PENSOTTI PCH 18 Instruction Manual page 54

Regulating the Flow temperature in accordance with the outdoor temperature
The outdoor sensor has to be connected directly to circuit board SM20021. The sensor can thus be managed in one
of two ways:
In case of remote controller + outdoor temperature sensor installation, the climatic compensation curve is set by
the remote itself (see remote control installation and operating manual).
In case of outdoor temperature sensor only installation, the climatic compensation curve is set using the central
heating control knob. As the knob (see fig. 2) is rotated, the numbers corresponding to the curve shown in figure
1 are displayed
The factors governing the correction is reported in figure 1.
The selection of the compensation curve is determined by the maximum delivery temperature Tm and the minimum
outdoor temperature Te.
N.B. The y-axis values of the delivery temperature Tm refer to standard 176-86 °F appliances or 104-77 °F floor-
mounted appliances. The type of appliance can be programmed using parameter 3 (see 5.1 "Parameter
programming").
Tm
104 MAX 176
167
158
149
95
140
131
122
86
113
104
95
77 86
MIN
81 79
TM-MAX/MIN = delivery temperature range selected
Fig. 1
Te = Outdoor temperature
Fig. 2
INSTALLATION INSTRUCTIONS
DELIVERY TEMPERATURE CORRECTION AS A FUNCTION OF OUTSIDE
TEMPERATURE WITH RESPECT TO THE POSITION OF THE HEATING
TEMPERATURE CONTROL SET BY THE USER
77 75 73 72 70 68 66 64 63 61 59 57 55 54 52
OUTDOOR SENSOR
7
8
9
50 48 46 45 43 41 39 37 36 34 32 30
Tm = delivery temperature
50
6 5 4
3
2
1
0
28 27 25 23 21 19 18 16 14 12 10 9 7
110V 60Hz
Te (°F)
5