Protherm Tiger 24 (12) KTZ Operating And Installation Manual - Control
Supplied By www.heating spares.co Tel. 0161 620 6677
11
rature of the water in the system) which
will be capable of covering thermal losses
of the building even in low outdoor tempe-
ratures. We recommend selecting a tem-
perature in the 60 – 80 °C range.
Using the boiler with equithermal
control
The boiler changes the HeW temperature
as the outdoor temperature changes.
Please note: An outdoor temperature
sensor must be connected! The outdoor
sensor is to be located on the building’s
coldest wall (north or north-west) about
2.5 – 3 m above the ground. No false heat
sources from open windows or ventilation
shafts, or sunshine may affect the sensor.
When selecting a heating curve it applies
that curves with a lower number are sui-
table for buildings with good thermal insu-
lation and a higher thermal gradient and
vice versa.
The heating curves diagram is used as ini-
tial information. More precise setting must
be done by monitoring outdoor and indoor
temperature over several days.
Select E5 for the initial system setting.
During setting all the radiator valves must
be open, thermostatic valves must be set
to maximum temperature, doors and win-
dows must be closed.
Setting the curve steepness or reference
temperature shift is done in small incre-
ments and prior to evaluating the chan-
ge made a period of about. 2 hours must
elapse. For setting purposes a greater flu-
ctuation of outdoor temperature is better,
and the final setting is done when the out-
door temperature drops below 0 °C.
Setting procedure:
1. Select “HeW temperature” mode and
check that the SUMMER function is not
on (symbol --).
A certain temperature must be set (the
temperature value does not affect the
equithermal mode).
2. Select “equithermal mode – curve stee-
pness” and set symbol E5 – see pg. 7.
3. Select “equithermal mode – reference
temperature shift” and set symbol (P5).
4. Set the boiler to the initial status.
After several days of operation (when the
building is heated) make changes to the
curve steepness, as necessary:
5. If the room temperature does not chan-
ge substantially in reaction to changes of
outdoor temperature, the curve selection
is correct. The temperature can be set to
a higher or lower value by shifting the re-
ference temperature – see “Controls and
signals – equithermal mode – reference
temperature shift”.
Note:
If the room temperature changes
substantially in reaction to changes of out-
door temperature, i.e. the indoor tempera-
ture rises when the outdoor temperature
drops, select a heating curve with a lower
number, and vice versa.
Operation with equithermal control
and a room control unit
Equithermal control is supplemented with
the room control unit by time control and
reduction (e.g. night) of heating.
Setting procedure:
• set the equithermal control according to
the preceding point;
• Connect the room control unit to the boi-
ler (remove the jumper from the connecti-
on terminal) and set it so that during the
comfortable temperature period the requi-
red temperature is set about 5 °C higher
than is achieved by equithermal control.
During the heating reduction period (du-
ring the night or absence) the actually
required temperature is set on the control
unit – must always be at least ca. 3 °C
lower than the actual comfortable tempe-
rature.
Important:
The room control unit must be
installed by an authorized service.