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29
ENG
Heos BOX R704
+0300140EN - rel. 1.0 - 25.05.2022
The multi-evaporator electrical panel is designed to be placed above or, if
necessary, underneath the showcase. Regarding the electrical connections,
the same warnings apply as for the HEOS module. See the wiring diagram
supplied with the panel as regards the electrical connections, the
description of the cable glands/connectors and the functions these are
intended for.
The secondary electrical panel is supplied complete with the following
material:
• Assembly and maintenance instructions;
• Wiring diagram;
• 3 temperature probes NTC060HP00;
• 1 temperature probe NTC060HF01;
• spare fuse kit (described in the corresponding table)
Protection description Quantity supplied Fuse model HB200C0300CE0 HB200C0400CE0 HB200C0600CE0 HB200C1000CE0
Electronic controller power supply 2 10.3 x 38 32 A gL 32 A gL 32 A gL 32 A gL
Digital output 1, 2, 3, 4, 5 5 5 x 20 10 A time lag 10 A time lag 10 A time lag 10 A time lag
Digital output 6 1 5 x 20 12.5 A fast 12.5 A fast 12.5 A fast 12.5 A fast
Tab. 6.b
The specifications of the electrical loads managed by the secondary
electrical panel are the same as those managed by the Heos Box electrical
panel, described in paragraph 2.8.
For multi evaporator units, install the expansion valve as follows:
• connect each stator to the corresponding valve body, and secure it using
the nut provided, as specified on the valve technical leaflet. Then, for the
main box, run the stator cable through the cable gland in position 59,
Fig. 2.j and connect it to terminal J19, as shown on the wiring diagram.
For the secondary units, run each stator cable through the cable gland
in position 4 in the figure and again connect it to terminal J19, as shown
on the attached wiring diagram.
• connect via serial line (RS485) each Heos controller to terminal J15,
as shown on the attached wiring diagram. Use a shielded cable with
a maximum length between controllers not exceeding 100 metres
(minimum cable size AWG22). Use the “Fieldbus” cable gland indicated
in pos. 52 - Fig. 2.j.
6.2 WiFi gateway kit
To assemble the kit, proceed as follows:
• Before opening the electrical panel, move disconnect switch QS1 to
OFF;
• The parts of the box to be worked on are the electronic controller and
the electrical panel external interface (where all the electrical panel I/
Os are located);
• Now connect the wires downstream of the kit, marked 08 and 09,
to terminal J25, as shown on page +QE&EFS/7 of the panel’s wiring
diagram, using a flat-head screwdriver to help lever the spring;
• When connecting the wires, make sure that the tip of the wire is fully
inserted in the opening provided on the terminal;
• Then install the WiFi gateway marked A2 on the holes provided on the
external panel interface (where all the electrical panel I/Os are located),
using the two screws provided together with the kit, in the space
marked 2 in the figure;
• Now run the two cables connected to gateway A2 through the cable
gland marked “Supervision” (no. 12 in the figure), then firmly tighten
the cable gland. All of the work to be done outside of the panel is now
complete;
• Proceed by wiring these two cables inside the panel. Connect the 3
wires marked 37-38-15 to terminal J14 on the controller, and the wires
marked 08 and 09 to terminal J25, as shown on page +QE&EFS/7 of the
panel’s wiring diagram, using a flat-head screwdriver to help lever the
spring;
• Close the electrical panel and move the disconnect switch to ON to
restart the unit.
If installing a supervisory system:
1. Make sure there is an active and working Internet connection or GSM
modem so as to be able to connect to the supervisory system.
2.
Configure the correct communication parameters using
the tools available via smartphone or PC, as described in
the control manual
If installing a wired supervisory system:
run the serial cable through the
cable gland in position 12, Fig. 2.h, 6.a and connect it to the same terminal
of the WiFi Gateway.
Notice: The default I/Os on the secondary units are those indicated
in the wiring diagram.
6.3 Anti-sweat heater kit
• Before opening the electrical panel, move disconnect switch QS1 to
OFF;
• Installation involves the DIN rail on the vertical panel in the electrical
panel (no. 21) and the electronic controller, and will require the use of a
flat-head screwdriver to press the spring terminals.
• Install the fuse carrier (marked FU4) and the SSR relay (marked KR1) and
the two pre-wired terminals on the DIN rail (no. 21), as shown in the
wiring diagram on page +QE&EFS/1;
• Wire the cables marked 01 and 04 to terminals 1 and 2 (as per the wiring
diagram);
• Wire the cables marked 201 and 200 to electronic controller terminal J10
(as shown in the wiring diagram);
• Complete the wiring by connecting the anti-sweat heater power cables
to terminals 3 and 4.
• Close the electrical panel and move the disconnect switch to ON to
restart the unit.