Carrier VVT 33ZC, Installation, Start-Up And Configuration Instructions

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Install Field-Supplied Actuators —
Follow the damp-
er manufacturers recommended installation instructions with
the following recommendations.
Belimo Multi-Function technology actuators may be ordered
direct from Belimo. The following accessory actuators may be
used instead of the integrated actuator:
• NM24-MFT US P-30002 — 70 in.-lb actuators with
floating point control and 0 to 10 vdc feedback.
• AM24-MFT US P-30002 — 160 in.-lb actuators with
floating point control and 0 to 10 vdc feedback.
The following actuators may be used as linked actuators.
Up to four actuators may be linked to the main actuator:
• LM24-MFT US P-10002 — 35 in.-lb actuators with 0 to
10 vdc control and 0 to 10 vdc feedback.
• NM24-MFT US P-10002 — 70 in.-lb actuators with 0 to
10 vdc control and 0 to 10 vdc feedback.
• AM24-MFT US P-10002 — 160 in.-lb actuators with 0
to 10 vdc control and 0 to 10 vdc feedback.
FLOATING POINT HIGH-TORQUE ACTUATORS —
The field-supplied floating point high-torque actuators are
multi-function technology actuators intended for applications
where higher torque is needed for bypass operation. These
actuators would replace the integrated actuator on the bypass
controller. The actuators have three wires for power and
control and one 0-10VDC feedback wire to send a signal to the
bypass controller and any linked actuators. The three control
wires are 1(BLK), 2(RED), and 3(WHT). The 1(BLK) and
2 (RED) wires provide power to the actuator. These should be
wired to the same power source as the bypass controller
making sure wire 2 (RED) connects to J1-1 on the power plug
of the Bypass controller and wire 1 (BLK) connects to J5-2 the
common of the Bypass Controller power. See Fig. 7 and 8 for
wiring.
Polarity of the actuator and bypass controller power must be
the same for proper operation and to prevent damage to the
devices. A 1N4004 or 1N4007 diode must be placed across the
CCW and CW terminals of the bypass controller. The end of
the diode with the silver band tip (positive end) should be
placed in the CCW terminal along with Wire 3(WHT). The
other end of the diode should be placed in the CW terminal
with the actuator switch in the CW or default position. This
will make the damper rotate CCW when the CCW terminal is
energized and CW when the CW terminal is energized. For
reverse rotation the actuator switch may be changed to the
CCW position.
LINKED ACTUATORS — Field-supplied linked actuators
may be used to link to the bypass controller actuator. Install the
actuators per the manufacturer’s directions. Provide power for
the linked actuators by wiring 24 vac to the 1(BLK) and 2
(RED) wires. Maintain polarity if more than one actuator is
powered by the same power supply. Make sure the direction
rotation switches on the linked actuators are set to CW. Wire
the wire 3 (WHT) of the linked actuator(s) to the wire 5 (GRN)
of the controlling actuator. The linked actuator will then track
to the same damper position as the controlling actuator. See
Fig. 8-10 for wiring.
Linked actuators may be used to control off the integrated
actuator of the bypass controller actuator. Install the actuators
per the manufacturer’s directions. Provide power for the linked
actuators by wiring 24 vac to the 1 (BLK) and 2 (RED) wires.
Maintain polarity if more than one actuator is powered by the
same power supply. Make sure the direction rotation switches
on the linked actuators are set to CW. Connect wire 3 (WHT)
of the linked actuator to J4-7(DMPPOS).
Damper Stops —
For clockwise closed installations the
damper stop on the right side of the damper shaft is left at the
full clockwise position. The stop on the left side of the shaft
must be moved to stop the actuator at the full open position for
the damper. For example the Carrier round dampers rotate
45 degrees. Slide the left stop up to the 45 degree mark. Press
the actuator release button and rotate the damper CCW all the
way to the stop. The damper blade indicator should indicate
the damper is full open. Wire 5 (white) should be wired to
J4-7(DMPPOS). See Fig. 2.
NOTE: The rotation switch should be in the CW position for
correct feedback for this application. Reverse the rotation by
configuring the bypass controller for clockwise open and do
not change the switch from the CW position.
Connect the Carrier Network Communica-
tion Bus —
The bypass controllers connect to the bus in a
daisy chain arrangement. The bypass controller may be in-
stalled on a primary bus or on a secondary bus from the prima-
ry bus. Connecting to a secondary bus is recommended.
At any baud (9600, 19200, 38400 baud), the number of con-
trollers is limited to 239 zones maximum. Bus length may not
exceed 4000 ft, with no more than 60 total devices on any
1000-ft section. Optically isolated RS-485 repeaters are re-
quired every 1000 ft.