Test Operation - Toshiba MMU-AP0091H Installation Manual

13. TEST OPERATION

Before test operation
To protect the compressor at starting time, keep power-ON condition before 12 hours or more.
• Before turning on the power supply, carry out the following items.
1) Using 500V-megger, check there is 1MΩ or more between the terminal block of the power supply and the
earth. If 1MΩ or less is detected, do not run the unit.
2) Check that all the valves of the outdoor unit are fully opened.
• Never push the electromagnetic contactor to carry out a forced test operation.
(It is very dangerous because a protective device does not work.)
<Check list 1>
• Using the "Check list 1", check there is no trouble in the installation work.
Is capacity of the leak Outdoor total capacity
breaker appropriate?
Is diameter of the power cable correct?
Is control communication line correct?
Is power of indoor units supplied collectively?
Is earth grounded?
Is insulation good?
Is the main power voltage good?
Is diameter of connecting pipe correct?
Is the branch kit correct?
Is drain water of the indoor unit arranged so that it flows without accumulation?
Is thermal insulation of pipes good? (Connecting pipes, Branch kit)
Is not short-circuit of discharge air in indoor/outdoor units?
After airtight test for pipes, are vacuuming and adding of refrigerant executed?
Are valves of all the outdoor units fully opened?
WARNING
XXXX A Header unit (A)
Follower unit (B)
Follower unit (C)
Follower unit (D)
Header unit (A)
Follower unit (B)
Follower unit (C)
Follower unit (D)
Indoor –outdoor connection terminals (U1, U2)
Outdoor–outdoor connection terminals (U5, U6)
Central control system connection terminals (U3, U4)
XXXX MΩ or more
XXXX V
Header unit (A)
Follower unit (B)
Follower unit (C)
Follower unit (D)
133
XXXX A Indoor unit
XXXX A
XXXX A
XXXX A
XXXX mm² Indoor unit
XXXX mm²
XXXX mm²
XXXX mm²
Gas side Liquid side
XXXX XXXX
XXXX XXXX
XXXX XXXX
XXXX XXXX
XXXX A
XXXX mm²
XXXX
XXXX
XXXX
Balance side
XXXX
XXXX
XXXX
XXXX