User Guide; Overall Ventilation Functions - Dantherm HCC 2 Alu Service Manual

Overall ventilation functions

Introduction
Never switch off the main power to shut down the ventilation. This could ultimately result in
condensate water dripping from air inlets.
Ventilation modes
The units can ventilate your home in three different main operation modes. The modes are
selectable according personal needs, taking in mind that national rules and regulations, can
state a minimum ventilation requirement. Auto mode requires an accessory sensor
Mode
Manual
Week timer
Demand
(accessory)
Override operation On top of the above main ventilation modes, the user can select some override modes for
various purposes. These overrides will disable automatically depending on time or tempera-
ture.
Overrides
Fan boost
Summer mode Supply fan off, extract fan still running, and colder air will flow through any
Bypass
(accessory)
Fireplace
booster
Night mode
Away mode

User guide

Description
In manual operation, the unit will run in the requires fan speed at all times.
Fan speed 4 is 130% boost mode. De-activates automatically after 4 hours
Fan speed 3 is nominal fan speed, defined as 100%
Fan speed 2 is 49% of speed 3
Fan speed 1 is 49% of speed 2
Fan speed 0 is fan stop. De-activates automatically after 4 hours.
Timer controlled operation mode sets the fan speed according a week time
table. The controller has 10 fixed and 1 custom timer. Select a fixed time
table that cover your requirements or create a custom timer, in the pc-tool.
Appendix A - "Week program specification" on page 38 shows in details,
the week programs layout
In auto mode (demand), the unit will automatically adjust the ventilation
level, to comply with the ventilation needs, measured in the outgoing air by
the VOC and RH% sensors. This operation mode is only possible if the unit is
fitted with an air quality sensor.
Description
130% boost in 4 hours.
open window. This reduces inside temperature in summer times, with half
energy consumption.
Both fans running, but no heat recovery. This will automatically supply
colder outside air, that reduces inside temperature in summer times.
7 min. with extract fan reduced to 50% This creates an overpressure en-
hancing the chimney function, when lighting a fireplace
Sets the fan to speed 1 at night regardless of any other mode. Start and end
time can be set from the remote control
Sets the fan 2/3 of the time to speed 1 and 1/3 of the time at speed 0. Disa-
bles automatically after 28 days
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