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REFLECTOR PANEL HEATER INSTALLATION GUIDE
5.2 Electrical Installation
1. Isolate all associated power supplies and ensure that they remain OFF during
proce
dure.
2. Fit an approved cable gland to the junction box cable entry to be used for the power
connections to the Reflector H
to maintain ingress protection rating.
3. Fit approved blanking plugs to all unused cable entries.
4. Ma
ke appropriate electrical connections as shown in the following section.
5
.2.1 Terminal Connection Diagram- Short Range Reflector Panel Heater
The short range Reflector Panel Heater is a resisti
2
4V
dc
) sup
ply. All connections are made inside the junction
Reflector Panel Heater Assembly. To allow for a
term
ina
ls (
2 and 3) are available.
Terminal Identification
N
ote: If the voltage drops below 20Vdc in operation, the 24Vdc input should be connected
te
rm
inal 3 instead of terminal 2.
Terminal 2
connects to a 100Ω heater; terminal 3 connects to a 68Ω heater.
If th
e C
ros
s
Duct Excel shares a power supply cable with the Reflector Panel Heater, a
che
ck m
us
t be made to verify that a minimum voltage of 18V is availab
Exc
el w
hen
the Reflector Panel Heater is operating.
eater Panel, using sealing washers where necessary
Wire Colour
1
White
2
Black or Brown
3
Blue
6
Green
Issue 5 May 2007 2104M0728
ve heater requiring an 18-28Vdc (nominal
box supplied as part of the
wide range of supply voltage, two power
Customer Connection
0V
>20Vdc
18-20Vdc
Earth
6
this
to
le at the Cross Duct
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