EPH Controls RDT-RF Installation And Operation Manual page 23

Pb -Proportional Bandwidth
This value refers to the temperature below the target at which
the thermostat will start to operate in TPI control. You can set this
temperature from 1.5°C to 3.0°C in 0.1°C increments.
Temp
22˚C
21˚C
20˚C
19˚C
18˚C
17˚C
0
Heating On
Graph (21.1): TPI Control
20 40 60
EPH Controls Ltd.
2°C
Target Temperature
Proportional Bandwidth
Time Minutes
80 100
Heating O
21