• This service manual
describes technical data of
outdoor unit and branch box.
As for indoor units, refer to
its service manual.
• RoHS compliant products
have <G> mark on the spec
name plate.
[Model name]
<Outdoor unit>
MXZ-8B48NA
<Branch box>
PAC-AKA51BC
PAC-AKA31BC
(Indispensable optional parts
for MXZ-8B48NA)
PARTS CATALOG (OCB468)
• Please void OCH468.