Unit Installation - Lennox ECOLEAN EAC 0091 S Installation, Operating And Maintenance

2.- INSTALLATION

2.5.- UNIT INSTALLATION

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1.- The EcoLean units could be installed outside or inside.
2.- See the minimum clearance diagrams for access - air supply to the batteries in the heating section of the unit.
(see page 29)
3.- Assemble the unit on a resistant base, preferably concrete. To prevent vibrations, the concrete base should
not come into contact with the building's foundations.
4.- It is advisable to assemble the unit on shock absorbers (antivibration mountings).
5.- During heating mode (heating pump coolers) ice forms in the coils. The defrost process is activated during
heating mode in heat pump units, when the outside temperature is low and the outdoor coil could become
frozen.
To melt the ice, the defrost function will switch the unit to cooling operation for a short period. When the
evaporation temperature starts to drop, a defrost period sets in to provide sufficient heat transfer. During
defrosting, the ice melts from the batteries. As a result, the ice contains water which must be removed.
WARNING
If the unit is exposed for long periods to installation conditions below 0ºC the water from defrost
can freeze in the base of the unit. This prevents drainage. Ice build up can occur preventing
correct operation. For these conditions contact customer service team.
6.- The heat exchanger water flow during cooling must be the same as during heating.
7.- Fit a water filter in the unit inlet.
It is obligatory to install a mesh filter in units not equipped with Hydronic or Hydraulic module.
The step of the mesh should not be superior to 1 mm.
8.- Use water treating if necessary.
9.- The water inlet to the circuit has to be filled from lowest point, with purges opened, to prevent air being trapped.
10.- Location inside:
Air outlet
Air inlet
Air inlet duct (1)
For location inside, keep in mind following advice:
- In heat pump units during defrost cycle, the units produce a great amount of water melting the ice off coils.
If you wish to drain the water, adequate drainage should be installed below the unit to collect and carry out the water
where desired.
- Air duct installation:
If air duct has been installed, the operating limits get reduced (see operation limits section in this manual).
(1) The air intake plenum (option) available for models from 0251 to 1303 makes easier the installation of the air
intake duct (see page 26).
(2) The discharge plenum (option) lets the installation of a square discharge duct for the high static pressure units
FP1 and FP2 (see page 26).
Air outlet duct (2)
Unit
Auxiliary drip tray
(heat pump unit)
• • • • •
mode
set
off on
30
In heat pump units with
double circuits and cooling
only units 1003S to 1303S,
if only one duct is going to
be installed, a regulated
pressure damper should
be installed for each fan,
to avoid air by-pass through
the fan if it has stopped.