Hitachi FSXNHE Serie Installations- Und Betriebshandbuch Seite 33

Unit installation
7.3.4 Considerations
• The dimensions considered in the figures include the space nec-
essary for typical installation, and maintenance work for oper-
ation in refrigeration mode at an outdoor temperature of 35 °C.
If the outdoor temperature is higher and if there is a possibility
of a short circuit between the inlet and outlet air, locate the
most suitable dimensions by calculating the air flow current in
comparison with the dimensions given.
7.4 FOUNDATION AND ANCHORAGE OF OUTDOOR UNIT
7.4.1 Foundations
N O T E
All measurements are in mm.
A Mortar housing ø100x150
B Drainage 100x20
C Anti-vibration insulation material
D Refrigerant pipes
The foundations for the installation of the outdoor unit must be
more than 150 mm above ground level.
The foundations require perimeter drainage to help drain con-
densation.
When a system of condensation drainage pipes is required for
the outdoor unit, the genuine accessory DBS-TP10A should be
used. Do not fit drainage pipes or collection trays in cold climates,
as they could freeze and break.
D A N G E R
Drainage must not take place in areas frequented by pedes-
trians. In low temperatures, the drainage water could freeze
and lead to falls.
The foundations must be able to bear the weight of the whole of
the base of the unit and should be laid as shown in the diagram.
A
B
C
Check the front-rear line and the sides of the unit are level: there
should not be more than 10 mm difference between each side.
The foundation must be sufficiently strong to ensure that the out-
door unit:
• Is not tilted.
• Does not produce strange noises.
• Remains secure in the event of strong winds or earthquakes.
19
PMML0294A_rev.2_02-2014.indb 19
A
B
D
C
A
B
C
PMML0294A rev.2 - 07/2014
• For installation in several groups, a maximum of six units (A)
one metre apart can be grouped.
• If the unit is surrounded by walls on all four sides, keep one of
the walls partially open.
• Keep the upper side open to prevent mutual interference of
inlet and outlet air for each outdoor unit.
7.4.2 Position of anchorage bolts
N O T E
All measurements are in mm.
1
1
A
131 948 131
Secure the outdoor unit using the field-supplied anchorage bolts.
A. Openings for the anchorage bolts (4x) 38x15.
1 Outdoor unit SET FREE RAS-(8-12)FSXN1E and
2
RAS-(5/6)FSXNH(E)
2 Outdoor unit SET FREE RAS-(14/16)FSXN1E and
RAS-(8-12)FSXNH(E)
A
Diagram of fastening of outdoor unit using field-supplied
anchorage bolts.
A Nut
B Washer
C M12 anchorage bolt
D
Mortar fill
E Concrete
1
A
2
131 948 131
2
A
14/07/2014 12:28:10