EPH CONTROLS CRTP2 Room Thermostat Installation Guide

Installation Guide for EPH CONTROLS models including: CRTP2 Room Thermostat, CRTP2, Room Thermostat, Thermostat

Operation Guide Room Thermostat

Installation and Operation Guide Room Thermostat

File Info : application/pdf, 36 Pages, 719.45KB

CRTP2 Datasheet

CRTP2
Room Thermostat Installation and Operation Guide

Table of contents

Installation Instructions

Factory Default Settings

Specifications

LCD Display

Buttons

Wiring

Mounting & Installation

Replacing the Batteries

Operating Instructions

Adjusting the Target Temperature

Locking the Keypad

Backlight

Mode Selection

Setting the Date, Time and Programming Mode

Holiday Mode

How your Programmable Thermostat works

Factory Program Setting

Programming Modes

Adjust the Program Setting in 5/2 Day Mode

Temporary Override / Permanent Override

Boost Function

P0 1 Operating Mode

Normal Mode (Nor)

Optimum Start Control (OS)

Time Proportional Integral Mode (TPI)

P0 2 Setting High & Low Limits

P0 3 Hysteresis HOn & HOFF

P0 4 Calibrate

Resetting the Thermostat

Battery operated programmable Room Thermostat Installation Instructions

Factory Default Settings

High and Low Temp. limitation: Keypad lock: Operating mode: Temperature indicator: Frost protection: HYS On: HYS OFF: Daylight Saving Time (DST):

Off Off Normal °C On (5°C) 0.4°C 0.0°C 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.

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Specifications

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

Switch output:

SPDT Volt Free

Dimensions:

91 x 91 x 26mm

Internal Temperature sensor: NTC 100K

Backlight:

White

IP rating:

IP20

Pollution degree:

Hysteresis (Switching differential): Adjustable from 0 to 1°C

0.1°C increments

Automatic action:

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LCD Display

[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

[2]

[3]

holiday mode.

[12] Displays when

[1] Set room temp Mon Tue Wed Thu Fri sat sun

thermostat is in

[4]

boost mode.

[13]

[5]

[13] Displays current

[6]

time program.

[12]

[7]

holiday to from auto off man hi lo limit

[11]

[9]

[10]

[9]

[8]

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Buttons

Reset button

Menu button

Time +1h Down Up Button Button Button Button

OK Button

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Wiring

321
ON COM OFF

Terminal Connections

Terminal 1 Terminal 2 Terminal 3

OFF - N/C Normally closed connection COM - Common connection ON - N/O Normally open connection

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Mounting & Installation
Caution!
Installation and connection should only be carried out by a qualified person.
Only qualified electricians or authorised service staff are permitted to open the thermostat.
If the thermostat is used in a way not specified 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 first 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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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 floor 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.

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45 113

Replacing the batteries
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.

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Battery operated programmable Room Thermostat Operating Instructions

Adjusting the Target Temperature

Press Press Press Press

to increase the target temperature from 5-35°C. or wait 5 seconds. The target temperature is now saved. to decrease the target temperature from 5-35°C. or wait 5 seconds. The target temperature is now saved.

Locking the Keypad

To lock the thermostat, press and hold and seconds.

for 10

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.

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Backlight

AUTO

There are two settings for selection.
`AUt' The backlight is on for 10 seconds when any button is pressed.

`OFF' The backlight is permanently off.

To adjust the backlight setting, press and hold `AUt' appears on the screen.

for 10 seconds.

Use and to change the mode between `AUt' and `OFF'.

Press to confirm selection and to return to normal operation.

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Mode Selection

AUTO

There are three modes available for selection. OFF means the thermostat is permanently off. 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 confirm.
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'.

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Setting the Date, Time & Programming Mode
Press once, the year will begin flashing.

Press and to adjust the year. Repeat this for the month, day, hour and minute.

Press . 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 Off. Press , the thermostat will return to normal operation.

Holiday Mode
Holiday mode will switch the thermostat off 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 off for the holiday period. Press to cancel the holiday function.

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How your Programmable Thermostat works
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 different 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.

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Factory Program Setting

Mon-Fri Sat-Sun

P1 06:30 21°C 08:00 21°C

Mon-Fri Sat-Sun

P1 06:30 21°C 08:00 21°C

Everyday

P1 06:30 21°C

P2 08:00 10°C 10:00 10°C

5/2 Day P3
12:00 10°C 12:00 10°C

P2 08:00 10°C 10:00 10°C

7 Day P3
12:00 10°C 12:00 10°C

P2 08:00 10°C

24 Hour P3
12:00 10°C

5/2d

P4 14:00 10°C 14:00 10°C

P5 17:30 21°C 17:30 21°C

P4 14:00 10°C 14:00 10°C

P5 17:30 21°C 17:30 21°C

P4 14:00 10°C

P5 17:30 21°C

P6 22:00 10°C 23:00 10°C
P6 22:00 10°C 23:00 10°C
P6 22:00 10°C

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Programming Modes

The CRTP2 Room Thermostat has the following programming modes available:

5/2 Day mode

Programing Monday to Friday as one block and Saturday and Sunday as a 2nd block.

Each block can have 6 different times and target temperatures.

7 Day mode

Programming all 7 days individually with different times and target temperatures.

24 Hour mode

Programming all 7 days as one block with the same times and target temperatures.

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.

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Adjust the Program Setting in 5/2 Day Mode
Press twice. Programming for Monday to Friday is now selected. Press and to adjust the P1 time. Press . Press and to adjust the P1 temperature. Press . Repeat this process to adjust P2 to P6 times & temperatures. Press . Programming for Saturday to Sunday is now selected. Press and to adjust the P1 time. Press . Press and to adjust the P1 temperature. Press . Repeat this process to adjust P2 to P6 times & temperatures. Press . Press to return to automatic mode. While in programming mode, pressing will jump to the next day (block of days).

CRTP2

Temporary Override
When in AUTO mode, press or to adjust the target temperature. Press or wait 5 seconds, the thermostat will operate to this new target temperature until the next switching time.

Permanent Override
Press to select `MAN' or manual mode (Permanent Override). Press . Press or to adjust the target temperature. Press or wait 5 seconds, the thermostat will operate to this target temperature. To cancel permanent override, press until the `AUTO' or `OFF' mode are selected.

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Boost Function
The thermostat can be boosted to a specific temperature for 1, 2 or 3 hours while the thermostat is operating in all modes except for holiday mode.
Press 1, 2 or 3 times, the end time of the boost program will appear flashing on the screen.
If you press the temperature will now flash. You can adjust the target temperature by pressing the or .
Press or wait for 5 seconds for the boost to activate.
`BOOST TO' will now be displayed on the screen with the end time for the boost program.
Press again to deactivate the boost, the thermostat will revert to its previous operating mode.

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Menu
This menu allows the user to adjust additional functions. To access the menu, press and hold & together for 5 seconds.

P01 Operating Mode (Normal / Optimum Start / TPI)
There are three settings for selection, Normal, Optimum Start or TPI mode. The default setting is Normal. Press and hold & together for 5 seconds. `P01' will appear on the screen. Press to select. Use and to select between: nOr (Normal mode) OS (Optimum start mode) tPi (Time proportional integral mode) Press to confirm the mode.

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P01 Operating Mode continued
Normal Mode (Nor) When the temperature falls below the target temperature, will appear and the thermostat will activate the demand for heat. When the temperature rises above the target temperature, will disappear, and the thermostat will cancel the demand for heat.

Temp 22°C 21°C 20°C 19°C 18°C 17°C

Graph (24.1): Normal Mode (On / Off Control) Target Temperature

80 100 Time Minutes

CRTP2

Optimum Start Control (OS) When the thermostat is in Optimum Start mode, it will try to reach the target temperature by the start of the next switching time. This is done by setting the Ti (time interval) on the thermostat in this menu to 10, 15, 20, 25 or 30 minutes. This will allow the thermostat 10 to 30 minutes to increase the room temperature by 1°C.
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.

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P01 Operating Mode continued

Optimum Start Control (OS) Continued

Optimum Start Time (Mins)

Optimum Start Control Graph with Ti = 20 0 20 40 60 80
100 120 140 160 180
9 87654321 Target Temperature Difference °C TTD
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.

Optimum Start Time (Mins)

Optimum Start Control Graph with Ti = 15 0 15 30 45 60 75 90
105 120 135
987654321 Target Temperature Difference °C TTD
Optimum Start Control Graph with Ti = 10 0 10 20 30 40 50 60 70 80 90 987654321 Target Temperature Difference °C TTD

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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 Bandwith section, TPI will start to affect the thermostats operation. The thermostat will turn on and off as it gains heat so that it doesn't overshoot the target by too much. It will also turn on if the temperature is falling so it doesn't undershoot the target which will leave the user with a more comfortable level of heat.
There are 2 settings that will affect the thermostats operation
1. The number of heating cycles per hour
2. The Proportional Bandwith

CyC Number of Heating Cycles per hour

6 Cycles

This value will decide how often the thermostat will cycle the heating on and off when trying to achieve the target temperature. You can select 2/3/6 or 12.

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P01 Operating Mode continued
Time Proportional Integral Mode (TPI) Continued
Pb -Proportional Bandwith 2°C 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

Graph (28.1): TPI Control

Target Temperature Proportional Bandwidth

100 Time Minutes

Heating On

Heating Off

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Once TPI mode is selected, `CYC' and `06' will appear on the screen.

Use

and to select from 2,3,6 or 12.

Press to confirm.

`P Band' and `2.0' will appear on the screen.

Use

and to select from 1.5 to 3.0.

Press to confirm.

Press to return to normal operation.

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P02 Setting High & Low Limits Hi 35°C Lo 5°C

This menu allows the installer to change the minimum and maximum temperatures that the thermostat can be set at.

To access this setting, press and hold & seconds.

together for 5

`P01' will appear on the screen. Press the screen. Press to select.

until `P02' appears on

`HI LIMIT' will appear on the screen, the temperature will begin to flash.

Use and to select the high limit for the thermostat.

Press to confirm.

`LOW LIMIT' will appear on the screen, the temperature will begin to flash.

Use and to select the low limit for the thermostat.

Press to confirm. Press to return to normal operation.

When this setting is enabled, `LIMIT' will appear permanently on the screen.

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P03 Hysteresis HOn & HOFF HOn 0.4°C HOFF 0°C

This menu allows the installer to change the switching differential of the thermostat when the temperature is rising and falling.

If `HYS ON' is set at 0.4°C and the setpoint is 20°C, then the thermostat will switch on when the temperature drops below 19.6°C.

If `HYS OFF' is set at 0.2°C and the setpoint is 20°C, then the thermostat will switch off when the temperature reaches 20.2°C.

To access this setting, press and hold & seconds.

together for 5

`P01' will appear on the screen. Press until `P03' appears on the screen. Press . `HOn' will appear on the screen and the differential temperature will begin to flash.

Use & to select the `HOn' temperature, press to confirm.

`HOFF' will appear on the screen and the differential temperature will begin to flash.

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P03 Hysteresis HOn & HOFF continued

Use

& to select the `HOFF' temperature.

Press to confirm.

Press to return to normal operation.

P04 Calibrate

This menu allows the installer to calibrate the temperature of the thermostat.

To access this setting, press and hold & seconds.

together for 5

`P01' will appear on the screen.

Press

until `P04' appears on the screen.

Press

to select.

`CALI' and the actual temperature will appear on the screen.

Press

and to calibrate the temperature.

Press

to confirm the temperature.

Press

to return to normal operation.

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Resetting the Thermostat

To reset the thermostat to factory settings, locate the button on the left hand side of the thermostat.

reset

Press the reset button and release it.

`RST' will appear and `NO' will flash on the screen.

Press . `YES' will flash on the screen.

Press to confirm. The thermostat will restart and revert to its factory settings.

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EPH Controls IE
technical@ephcontrols.com www.ephcontrols.com/contact-us +353 21 471 8440 Cork. T12 W665
EPH Controls UK
technical@ephcontrols.co.uk www.ephcontrols.co.uk/contact-us +44 1933 322 072 Harrow, HA1 1BD

Operation Guide Room Thermostat

References