Hitachi Highly WHP07850VUK, Руководство по установке

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HEAT PUMP WATER HEATER COMPRESSOR CRITERIA FOR LONG LIFE SYSTEM
PAGE:7/30
G
raph 1(b)
P1 P2 P3 P4 P5
Condensing temperature 70
℃
28
℃
5
℃
65
℃
70
℃
Evaporation Temperature 25
℃
25
℃
-30
℃
-30
℃
-10
℃
5 Current limitation
Current peak among motor terminals
（
include instantaneous current peak
）
should be
below 29.0A(at130 ) in order to prevent magnet in motor from demagnetization.
℃
6 Pressure difference between suction and discharge
In all allowable rotational speed range, the difference of pressure should be more than
0.39MPa{4kgf/cm
2
}. But if there is no problem of noise when assembled in air conditioner,
it can also below this value.
7 Discharge pipe temperature
Discharge pipe temperature is measured at a distance 300mm from the surface of compressor
and should be less than 110
℃
. The tip of the thermocouple is fixed by soldering when
measuring discharge pipe temperature .Furthermore, soldering point is covered with urethane
foam to prevent the effect of wind.
8 Air leakage test pressure
The pressure should be less than 2.847MPa{28kgf/cm
2
G}.