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EXPERT 2V2SA
2.
MOUNTING INSTRUC-
TIONS
2.1.
Installing the Controller on
the Wall
Open the latch and lift the cover. Remove
the black caps located on each of the four
mounting holes. Mount the enclosure on
the wall using four screws. Be sure the
electrical knockouts are at the bottom of
the enclosure in order to prevent water from
entering the controller. Insert the screws in
the mounting holes and tighten. Fasten the
four black caps provided with the controller
onto the four mounting holes. The enclosure
must be mounted in a location that will allow
the cover to be completely opened right up
against the wall.
2.2.
Connections
Refer to the wiring diagram enclosed with this
user's manual to connect the controller. Drill
holes at the bottom of the enclosure to pass
the wires and install watertight connectors to
prevent water from entering in the enclosure.
Do not make any holes at the side and top
of the enclosure.
All wiring must be done by an au-
thorized electrician and must comply
with applicable codes, laws and
regulations. Make sure power is off
before doing any wiring to avoid
electrical shocks and equipment
damage.
Note that the input terminal blocks
can be removed from the electronic
board. This makes it easier to make
the connections.
2.2.1. Sensor Inputs
Sensors operate at low voltage and are isolated
from the supply. Make sure that sensor cables
remain isolated from all high voltage sources.
In particular, do not route the sensor cables
through the same electrical knockout as other
cables. Do not connect the shield from the
sensor cable to a terminal or a ground.
Extending a sensor: Each sensor can be ex-
tended up to 500 feet (150 meters).
To extend a sensor: Use a shielded cable
of outside diameter between 0.245 and
0.260 in (6.22 and 6.60 mm) (the cable
dimensions should not be under 18 AWG) to
ensure the cable entry is liquid tight. Do not
ground the shielding.
It is preferable to solder the cable joint to
ensure a proper contact between the two
cables.
Do not run sensor cables next to other
power cables. When crossing over
other cables, cross at 90°.
Defective sensors:
An alarm is gener-
ated when a defective
sensor is detected.
To identify the defective probe, select the
PROBE TEMPERATURE or OUTSIDE TEM-
PERATURE menu. Probe readings are then
displayed. Dashes are displayed instead of a
reading when the probe is defective. In the
case of room temperature probes, the control-
ler will operate according to the temperature
of the remaining probes.
2.2.2. Alarm Connection
There are two types of alarms on the market.
One type activates when current is cut off at
its input, whereas the other activates when
current is supplied at its input. For an alarm of
the first type, use the NC terminal as shown on
the wiring diagram. For an alarm of the second
type, use the NO terminal.
EXPERT 2V2SA, rev. 10
1: 74.2
2:-----
3: 72.3
4:73.0
7
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