6
of 12
hand wheel firmly and turn to the left to remove the
sight glass.
Do not use any tools when removing the sight
glass! Risk of breakage!
Unscrew the sight glass quickly and removed, toge-
ther with the spring located inside. The flowmeter
locks automatically once the sight glass and spring
have been removed. In this condition, there may
be some slight water loss from the valve. Clean the
sight glass quickly and screw together again in the
opposite order.
8. Room Temperature Controller
8.1 Features
■
One line text display for simplified operation
■
Back light
■
Real time clock (setting of year, month, day, time)
■
Automatic Summer- Winter time change over
■
Max 9 events per day (each day independently)
■
Pre-set and adjustable programs
■
Optimum-Start
■
Arm chair programming (with display unit removed)
■
OFF-Function, key
to be pressed for 10 sec.
■
Holiday-Mode (date from - until can be set)
■
Timer (Party) specific temperature for configurable
duration
■
Energy consumption display (heating on time *
cost) for last 2 days, -week, -month, -year
■
Energy cost per hour configurable
■
Frost protection
■
Range limits for adjusting max and min temp.
■
Access protection
■
Operating language can be selected
■
Valve protection
■
Adaptation to valves normally open or normally
closed
8.2 Operation Instructions
The most important functions at a glace
Pre-set programs
There are 3 pre-set time/temperature programs in
the controller. Pre-set program 1 is the default (see
next page). Therefore, if pre-set program 1 is the
best program to suit the application, there will be no
need to change the time/temperature settings on
the device.
Actual day
Actual room
temperature
Calling for heat
(blinks if
detached from
power module
or there is no
mains power)
Helping text
Mode = AUTO
Time = 14:31
Keys
1
2
3
4
–
+ OK
9
8
Indicator unit
Sight glass with
scale
Spindle
Valve body
Valve cone
Impact pane
Valve bottom part
