10. Push the
Manual Override
button, and turn
the actuator coupling manually to ensure that
the actuator can rotate from full-closed to full-
open positions without binding.
11. Complete the mounting by rotating the damper
to the full-open position.
CAUTION
Risk of Property Damage.
Rotate the damper to the full-open position before
starting the air handler. Failure to rotate the damper to
the full-open position may result in damage to the VAV
box or ductwork when the air handler is started.
ATTENTION
Risque de dégâts matériels.
Faire pivoter le registre pour le placer en position
d'ouverture complète avant de démarrer l'unité de
traitement d'air. Le non-respect de cette directive
risque d'endommager le caisson de l'unité à volume
d'air variable (VAV) ou le réseau de conduites au dé-
marrage de l'unité de traitement d'air.
Wiring
Observe the following guidelines when wiring a
CVM controller:
CAUTION
Risk of Electric Shock.
Disconnect the power supply before making electrical
connections to avoid electric shock.
ATTENTION
Risque de décharge électrique.
Débrancher l'alimentation avant de réaliser tout rac-
cordement électrique afin d'éviter tout risque de
décharge électrique.
Important:
Do not connect supply power
to the controller before finishing wiring and
checking all wiring connections. Short circuits
or improperly connected wires can result
in damage to the controller and void any
warranty.
Important:
Do not exceed the controller
electrical ratings. Exceeding controller electrical
ratings can result in permanent damage to the
controller and void any warranty.
Important:
Use copper conductors only. Make
all wiring in accordance with local, national, and
regional regulations.
Important:
Electrostatic discharge can
damage controller components. Use proper
electrostatic discharge precautions during
installation, setup, and servicing to avoid
damaging the controller.
For detailed information about configuring
and wiring an MS/TP Bus, FC Bus, or SA Bus,
refer to the
MS/TP Communications Bus Technical
Bulletin (LIT-12011034).
For detailed information
about wiring an N2 network, refer to the
N2
Communications Bus Technical Bulletin (LIT-636018)
.
Terminal blocks and bus ports
output terminal and bus port locations on the
CVM03050 controllers. Observe the following
guidelines when wiring a CVM controller.
Input and Output terminal blocks
On the CVM controller models, the input and output
terminal blocks are removable. The input terminals
are located on the side of the CVM near the FC and
SA terminal blocks. The output terminal blocks are
located on the side of the controller near the power
supply. For more information about I/O terminal
functions, requirements, and ratings, see Table 5.
FC bus terminal block (or N2 protocol as
required)
The FC Bus terminal block is a blue, removable, 4-
terminal plug that fits into a board-mounted pin
header.
Use a 3-wire twisted, shielded cable, as shown in
Figure 4, to wire the removable FC Bus terminal
block plugs on the CVM and other controllers in a
daisy-chain configuration. For more information
about FC Bus terminal functions, requirements, and
ratings, see Table 7.
M4-CVM03050 VAV Controllers Installation Guide
5