Submittal Sheet

TR21, TR22, TR23, AND TR24 WALL MODULES
3 63-1321ES—04
Module Dimensions
Fig. 2. Wall module dimensions in inches (mm).
Circuit Board
Fig. 3 illustrates the location of the terminal block and other features on the TR21, TR22, TR23, and TR24 models’ circuit board.
Table 2 on page 4 describes the terminal connections by model number.
Fig. 3. Wall module circuit board components.
WITH TEMPERATURE DIAL AND FAN SWITCH (TR22 AND TR23) WITHOUT TEMPERATURE DIAL OR FAN SWITCH (TR21 AND TR24)
3 (76.5)
4 9/16 (116)
4 3/4 (120)
7/8 (22)
1 (26.5)
M28139
7/8 (22)
60
70
80
M28140
TERMINAL
BLOCK
LONTALK CONNECTOR
DIP
SWITCH
S1
DIP
SWITCH
S2
DIP
SWITCH
S3
OVERRIDE
(BYPASS)
PUSHBUTTON
FAN SWITCH
111109876543212
HUMIDITY
SENSOR
(TR21-H AND TR23-H ONLY)
FACTORY
TEMPERATURE
SETPOINT
POTENTIOMETER
FACTORY
HUMIDITY
POTENTIOMETER
LED
S1 S2
S3
ONON
ON
3
TR21-H, TR22, TR23, AND TR24 MODELS
1
3
2
TR21-J MODEL
1
1432
LONTALK
CONNECTOR
(TR21-J MODEL ONLY)
TERMINAL
BLOCK
4
5
COMPONENTS VARY WITH MODEL. SEE TABLE 1.
NUMBER OF TERMINALS VARIES WITH MODEL.
FACTORY USE ONLY. DO NOT ATTEMPT TO ADJUST.
DIP SWITCH S1 IS USED FOR HUMIDITY MODELS (TR21-H AND TR23-H) ONLY.
SECOND SWITCH (2) ON DIP SWITCH S2 IS FOR FACTORY USE ONLY.
2
1
3
4
5
12
TR21 AND TR21-A
MODELS
1
2
123
12 12