Trianco TRISTAR OPTIMA JUNIOR K CB, Руководство по установке, Страница: 34 / 44

34
To prevent damage to the appliance during very cold
weather, it is advisable to fit an external frost
thermostat to the installation, which will supersede the
central heating and hot water settings to temporarily
activate the boiler should the temperature drop too
low.
When activated, the comfort function will enable the
boiler to keep a permanent store of heated water
within the appliance. As such, this will improve water
delivery times, providing domestic hot water at a
quicker than usual rate.
To activate the comfort function, press button ‘ P ’. The
yellow LED ( item M , fig 42 ) will illuminate. To
deactivate, press this once more.
Please note that when activated, the comfort function
will cause the boiler to operate at times outside of
those specified by the user.
The yellow LED (‘ M ’) will also be illuminated when the
DHW mode is active on the system (SB) model.
After an appliance malfunction, the boiler will enter a
lock-out state (indicated by the illumination of LED
‘
H ’). Restart the boiler by pressing reset button ‘ D ’.
Should it attempt to fire and fail for a second time,
refer to the fault-finding guide (
section 13 , page 39 ).
The user should be informed that they should
periodically check the system pressure on gauge ‘
S ’
to the pressure set. If this has dropped, reset the
pressure to the correct setting by gradually opening
the filling loop on the underside of the boiler. Close
the loop once the desired pressure has been reached.
Should the system pressure fall too low, the
multifunction display will show the error code ‘
E 02 ’. If
this should occur, once the pressure has been
returned to normal, switch the boiler off then on, using
ON/OFF button ‘ A ’.
If during normal operation the system pressure drops
on a regular basis, in most cases there will be a
heating system fault, rather than a boiler fault. For
details of other fault codes and general fault-finding,
refer to
section 13 .
After 21 hours of inactivity, the pump will activate for
15 seconds. During this time, the diverter valve will
change position to DHW mode, before returning to
normal.
To ensure the safe and efficient operation of the
appliance, the boiler must be serviced annually, by a
CORGI-registered engineer. Failure to do so will
invalidate the appliance guarantee.
To clean the appliance casing, switch off the boiler and
isolate the power supply. Wipe with a damp cloth. Do
not use detergents, harsh liquids, or other toxic
products.
To guarantee production of domestic hot water and the
operation of the frost thermostat and comfort function
at all times, it is recommended that the boiler is not
switched off during normal use via the
ON/OFF button
‘ A ’. Instead, turn off the programmer, or deactivate the
heating via the control knob ‘ B ’.
If the appliance must remain off for any long periods of
time during very cold weather, it is advisable to
completely drain the heating system. This operation is
essential if there are no antifreeze additives in the
system.
The boiler heat exchanger is constructed from
aluminium alloy. Only use additives in the heating
system if it is strictly necessary, and if such additives
are compatible with this type of material. If in doubt,
please contact the additive manufacturer.
7.5 FROST THERMOSTAT
7.6 COMFORT FUNCTION – COMBI (CB) ONLY
7.7 RESETTING THE BOILER
7.8 SYSTEM PRESSURE
8 MAINTENANCE AND CLEANING
9 USEFUL TIPS
7.9 ANTILOCK FUNCTION