Specifications

64
3. LEV(A)
For RP1.6~ 6
Control modes RemarksControl details
3-1. Normal control
Opening pulse will vary among steps (1 to 3) according to air conditioner’s
operating status.
• Control timing: Once every 5 minutes after 3 or 7 minutes have passed since
the compressor started.
• LEV opening pulse for each step:
• Requirement for step-up
LEV opening pulse will step up when any of following conditions is satisfied.
(1) The discharge temperature (TH4) is 100: or more
(2) The outdoor condenser/evaporetor temperature (TH6) is 57: or more
(3) The discharge super heat temperature is 50: or more Super heat
temperature = Discharge temperature (TH4) - Outdoor condenser/evaporetor
temperature (TH6)
(4) The sub cool temperature is 12: or more
Sub cool temperature = Outdoor condenser/evaporetor temperature (TH6)
- Outdoor liquid pipe temperature (TH3)
• Requirement for step-down
LEV opening pulse will step down when any of following conditions is satisfied
and any of step-up conditions are NOT satisfied.
(1) The discharge temperature (TH4) is 90: or less.
(2) The outdoor condenser/evaporetor temperature (TH6) is 52: or less.
(3) The discharge super heat temp. is 40: or less.
Super heat temperature = Discharge temperature (TH4) - Outdoor
condenser/evaporetor temperature(TH6)
(4) The sub cool temperature is 3: or less.
Super heat temperature = Outdoor condenser/evaporetor temperature
(TH6) - Outdoor liquid pipe temperature (TH3)
• The step does not change if neither step-up conditions nor step-down
conditions are satisfied.
3-2. Compulsory step-up
When any of the following conditions is satisfied, the step will be forced to 3.
(1) The discharge temperature (TH4) is 110: or more.
(2) The condenser/evaporetor temperature (TH6) is 62: or more.
3-3. Stop control
When the LEV is being stopped, the step will be set to 3.
Step
200
300
480
150
300
480
200
300
480
195
300
480
RP3VHA
220
300
480
220
300
480
RP1.6VHA RP2VHA RP2.5VHA
220
300
480
220
260
480
220
260
480
220
260
480
1
2
3
RP4VHA RP5VHA RP6VHA
RP4VHA
1
RP4YHA
RP5VHA1
RP5YHA
RP6VHA1
RP6YHA
OCT04B-3.qxp 05.11.29 11:30 AM Page 64