Te / Tc Setting - Panasonic Urban Multi MX1R Series Service Manual

Function
1.18

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
∗ 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
50
Te setting
High
Standard
Low
range is -10°C ≤ target Te ≤ 5.5°C. (Piping length is determined automatically during oil return
operation.)
Tc setting
High
Standard
Low
= 43°C when high pressure > 17 kg/cm² (1.67 MPa) and low pressure < 1.8 kg/cm² (0.176 MPa).
Set temperature
8.5 °C
5.5 °C
2.5 °C
Set temperature
49 °C
46 °C
43 °C
Function Urban Multi "MX1, ME1 Series" Using R-22
PACD011001C2