Ii.b) Changing The Central Heating And Hot Consumption Water Setpoint Temperature; Ii.c) Firing Up - TECH ST-85 User Manual

II.b) Changing the central heating and hot consumption
water setpoint temperature.
In order to change the setpoint temperature of the central heating
(while in "C.H. screen" main view), turn the encoder knob and (after setting
a desired value) press it to confirm the change.
In order to change the setpoint temperature of the hot consumption
water (while in "H.C.W. screen" main view), turn the encoder knob and (after
setting a desired value) press it to confirm the change.
Chapter "Screen" describes methods of changing the main screen view.

II.c) Firing up

This function allows you to easily fire up the boiler. After igniting the
boiler, you need to activate an automatic fire-up cycle. By selecting optimum
parameters, the boiler uses the zPID function to smoothly switch to the duty
mode. If the boiler reaches the fire-up threshold temperature, the fan item
will appear instead of the fire-up function. From now on, the option will be
used to activate/deactivate the fan. This setting allows you to temporarily
deactivate the fan at any time, e.g. while feeding fuel.
If during the fire-up cycle the boiler does not reach 40
minutes, (default parameters), the following warning message will appear
on the display:
To restore the boiler to operation, switch off the alarm by pressing the
encoder and restarting the fire-up procedure.
38 O c | 55
unable to fire up
ST- 85 – USER'S MANUAL
O c
O C within 30
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