Mitsubishi Electric CRHV-P600YA-HPB Service Handbook page 96

[ VII Control ]
Bypass Control
Compressor Frequency Control
-4- Injection LEV
Operating range of the LEV
Opening range: 40-480 (fully open)
LEV operation speed
Open 133 plus/sec
Close 200 plus/sec
At startup
For one minute after startup, the valve will be fixed to Initial Setting 1.
Between one and five minutes after startup, the valve will be fixed to Initial Setting 2.
During operation
Five or more minutes after startup, LEV2 (Injection LEV) opening will be controlled every 30 seconds to approximate the dis-
charge SH to the target value according to the changes in high pressure and discharge gas temperature.
(Refer to the table below for the target discharge SH values.)
Target discharge SH (Item code c31: Discharge gas temp. - discharge pressure saturation
temperature)
Refer to Chapter IX [1] 2. "Checking the sensor status."
Outlet water tem-
perature (B) (°C)
B ≤ 30
30 < B ≤35
35 < B ≤45
45 < B ≤55
55 < B ≤65
65 < B
HWE1312A
-8< A ≤ -5
≤ -8
50 50
45 45
40 34
40 35
40 35
40 45
Heat source inlet temp.(A) (°C)
-5< A ≤ 0 0< A ≤ 5
45 45
34 33
40 40
42 42
42 45
45 45
- 89 -
5< A ≤ 10 10< A ≤ 15
45 45
33 33
40 40
42 42
45 45
45 45
15< A
40
35
45
45
50
50
GB