EPH Controls EDBS Operating instructions

Installation and Operation Guide
Electronic Cylinder Thermostat
EDBS

Installation Instructions
3
Specications
2
Factory Default Settings
5
Wiring
6
Mounting & Installation
Operating Instructions
Table of contents
4
LCD Symbol / Button Description
7
Installation Drawing
11
Legionella Function
18
High & Low Temperature Limits
19
Hysteresis Function
21
Calibrating the Thermostat
10
Setting the Date & Time
9
Resetting the High Limit Thermostat
9
Adjusting the Setpoint Temperature
16
Backlight Mode Selection
14
Auto Lock Function
22
Legionella Check Function
25
High Limit Cut Out Temperature
27
Factory Reset Function

Installation Instructions

2EDBS
RFRP-OT Room Thermostat
Factory Default Settings
Temperature indicator: ˚C
Clock: 24 hours
Day light saving: On
Legionella function: O
Legionella set temperature: 65˚C
Auto lock: O
Backlight: Auto
Maximum temperature setting: 80°C
Minimum temperature setting: 10°C
Hysteresis On: 5°C
Hysteresis O: 0°C
High Limit Cut Out: 85˚C - Not adjustable

3
Electronic Cylinder Thermostat
Specications
Power supply: 230Vac 50-60Hz
Power consumption: 1.8W
Temperature control range: 10…80°C
Ambient temperature: 0…45°C
Admissible ambient humidity: 5-95%RH
Dimensions: 100 x 105 x 42.5 mm
Contact rating: 10A
Battery: LIR 2032
Backlight: Blue
IP rating: IP20
Pollution degree: Pollution Degree 2
Rated impulse voltage: 4kV
Automatic action: 1C
Temperature sensor: NTC 10K @ 25˚C
Temperature indication: ˚C

4EDBS
LCD Symbol / Button Description
Button
LCD Display
Day of the week
Current Day
and Month Legionella Function
is activated
Keypad is locked
Current Time
(24 Hr mode)
Current probe temperature
Thermostat
is calling for heat
Handwheel High Limit
Thermostat
Reset Button

5
Electronic Cylinder Thermostat
Terminal Connections
N/C Heat OFF
N/O Heat ON
LLive in from Mains Supply
NNeutral in from Mains Supply
COM Switch Live
N/C N/O N COM L
200-240Vac
50Hz-60Hz
Heat
ON
Switch Live
from
Programmer
Heat
OFF
Wiring
Caution!
Mains voltage output only

6EDBS
The EDBS is designed to t directly onto a hot water cylinder pocket.
1) Loosen the 3 screws on the back housing of the thermostat.
2) Remove the back housing.
3) Wire the thermostat according to the Wiring Diagram on page 5.
4) Replace the back housing and tighten the 3 screws.
5) Insert both cable sensors into the pocket.
6) Tighten the 3 xing screws to ensure the thermostat is secured on
the pocket.
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
the section.

7
Electronic Cylinder Thermostat
Installation Drawing
1
2 3 4
5 6
45

Operating Instructions

9
Electronic Cylinder Thermostat
This thermostat consists of a control thermostat and a high limit
thermostat. The high limit thermostat has a maximum permissible
temperature of 85°C.
If the high limit temperature is exceeded, the temperature will
continuously ash on the screen to alert you that a manual reset is
required.
Manual reset is only possible after the temperature drops below 85˚C.
To Reset the high limit thermostat
1) Remove the handwheel from the thermostat.
2) Note the location of the reset button underneath the handwheel.
3) Reset the thermostat by pressing the reset button.
Rotate to adjust the temperature setpoint.
Press to conrm.
Resetting the High Limit Thermostat
Adjusting the Temperature Setpoint

10 EDBS
Double press the handwheel to enter the menu.
will appear.
Press once.
Rotate to select the year. Press to conrm.
Rotate to select the month. Press to conrm.
Rotate to select the day. Press to conrm.
Rotate to select the hour. Press to conrm.
Rotate to select the minute. Press to conrm.
Rotate to select daylight saving. Press to conrm and to
return to the menu.
Rotate to exit the menu .
Press to conrm.
Alternatively, the menu will be exited after 20 seconds.
Setting the Date & Time

11
Electronic Cylinder Thermostat
Legionella Function
Legionella bacteria can thrive in hot water cylinders that have a water
temperature of between 20°C and 50°C.
The purpose of the Legionella function on this thermostat is to remove
any threat of Legionella bacteria surviving by raising the temperature of
the hot water in the cylinder above 60°C for a specic period of 1 hour.
The legionella function on this thermostat will call to heat the hot water
to a user selected temperature of between 60°C & 70°C.
Default is set at 65˚C.
The Legionella function on this thermostat oers the user the following:
1) Operation a maximum of once per day at a time chosen by the user.
2) Operation from one to seven days a week.
3) Temperature selection of between 60°C to 70°C.
4) Temperature must reach the temperature required for a period of
one hour.
It is best practice to activate the legionella function at a time of low or
no demand on the hot water. For example: 3 a.m.
When the legionella function is active the symbol will appear.

12 EDBS
Legionella Function (Continued)
Setting the legionella function O
Double press the handwheel to enter the menu.
Rotate to select the Legionella function. (Menu P02)
will appear.
Press once. “O” will appear on the screen.
Rotate to turn the Legionella function“On”.
Press once to conrm. 65˚C will ash on the screen.
Rotate to select the desired temperature of between 60°C & 70°C.
Press once to conrm. “03:00” will ash on the screen.
Rotate to select the start time.
Press once to conrm.

13
Electronic Cylinder Thermostat
“MON” will ash. To select “MON”, rotate clockwise once.
Rotate anti-clockwise once to skip “MON”.
You can then choose to select or skip the other days of the week.
Turn clockwise to Select or anti-clockwise to Skip.
Press once to conrm and to return to the menu.
Rotate to exit the menu .
Press to conrm.
Alternatively, the menu will be exited after 20 seconds.

14 EDBS
Auto Lock Function
The Auto Lock function allows you to set an automatic handwheel
lock for the thermostat.
When activated, the thermostat will automatically lock if is not
rotated or pressed for 5 minutes.
You can lock or unlock the thermostat by pressing for 10 seconds.

15
Electronic Cylinder Thermostat
Setting the Auto Lock Function O
Double press the handwheel to enter the menu.
Rotate to select the Auto lock function. (Menu P03)
will appear.
Press once. “O” will appear on the screen.
Rotate to select “On”.
Press once to conrm and to return to the menu.
Rotate to exit the menu .
Press to conrm.
Alternatively, the menu will be exited after 20 seconds.
To unlock the thermostat, press and hold for 10 seconds.
If Auto Lock function is not selected, it is still possible to lock or
unlock the thermostat by pressing and holding for 10 seconds.

16 EDBS
Backlight Mode Selection
There are 3 backlight settings available for selection:
AUTO: Backlight stays on for 10 seconds after is pressed or rotated.
ON: Backlight is permanently On
OFF: Backlight is permanently O

17
Electronic Cylinder Thermostat
Setting the backlight: AUTO
Double press the handwheel to enter the menu.
Rotate to select the Backlight function. (Menu P04)
will appear.
Press once. “Auto” will appear on the screen.
Rotate to select “On” or “O”.
Press once to conrm and to return to the menu.
Rotate to exit the menu .
Press to conrm.
Alternatively, the menu will be exited after 20 seconds.

18 EDBS
High & Low Temperature Limits
This function allows you to set the maximum and minimum
temperatures for the thermostat.
Setting the Hi Lo function: High 80°C Low: 10°C
Double press the handwheel to enter the menu.
Rotate to select the Hi Lo function. (Menu P05)
will appear.
Press once. “Hi” will appear on the screen.
Rotate to select the maximum temperature.
Press once to conrm. “Lo”will appear on the screen.
Rotate to select the minimum temperature.
Press once to conrm and to return to the menu.
Rotate to exit the menu .
Press to conrm.
Alternatively, the menu will be exited after 20 seconds.