MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS
EN1Z-1035GE51 R0420 24
WALL MODULES
The CLCM1T,2T,4T,5T,6T111 and CLCMTR40x/TR42x Wall
Modules can be used in conjunction with the controller to per-
form room temperature sensing, setpoint adjustment, fan
speed manual override, and occupancy override.
NOTE: The CLCMTR42x Wall Module must be version
1.00.3 or higher.
Further, the LED of the CLCM4T,5T,6T111 and the LCD of
the CLCMTR42x can be configured to provide information
about:
▪ any override of the controller by, e.g., pressing the
"occupancy" button of the wall module or receipt by the
controller of a BACnet MS/TP network command (see
section "CLCM Configured to Display Info on Overrides"
below);
▪ the controller's effective occupancy mode (see section
"CLCM Configured to Display Info on Occupancy" below).
NOTE: The intended use of the wall module's buttons must
be configured using COACH NX.
Table 12. Supported wall module functions
temp.
sensor
A)
setpt.
adjustment
A)
bypass
A)
fanspeed
override
A)
LED
CLCM1T11N
(T7460A1001)
X -- -- -- --
CLCM2T11N
(T7460B1009)
X X -- -- --
CLCM4T111
(T7460C1007)
X X X -- X
CLCM5T111
(T7460E1002)
X X X auto-0-1 X
CLCM6T111
(T7460F1000)
X X X auto-0-
1-2-3
X
A) Requires one UI supporting NTC.
NOTE: The CLMERL8N has ten UIs, only two of which
support NTC; this model is thus not suitable for the
hardwiring of wall modules requiring three UIs
supporting NTC.
See also corresponding Technical Literature listed in Table 13
on pg. 27.
Configuration of Wall Module LED / LCD
The LED of a CLCM4T,5T,6T111 Wall Module can be con-
figured (using COACH NX) to provide information about, e.g.,
overrides or effective occupancy modes. The LCD of the
CLCMTR42x can likewise be configured to display such
information.
CLCM Configured to Display Info on Overrides
The LED of a CLCM4T,5T,6T111 Wall Module connected to
the controller can be configured to indicate if an override has
been activated because either the wall module's override
button has been pressed or the controller has received a
BACnet MS/TP network command. Specifically, the following
modes are supported:
▪ NO OVERRIDE: If the wall module's LED is OFF, then no
override is currently in effect.
▪ OVERRIDE OCCUPANCY: If the wall module's LED is
ON continuously, then the wall module's override button
or a BACnet MS/TP network command has placed the
controller into the "occupied" or "override" mode (but if the
override button is again pushed or if a cancellation net-
work command is received or if the override time expires,
the controller will return to its scheduled occupancy mode,
and the wall module's LED will behave accordingly).
▪ OVERRIDE HOLIDAY: If the wall module's LED flashes 2
sec OFF and 1 sec ON, then the controller has received a
network command and been placed in the "holiday" mode.
▪ OVERRIDE UNOCCUPIED: If the wall module's LED
flashes once per sec, then the wall module's override
button or a network command has placed the controller
into the "unoccupied" mode (however, if the override
button is again pushed or if a cancellation BACnet MS/TP
network command is received, the controller will return to
its scheduled occupancy mode, and the wall module's
LED will behave accordingly).
▪ If the wall module's LED flashes twice per sec, then a
BACnet MS/TP network command has placed the con-
troller into either the "standby" or the "occupied" mode.
CLCM Configured to Display Info on Occupancy
The LED of a CLCM4T,5T,6T111 Wall Module connected to
the controller can also be configured to indicate the con-
troller's effective occupancy mode. Specifically, the following
modes are supported:
▪ UNOCCUPIED: If the wall module's LED is OFF, then the
controller is in the "unoccupied" mode.
▪ STANDBY: If the wall module's LED flashes once per sec,
then the controller has received a network command and
been placed in the "standby" mode.
▪ OCCUPIED: If the wall module's LED is ON, then the con-
troller is in the "occupied" mode.
▪ BYPASS: If the wall module's LED is ON continuously,
then the controller has received a network command and
been placed in the "bypass" mode.
▪ HOLIDAY: If the wall module's LED is OFF, then the con-
troller has received a network command and been placed
in the "holiday" mode.
LCD of a TR42x Configured to Display Info on Occupancy
The LCD of a CLCMTR42x connected to the controller can be
configured to display various texts and symbols to indicate
the effective occupancy mode of the controller. See the
following sections "Unoccupied Mode," "Standby Mode," and
"Occupied Mode."
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