EPH Controls CDT2-24 Betriebsanleitung - Seite 3

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EPH Controls CDT2-24 Betriebsanleitung
CDT2-24 Room Thermostat
16. Time Proportional Integral Mode (TPI)
When the thermostat is in TPI mode and the temperature is rising in the
zone and falls into the Proportional Bandwidth section, TPI will start to
a ect the thermostats operation. The thermostat will turn on and o as it
gains heat so that it doesn't overshoot the setpoint by too much. It will also
turn on if the temperature is falling so it doesn't undershoot the setpoint
which will leave the user with a more comfortable level of heat.
There are 2 settings that will a ect the thermostats operation:
1. The Number of Heating Cycles Per Hour
2. The Proportional Bandwidth
CyC - Number of Heating Cycles per Hour:
This value will decide how often the thermostat will cycle the heating on
and o when trying to achieve the setpoint temperature. You can select
2/3/6 or 12.
Pb - Proportional Bandwidth:
This value refers to the temperature below the setpoint 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.
TPI Control
Temp
22˚C
21˚C
20˚C
19˚C
18˚C
17˚C
0
20
40
Heating On
Example – Program 1 on the thermostat is 21°C for 06:30am and the room temperature is
18°C. The thermostat will start the heating at 06:30am and the heat will start to increase
then but will switch itself o before it reaches temperature and allow the room temperature
to increase naturally – this cycle may begin again if the thermostat isn't reaching
temperature.
EPH Controls Ireland
[email protected] www.ephcontrols.com
6 Cycles
2˚C
Setpoint Temperature
Proportional Bandwidth
Time Minutes
60
80
100
Heating O
with Delay Start
EPH Controls UK
[email protected] www.ephcontrols.co.uk
Page 2 of 3
Operating Instructions
20221006_CDT2-24-DS_Opins_PK