Hitachi RAS-(4-12)HNP(1)(E) - Cancellation of Outdoor Ambient Temperature Limit (GS)

6 Optional functions
176
SMGB0087 rev.0 - 12/2013
Cancellation of Outdoor Ambient Temperature Limit (GS)
Press “PSW1” and select the setting condition “0” to “3” at the cancellation of outdoor ambient temperature limit of “GS”.
Then, this function can be set.
The heating operation is continued under a high outdoor temperature or the cooling operation is continued under a low
temperature.
Settingcondition* Operationmodeforcancellation
0 Not available (default setting)
1 Heating
2 Cooling
3 Heating / Cooling
Cancelled Conditions for Outdoor Unit Ambient Temperature Limit
• Heating Operation
If one of following conditions is continued for 1 second, the unit will be under Termo-OFF.
- Ta > 23ºC and Pd > 3.7 MPa
- Ta > 21ºC, Ti > 26ºC and Pd > 3.7 MPa
- Ta > 15ºC, Ti > 29ºC and Pa > 3.7 MPa
• Cooling Operation
If the following condition is continued for 1 second, the unit will be under Termo-OFF.
- Ta < -7ºC
Ta: Outdoor Ambient Temperature
Ti: Indoor Air Inlet Temperature
Pd: Discharge Pressure
 N O T E
Ifthisfunctionissetandtheoutdoorunitoperatesinthestoppageareaforalongtime,theoutdoorunitmaybedamaged
sinceprotectioncontroliscancelled.