Panasonic 140, Installation And Maintenance Manual, Page: 32 / 84

32
13.4.7.1. Heat mode
The water law replaces the heat mode setpoint with the f function of the OAT outside temperature:
• water law setpoint = f(OAT)
Function f is restricted between 20 and 50°C. It is defi ned by points A, B and C in the graph below. The values indicated are
factory values.
f (°C)
OAT (°C)
0 10 15
35
40
45
A
C
B
1/15
35,0 °C
15,0 °C
40,0 °C
10,0 °C
45,0 °C
0,0°C
--------
0,0dK
30,0°C
6,0dK
10,0°C
--------
Disable
-Point C : f
-Point C : OAT
-Point B : f
-Point B : OAT
-Point A : f
-Point A : OAT
Heating mode
------------------------------
-Point B : Delta
-Point B : OAT
-Point A : Delta
-Point A : OAT
Cooling mode
------------------------------
Compensation
Water Law 1/15
35,0 °C
15,0 °C
40,0 °C
10,0 °C
45,0 °C
0,0°C
--------
0,0dK
30,0°C
6,0dK
10,0°C
--------
Disable
-Point C : f
-Point C : OAT
-Point B : f
-Point B : OAT
-Point A : f
-Point A : OAT
Heating mode
------------------------------
-Point B : Delta
-Point B : OAT
-Point A : Delta
-Point A : OAT
Cooling mode
------------------------------
Compensation
Water Law
Points Coordinates Unit Min. Max. Default
A
OAT °C -20 OAT
B
0
f
°C
f
B
50 45
B
OAT °C
OAT
A
OAT
C
10
f °C f
C
f
A
40
C
OAT °C OAT
B
50 15
f
°C
20 f
B
35