Hitachi RAS-(4-6)HVRNS2E - Initial Troubleshooting for IVX and ES Series

7 Test Run
186
SMGB0064 rev.0 - 08/2011
Model RAS-12HRNM
Cooling operation Heating operation
Discharge pressure
Pd
(MPa)
Discharge pressure (MPa)
Oudoor unit temp. (DBºC)
Indoor unit inlet temp. (WBºC)
Discharge pressure Pd (MPa)
Discharge pressure (MPa)
Indoor unit temp. (DBºC)
Outdoor unit inlet temp. (WBºC)
Suction pressure Ps (MPa)
Suction pressure (MPa)
Oudoor unit temp. (DBºC)
Indoor unit inlet temp. (WBºC)
Suction pressure Ps (MPa)
Suction pressure (MPa)
Indoor unit temp. (DBºC)
Outdoor unit inlet temp. (WBºC)
N O T E
• The above curves indicate pressures under the following conditions:
- Indoor fan speed: HIGH
- Indoor total capacity: 100% compared with the capacity of the outdoor unit. (Connected 4 indoor units.)
- Piping length: 7.5 m (main piping: 5 m, branch piping: 2.5 m x 4)
• Do not use the above data for the refrigerant charge procedure.
- These data should be used as a reference for the checking of operating conditions.`