SYSVRF2 IM

7
4.6 Installation space requirements
Fig.4-14
For single row installation
>1m
>1m
>1m
100-500mm
Front Front
>800mm
Fig.4-15
For multi-row installation
>1m>1m
>1m
>1m
>1m
100-500mm
Front Front
Front Front
Front Front
>800mm
Fig.4-13
Expansion bolt positioning (Unit: mm)
Fig.4-12
Unit: mmTable.4-3
15×23 U-shaped hole
B
A
C
D
4.5 Base structures
≥80mm
Fig.4-11
Outdoor unit
Concrete base
h=200mm
Φ10 Expansion bolt
Rubber anti-vibration pads
Solid ground / surface
200mm
A solid base prevents excess vibration and noise. Outdoor unit
bases should be constructed on solid ground or on structures
of sufficient strength to support the units’ weight.
Bases should be at least 200mm high to provide sufficient
access for installation of piping.
Either steel or concrete bases may be suitable.
A typical concrete base design is shown in Figure 4-11. A
typical concrete specification is 1 part cement, 2 parts sand
and 4 parts crushed stone with Φ10mm steel reinforcing bar.
The edges of the base should be chamfered.
To ensure that all contact points are equally secure, bases
should be completely level. Base design should ensure that the
points on the units’ bases designed for weight-bearing support
are fully supported. Bolt spacings should be as per Figure 4-12
and Table 4-3.
A drainage ditch should be provided to allow drainage of
condensate that may form on the heat exchangers when the
units are running in heating mode. The drainage should ensure
that condensate is directed away from roadways and
footpaths, especially in locations where the climate is such that
condensate may freeze.
Outdoor unit base structure design should take account of the
following considerations:
Ensure enough space for maintenance. The units in the same
system must be at the same height, refer to Fig.4-13.
Outdoor units must be spaced such that sufficient air may flow
through each unit. Sufficient airflow across heat exchangers is
essential for outdoor units to function properly. Figures 4-14 to 4-15
show spacing requirements in different scenarios.
A
B
D
C
SIZE
HP
740
990
723
790
1090
790
1340
723
8,10, 12 14,16,18, 20, 22 24,26,28, 30, 32
723
1480
1730
790
(Air-out )
(Air-out )
(Air-in)
(Air-in)
(Air-in)
(Air-in)