Watts MILUX User manual

The MILUX Chrono-thermostat is a programmable digital thermostat able to control and regulate directly
your central heating (Electric, Gas, Oil) or cooling system.
It’s weekly programmable function enables power savings according to your every day life.
Features
• 7 days program ( except for daily version)
• 9 Built-in programs
• 4 User programs
• Program graphic display
• Room temperature and Time display
• Comfort / Reduced / Anti-freeze temperatures
• Temporary temperature override
• Automatic or Manual operation
• Holiday function
• Select HOT or COLD operation
• Easy wiring (2 conductor wire)
• Keypad lock function (child safety)
• Battery powered to prevent loss of program
and time during power cuts
• Battery weakness monitoring
• Battery replacement without loss of program
• Reset function
Measured temperature precision 0.1°C (or 0.2°F)
Set temperature precision 0.5°C (or 0.5°F)
Set temperature range in comfort & reduced : 5°C – 35°C (or 41°F – 95°F)
in anti-freeze : 0,5°C – 10°C (or 33°F – 50°F)
Regulation characteristics - regulation speed: 7.5 cycle per hour (8 minutes cycle)
- regulation band: 2°K of proportional band (adjusted power)
Driving element 8A RELAY (with heater and cooling devices contacts)
Connection 3 points screw connector on the rear part of the box
Batteries 3x LR6 AA 1.5V batteries

Installation & Wiring
1 Place the MILUX thermostat (A) on a plain wall away from windows and doors and not to close to the heater.
Put the connection wires (B) thru the back hole of the rear part. Use the screws (C) to mount the rear part on the wall.
2 Connect the wires to the connector (D).
Follow the connection diagram
3 Remove the plastic isolator on the batteries to power up the
MILUX. Then close the MILUX as explained in step 3 of
the batteries replacement (last page)
4 Adjust the time and follow the QUICK START instructions
DIM
Instructions

Quick Start
With keys Slide the frame inside the top MENU to change operating mode (see Modes description)
With keys change set temperature or adjust what is blinking on the screen.
With key switch between actual room temperature and set temperature or validate an adjustment.
First go to set clock and adjust time (use to adjust minutes, press OK, adjust hours, OK,adjust days, OK )
Go to program menu and select built-in week program to (or edit user program to , see
below)
Go to comfort mode and adjust comfort temperature required with keys (Default comfort temp. is 21°C)
Go to reduced mode and adjust reduced temperature required with keys (Default reduced temp. is 17°C)
Finally go to automatic mode. Your MILUX Chrono-thermostat is now working and follows the program.
Modes Description
Manual COMFORT operating mode :
Force comfort temperature operation indefinitely or for a few hours or days (see Holiday function).
By pressing + or - key the comfort temperature start to blink and can be adjusted. If you wait a few seconds the actual
room temperature reappears. MILUX regulation will now follow comfort temp.
AUTOMATIC operating mode :
MILUX Chrono-thermostat will follow automatically the program according to the actual time.
By pressing +or -key you can override the current set temperature until the next change in the program.
The segment will lit up. Use + / - keys to adjust the temporary required temperature.
At the next program change the will disappear and the program continues without any alteration.
Manual REDUCED operating mode :
Force reduced temperature operation indefinitely or for a few hours or days (see Holiday function).
By pressing + or - key the reduced temperature start to blink and can be adjusted. If you wait a few seconds the actual
room temperature reappears. MILUX regulation will now follow reduced temp.
Manual ANTI-FREEZE operating mode :
(only for Heating systems, HOT operation selected)
Force anti-freeze operation indefinitely or for a few hours or days (see Holiday function).
By pressing + or - key the anti-freeze temperature starts to blink and can be adjusted. If you wait a few seconds the
actual room temperature reappears. MILUX will keep temperature above freezing.

OFF mode: Use this mode if your Heating or cooling installation needs to be turned OFF.
MILUX Chrono-thermostat will switch off the installation and then switch itself OFF (blank screen).
User programs are saved, time is kept running and battery consumption becomes very low.
Any key will wake up the MILUX. The OK / key displays the actual room temperature.
DANGER : IN THIS MODE YOUR INSTALLATION CAN FREEZE because the MILUX is stopped.
Set CLOCK menu :
Use this menu to adjust the MILUX clock to the actual time.
use to Press
adjust minutes OK
use to Press
adjust hours OK
use to Press
adjust days OK
PROGRAM menu : By pressing + or - key the Program number start to blink,
If you select a built-in program to and press OK this program will be followed in
If you select an user program to and press OK you will enter the USER PROGRAM EDITION.

Special Features
Battery Replacement
Press on then left side
button and
pull the front panel to
remove it.
You now have access to
the
batteries.
Replace the three LR6 AA
1.5V
batteries with new ones
IMPORTANT: You have 1
minute to
change the batteries
To close the MILUX,
Place the front panel in front of
the rear part. Insert the three
contacts in the connector holes.
Then push the front panel while
keeping it parallel to the rear part.
You can help the button to click
b
y
pressin
g
sli
g
htl
y
on it.