General Wiring Recommendations - Distech Controls ECB-VAVS Installation Manual

Device Markings (Symbols)
Certain markings (symbols) can be found on the controller and are de-
fined as follows:
Symbol
CE marking: the device conforms to the requirements of
applicable EC directives.
Products must be disposed of at the end of their useful life
according to local regulations.
Read the Hardware Installation Guide for more information.
UL marking: conforms to the requirements of the UL
certification.
FCC marking: This device complies with FCC rules part 15,
subpart B, class B.
Warning Symbol: Significant information required. Refer to
the Hardware Installation Guide.
Alternating Current
Direct Current

General Wiring Recommendations

Risk of Electric Shock: Turn off power before any kind of
servicing to avoid electric shock.
£
All wiring must comply with electrical wiring diagrams as well as
national and local electrical codes.
£
To connect the wiring to a device, use the terminal connectors.
Use a small flat screwdriver to tighten the terminal connector
screws once the wires have been inserted (strip length:
0.25'' (6 mm), tightening torque 0.5 Nm).
£ Comply with all network and power supply guidelines outlined in
the Network Guide.
£
Keep wiring separate according to their function and purpose to
avoid any ambient noise transmission to other wires. Use strap-
ping to keep these wires separated. For example, keep power,
hazardous voltage, SELV, network, input wiring separate from
each other.
£
Power cables must be between 18 and 14 gauge (0.82 to 2.1mm
cross-sectional area). When connecting one wire to a controller's
terminal block clamping cage (pole), the wire must be between 22
and 14 gauge (0.33 and 2.1mm
necting two wires to a controller's terminal block clamping cage,
both wires must be the same thickness, both wires must be be-
tween 22 and 16 gauge (0.33 to 1.3mm
both wires must be of the same type (solid or stranded). Twist the
wires together and insert then into the controller's terminal block
clamping cage. For any other wiring combination (mixed wire thick-
ness, mixed solid and stranded conductors, more than three wires,
wire thickness is out of range), twist the wires together and use a
wire nut and a pig tail to connect to the controller's terminal block
connector as show below.
Wire Nuts
Pigtails
Terminal Block
Connector
Controller
Figure 2: Using a Wire Nut and Pigtail to Wire the Controller
2 / 14
Description
2
cross-sectional area). When con-
2
cross-sectional area), and
Wire Connections
£
Do not connect the universal inputs, analog/digital outputs or com-
mon terminals to earth or chassis ground (unless stated other-
wise).
£
Keep input and output wiring in conduits, trays or close to the
building frame if possible.
Controller Dimensions & Components
2.75 [69.96]
2.27 [57.62]
Damper Shaft
0.40 [10.05]
Clamping
Mechanism
0.86 [21.95]
Opening for
Damper Shaft
6.09 [154.76]
7.90 [200.61]
Front
0.55 [13.85]
Sliding Grommet
Figure 3: ECB-VAVS Dimensions and Components
5.42 [137.63]
0.40 [10.05]
0.86 [21.95]
6.09 [154.76]
7.90 [200.61]
0.55 [13.85]
Figure 4: ECB-VAVS Controller with Terminal Covers Dimen-
sions
DIP Switch Identification and
Configuration
2
Figure 5: ECB-VAVS Cover removed
5.51 [139.93]
2.27 [57.62]
Actuator
Clutch for
Manual
Adjustment
Profile
Pressure Sensor Inputs –
High-Low Sensor Connection
Polarity is Unimportant
10.84 [275.26]
Front
Sliding Grommet
NETWORK
ADDRESS
EOL
NETWORK
ADDRESSING
MAC Address and
EOL DIP Switch
located under the
cover
3.70 [94.04]
1.25 [31.75]
±0.20
[± 5]
Inches [Millimeters]
3.70 [94.04]
1.25 [31.75]
½-inch
knockout: Ø 0.875 (7/8)
[Ø 22.23]
4 Positions
Profile
±0.20
[± 5]
Inches [Millimeters]