Controller Placement; Mounting, Space And Ventilation Requirements - Lorentz PS2-150 Manuel D'installation Et De Fonctionnement

7.4 Controller Placement

The controller must be protected from water, moisture and
animals, so keep the controller box sealed. Place the control-
ler in a dry and sufficiently ventilated environment.
Place the controller close to the solar array, not the pump,
to reduce the risk of lightning damage. The controllers' input
circuitry is more sensitive to surges than its output. There-
fore it is safest to minimize the length of the input wiring.
Electronic devices are most reliable when they are protected
from heat. Mount the controller where it is shaded from
the midday sun. An ideal location is directly under the PV
generator. If no shade is available, cut a piece of sheet metal
and bolt it behind the top of the controller. Bend it over the
controller to provide shade. This is especially important in
extremely hot locations. Extreme heat may trigger a thermal
function in the controller causing it to reduce the power
consumption or turn it off. The controller housing can reach
high temperatures when operating at high ambient tem-
peratures. This is normal and will not reduce the expected
lifetime of the controller or its components.
Controller Installation

7.5 Mounting, Space and Ventilation Requirements

PS2 controllers can be mounted side by side.
All PS2 controllers have a fan-less design; they are cooled
by air convection. It is strictly advised not to install the con-
troller in an additional enclosure. If an additional enclosure
is necessary a sufficient vertical airflow (from bottom to top)
has to be ensured to allow sufficient cooling.
PS2 controllers have a keyhole mounting system to
simplify mounting on appropriate surfaces. For mounting
on poles and similar structures the PS2 is compatible with
the LORENTZ PM accessory brackets for a maximum of
convenience.
When mounting the PS2 controller with the LORENTZ PM
accessory brackets tighten the screws diagonally and evenly.
CAUTION – do not over tighten the
mounting screws on the PS2 housing when
using the PM accessory brackets to avoid
damage to the PS2 controller housing.
CAUTION – When using PM accessory
brackets, for high performance systems
and/or with high ambient temperatures a
backplate must be installed between the
controller and the PM accessory brackets
to preserve the funnel effect of the
cooling fins. Operating without a
backplate can lead to insufficient cooling
which will result in reduced performance.
For controller dimensions, cf. "Table 3: PS2 Controller dimen-
sions for installation" on page 20.
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