VOKERA Linea Installation & Servicing Instructions Manual - page 25
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7.1 CHECKING APPLIANCE OPERATION
When carrying out any repairs or servicing to the appliance, the
relevant commissioning procedure must be undertaken to ensure
the continued safe operation of the appliance. Particular attention
should be made to ensure gas tightness, water tightness, and the
electrical integrity of the appliance.
7.2 APPLIANCE MODES OF OPERATION
NOTE
There must be sufficient system water pressure (min. 0.5 bar) to
ensure the water pressure switch is activated. If there is insufficient
system pressure the pump and fan will be prevented from operating
and the low-pressure fault indicator will be displayed.
7.2.1 SELECTOR SWITCH IN THE OFF POSITION
When the boiler is in the STANDBY position, (see fig. 2) are
displayed.
Active functions
:
●
Frost-protection system
●
Pump anti-block
●
●
●
●
●
Valve actuator anti-block.
7.2.2 BOILER “ON” IN HEATING MODE
When boiler is in the
Heating position (see fig. 2) and the appliance
is active for both heating and DHW requests.
Active functions
:
●
DHW pre-heat
●
Booster function
●
Frost-protection system
●
Pump anti-block
●
●
●
●
●
Valve actuator anti-block.
7.2.4 BOILER “OFF” IN HEATING MODE
When the function switch is in the
DHW position, (see fig. 2) and the
appliance is active for DHW requests.
Active functions
:
●
TSC function
●
Frost-protection system
●
Pump anti-block
●
●
●
●
●
Valve actuator anti-block.
7.2.6 APPLIANCE FUNCTIONS
●
●
●
●
●
Comfort button:
by pressing the
button, Comfort function
enables and the correspondent symbol is displayed.
By pressing the
button, domestic hot water is supplied at the
ideal temperature for shower; the standard temperature set is
actually 40 °C.
It is possible to modify Comfort temperature from 35 °C to 45 °C
with a 0,5 °C correction. In order to change this temperature, after
selecting the function, press the button and turn the selector
A
.
The set temperature is displayed.
Comfort function avoids searching for the right mix between hot
and cold water in order to obtain the right temperature for shower.
Note
The value set is memorized by the boiler, so that, the next time
you select Comfort button, the boiler should be ready to supply
the water at the desired temperature.
●
●
●
●
●
Memory key:
by pressing the
button, Memory function
enables and the correspondent symbol is displayed.
Memory function simultaneously enables a double electronic
intelligence:
• domestic hot water intelligence
• heating intelligence.
DHW Memory
By enabling Memory button, the intelligence of the machine
begins to memorize the usage habits of the user. After only one
week, Memory function would have already learned the user’s
habits of using domestic hot water and therefore should be able
to pre-heat it for each request.
The pre-heating is performed in the half hour before the request
made in the day and at the hour memorized the week before.
Example
Thursday 15th at 7.00 a.m. a domestic hot water request is made.
Next Thursday, the 22
nd
, at 6.30 a.m., the boiler performs the pre-
heating of domestic hot water.
When the user makes the hot water request at 7.00 a.m., finds the
water already at the desired temperature.
If it is necessary to have pre-heated water besides the usual
habits, please use the Touch & Go function.
In case the boiler lacks power supply, the data memorized by
this function will be lost. When the boiler is power supplied again,
Memory function restarts to memorize the habits. In order to
benefit by the advantages off Memory function, you have to wait
for one week to pass.
CH Memory
By enabling Memory button, the boiler takes in consideration the
time that passes from ignition and after 10 minutes increases the
delivery temperature memorized with 5 °C.
Memory repeats the cycle until the room temperature set on the
room thermostat is reached or until the maximum temperature
allowed is reached.
Due to this automatic function, it is possible to select lower
delivery temperatures and at the same time to reduce the time for
reaching the set room temperature.
●
●
●
●
●
SARA function
: while adjusting the heating temperature, from
the minimum value 40°C to the maximum value 80°C, the field
where the H.T.C. system enables is met: Heating Temperature
Control (from 55°C to 65°C).
The H.T.C. system autonomously manages the delivery tempe-
rature, adapting the boiler’s operation to meet the dwelling’s real
needs.
When the heat need extends, the delivery temperature increases
allowing a faster heating of the environment.
Once the desired comfort is reached, the system restores the
delivery temperature to the value set at the beginning. All this
assures minor consumptions, minor limestone deposits in the
boiler and minor thermal ranges in the radiators.
SECTION 7 - CHECKS, ADJUSTMENTS AND FAULT FINDING
A
Comfort button
Memory button
SARA function
Fig. 38