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Hitachi RAS-NP4US Installation, Operation And Maintenance Instructions page 34

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Test Running Record
Compile test running records according to Table 5. Utilize these records for periodic o
well as for troubleshooting.
For models: RAS-NP4US+RAS-NP4CTS through RAS-NP8US+RAS-NP8CTS
Main Power Switch(*1)
Operation
Equipments
Room Thermostat(*1)
Indoor Fan Motor
Electric
Components
Outdoor Fan Motor
Compressor
Safety Devices
NOTES:
*1:Field supplied.
For models: RAS-NP9US+RAS-NP9CTS through RAS-NP15US+RAS-NP15CTS
Main Power Switch(*1)
Operation
Equipments
Room Thermostat(*1)
Indoor Fan Motor
Electric
Components
Outdoor Fan Motor 1
Outdoor Fan Motor 2
Normal Start
(*2)
Reverse Start
(*2)
Safety Devices
NOTES:
*1:Field supplied.
*2:Normal start and reverse start are triggered alternately by the actuation of the first stage switch of room
thermostat.
Operational Sequence Chart
FAN
COOL
TH
MIF
MOF
MC
Fig. 14-1. Standard Operation Sequence
Operational Sequence Chart
FAN
COOL
TH
MIF
MOF1
MOF2
Compressor 1
MC1
Compressor 2
MC2
Compressor 1
MC1
Compressor 2
MC2
Fig. 14-2. Standard Operation Sequence
OFF
AUTO
ON
OFF
Close Close Close Close
OFF
AUTO
OFF
(Stage)
1st ...
ON
ON
ON
ON
2nd ...
Close Close Close Close Close Close Close Close Open
After 3 min.
After 3 min.30 sec.
TEST RUNNING
peration checks
: ON
ON
AUTO
ON
Close Close
After 3 min.
: ON
ON
ON
AUTO
ON
COOLING CALL
ON
ON
OFF
ON
OFF
OFF
, as
: OFF
Open
: OFF
ON
ON
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