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EPH CDT2 にも： 操作説明 (2 ページ)
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CDT2 Room Thermostat
10. High and Low temperature limitation
An upper and lower temperature limit may be chosen.
Set
Press and hold the
and
"Limit OFF" will appear on the screen.
Press the
button to select "Limit ON" mode.
Set
Press the
button to con rm you wish to adjust the high limit temperature.
Press the
and
buttons to select the high limit temperature.
Press the
Set
button to select the low limit temperature mode.
Press the
and
buttons to select the low limit temperature.
Press the
button and the thermostat is ready for operation.
"Limit" will appear on the screen.
To deactivate High and Low temperature limitation.
Set
Press and hold the
and
"Limit ON" will appear on the screen.
Press the
button to deactivate this function.
"Limit OFF" will appear on the screen.
Press the
button and the thermostat is ready for operation.
11. Adjusting the switching di erential (Normal)
Set
Press the
button once, Di set will appear on the screen.
The factory default switching di erential of 0.4 C will appear on the screen.
Press the
and
buttons to select the desired di erential from 0.2 - 1˚C.
Press the
button to return to normal operation.
12. Adjusting the setpoint temperature
Press the
or
buttons to adjust the temperature setpoint.
13. Changing the thermostat mode
P
- Normal On/O mode
1
P
- Delay Start mode (DS)
2
P
- Time Proportional Integral Mode (TPI)
3
Press the 'Reset' button at the side of the thermostat.
P
will appear on the screen.
1
Use the
or
buttons to change between P
Select P
for normal operation.
1
Select P
for delay start.
2
Select P
for TPI – If P3 is selected you can press the
3
the amount of cycles and then press the
proportional bandwidth.
'standby' button to con rm.
Press the
See section 16 for more information on TPI.
buttons for 10 seconds.
buttons for 10 seconds.
to P
and P
1
2
3.
Set
button to choose
Set
button to choose the
EPH Controls Ireland
[email protected] www.ephcontrols.com
with Delay Start
14. Normal control mode (On/O )
OFF
When the temperature falls below the setpoint temperature, the ame
symbol
When the temperature rises above the setpoint temperature, the ame
symbol
Temp
22˚C
21˚C
20˚C
19˚C
18˚C
17˚C
15. Delay start control mode
Delay start is an energy saving mode.
When the delay start function is active the ame symbol will continuously
ash on the screen. When in this mode the activation of the thermostat is
delayed by a variable time depending on the current temperature, setpoint
temperature and also the fall in temperature from when the delay start has
activated. See graph (15.1) Delay Start Control.
48.0
42.0
36.0
30.0
24.0
18.0
12.0
6.0
0.0
The ame symbol
When activated the thermostat will allow the heating system time to reach
the setpoint and delay start will remain inactive until it reaches this setpoint.
Delay start can be reactivated by:
Lowering the setpoint below the current temperature, pressing the
'standby' button to set the temperature, then raising the setpoint above the
zone temperature within 6˚C of the setpoint.
The heating will be delayed as per the line on the graph.
If the di erence between the actual temperature and the setpoint is 1 C the
thermostat will delay starting for circa 40 minutes.
If the di erence between the actual temperature and the setpoint is 3 C the
thermostat will delay starting for circa 24 minutes.
If the di erence is 6 C or more, the heating will be switched on immediately.
The time delay will change if the temperature drops from the original
calculation.
To deactivate Delay Start, see section 13.
EPH Controls UK
[email protected] www.ephcontrols.co.uk
Page 2 of 3
Operating Instructions
will appear and the thermostat will switch on.
will disappear and the thermostat will switch o .
Graph (14.1): On / O Control
0
20
40
60
80
Graph (15.1): Delay Start Control
0
1
2
3
4
Temperature below thermostat setting °C
will continue to ash until the thermostat activates.
Setpoint Temperature
Time Minutes
100
5
6
20221103_CDT2-230-DS-TPI_Opsins_PK