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

PACD011001C2
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 ≤ 48°C
*Outdoor temp. ≤ 10°C → target Tc ≤ 51°C
*Target Tc is 43°C when high pressure > 18.6 kg/cm
< 1.8 kg/cm
Function Urban Multi "MX1R, ME1R Series" Using R-407C
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
2
(0.176 MPa).
Set temperature
10.5 °C
7.5 °C
4.5 °C
Set temperature
51 °C
48 °C
45 °C
2
(1.822 MPa) and low pressure
Function
263