Installation Guide

-10-
OPTION SETTING
6
6-1
HEATER UNIT HU-3 (OPTION)
The heat release effect makes the unit less prone to frost. HU-3 can be mounted to either upper or lower part of the unit.
Use a 24 V power supply to use HU-3.
< Mounting method >
1
Tear the wiring groove section of the label that is pasted on
the chassis as shown below.
4
When connecting the lead wires to the wiring, make the
connection using the included connector or soldering. Insert
the wires into the connector and tighten the connections with
pliers.
Connector
NOTE>>
The label can be torn with a
finger.
NOTE>>
Ensure that the wiring distance from the power supply is within
the range shown in the table on the right. When using 2 or
more units on 1 wire, the maximum wiring distance is obtained
by dividing the wire distance by the number of unit used.
3
Route the cable alng the wiring groove and draw the cable
through the cutbush.
DIMENSIONS
7
Unit: mm (inch)
448 (17.6)
96 (3.8)
79 (3.1)
84 (3.3)
(WALL)
222 (8.7) (POLE1)
265 (10.4) (POLE2)
0.83 mm
2
(AWG18)
1.31 mm
2
(AWG16)
300 m (1000 ft.)
500 m (1700 ft.)
800 m (2600 ft.)
2.09 mm
2
(AWG14)
2
Insert HU-3 into the chassis.
NOTE>>
• Insert the tip of HU-3
into the hook of the
chassis to mount HU-3.
• Do not mount HU-3 with
the face down.
Caution
Do not wire HU-3 to
the main unit. Doing
so may result in
malfunction.