Computherm Q4Z, Operating Instructions Manual

Page: 9 / 12

- 9 -
5.3 Activating/deactivating of the delay functions
To activate/deactivate the Turn on and off delay functions, press and hold the
Z1 and Z2 buttons on the zone controller for 5 seconds until the blue LED
flashes at one second intervals. You can activate/deactivate the functions by
pressing the buttons Z1 and Z2. The LED Z1 shows the Turn on delay status,
while the LED Z2 shows the Turn off delay status. The function is activated
when the corresponding red LED is lit.
To save the settings and return to the default state wait 10 seconds. When the
blue LED stops flashing the zone controller resumes the normal operation.
The delay functions can be reset to the factory defaults (deactivated state) by
pressing the “ RESET ” button!
6. USING THE ZONE CONTROLLER
After installing the device, putting it into operation and turning it on with its switch
(position
ON
), it is ready for operation, which is indicated by the illuminated
state of the red LED with sign “ POWER ” and the blue LED with sign “ A/M ” on
the front panel. Then, following the heating command of any of the thermostats,
the zone valves/pumps associated with the thermostat open/start and the boiler
also starts, also taking the Turn on delay function into account (see Section
5
).
By pressing the “ A / M ” ( AUTO / MANUAL ) button (the factory default AUTO sta-
tus is indicated by the illumination of the blue LED next to the “
A
/
M
” button) it
is possible to detach the thermostats and manually adjust the heating zones
for each thermostat to start. This may be necessary temporarily if, for exam-
ple, one of the thermostats has failed or the battery in one of the thermostats
has run down. After pressing the “
A
/
M
” button, the heating of each zone can
be started manually by pressing the button indicating the zone number. The
operation of the zones activated by manual control is also indicated by the
red LED of the zones, but in manual control the blue LED indicating the “ A / M ”
status is not illuminated. (In case of manual control, the heating of the zones
operates without temperature control.) From manual control, you can return
to the thermostat-controlled factory default operation ( AUTO ) by pressing the
“ A / M ” button again.
Warning! The manufacturer does not assume responsibility for any direct
or indirect damages and loss of income occurring while the appliance is
being used.