Technical information

26
13.5.- Fixed outdoor air intake damper
Comprises a damper located at the outdoor air intake, and
includes the same rain hood and aluminium mesh filters
as the economiser. The damper is equipped with a manual
opening device, and mechanical locking to fix its position
once the adequate outdoor air percentage is achieved;
always in accordance with the operating limits of the unit
(see Fig. 13).
13.6.- Washable air filters G4 (EU4)
The filtering media is synthetic fibre arranged in zig-zag,
resistant to 5 washings and has the following characteristics:
Filtering classification in compliance with CEN-EN779, G4
(EU4) - Gravimetric efficiency ASHRAE 52/76, 90% - Fire-
proof classification DIN5348, F1.
13.7.- Dirty filter pressure switch
Allows establishing a dry contact when the filters are ob-
structed, thus indicating filters need maintenance or replace-
ment. Connected to the DPC-1 thermostat, allows viewing
the filter icon on its display.
13.8.- High pressure drive (HPD)
Comprises a motor with greater capacity than the standard
motor that allows the indoor fan performances with regard
to flow and/or static pressure. See sections Nos. 10 and 11
for characteristics and performance tables.
13.9.- Low ambient temperature control
The rooftop units are designed to operate, in cool mode, at
minimum outdoor temperatures of 7° C. With this accessory,
- Fig. 13 -
Fixed outdoor air intake damper
OUTDOOR AIR
POSITION
INDICATOR
ADJUSTABLE
OPENING LEVER
LOCK
SCREW
DETAIL OF MANUAL CONTROL