Hitachi FSG Series, Технический каталог

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TEST RUN
17
/11
Example:
n
Cooling Operation
Indoor Unit 1.0 2.5 2.5 4.0
iE (%) (from the checking data) 20 30 55 40
Converted Value of iE 20
(1.0 X 20)
21
(0.7 X 30)
50
(2 X 55-60)
28
(0.7 X 40)
Sum of Converted Value of iE (A) 119 (= 20+21+50+28)
Normal Value (B) 60 to 270 (=10 X 6 to 10 X 27)
Judgement OK [(A) is within the range (B).]
n
Heating Operation
Indoor Unit 1.0 2.5 2.5 4.0 RAS-10FSG
Ti (Indoor Suction Temp.) 26 27 23 24 -
Average of Ti 25
(To be added depending on the indoor unit capacity.)
To (Outdoor Air Temp.) (°C) 10
oE1 (%) (A) 58
Normal Value (*1) (B) 55 (*2)
Judgement
OK [(A) is within (B)
±
15]
?
NOTE:
(*1) The normal value can be read from the curves of
“Expansion Valve Opening” for outdoor units in case
of heating operation, shown in the next pages.
Example: (*2)
RAS-10FSG (Heating Operation)
n
The cases where this method is not applicable :
This checking method is not applicable under such
conditions as indicated below.
In such cases, remove the causes of the conditions before
checking.
Tendency of Indoor / Outdoor
Expansion Valve Opening
No. Conditions
Cooling Heating
1 Short-circuited Air at Indoor Unit
Tends to be
Excessively Open
–
2 Shot circuited Air at Outdoor Unit
Tends to be
Excessively Open
Tends to be
Excessively Closed
3
Resistance of Connecting Pipe is Big
(Due to smashed pipe or small liquid pipe) Tends to be
Excessively Open
Tends to be
Excessively Open
Locked (Fully Open)
Tends to be
Excessively Closed
–
4
Indoor Unit Expansion
Valve Failure
Locked (Fully Closed)
Tends to be
Excessively Open
–
Locked (Fully Open) –
Tends to be
Excessively Closed
5
Outdoor Unit Expansion
Valve Failure
Locked (Fully Closed)
Tends to be
Excessively Open
Tends to be
Excessively Open
(OE1)