enervent LTR-3 eAir, Руководство по установке

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Installation instructions for professionals
Temperature control
Heat recovery
Heat recovery is limited during summertime, if the
outdoor temperature is over +8°C. During this the heat
exchanger is not operating if no heating request is
received.
Heat recovery is on at 100% efficiency when temperature
is lower than +8°C. This may lead to contradictions,
especially in the spring, when the sun is heating the
indoor air even though the temperature outside is still
under +8°C. The temperature limit value can be changed
from the control panel.
Cooling recovery
During the summertime power limitation, the heat
exchanger activates at full power when the outdoor air
is over 1°C warmer than exhaust air. The heat exchanger
stops, when the outdoor temperature drops below the
exhaust air temperature. This helps with maintaining the
coolness of indoor spaces.
Heat recovery anti-freezing
MD control divides the supply blower operation based on
temperature measurements, which in turn prevents the
heat exchanger from freezing. Supply blower operates
normally after freezing risk has passed. Anti-freezing
automation can be activated from the control panel.
Efficiency of heat recovery
The efficiency of the heat recovery of supply and exhaust
air is displayed in the Measurements menu of the control
panel.
Supply, exhaust, and room
temperature controls
The supply air temperature in the apartment is controlled
by the supply air control. Ventilation unit can be used
either as supply air controlled, which is when the unit
aims to keep the supply air temperature on the set level,
or as exhaust or indoor air controlled, which is when the
unit aims to keep the exhaust or indoor air temperature
on a set constant level by controlling the setting point of
the supply air controller.
The supply air controller makes sure that the temperature
does not drop or rise over the limits set in the panel. If
the outdoor temperature is less than the heat recovery
temperature limit (default value +8°C), or if the ECO mode
is active, the supply air temperature can rise over the set
temperature, if the rise is from heat recovery only.
Exhaust or indoor air temperature constant control is used
when the temperature in the whole apartment needs
to be adjusted by heating or cooling the ventilation unit
supply air. The method of control is standard in ventilation
unit models that have cooling.
If the outdoor temperature is less than the heat recovery
temperature limit (default value +8°C), or if the ECO mode
is active, the exhaust or indoor air temperature can rise over
the set temperature, if the rise is from heat recovery only.
Room temperature control requires that the unit has
either a temperature sensor (extra) connected to the
control panel or a room temperature transmitter (extra)
connected to the MD card. Indoor air temperature control
measurements must be activated separately from settings.
Heating is active when the control requests heating,
i.e. when the set temperature value is higher than the
measured exhaust air (or indoor air) temperature. Cooling
is active when the control requests cooling, i.e. when the
set temperature value is lower than the measured exhaust
air (or indoor air) temperature. Heating and cooling can be
active at the same time, if the ventilation unit is equipped
with supply air absolute humidity control (extra).
W model have a water heating coil return water check
function that activates heating if the temperature of
the return water drops too much. If the return water
temperature is still dropping, the ventilation unit will shut
down and send an alarm.
If Max. heating / Max. cooling is selected from the control
panel quick menu, efficient heating or cooling activates
momentarily. The function forces the supply air control to
its limit value and raises the blowers to the Manual boost
level.
The function will run until the temperature value set in
the control panel main screen is reached.