Operating Instructions
Page 2 of 2
CDTP2 Room Thermostat
Hardwired
11. Factory program setting
5 / 2d
10. Setting the date, time and operating mode
Press the button once. ‘Set Date Year’ will appear on the screen.
Press the or buttons to adjust the year.
Press the ‘OK’ button.
Press the or buttons to adjust the month. Press the ‘OK’ button.
Press the or buttons to adjust the day.
Press the ‘OK’ button.
Press the or buttons to adjust the hour.
Press the ‘OK’ button.
Press the or buttons to adjust the minute. Press the ‘OK’ button.
Press the or buttons to adjust from 5/2d to 7d or 24h mode.
Press the button or wait 10 seconds and the thermostat will return to
normal operation.
Set
12. Adjusting the program settings for 5/2d
Press the button twice.
Programming for Monday to Friday is now selected.
Press the and buttons to adjust the P1 time. Press the ‘OK’ button.
Press the and buttons to adjust the P1 temp. Press the ‘OK’ button.
Repeat this process to adjust P2 to P6 times and temperatures.
Press the button.
Programming for Saturday to Sunday is now selected.
Press the and buttons to adjust the P1 time. Press the ‘OK’ button.
Press the and buttons to adjust the P1 temp. Press the ‘OK’ button.
Repeat this process to adjust P2 to P6 times and temperatures.
Press the button to return to automatic mode.
If 7 D mode is selected, you can program each day of the week with 6
individual times and temperatures.
If 24H mode is selected, you can only program each day of the week with the
same 6 times and temperatures.
Press the and buttons to adjust the temperature setpoint.
‘Manual’ will appear on the screen.
Press ‘OK’ or after 10 seconds the thermostat will operate in this
temporary override.
Press the button to return to automatic mode.
Set
Set
13. Temporary override (Manual)
Press the button. ‘Hold’ will appear on the screen.
Press the and buttons to adjust the temperature setpoint.
Press ‘OK’ or after 10 seconds the thermostat will operate in this
permanent override.
Press the button to return to automatic mode.
Press the ‘OK’ and ‘Hold’ buttons for 5 seconds.
‘0.4˚C’ will appear on the screen.
Press the up or down buttons to adjust from 0.2, 0.4, 0.6, 0.8 or 1C.
Press the button to return to normal operation.
14. Permanent override (Hold)
15. Adjusting the switching differential
0.4˚C
Mon-Fri
5/2D
P1
P2
P3
P4
P5
P6
06:30
08:00
12:00
14:00
17:30
22:00
21˚C
18˚C
21˚C
18˚C
21˚C
16˚C
21˚C
18˚C
21˚C
18˚C
21˚C
16˚C
Sat-Sun
08:00
10:00
12:00
14:00
17:30
23:00
Mon-Fri
7D
P1
P2
P3
P4
P5
P6
06:30
08:00
12:00
14:00
17:30
22:00
21˚C
18˚C
21˚C
18˚C
21˚C
16˚C
21˚C
18˚C
21˚C
18˚C
21˚C
16˚C
Sat-Sun
08:00
10:00
12:00
14:00
17:30
23:00
P1
P2
P3
P4
P5
P6
06:30
08:00
12:00
14:00
17:30
22:00
21˚C
18˚C
21˚C
18˚C
21˚C
16˚C
Everyday
24H
Boiler
Plus
Hold
EPH Controls Ireland
[email protected] www.ephcontrols.com
EPH Controls UK
[email protected] www.ephcontrols.co.uk
20180521_CDTP2_OpIns_JW
Normal Mode (Nor)
16. Installer menu
To access the installer menu, you must hold
OK
and for 5 seconds.
When in the installer menu, press or and
OK
to navigate and select.
When the thermostat is in Normal mode, the thermostat will try to reach the
target temperature after the program changes.
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
room temperature will start to increase then.
To return to main menu, press
OK
to select
Nor
When the thermostat is in Optimum Start mode, the thermostat will try to
reach the target temperature by the start time of the next switching time.
This is done by setting the Ti (time interval) on the thermostat in this menu
to 10, 15 or 20. This will allow the thermostat 10 mins, 15 mins or 20 mins to
increase the room temperature by 1°C.
Ti can be set when OS is selected in the installer menu.
To return to main menu, press
OK
to select required
Ti
To achieve the target temperature when the program starts, the thermostat
will read:
1. The Room Temperature (RT)
2. The Setpoint Temperature (ST)
3. The Target Temperature Difference (TTD) is the difference between
the setpoint temperature and the room temperature .
The time (in minutes) that it will take to overcome (TTD) is called Optimum
Start Time (OST) and its maximum value is 3 hours = 180 mins. This is
subtracted from the start time.
As the temperature increases the thermostat will recalculate the OST if the
temperature is increasing too quickly.
Optimum Start Mode (OS)
Example when Ti = 20
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
05:30am to reach 21°C for 06:30am @ Ti=20.
Example when Ti = 10
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
06:00am to reach 21°C for 06:30am @ Ti=10.
20˚C
0
20
40
60
80
100
120
140
160
180
O
ptimum S
tar
t T
ime (M
ins)
Target Temperature Difference ˚C
TTD
8
9
7
6
5
4
3
2
1
Optimum Start Control Graph with Ti = 20
0
15
30
45
60
75
90
105
120
135
O
ptimum S
tar
t T
ime (M
ins)
Target Temperature Difference ˚C
TTD
8
9
7
6
5
4
3
2
1
Optimum Start Control Graph with Ti = 15
0
10
20
30
40
50
60
70
80
90
O
ptimum S
tar
t T
ime (M
ins)
Target Temperature Difference ˚C
TTD
8
9
7
6
5
4
3
2
1
Optimum Start Control Graph with Ti = 10
Boiler
Plus
