CTR21, CTR22, CTR23, and CTR24 Wall Modules
SPECIFICATION DATA
FEATURES
The CTR21, CTR22, CTR23, and CTR24 family of wall
modules include:
• Models with setpoint adjustment.
• Models with occupied/unoccupied override (bypass)
with LED.
• Models with 3-position (auto/0/1) or 5-position
(auto/0/1/2/3 speed) fan switch.
• LONWORKS® bus jack on all models except the CTR21
and CTR21-A models.
• Operating range 45°F to 99°F (7°C to 37°C).
• Models (CTR22 and CTR23) with user-selectable
temperature setpoint dials in Fahrenheit, Celsius, and
Relative (- to +).
SPECIFICATIONS
Models: See Table 1 on page 2.
Construction: Two-piece construction, cover and internally
wired subbase. Field wiring 16 to 22 AWG (1.31-0.33 sq.
mm) connects to a terminal block in the subbase.
Mounting Options: All modules can be mounted on a
GENERAL standard two by four inch junction box or on a 60 mm
diameter junction box.
The CTR21, CTR22, CTR23, and CTR24 are a family of
Dimensions (H/W/D): See Fig. 2 on page 3.
direct wired wall modules for use with:
— Honeywell Excel 800, 600, 100, and 80 (all fully
Environmental Ratings:
programmable) controllers
— Excel 10 W7750, W7751a, W7752, and W7753 • Operating Temperature: 45°F to 99°F (7°C to 37°C).
controllers • Shipping Temperature: -40°F to 150°F (-40°C to
65.5°C).
— W7761 Controller
— Spyder Unitary Controllers: PUL, PVL • Relative Humidity: 5% to 95% non condensing
— ComfortPoint LON Controllers: CP-UL, CP-VL Humidity Output Accuracy: ±5% from 20–80% RH
All models have a space temperature sensor. Some models
have a temperature dial, setpoint adjustment, LONWORKS® Temperature Setpoint Ranges (CTR22 and CTR23 only):
bus jack, override (bypass) with LED, and fan switch. The The setpoint range is determined by the temperature knob
figure above is the CTR23 model. installed:
• 55°F to 85°F
• 13°C to 29°C
a TheCTR21, CTR22, CTR23, and CTR24 wall modules
are not compatible with W7751A,C,E,G Controllers.
50040122-003
CTR21, CTR22, CTR23, AND CTR24 WALL MODULES
Accessories: 50007298-001 (pack of 12) medium, cover
plate; 6-7/8 x 5 in. (175 x 127 mm). 80K
(Optional part, extra order needed)
70K
Approvals: CE; UL94 plastic enclosure; FCC Part 15, Class B
60K
Temperature Sensor 50K
CTR21, CTR22, CTR23, and CTR24 20K Ohm Non- 40K
linearized Sensor:
All models are furnished with a 20K Ohm non-linear NTC 30K
temperature sensor that follows a specific temperature 20K
20K OHM AT
77oF (25oC)
resistance curve. See Fig. 1.
10K
Honeywell controllers used with the CTR21, CTR22, CTR23
and CTR24 models employ an algorithm that provides
readings close to the actual temperature. Sensor accuracy 30 40 50 60 70 80 90 100 110
across the range of 55°F to 85°F (13°C to 29°C) is better 0 10 20 30 40 o
C
than ±0.36°F(±0.2°C). TEMPERATURE (DEGREES) M5874A
Fig. 1. Temperature vs. resistance for nonlinear sensor.
NOTE: The CTR21-A wall module model has two 20K Ohm
non-linear NTC temperature sensors in parallel, which
provide 10K NTC temperature sensing necessary for Wall Module Features
averaging. Table 1 illustrates the CTR21, CTR22, CTR23, and CTR24
wall module features and lists the existing Honeywell models
that they replace.
Table 1. CTR21-CTR24 Wall Module Features.a
Model Number Sensor Type Selectable Setpoint
Adjustment:
Honeywell Replaces 55°F to 85°F, Override
Wall Module Honeywell Sensor Element 13°C to 30°C, or Button LON Fan
Model Model Type Temp Relative (- to +) with LED Jack Switching
CTR21 T7770A1006 20K ohms
non-linear
CTR21-A T7770A3002 10K ohms
non-linear
for averaging only
CTR21-H n/a
CTR21-J T7770A2004
CTR22 T7770B1004
T7770B1020 n/a
T7770B1046
CTR23 T7770C1002
T7770C1028
T7770C1044 20K ohms
non-linear
CTR23-H n/a
CT24 T7770D1000
CTR22-F5 n/a 5 position
CTR23-F3 T7770E1023 3 position
CTR23-F5 T7770F1005 5 position
a
A check mark ( ) indicates the feature is included with the wall module.
NOTE: Refer to the CTR21, CTR22, CTR23, and CTR24 Wall Modules – Installation Instructions, form 50040121-001, for wiring
diagrams.Some features may not be available with all controllers.
50040122-003 2
CTR21, CTR22, CTR23, AND CTR24 WALL MODULES
Module Dimensions
WITH TEMPERATURE DIAL AND FAN SWITCH (CTR22 AND CTR23) WITHOUT TEMPERATURE DIAL OR FAN SWITCH (CTR21 AND CTR24)
3 (76.5)
4 3/4 (120)
4 9/16
70
7/8 (22) 1
7/8 (22)
M28139
Fig. 2. Wall module dimensions in inches (mm).
Circuit Board
Fig. 3 illustrates the location of the terminal block and other features on the CTR21, CTR22, CTR23, and CTR24 models’ circuit
board.Table 2 on page 4 describes the terminal connections by model number.
CTR21 AND CTR21-A
CTR21-J MODEL 1 MODELS 1 CTR21-H, CTR22, CTR23, AND CTR24 MODELS 1
TERMINAL 3
BLOCK FACTORY
1 3 4 1 2 HUMIDITY
2
POTENTIOMETER
2
TERMINAL
BLOCK
1 2 4 5 6 7 8 9 10 11 12
DIP
SWITCH 4
3
S1
FACTORY ON ON
TEMPERATURE DIP
SETPOINT 1 2 1 2 SWITCH 5
LONTALK POTENTIOMETER S1 S2 S2
CONNECTOR ON
(CTR21-J MODEL ONLY) DIP
HUMIDITY 1 2 SWITCH
3 S3
SENSOR
(CTR21-H AND CTR23-H ONLY)
1 COMPONENTS VARY WITH MODEL. SEE TABLE 1. LED
2 NUMBER OF TERMINALS VARIES WITH MODEL.
OVERRIDE
3 FACTORY USE ONLY. DO NOT ATTEMPT TO ADJUST. (BYPASS)
PUSHBUTTON
4 DIP SWITCH S1 IS USED FOR HUMIDITY MODELS (CTR21-H AND CTR23-H) ONLY.
5 SECOND SWITCH (2) ON DIP SWITCH S2 IS FOR FACTORY USE ONLY.
LONTALK CONNECTOR FAN SWITCH M28140
Fig. 3. Wall module circuit board components.
3 50040122-003
CTR21, CTR22, CTR23, AND CTR24 WALL MODULES
Table 2. CTR21, CTR22, CTR23, and CTR24 Wall Module Terminal Connections.a
Terminal Usage and Number (See Fig. 3 on page 3)
When LON LON 18-24
Wall Used With SETPT Override LED Override
Module Controller GNDb Sensor +c – (Setpoint) Return LED Return / Fan Override Vacd
Model Model(s) 1 2 3 4 5 6 7 8 9 10 11 12
CTR21
CTR21-A
W7761
CTR21-H
CTR21-J
CTR22-F5 • W7750, Fan
W7751,
CTR23 W7752,
and
W7753
• Excel 800,
CT24 600, 100,
and 80
CTR23
CTR23-F3 Fan
CTR23-F5 W7753 Fan
CTR23-H
CT24
CTR23 • W7750, Override
W7751,
Override
CTR23-F3 and
/ Fan
W7752
Override
CTR23-F5 • Spyder:
PUL, PVL / Fan
CTR23-H Override
CT24 Override
Excel 800, Override
CTR23-F3
600, 100, / Fan
and 80 Override
CTR23-F5 with Fan / Fan
CTR23 Excel 800, Override
600, 100,
CTR23-H Override
and 80
CT24 without Fan Override
a A check mark ( ) indicates the terminal is used in this wall module and controller configuration.
b Earth Ground.
c
LonWorks® terminals (+ and –) are polarity insensitive.
d
Power coming from the controller to power the humidity sensor.
50040122-003 4
CTR21, CTR22, CTR23, AND CTR24 WALL MODULES
Communications DIP Switches S2 and S3
All wall modules (except the CTR21 and CTR21-A models) See Fig. 3 on page 3 for location of these DIP switches. To
have a LONMARK® bus communications port. If needed, the set these DIP switches, refer to the CTR21, CTR22, CTR23,
jack plug must be removed in the field, and terminals 3 and 4 and CTR24 Wall Modules – Installation Instructions, form
wired according to the installation instructions. 50040121-001.
LONMARK® bus communication is not applicable when the
wall modules are used with Excel 800/600/100/80 CTR23 and CTR24 Wall Module Override
Controllers. The LONMARK® bus is insensitive to polarity, (Bypass) Pushbutton and LED Operation
minimizing installation errors due to mis-wiring.
The recommended wire size for the LONMARK® bus is When Used With Excel 10 Controllers:
Level IV, 22 AWG (0.34 sq.mm) plenum or non-plenum rated, The Excel 10 controllers (W7750, W7751, W7752, and
unshielded, twisted pair, solid conductor wire. 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
CTR22 and CTR23 Setpoint Adjustment shown in Table 5 and illustrated in Fig. 5 on page 6. The
For the CTR22 and CTR23 Wall Modules with a setpoint override (bypass) LED displays the override status of the
adjustment, the controller must be programmed for the values controller.
in Table 3.
Table 3. Setpoint Values.
Setpoint Value Program Setting
55°F (13°C) 2.773 V
65°F (18°C) 2.148 V
70
75°F (24°C) 1.345 V
85°F (29°C) 0.43 V
LED
1
Humidity Settings (DIP switch S1) OVERRIDE (BYPASS)
PUSHBUTTON
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 1 LED AND OVERRIDE (BYPASS) PUSHBUTTON AVAILABLE
S1. ONLY ON THE CTR23 AND CTR24 MODELS.
M28144
NOTE: These switch settings apply only to the CTR21-H and
CTR23-H models. Fig. 4. LED and override pushbutton locations
(CTR23-F Wall Module shown).
To change the setting, first disconnect the power, then set
SW1 and SW2 according to Table 4.
Table 5. Wall Module Operation.
The switch settings are used to indicate the sensing control
between the humidity sensor on the wall module and the Pushbutton Held Down Controller Model LED Status
connected controller model. 0 to 1 second No override Off
1 to 4 seconds Timed occupied On
override
Table 4. DIP Switch S1 Settings.
4 to 7 seconds Unoccupied override Single blink per second
Individual
Switches Longer than 7 seconds No override Off
Sensing
Wall Module Model Control 1 2 not applicable Continuous occupied Two blinks per second
0-10 Vdc OFF OFF overridea
CTR21-H a
0-5 Vdc OFF ON Remote function, which is generated from the network.
CTR23-H
4-20 mA ON OFF
5 50040122-003
CTR21, CTR22, CTR23, AND CTR24 WALL MODULES
When Used With Excel 10 Controllers:
RESET
The Excel 10 Controllers (W7750, W7751, W7752, and
W7753) can be programmed so that the fan speed switch and
NOT ASSIGNED override button function the way that the application engineer/
(LED OFF)
programmer wants. See Table 6 for controller-programming
resistances. Switch 1 on Dip Switch S2 adds 10k Ohms
PRESS FOR PRESS FOR ONE resistance when OPEN (for Excel 800-80 controllers) and
LESS THAN TO FOUR SECONDS BYPASS
ONE SECOND TIMEOUT
removes it when CLOSED (for Excel 10 controllers).
OVERRIDE
OCCUPIED
(LED ON)
Table 6. Program Settings for Wall Modules with
Fan Switch using Excel 10 Controllers.
PRESS FOR FOUR For Switch Position Resistance (Ohms) Comment
TO SEVEN SECONDS
Auto 1861 ±119 Left most position
PRESS FOR UNOCCUPIED 0 2686 ±127 Fan Off position
LESS THAN (LED BLINK)
ONE SECOND 1 3866 ±139
2 304 ±130
PRESS FOR
MORE THAN
3 460 ±146 Right most position
SEVEN SECONDS M28145
Override button closed Closed circuit
Fig. 5. Override pushbutton operation.
When Used With Excel 800/600/100/80 Controllers:
Excel 800/600/100/80 Controllers can be programmed so that
When Used With Excel 800/600/100/80 Controllers: the fan speed switch and override button function the way that
The application engineer/programmer can program the the application engineer/programmer wants. See Table 7 for
override (bypass) and LED to operate in any manner desired. controller-programming resistances. Switch 1 on Dip Switch
The override (bypass) input is a dry contact, normally open, S2 adds 10k Ohms resistance when OPEN (for Excel 800-80
momentary digital input when the wall module does not have controllers) and removes it when CLOSED (for Excel 10
a fan switch. When a fan speed switch (basically a series of controllers).
resistances based on fan switch position) is present, the
override button is an analog input. See Table 7 for
resistances. Table 7. Program Settings for Wall Modules with
Fan Switch using Excel 800/600/100/80 Controllers.
When Used With T7350 Thermostat: For Switch Position Resistance (Ohms) Comment
CTR21, CTR21-A, CTR21-H, CTR22, CTR23, and CTR24 are
the models compatible with the T7350 thermostat. When using Auto 11.861K ±119 Left most position
with the T7350 thermostat be sure to use the relative +/- offset 0 12.686K ±127 Fan Off position
knob only. The Celsius and Fahrenheit knobs will not work 1 13.866K ±139
properly with the T7350 Thermostat.
2 13.04K ±130
3 14.60K ±146 Right most position
CTR22-F5, CTR23-F3, and CTR23-F5 Wall
Override button closed 10K ±100
Module Fan Switch
With the switch in the far left position (Auto), the fan
automatically runs at the speed determined by the controller
temperature control algorithm.
With the switch in the 0 position, the fan is off. Position 1 is fan
speed 1, etc.
The wall module fan speed switch overrides the temperature
control algorithm.
50040122-003 6
CTR21, CTR22, CTR23, AND CTR24 WALL MODULES
7 50040122-003
CTR21, CTR22, CTR23, AND CTR24 WALL MODULES
LONWORKS® is a registered trademark of Echelon® Corporation.
LONMARK® and the LonMark Logo are trademarks of the LonMark Association.
Automation and Control Solutions
Honeywell International Inc. Honeywell(Tianjin) Limited
1985 Douglas Drive North 158,NanHai Road,TEDA
Golden Valley, MN 55422 Tianjin,300457,PRC
customer.honeywell.com
® U.S. Registered Trademark
© 2008 Honeywell International Inc.
50040122-003
