Page No 16 Reznor, Guardian 1 Phase Electric Heat with Signal Pro, Installation Manual, EN 2021-11, D301375 Iss 0
I
Any air curtain within the network can
be connected with and respond to the
following optional circuits:
• External switch (ie BMS enable) where
required, to be volt free and wired in
PARALLEL via normally open contacts
to each terminal pair ‘TIMER’. (Contacts
closed to enable). Only air curtain(s) wired
this way will respond to the enable signal.
• Door switches where required, to be
volt free and wired to INDIVIDUAL base
units via normally closed contacts to each
terminal pair ‘DOOR’. (Contacts open to
enable door mode). Only air curtain(s)
wired this way will respond to the door
mode.
• An external sensor, where required, can
be wired to INDIVIDUAL base units to each
terminal pair ‘EXT’. Only air curtain(s) wired
this way will respond to the sensor setting.
Optional wiring
At the Installers terminal block, remove the
required jumper(s) and then wire in any
external connections that are required.
External switch (i.e. BMS enable) to be volt
free and wired via normally open contacts
to terminal pair ‘TIMER’. (Contacts closed to
enable). Remove factory fitted jumper J1.
• Door switch to be volt free and wired via
normally closed contacts to terminal pair
‘DOOR’. (Contacts open to enable door
mode). Remove factory fitted jumper J2.
• An external sensor, where required, to be
wired to INDIVIDUAL base units to each
terminal pair ‘EXT’. Only air curtain(s) wired
this way will respond to the sensor setting.
• If the optional external temperature sensor
is connected to the air curtain. If the
external temperature is equal to the set
temperature, all air curtains are turned off.
The temperature must then drop to 3°C
below the set temperature before the air
curtains are turned back on.
• Protection. There are two high speed
fuses on the electric model base unit to
protect the switching thyristors for the
heater. An external circuit breaker with
the appropriate rating should be installed
for the protection of the installation. See
technical data for the correct MCB
Networking
The display panel is connected to the first air
curtain via pre-wired RJ45 cable to the socket
in the first air curtain housing. See figure 25
on page 18
Connect a second RJ45 cable in to the spare
RJ45 socket of the first air curtain, and then
take across to one of the RJ45 sockets in the
second air curtain.
Further RJ45 cables can be used to connect
more air curtains to the network, up to a
maximum of 16 air curtains can be linked to
one program panel.
The RJ45 cable is 10m as standard however it
is available in 2m, 20m, 30m, 50m and 100m
lengths.
Maximum length 100m. (Total
length of cable used between
program panel and last air
curtain in network).
It is recommended that this control cable is run
separately within its own trunking if possible,
to avoid external interference.
Note: All air curtains connected within the
network system can be controlled under
the user settings of the single program
panel.
Summary of Contents for GUARDIAN GB 1000
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