EPH Controls CRTP2 Operating instructions

Installation and Operation Guide
Room Thermostat
CRTP2

3
Factory Default Settings
4
Specications
5
LCD Display
6
Buttons
7
Wiring
8
Mounting & Installation
11
Replacing the Batteries
14
Backlight
15
Mode Selection
13
Adjusting the Target Temperature
13
Locking the Keypad
Table of contents
Installation Instructions
Operating Instructions
16
Setting the Date, Time and Programming Mode
16
Holiday Mode
17
How your Programmable Thermostat works
18
Factory Program Setting
19
Programming Modes

25
Optimum Start Control (OS)
23
Menu Function P0 1 Operating Mode
24
Normal Mode (Nor)
27
Time Proportional Integral Mode (TPI)
30
P0 2 Setting High & Low Limits
31
P0 3 Hysteresis HOn & HOFF
21
Temporary Override / Permanent Override
32
P0 4 Calibrate
22
Boost Function
33
Resetting the Thermostat
20
Adjust the Program Setting in 5/2 Day Mode

Installation Instructions
Battery operated programmable Room Thermostat

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EPH Controls Ltd.
Factory Default Settings
High and Low Temp. limitation: O
Keypad lock: O
Operating mode: Normal
Temperature indicator: ˚C
Frost protection: On (5˚C)
HYS On: 0.4˚C
HYS OFF: 0.0˚C
Daylight Saving Time (DST): On
Note:
Frost protection is built into this thermostat.
It will only be activated when the thermostat is in OFF position and the temperature
reaches 5˚C.

4CRTP2
Specications
Contacts: Volt Free
Power supply / Input: 2 x AA Alkaline batteries
Power consumption: Operating 30mW
Standby <0.5mW
Temperature range: 5…35˚C
Ambient temperature: 0…45˚C
Ambient admissible humidity: 5-95%RH
Contact rating: 8(3)A
Dimensions: 91 x 91 x 26mm
Internal Temperature sensor: NTC 100K
Backlight: White
IP rating: IP20
Pollution degree: 2
Hysteresis (Switching dierential): Adjustable from 0 to 1°C
0.1°C increments
Automatic action: 1C

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EPH Controls Ltd.
LCD Display
[1]
[8]
[9][11] [9]
[3]
[4]
[2]
[5]
[6]
[7]
[13]
[12]
[10]
MonSet room temp Tue Wed Thu Fri sat sun
holiday to from auto off man hi lo limit
[1] Displays when setting target temperature.
[2] Displays current room temperature.
[3] Displays current day of the week.
[4] Displays when batteries need to be replaced.
[5] Displays current / target temperature.
[6] Displays when the thermostat is calling for heat.
[7] Displays when keypad is locked.
[8] Displays when setting HIGH and LOW temperature limit.
[9] Displays current time and date.
[10] Displays current operating mode.
[11] Displays when setting
holiday mode.
[12] Displays when
thermostat is in
boost mode.
[13] Displays current
time program.

6CRTP2
Buttons
OK Button
Time
Button
+1h
Button
Down
Button
Up
Button
Menu button
Reset button

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EPH Controls Ltd.
Wiring
OFF
ON
321
COM
Terminal Connections
Terminal 1 OFF - N/C Normally closed connection
Terminal 2 ON - N/O Normally open connection
Terminal 3 COM - Common connection

8CRTP2
Mounting & Installation
Caution!
Installation and connection should only be carried out by a qualied person.
Only qualied electricians or authorised service sta are permitted to open the
thermostat.
If the thermostat is used in a way not specied by the manufacturer, its safety
may be impaired.
Prior to setting the thermostat, it is necessary to complete all required settings
described in this section.
Before commencing installation, the thermostat must be rst disconnected
from the mains.
This thermostat can be mounted in the following ways:
1) Directly mounted on wall
2) To a recessed conduit box
3) To a surface mounting box

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EPH Controls Ltd.
1) Remove the thermostat from its packaging.
2) Choose a mounting location so that the thermostat can
measure the room temperature as accurately as possible.
- Mount the thermostat 1.5 metres above the oor level.
- Prevent direct exposure to sunlight or other heating /
cooling sources.
3) Use a philips screwdriver to loosen the screw on the bottom
of the thermostat. The thermostat is hinged and can be
opened 90 degrees.
4) Wire the thermostat according to the diagram on page 7.
5) Screw the backplate onto a back box or directly to the surface.
6) Close the front housing and tighten the fastening screw on the
bottom of the thermostat.

10 CRTP2
90
90
26
45 113
b)

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EPH Controls Ltd.
1) is displayed when the batteries need to be replaced.
2) Push in the battery compartment to release it.
3) Replace the batteries with 2 x AA Alkaline batteries.
4) Re-insert the battery compartment. Push it until it clicks into place.
Replacing the batteries

Battery operated programmable Room Thermostat
Operating Instructions

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EPH Controls Ltd.
Press to increase the target temperature from 5-35˚C.
Press or wait 5 seconds. The target temperature is now saved.
Press to decrease the target temperature from 5-35˚C.
Press or wait 5 seconds. The target temperature is now saved.
Adjusting the Target Temperature
Locking the Keypad
To lock the thermostat, press and hold and for 10 seconds.
will appear on the screen. The buttons are now disabled.
To unlock the thermostat, press and hold and for 10 seconds.
will disappear from the screen. The buttons are now enabled.

14 CRTP2
There are two settings for selection.
‘AUt’ The backlight is on for 10 seconds when any button is pressed.
‘OFF’ The backlight is permanently o.
Use and to change the mode between‘AUt’ and ‘OFF’.
Press to conrm selection and to return to normal operation.
Backlight AUTO
To adjust the backlight setting, press and hold for 10 seconds.
‘AUt’ appears on the screen.

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EPH Controls Ltd.
AUTO
There are three modes available for selection.
OFF means the thermostat is permanently o.
MAN or manual means that the thermostat is permanently on.
AUTO means that the thermostat will operate according to the times
and temperatures that have been pre-programmed.
Press to change between ‘AUTO’, ‘ OFF’ & ‘MAN’.
The current mode will be underlined on the screen.
Press again to scroll through the three modes.
Press or wait 5 seconds to conrm.
When in the Manual mode the thermostat will display the current room
temperature and the word ‘MAN’.
When in the OFF mode the thermostat will display the current room
temperature and the word ‘OFF’.
When in the AUTO mode the thermostat will display the current room
temperature, the number of the current program and the word‘AUTO’.
Mode Selection

16 CRTP2
Press once, the year will begin ashing.
Press and to adjust the year. Press .
Repeat this for the month, day, hour and minute. Press .
Press and to adjust from 5/2d to 7d or 24h mode. Press .
Press and to turn DST (Day Light Saving time) On or O.
Press , the thermostat will return to normal operation.
Setting the Date, Time and Programming Mode
Holiday mode will switch the thermostat o but will have frost
protection enabled for the duration of the holiday period.
Press and hold for 5 seconds.
‘HOLIDAY FROM’ will appear on the screen.
Press , and to set time for holiday mode to begin.
‘HOLIDAY TO’will appear on the screen.
Press , and to set time for holiday mode to end.
The thermostat will switch o for the holiday period.
Press to cancel the holiday function.
Holiday Mode

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EPH Controls Ltd.
When the thermostat is in the AUTO mode, it will operate according
to the times and temperatures that have been programmed. The user
can select from 6 dierent programs per day, each with a time and a
temperature.
There is no OFF time, only a higher and a lower target temperature.
If the user wants the thermostat to be OFF at a certain time, set the
temperature for this time to be low. The thermostat will turn ON if the
room temperature is lower than the target temperature for the current
period.
Example: If P1 is set to be 21˚C at 6am, and if P2 is set to be 10˚C at
8am, the thermostat will look for the temperature to be 21˚C between
6am and 8am.
How your Programmable Thermostat works

18 CRTP2
Factory Program Setting 5/2d
5/2 Day
P1 P2 P3 P4 P5 P6
Mon-Fri
06:30 08:00 12:00 14:00 17:30 22:00
21˚C 10˚C 10˚C 10˚C 21˚C 10˚C
Sat-Sun
08:00 10:00 12:00 14:00 17:30 23:00
21˚C 10˚C 10˚C 10˚C 21˚C 10˚C
7 Day
P1 P2 P3 P4 P5 P6
Mon-Fri
06:30 08:00 12:00 14:00 17:30 22:00
21˚C 10˚C 10˚C 10˚C 21˚C 10˚C
Sat-Sun
08:00 10:00 12:00 14:00 17:30 23:00
21˚C 10˚C 10˚C 10˚C 21˚C 10˚C
24 Hour
P1 P2 P3 P4 P5 P6
Everyday
06:30 08:00 12:00 14:00 17:30 22:00
21˚C 10˚C 10˚C 10˚C 21˚C 10˚C