Functions Si-95
32 Functions Inverter K Series
1.17 Te / Tc Setting
You can alter the value of targets Te (evaporating pressure equivalent temperature) and Tc (condensing
pressure equivalent temperature) with setting mode 2. PI control is used to control compressor capacity so
that Te when cooling and Tc when heating are constant.
◆ Target Te changes according to compressor operating frequency, length of piping and indoor load. The
range is -10˚C ≤ target Te ≤ 5.5˚C. (Piping length is determined automatically during oil return
operation.)
∗ Target Tc becomes 3˚C higher when indoor load is large. Target Tc is controlled in accordance with the
following conditions:
◆ Outdoor temp. > 10˚C → target Tc ≤ 46˚C
◆ Outdoor temp. ≤ 10˚C → target Tc ≤ 49˚C
◆ Target Tc
= 43˚C when high pressure > 17 kg/cm
2
(1.67 MPa) and low pressure < 1.8 kg/cm
2
(0.176 MPa).
Te setting Set temperature
High 8.5 ˚C
Standard 5.5 ˚C
Low 2.5 ˚C
Tc setting Set temperature
High 49 ˚C
Standard 46 ˚C
Low 43 ˚C
SI-95.BOOK Page 32 Friday, March 31, 2000 10:59 AM
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