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47
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Required space for maintenance and air flow
Minimum allowable space to the obstacles
Unit:mm
Mark
1
2
3
L1
Open
280
280
L2
100
75
Open
L3
100
80
80
L4
250
Open
250
Installation
type
Notes
(1) It is prohibited to install in a space enclosed with walls
at four sides.
(2) Unit must be secured with anchor bolts.
Anchor bolt should not protrude more than 15 mm above
the surface.
(3) Where strong winds blow, the blow outlet must be
oriented at right angle against the wind direction.
(4) Secure a space of 1 m or more above the unit.
(5) Barrier standing in front of the blow outlet must be lower
than the height of unit.
Unit: mm
Model FDCVA251HEN
Liquid piping: ø6.35 (1/4")
(Flare connecting)
Gas piping: ø15.88 (5/8")
(Flare connecting)
Piping, wiring outlet
L2
L1
L3
Terminal block
Holes for drain
(ø20
×
5 pcs.)
Holes for anchor bolt
(M10
×
4 pcs.)
58.6
132
43.1
51.9
471.5
L4
42.5
96.5
595
14.4
29.7
90.6
50
12
510
2-R6
106
780
67
463
49.6
45.4
290
286.4
164
17.5
14
312.5
13.5
340
Air inlet
Air outlet
Maintenance
space
( )
Air
inlet
35
°
35
°