The BACnet MS/TP LYNX controllers are designed to control
HVAC equipment.
LYNX controllers provide many options and advanced system
features that allow state-of-the-art commercial building
control. Each LYNX controller is programmable and configurable using the COACH
LYNX BACnet controllers require the LYNX BACnet Programmable Feature to be licensed in COACH
LYNX controllers are designed for use in VAV (Variable Air
Volume) and Unitary HVAC control applications. Each controller contains a host microcontroller to run the main HVAC
application and a second microcontroller for BACnet MS/TP
network communications. Each controller has flexible,
universal inputs for wall modules, digital inputs, and a mix of
analog and digital triac outputs (see Table 1). The models
CLLYVB6436AS, CLLYVB0000AS, and CLLYVB4022AS
include an actuator.
AX
software.
AX
.
Table 1. Controller configurations
model type
CLLYUB1012S unitary 1(A 0 1 2 NO NO
CLLYUB4024S unitary 4(A 0 2 4 NO NO
CLLYUB6438S unitary 6 4 3 8 NO NO
CLLYVB0000AS VAV 0 0 0 0 YES YES
CLLYVB4022AS VAV 4(A 0 2 2 YES YES
CLLYVB4024NS VAV 4(A 0 2 4 YES NO
CLLYVB6436AS VAV 6 4 3 6 YES YES
CLLYVB6438NS VAV 6 4 3 8 YES NO
One Universal Input (UI-1*) is selectable as a fast digital pulse meter.
All of the LYNX controllers communicate via an EIA-485 BACnet MS/TP communication network, capable of baud rates of
between 9.6 and 115.2 kbits/sec.
The LYNX controllers are field-mountable to either a panel or a DIN rail.
One Universal Input (UI-1*) is selectable as a fast digital pulse
meter.
NTC 20kOhm -40 ... +93 °C
PT1000
(IEC751 3850)
Controller
closure
-40 ... +93 °C
0 … 10 Vdc
OpenCircuit 3000
ClosedCircuit < 3000
Min. pulse width: 20 ms
NTC 20kOhm are recommended for use with these controllers, due to improved resolution and accuracy when
compared to the PT1000.
BEFORE INSTALLATION
The controller is available in eight models (see Table 1).
Before installing the controller, review the power, input, and
output specifications in section “Technical Data”.
Hardware driven by Triac outputs must have a min.
current draw, when energized, of 25 mA and a max.
current draw of 500 mA.
Hardware driven by the analog current outputs must have
a max. resistance of 550 , resulting in a max. voltage of
11 V when driven at 20 mA. If resistance exceeds 550 ,
voltages up to 18 Vdc are possible at the analog output
terminal.
WARNING
Electrical Shock Hazard.
Can cause severe injury, death or property
damage.
To prevent electrical shock or equipment damage,
disconnect power supply before beginning wiring or
making wiring connections.
INSTALLATION
The controller must be mounted in a position that allows
clearance for wiring, servicing, removal, connection of the
BACnet MS/TP Molex connector and access to the MS/TP
MAC address DIP switches (see Fig. 12).
The controller may be mounted in any orientation.
IMPORTANT
Avoid mounting in areas where acid fumes or other
deteriorating vapors can attack the metal parts of the
controller, or in areas where escaping gas or other
explosive vapors are present. See Fig. 4 and Fig. 6 for
mounting dimensions.
EN0Z-0959GE51 R0615 2
LYNX BACnet PROGRAMMABLE, VAV/UNITARY CONTROLLERS – PRODUCT DATA
In the case of the AS-models, first the actuator and then the
controller is mounted. For the other models, see section
“Mount Controller” on page 4 to begin the installation.
Mounting Actuator onto Damper Shaft (ASModels)
The AS-models include the direct-coupled actuator with
DECLUTCH button, which is shipped hard-wired to the
controller.
The actuator mounts directly onto the VAV box damper shaft
and has up to 5 Nm torque, 90° stroke, and 90-sec timing at
60 Hz. The actuator is suitable for mounting onto a 10 to 13
mm square or round VAV box damper shaft. The min. VAV
box damper shaft length is 40 mm.
The two mechanical end-limit set screws control the amount
of rotation from 12° to 95°. These set screws must be
securely fastened in place. To ensure tight closing of the
damper, the shaft adapter has a total rotation stroke of 95°
(see Fig. 1).
NOTE 1: The actuator is shipped with the mechanical end
NOTE 2: The DECLUTCH button, when pressed, allows you
LIMIT SET SCREWS (2)
limit set screws set to 95° of rotation. Adjust the
two set screws closer together to reduce the
rotation travel. Each “hash mark” indicator on the
bracket represents approximately 6.5° of rotation
per side.
to rotate the universal shaft adapter (see Fig. 1).
UNIVERSAL SHAFT
UNIVERSAL SHAFT
ADAPTER
MECHANICAL END
DECLUTCH
BUTTON
CLAMPING BOLTS (2)
DAMPER
DAMPER SHAFT
ROTATES CW
TO OPEN
Fig. 2. Damper with 90° clockwise rotation to open
IMPORTANT
Mount actuator flush with damper housing or add a
spacer between the actuator mounting surface and
damper box housing.
Before Mounting Actuator onto Damper
Shaft (AS-Models)
Tools required:
Phillips #2 screwdriver - end-limit set screw adjustment
8 mm wrench - centering clamp
Before mounting the actuator onto the VAV box damper shaft,
determine the following:
1. Determine the damper shaft diameter. It must be
10…13 mm.
2. Determine the length of the damper shaft. If the length of
the VAV box damper shaft is less than 40 mm, the
actuator cannot be used.
3. Determine the direction the damper shaft rotates to open
the damper (CW or CCW) (see Fig. 3). Typically, there is
an etched line on the end of the damper shaft indicating
the position of the damper. In Fig. 2, the indicator shows
the damper open in a CW direction.
4. Determine the damper full opening angle (45, 60, or 90°).
In Fig. 2, the damper is open to its full open position of
90°.
TYPE A DAMPER
AIR
FLOW
CW TO OPEN, CCW TO CLOSE
TYPE B DAMPER
Fig. 1. Floating actuator
IMPORTANT
Determine the damper rotation and opening angle prior to
installation. See Fig. 2 and Fig. 3 for examples.
Fig. 3. Determining rotation direction (CW or CCW) for
AIR
FLOW
CCW TO OPEN, CW TO CLOSE
damper opening
EN0Z-0959GE51 R0615
3
LYNX BACNET PROGRAMMABLE, VAV/UNITARY CONTROLLERS – PRODUCT DATA
A
A
V
A
V
V
A
V
Mounting Actuator Onto Damper Shaft (ASModels)
The unit is shipped with the actuator set to rotate open in the
clockwise (CW) direction to a full 95°. The extra 5° ensures a
full opening range for a 90° damper.
The installation procedure varies depending on the damper
opening direction and angle:
1) If the damper rotates CW to open, and the angle of the
damper open-to-closed is 90°:
a) Manually open the damper fully (rotate CW).
b) Using the DECLUTCH button, rotate the universal
shaft adapter fully CW.
c) Mount the actuator to the VAV damper box and shaft.
d) Tighten the two bolts on the centering clamp (8 mm
wrench; 8...10 Nm torque). When the actuator closes,
the damper rotates CCW 90° to fully close.
2) If the damper rotates CW to open, and the angle of the
damper open-to-closed is 45 or 60°:
a) Manually open the damper fully (rotate CW).
b) The actuator is shipped with the mechanical end-limits
set at 95°. Adjust the two mechanical end-limit set
screws to provide the desired amount of rotation.
Adjust the two set screws closer together to reduce the
rotation travel.
c) Tighten the two mechanical end-limit screws (Phillips
#2 screwdriver; (3.0-3.5 Nm torque).
d) Using the DECLUTCH button, rotate the universal
shaft adapter fully CW.
e) Mount the actuator to the VAV damper box and shaft.
f) Tighten the two bolts on the centering clamp (8 mm
wrench; 8...10 Nm torque).
g) When the actuator closes, the damper rotates CCW
either 45 or 60° to fully close.
3) If the damper rotates CCW to open, and the angle of the
damper open-to-closed is 90°:
a) Manually open the damper fully (rotate CCW).
b) Using the DECLUTCH button, rotate the universal
shaft adapter fully CCW.
c) Mount the actuator to the damper box and shaft.
d) Tighten the two bolts on the centering clamp (8 mm
wrench; 8...10 Nm torque). When the actuator closes,
the damper rotates CW 90° to fully close.
4) If the damper rotates CCW to open, and the angle of the
damper open-to-closed is 45 or 60°:
a) Manually open the damper fully (rotate CCW).
b) The actuator is shipped with the mechanical end-limits
set at 95°. Adjust the two mechanical end-limit set
screws to provide the desired amount of rotation.
Adjust the two set screws closer together to reduce the
rotation travel.
c) Tighten the two mechanical end-limit screws (Phillips
#2 screwdriver; (3.0-3.5 Nm torque).
d) Using the DECLUTCH button, rotate the universal
shaft adapter fully CCW.
e) Mount the actuator to the VAV damper box and shaft.
f) Tighten the two bolts on the centering clamp (8 mm
wrench; 8...10 Nm torque).
g) When the actuator closes, the damper rotates CW
either 45 or 60° to fully close.
IMPORTANT
Special precautions must be taken for dampers that
open in a CCW direction. The actuator is shipped with
its rotation direction set to CW to open, which applies
to the damper direction in steps 1 and 2 above. If the
damper shaft rotates in the CCW direction to open, the
controller software must be programmed to change the
rotation to “Reverse to Open,” which applies to the
damper direction in steps 3 and 4 above.
IMPORTANT
To avoid the possibility of over-pressurizing the duct
work on fan start-up, it is advisable to leave the
dampers in an open position after installation. To
prevent over-pressurization in the duct work on fan
start-up, use the DECLUTCH button (see Fig. 1) to
open the box damper on powered-down controllers. To
declutch, press and hold the DECLUTCH button, thus
disengaging the motor. Turn the damper shaft until the
damper is open and then release the DECLUTCH
button. When power is restored to the controller, the
controller synchronizes the damper actuator, so that
the damper is in the correct position upon start-up.
Mount Controller
NOTE:The controller may be wired before mounting to a
Terminal blocks are used to make all wiring connections to
the controller. Attach all wiring to the appropriate terminal
blocks (see section “Wiring” on page 6).
See Fig. 4 and Fig. 6 for panel mounting dimensions. See
Fig. 7 for DIN rail mounting.
146
Fig. 4. Duct mounting, dimensions in mm (AS-models)
The controller can be mounted in any orientation. Ventilation
openings are designed into the cover to allow proper heat
dissipation, regardless of the mounting orientation.
DIN Rail Mounting (S- and NS-models)
To mount the S- and NS-models onto a DIN rail, see Fig. 7
and perform the following steps:
1. Holding the controller with its top tilted in towards the DIN
rail, hook the two top tabs on the back of the controller
onto the top of the DIN rail.
2. Push down and in to snap the two bottom flex connectors
of the controller onto the DIN rail.
IMPORTANT
To remove the controller from the DIN rail, perform the
following:
1. Push straight up from bottom to release top tabs.
2. Rotate the top of the controller out towards you and
pull the controller down and away from the DIN rail to
release the bottom flex connectors.
Fig. 6. Panel mounting, dimensions in mm (S- and NS-
models)
NOTE: The controller is designed so that the cover does
not need to be removed from the base plate for
either mounting or wiring.
The controller mounts using four screws inserted through the
corners of the base plate. Fasten securely with four screws.
BOTTOM FLEX
CONNECTORS
Fig. 7. Controller DIN rail mounting (S- and NS-models)
Piping (AS- and NS-models)
Air Flow Pick-Up
For AS- and NS-models, connect the air flow pickup to the
two restrictor ports on the controller (see Fig. 8).
NOTE 1: Use tubing with 6 mm outside diameter and 1 mm
NOTE 2: Always use a fresh cut on the end of the tubing that
Connect the high-pressure or upstream tube to the plastic
restrictor port labeled (+), and the low-pressure or downstream tube to the restrictor port labeled (-). See labeling in
Fig. 8. When twin tubing is used from the pickup, split the
pickup tubing a short length to accommodate the connections.
wall thickness.
connects to the air flow pickups and the restrictor
ports on the controller.
EN0Z-0959GE51 R0615
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