Hitachi RAC-25CNH11, Руководство по обслуживанию

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– 45 –
Room temp.
Start
Start/stop switch
Operation lamp
Compressor rotation speed
Outdoor fan
Reversing Valve
(Heating ON mode)
Maximum
(CMAX)
1 min. 3 min.
Rated
speed
(CSTD)
3000
Fixed rotation period
15 sec.
15 sec. 15 sec.
1 min.
0
Minimum
(CMIN)
Indoor
unit fan
Thermostat judgement
Super Hi
Hi
Med
Lo
Super Lo
Stop Start
Thermostat
OFF
Stop
CLMXTP
Preset temperature
for cooling
(+) SHIFTC
TCMAX
Fan speed
"auto" setting
Note:
(1) Conditions to start Cool dash operation are as follows. When the operation starts with the "AUTO" or "Hi" fan speed or when the fan speed is changed to "Hi" during cooling operation, if the temperature difference between the room
temperature with the compressor rotating at maximum speed and the preset temperature is ( TCMAX: refer to Table 1) or more, Cool dash will start.
(2) Conditions for releasing Cool dash operation (compressor maximum rotation speed period) are as follows.
1 Cool dash has been continued for 25 minutes.
2 The room temperature reaches the cooling preset temperature (including cooling shift value) -1˚C and then the room temperature
≥
preset temperature -0.66˚C is reached after the fixed rotation period has elapsed.
3 The thermostat is turned OFF.
(Ehen Cool dash is released by above 1 , Pl control starts without operating for fixed rotation period.)
(3) The thermostat OFF temperature during Cool dash operation is cooling preset temperature (including cooling shift value) +3˚C, and after the thermostat is turned OFF, Cool dash is finished and Pl control starts.
(4) The minimum ON time of the compressor is 3 minutes, and minimum OFF time is also 3 minutes.
(5) The compressor speed in the fixed rotation period after releasing Cool dash maximum speed is the minimum speed (CMIN).
(6) The time limit to keep the maximum speed (CMAX) of the compressor in the normal cooling operation (other than Cool dash) is within 60 minutes when the room temperature is CLMXTP or less. If the room temperature is more than
CLMXTP, there is no time limit.
(7) When the fan speed setting of the remote control is "Med", the maximum compressor speed is CJKMAX.
(8) When the fan speed setting of the remote control is "Lo", the maximum compressor rotation speed is COZMAX.
(9) When the fan speed setting of the remote control is "Hi", and both the room temperature and external temperature (data from the outdoor unit) satisfy the dewing condition shown in Table 2, the maximum compressor speed is
CKYMAX. (This control is effective only when external temperature data is provided.)
Table 1 TCMAX
Max. speed (CMAX) —
Min. speed (CMIN) Room temp. — Preset
temp. (including shift)
650min
-1
750min -1
800min
-1
850min -1
950min -1
1000min -1
1050min -1
1150min
-1
1200min -1
1250min -1
1350min -1
1400min
-1
1450min -1
1550min -1
1600min -1
1650min -1
1.66˚C
2.00˚C
2.33˚C
2.66˚C
3.00˚C
3.33˚C
3.66˚C
4.00˚C
4.33˚C
4.66˚C
5.00˚C
5.33˚C
5.66˚C
6.00˚C
6.33˚C
6.66˚C
Table 2 Dewing condition judgement value
Item Temperature
Room temp.
External temp.
Dewing
condition (ON)
Dewing
condition (OFF)
Dewing
condition (ON)
Dewing
condition (OFF)
30˚C
32˚C
32˚C
34˚C
Note:
1. Refer to data in page 41 Table 1 for each constant shown by capital letters in the diagram.
BASIC COOLING OPERATION