Bard TCS22-***-003 - Manual (Page 18)

2100-444-003A
Page 12
3.2.2 WIRING - LOW VOLTAGE
IMPORTANT: High voltage wiring must
not be run in the same conduit as low voltage
control or sensor wiring. Failure to comply with
this requirement will result in poor or no remote
communication and/or in inaccurate sensor
reading.
Sixteen (16) wires should be run from each
Bard Wall-Mount

to the low voltage terminal
block in the TCS22. An eight pair shielded cable
with 20 gauge copper conductors, such as National
Wire & Cable Corporation NQP series cable or
equivalent, is recommended for distances up to 45
feet. See Table 1 for distances more than 45 feet.
The connection points are shown in Figure 5.
Table 1 Low Voltage Wire Size
Wire Gauge Maximum Distance
in Feet ( meter)
20 gauge, 0.50 mm 2 45 (14)
18 gauge, 0.75 mm 2 60 (18)
17 gauge, 1.00 mm 2 75 (23)
16 gauge, 1.50 mm 2 100 (30)
14 gauge, 2.50 mm 2 160 (49)
12 gauge, 4.00 mm 2 250 (76)
3.2.3 WIRING - SENSORS
IMPORTANT: High voltage wiring must
not be run in the same conduit as low voltage
control or sensor wiring. Failure to comply with
this requirement will result in poor or no remote
communication and/or in inaccurate sensor
reading.
3.2.3.1 Outdoor Temperature Sensor (OTS)
The Outdoor Temperature Sensor (OTS) is
supplied as part of the TCS22 package. The
Outdoor Temperature Sensor (OTS) is a thermistor
type device. The sensor is mounted in a
weatherproof junction box suitable for connection
to conduit. This sensor is a two (2) wire device.
The Outdoor Temperature Sensor (OTS)
should be mounted on the exterior of the structure
at a height above any expected accumulation of
snow. It is recommended that the box be mounted
securely to the outside wall of the structure and all
wiring to the sensor be made through conduit. A
one (1) pair shielded cable with 20 gauge copper
conductors, such as National Wire & Cable
Corporation NQP series cable or equivalent, is
recommended for connection to the sensor for
distances up to 45 feet. See Table 1 for distances
more than 45 feet.
Use wire nuts to connect the cable to the
blue and yellow sensor leads in the sensor housing.
Polarity is not critical with this sensor. The
connection points for the sensor inside the TCS22
are shown in Figure 4.
3.2.3.2 Outdoor Humidity Sensor (OHS)
The Outdoor Humidity Sensor (OHS) is
supplied as part of the TCS22 package. The
Outdoor Humidity Sensor (OHS) is a bulk polymer
type device. The sensor is mounted in a
weatherproof junction box suitable for connection
to conduit. This sensor is a four (4) wire device, 1
to 5 Vdc output.
The Outdoor Humidity Sensor (OHS)
should be mounted on the exterior of the structure
at a height above any expected accumulation of
snow. It is recommended that the box be mounted
securely to the outside wall of the structure and all
wiring to the sensor be made through conduit. A
two (2) pair shielded cable with 20 gauge copper
conductors, such as National Wire & Cable
Corporation NQP series cable or equivalent, is
recommended for connection to the sensor for
distances up to 45 feet. See Table 1 for distances
more than 45 feet.
Connect the cable to the terminal blocks in
the sensor housing. Polarity is critical with this
sensor. The connection points for the sensor inside
the TCS22 are shown in Figure 4.
3.2.3.3 Zone Temperature Sensor (ZTS)
The Zone Temperature Sensor (ZTS) is
supplied as part of the TCS22 package. The Zone
Temperature Sensor (ZTS) is a thermistor type
device. The sensor is premounted to the front door
of the TCS22. No wiring is required.