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Checklist 1
• Using Checklist 1, check that there are no problems with the installation work.
Is the capacity of the
circuit breaker (Earth
leakage breaker)
appropriate?
Outdoor total capacity A Header unit (A) A Indoor unit A
Follower unit (B) A
Follower unit (C) A
Follower unit (D) A
Is the gauge of the
power cable correct?
Header unit (A) mm
2
Indoor unit mm
2
Follower unit (B) mm
2
Follower unit (C) mm
2
Follower unit (D) mm
2
Is the control
communication line
correct?
Indoor-outdoor connection terminals (U1, U2)
Outdoor-outdoor connection terminals (U5, U6)
Central control system connection terminals (U3, U4)
Is the power of indoor units supplied collectively?
Is it grounded to earth?
Is the resistance sufficient? (10 M
M )rehgih ro or higher
V )%01± V 514-083 nihtiw( ?tneiciffus egatlov rewop niam eht sI
Is the diameter of connecting pipe correct?
Is the branch kit correct?
Is the water drain of the indoor unit arranged so that it flows without accumulation?
Is the heat insulation of pipes sufficient? (connecting pipes, branch kit)
Is there no short circuit of discharge air in the indoor/outdoor units?
After an airtightness test of the pipes, are vacuuming and adding of refrigerant executed?
Are the valves of all the outdoor units fully opened?
Gas side Liquid side Balance side
Header unit (A)
Follower unit (B)
Follower unit (C)
Follower unit (D)
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