Carrier 50FF 020 Installation, Operation And Maintenance Instructions page 11

7 - POSITIONING AND INSTALLATION
Minimum area for indoor air distribution
The unit with refrigerant R-454B (A2L fl uid) needs a minimum
surface in the room where the air supplied by its indoor circuit will
be distributed, according to EN-378-1:
50FC 020
Refrigerant charge per
comming soon
circuit (kg)
Minimum area (m ) comming soon
2
50FC 052
Refrigerant charge per
circuit (kg)
Minimum area (m )
2
Important: It is the customer's responsibility to carry out the risk
analysis of the installation and, as a result of that analysis, to take
the necessary measures according to standard EN-378-1. Consult
the recommendations given in the "A2L rooftop installation guide"
(Nb. 10714).
These units are equipped as standard with a leak detector that
from a certain concentration of gas (parametrizable) activates
a PROTECTION MODE until the mitigation of the leak (see the
chapter on "Safety elements".
Removing forklift guards
On units with lower supply and return, the fork-lift truck guards
must be removed. This is also the case when the units are to be
connected onto a roofcurb.
These guide rails are designed to be removed from both sides of
the unit, as required. They are secured to the unit using 4 clamping
pieces with M8 screws.
Attention: a free space equal to the width of the machine is
required for revoming the rails, bigger than the "Recommended
service clearance".
Important: the transport guards also must be removed before
installling. These guards are fi xed with M4.8 self-tapping screws.
Transport guards
Forklift guards
Clamping piece and M8 screw
028 037 040 045
9,9 10,2
65,2 68,8
058 062 070 074 086
comming soon 9,1 9,1
comming soon 55,5 55,5
Sound Level
These units are designed to work with a low acoustic level. In any
case, the following must be taken into account for the design of
the installation: the outdoor environment for acoustic radiation, the
type of building for the noise transmitted by air, the solid elements
for the transmission of vibrations.
047
To reduce transmission through solid surfaces to the maximum, it
10,4
is very advisable to install shock absorbers between the ground
or structure and the unit frame. If necessary, a study must be
72,5
commissioned to an acoustic technician.
093
Sound power level (LW)
9,2
50FF/FC 020
63 Hz 55,2
56,6
125 Hz 64,2
250 Hz 71,8
500 Hz 70,2
1000 Hz 72,0
2000 Hz 69,7
4000 Hz 62,6
8000 Hz 59,0
Total dB(A) 77,5
50FF/FC 052
63 Hz 64,3
125 Hz 69,6
250 Hz 77,0
500 Hz 79,5
1000 Hz 79,4
2000 Hz 77,0
4000 Hz 73,1
8000 Hz 67,9
Total dB(A) 85,0
Sound pressure level (LP)
Measurement conditions: in a clear fi eld, measured at a distance
of 5 metres, directivity 2 and at 1,5 metres from the ground.
50FF/FC 020
Total dB(A) 51,0
50FF/FC 052
Total dB(A) 58,3
Note: The sound pressure level depends on the installation conditions
and, as such, it only indicated as a guide. Values obtained according to
the ISO 3744 standard.
Preparation of the ground
It is necessary to ensure that the surface where the unit is going
to be installed in completely fl at. Any defect in the preparation of
the unit support surface translates into stresses on the structure,
which may result in its deformation. The unit must be perfectly
level when installed.
These units can be installed on the fl oor or on a brick curb or
steel profi le. Based on the fi xing solution defi ned in the installation
project, it will be necessary to plan the placement in the base of
threaded rods in the expectation that the unit supports can be fi xed
later on. To do so, it is recommended that a template be made
with the heights corresponding to the fi xings.
Foresee appropriate damping devices in these fi xings to
ensure that noise and vibration transmission is avoided
(consult the reactions in the support in paragraph 7.6).
028 037 040
60,8 61,4 60,9
66,7 68,9 66,1
74,8 76,1 72,9
76,7 76,4 76,8
76,2 76,3 77,5
73,5 74,3 75,3
69,2 70,3 70,6
63,7 65,5 65,8
82,0 82,5 82,5
058 062 070 074
64,5 64,9 64,8 64,6
69,9 71,5 72,4 71,3
77,7 78,9 79,7 78,4
80,1 80,4 79,9 80,1
79,9 80,2 79,8 80,4
77,4 77,8 77,7 78,3
73,4 73,7 73,8 73,9
68,2 68,6 68,9 69,1
85,5 86,0 86,0 86,0
028 037 040
55,5 56,0 56,0
058 062 070 074
58,8 59,3 59,3 59,1
045 047
61,3 63,1
70,0 71,1
76,3 76,4
77,1 78,3
77,3 78,2
74,1 75,5
70,4 72,2
65,6 67,5
83,0 84,0
086 093
64,6 65,3
71,4 74,0
77,9 79,3
80,2 80,9
80,6 80,7
78,1 77,7
74,2 74,4
69,4 69,6
86,0 86,5
045 047
56,5 57,5
086 093
59,1 59,6
11