Dantherm HRC 2, Руководство пользователя

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BYPASS-COOLING
setpoints In BYPASS-COOLING operation the air channels are parallel through the unit (no heat
recovery). If pre-/aftercooling is connected, the icons for these components will be
shown when they are in operation only.
In the installer menu you can see/change the setpoints for BYPASS-COOLING on the lo-
cations shown below.
T1/SET Bypass Tmin = Minimum outdoor temperature, where BYPASS-COOLING can
start.
T3/SET Bypass Tmax = Minimum extract air temperature, where BYPASS-COOLING can
start.
The setpoint for supply air temperature (T2) in connection with aftercooling is identical
with the T1/SET bypass Tmin.
BYPASS-COOLING
strategy If Pre-/aftercooling coils are installed they are controlled by the same setpoints and
control strategy as the built-in BYPASS-COOLING function. I.e. Pre-/aftercooling and
bypass are always switched on at the same time.
If Aftercooling is installed it will be used together with “cooling recovery mode” if the
outdoor temperature (T1) is higher than the extract air temperature (T3).
The setpoint for AUTOMATIC BYPASS-COOLING can be adjusted as follows:
Step Action
1 Press RIGHT for 10 sec., until the installer menu is active (the ventilation
unit icon is flashing)
2 Press RIGHT until the BYPASS-COOLING icon (parallel air channels on the
display) flashes slowly.
NB. The display shows the actual temperatures in all fields.
3 Press CENTER and the actual setpoints for BYPASS-COOLING are shown on
the T1 and T3 places.
4 Press CENTER and the setpoint for T1/SET bypass Tmin will flash quickly,
together with the icons for pre-/aftercoolers if any is installed.
5 Press UP/DOWN to change the setpoint for T1/ SET bypass Tmin, and con-
firm by pressing CENTER.
6 The setpoint for T3/Bypass Tmax will now flash quickly together with the
icons for pre-/aftercoolers if any is installed.
7 Press UP/DOWN to change the setpoint for T3/ SET bypass Tmax and con-
firm by pressing CENTER. If set point is set to “OF” the BYPASS-COOLING
permanent switched off.
8 Press RIGHT for 10 sec. until the installer menu closes (the ventilation unit
icon stops flashing)
(Precooler icon)
(T1/ SET Bypass Tmin)
Unit in bypass-cooling mode
(Aftercooler icon)
(T3/SET Bypass Tmax)
Ventilation unit icon