Installation instructions S-HR series page 14
7Control of the unit
The unit is provided with a self-adjusting control called
the Control Tower. This control takes over a large part
of the manual adjustments which means putting the unit
into operation has been extensively simplified. After
plugging the plug into the wall socket the unit will not
undertake any operating action and no operating lamps
will be lit.
On the display the relevant status will be shown. Rea-
ding out of the status can be done in two ways.
The first way is a simple read out called the Good status.
The unit will only show the
indication. During this
read out the unit can be in normal operation without this
showing in any other way. If it is necessary to show a
report it will be shown on the display.
The second way is the technical way which shows a
more extensive read-out with, among others, the
position in which the unit is active with the flow water
temperature and the water pressure of the central
heating system.
The second level is reached from the
indication
after pressing the STEP key for 5 seconds. Returning to
the
indication is done the same way.
Only when activating the operating program pump
circulating after filling up the installation, will the
automatic venting program start as standard after
pressing the
PC program key. This automatic
venting program takes 15 minutes and stops
automatically. After this the unit will function for the
activated part.
In case of a heat requirement, which arises for central
heating or hot water, a certain flow water temperature
will be calculated. This calculated water temperature is
called the T-set value. This value becomes active in
case of a demanding room thermostat after which the
unit power will be adjusted. With a recently started unit
a build-up delay of the T-set valve is active. The main
purpose of this is to prevent the unit going into operation
at full power due to which disturbing noises and
unnecessary temperature peaks can arise. In the case
of heat requirement from the hot water supply the T-set
valve on the central heating return water temperature is
adjusted. Depending on the amount of domestic water
which is withdrawn from the calorifier, the central
heating return water temperature, which adjusts the
load of the unit, will vary.
Each time the mains power supply to the
boiler is broken, the automatic venting pro-
gram will re-start once there is power to the
boiler.
7.1 Explanation of the function keys
Key functions from the
and the extensive
indication are:
-
Central Heating program key, see chapter
10.1;
-
Hot Water program key, see chapter 10.2;
-
PC program key, adjusts the pump to continuous
water circulation in the central heating system, or
according to the pump overrun times on the relevant
programs;
- Mode key, after briefly pressing, a selection of the
data chapters can be retrieved. After pressing for 5
seconds it is possible to enter the code as described
in chapter 10.3;
- Step key, after briefly pressing, the water pressure
can be retrieved and pages per chapter can be
retrieved. After pressing for 5 seconds it switches
from
indication to technical indication and the
other way round;
- Reset key, after briefly pressing, for:
unlocking errors;
ending the access code;
ending the automatic venting program, only when
the access code is entered and the reset key is
pressed briefly.
After pressing for 5 seconds an operating stop is
made, for example, for activating the automatic
venting program.
Other key functions from the other indications are:
-
Central Heating key then has the + function;
-
Hot Water key then has the - function;
-
PC key then has the store function, which means
that by means of this key a modified setting is
confirmed;
- Step key for scrolling in a data chapter.
