Electronic pellet burner controller – NPBC-V3C-1/ NPBC-V4C-1/ NPBC-V4E-1
Language – Press the up or down navigation buttons (▲ ▼) to select the language for the controller's
menus and confirm your choice by pressing the right navigation button (►) or Menu
Timers – Set and activate time intervals when the burner's work is allowed. If even one timer is
activated, the burner will work only during this interval. Moreover, the rest of the required conditions
must also be presented, such as: the work mode must be anything but “Standby”, the temperature of
the water in the boiler must be below the set temperature, OD and RT inputs must not be active and
there should not be any errors that require the burner to stay off.
The time in the column “On” must be before the time in the column “Off”! If necessary, set the “Off”
time first, to provide larger range for the “On” setting.
When using timers to control the burner, it is more convenient to get information about their current
state and their next action from one of the information fields on the main screen.
If there are active timers and the burner is turned on, the timers will be excluded by pressing and
holding the button "On. / Off. " for more than 2 seconds.
User Manual / ver 3.11 http://www.naturela-bg.com/en/ page 21 of 37
If there is a check sign,
the timer is active
Turn on the LEDs only for the
days of the week when this
particular timer should be active.
Light green LED: ON
Dark green LED: OFF
Days of the week
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