Unit Type; Notes On Operation; Defrosting The Outdoor Unit; Preventing Cold Air Jets - AERMEC TRS 1001DX Manual Del Usuario

UNIT TYPE

Heat recovery unit with counter-current flows and direct expansion coil. Designed
and built to recover both sensible and latent heat, and to provide heating or cooling
capacity indoors. The units are supplied with the WRC1 wired control

NOTES ON OPERATION

DEFROSTING THE OUTDOOR UNIT

When the outside temperature is low but there is a high level of humidity,
and the unit is operating in Heating mode, the condensate formed on the
exchange surfaces of the outdoor unit tends to freeze, reducing the heating
capacity. The unit control prevents this phenomenon by activating the auto-
matic defrosting function. When this function is active, the fans of the indoor
and outdoor units could switch off and the unit could suspend the hot air flow
for a few minutes.
WARNING: During defrosting, the frost on the outdoor unit melts and forms
water: it is necessary to provide an adequate water drainage system.
NB: to adapt the WRC1 management logic to correct AHUKIT operation (that
envisages continuous ventilation even in heating mode), parameter P56
must be set correctly as indicated in the WRC1 control panel manual.
Parameter
Function
index
setting for contin-
uous ventilation in
heating mode
24
panel.
Default Range
00: continuous ventilation disabled
00
01: continuous ventilation enabled (this
setting is compulsory when the panel
manages an AHUKIT accessory)

PREVENTING COLD AIR JETS

In Heating mode, ventilation on the indoor unit is inhibited (for up to two
minutes from start-up) to allow the exchanger to reach the ideal temperature
for heating; it is therefore normal to notice a delay between switching on the
unit and activation of the ventilation.
The delay can be noticed under the following conditions:
1. Switching on Heating
2. After defrosting
3. Heating at low temperatures
Description of operating parameter
This parameter is used to select whether or not to stop the fans when
the set heating temperature is reached (reminder that, if the panel is
connected to a TSR1001DX accessory, it must be set with a value of
01). To set the parameter, proceed as follows:
(1) Select the operating parameter "P56";
(2) Press the "MODE" button to enter the parameter modify mode;
(3) Press the arrow buttons to set the required value;
(4) Press the "SWING/ENTER" button to return to the list of operating
parameters