Honeywell CentraLine LYNX LON CLLYUL1012S Product Data page 6

LYNX LON PROGRAMMABLE, VAV/UNITARY CONTROLLERS – PRODUCT DATA
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.
TOP TABS
BOTTOM FLEX
CONNECTORS
Fig. 8. Controller DIN rail mounting (CLLYUL1012S,
CLLYUL4024S, and CLLYUL6438S and CLLYVL6438NS)
Piping (CLLYVL0000AS, CLLYVL4022AS,
and CLLYVL6436AS, CLLYVL6438NS)
Air Flow Pick-Up
For CLLYVL0000AS, CLLYVL4022AS, and CLLYVL6436AS
and CLLYVL6438NS, connect the air flow pickup to the two
restrictor ports on the controller (see Fig. 9).
NOTE 1: Use tubing with 6 mm outside diameter and 1 mm
wall thickness.
NOTE 2: Always use a fresh cut on the end of the tubing that
connects to the air flow pickups and the restrictor
ports on the controller.
Connect the high-pressure or upstream tube to the plastic
restrictor port labeled (+), and the low-pressure or down-
stream tube to the restrictor port labeled (-). See labeling in
Fig. 9. When twin tubing is used from the pickup, split the
pickup tubing a short length to accommodate the connections.
NOTE 1: If controllers are mounted in unusually dusty or
dirty environments, an inline, 5-micron disposable
air filter (use 5-micron filters compatible with
pneumatic controls) is recommended for the high-
pressure line (marked as +) connected to the air
flow pickup.
NOTE 2: The tubing from the air flow pickup to the controller
should not exceed 1 m. Any length greater than
this will degrade the flow sensing accuracy.
EN0Z-0957GE51 R0615
NOTE 3: Use caution when removing tubing from a con-
DIN RAIL
Power
Before wiring the controller, determine the input and output
device requirements for each controller used in the system.
Select input and output devices compatible with the controller
and the application. Consider the operating range, wiring
requirements, and the environment conditions when selecting
input/output devices. When selecting actuators for modulating
applications, consider using floating control. In direct digital
control applications, floating actuators will generally provide
control action equal to or better than an analog input actuator
for lower cost.
Determine the location of controllers, sensors, actuators, and
other input/output devices and create wiring diagrams. See
Fig. 16 through Fig. 22 for typical controller wiring con-
figurations.
The application engineer must review the control job require-
ments. This includes the sequences of operation for the con-
troller, and for the system as a whole. Usually, there are
variables that must be passed between the controller and
other controllers that are required for optimum system wide
operation. Typical examples include the outdoor air tem-
perature, the demand limit control signal, and the smoke
control mode signal.
It is important to understand these interrelationships early in
the job engineering process, to ensure proper implementation
when configuring the controllers. See the controller
Application Guides.
Power Budget
A power budget must be calculated for each device to deter-
mine the required transformer size for proper operation. A
power budget is simply the sum of the max. power draw
ratings (in VA) of all the devices to be controlled. This
includes the controller itself and any devices powered from
6
nector. Always pull straight away from the con-
nector or use diagonal cutters to cut the edge of
the tubing attached to the connector. Never
remove by pulling at an angle.
AIR FLOW
PICK-UP
P
CLLYVL0000AS, CLLYVL4022AS,
CLLYVL6436AS, and CLLYVL6438NS
Fig. 9. Air flow pick-up connections
RESTRICTOR
PORTS
2 2 2 2 2 2 2 2 2 2 3
1 2 3 4 5 6 7 8 9 0 1