9
1) Maximum length of M-NET transmission
1 L2+L3+L4+ 1+ 2+ 3 ( 4)
=1640 ft/500m
2 L2+L3+L4+ 1+ 5
=1640 ft/500m
3 L2+L3+L5+ 6+ 7 ( 8)
=1640 ft/500m
4 3 ( 4)+ 2+ 1+L4+L5+ 6+ 7 ( 8)
=1640 ft/500m
5 5+ 1+L4+L5+ 6+ 7 ( 8)
=1640 ft/500m
2) Maximum power feeding length for the indoor control line
1 1+ 2+ 3 ( 4)
=656 ft/200m
2 1+ 5
=656 ft/200m
3) Maximum power feeding length for the centralized control line
1 L1+L2
=656 ft/200m
2 L1+L3+L4 (L5)
=656 ft/200m
3. Installation
Installation methods for the centralized controller GB-24A are shown below.
Method1: Horizontal installation using L-fittings
Attach two L-fittings to GB-24A using the supplied screws (Fig. 5-1), then install GB-24A (Fig. 5-2).
Install the GB-24A in a metal control panel box (steel: thickness 3/64 in (1mm) or more).
When installing follow the metal control panel box clearance space specifications as shown in the Fig. 5-2.
(Install in an area capable of withstanding a 2 1/2 lb (1.1 kg) load.)
Fig. 5-2
Unit: in (mm)
NOTE
If the remote controller cables ( 4, 8) do not exceed 32 ft (10m), the length for 4, 8 do not have to be
factored into the total length.
NOTE
Centralized controller GB-24A is not waterproof.
CAUTION
x
L-fittings must be attached at two points on the unit.
x
The unit with L-fittings must be attached at four points to prevent the unit from falling.
NOTE (*1)
When connecting the ground cable after GB-24A is installed, leave some space for mounting screws.
When there is little space for mounting screws, connect the ground cable before GB-24A is installed.
13/16 (20)
13/16 (20)
2 (50)
13/16 (20) *1
M3
M4
11 13/32 (290)
Total of 4 screws
(Both sides)
Top view
Fig. 5-1
