Submittal Sheet

TR21, TR22, TR23, AND TR24 WALL MODULES
5 63-1321ES—04
Communications
All wall modules (except the TR21 and TR21-A models) have
a L
ONMARK® bus communications port. If needed, the jack
plug must be removed in the field, and terminals 3 and 4 wired
according to the installation instructions.
L
ONMARK® bus communication is not applicable when the
wall modules are used with Excel 600/500/100/80
Controllers. The LONMARK® bus is insensitive to polarity,
minimizing installation errors due to mis-wiring.
The recommended wire size for the L
ONMARK® bus is
Level IV, 22 AWG (0.34 sq.mm) plenum or non-plenum rated,
unshielded, twisted pair, solid conductor wire.
TR22 and TR23 Setpoint Adjustment
For the TR22 and TR23 Wall Modules with a setpoint
adjustment, the controller must be programmed for the values
in Table 3 and Table 4.
Humidity Settings (DIP switch S1)
The humidity sensing control mode is set with this 2-position
DIP switch. Refer to Fig. 3 on page 3 for location of DIP switch
S1.
NOTE: These switch settings apply only to the TR21-H and
TR23-H models.
To change the setting, first disconnect the power, then set
SW1 and SW2 according to Table 5.
The switch settings are used to indicate the sensing control
between the humidity sensor on the wall module and the
connected controller model.
DIP Switches S2 and S3
See Fig. 3 on page 3 for location of these DIP switches. To set
these DIP switches, refer to the TR21, TR22, TR23, and TR24
Wall Modules – Installation Instructions, form 62-0267.
TR23 and TR24 Wall Module Override
(Bypass) Pushbutton and LED Operation
When Used With Excel 10 Controllers:
The Excel 10 controllers (W7750, W7751, W7752, and
W7753) provide timed occupied and unoccupied temperature
setpoints for the Wall Module, see Fig. 4. The override
pushbutton is used to change the controller into the modes
shown in Table 6 and illustrated in Fig. 5 on page 6. The
override (bypass) LED displays the override status of the
controller.
Fig. 4. LED and override pushbutton locations
(TR23-F Wall Module shown).
Table 3. Setpoint Values.
Setpoint Value Program Setting
55°F (13°C) 2.773 V
65°F (18°C) 2.148 V
75°F (24°C) 1.345 V
85°F (29°C) 0.43 V
Table 4. Wall Module Setpoint Configuration.
Model Setpoint Resistance (Ohms)
°F Absolute 55°F 9574
85°F 1426
Relative -9°F offset from 70°F 9574
+9°F offset from 70°F 1426
°C Absolute 12°C 9945
30°C 1150
Table 5. DIP Switch S1 Settings.
Wall Module Model
Sensing
Control
Individual
Switches
12
TR21-H
TR23-H
0-10 Vdc OFF OFF
0-5 Vdc OFF ON
4-20 mA ON OFF
Table 6. Wall Module Operation.
Pushbutton Held Down Controller Model LED Status
0 to 1 second No override Off
1 to 4 seconds Timed occupied
override
On
4 to 7 seconds Unoccupied override Single blink per second
Longer than 7 seconds No override Off
not applicable Continuous occupied
override
a
a
Remote function, which is generated from the network.
Two blinks per second
60
70
80
M28144
LED
OVERRIDE (BYPASS)
PUSHBUTTON
LED AND OVERRIDE (BYPASS) PUSHBUTTON AVAILABLE
ONLY ON THE TR23 AND TR24 MODELS.
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