KMC Controls CTE-5202 Application Manual
Analog Electronic Thermostat w/ LCD Display
Applications Guide
CTE-5202
Contents
General Information (All Applications) .................................................................................. 3
Important Notices ..........................................................................................................................................................4
Accessories ....................................................................................................................................................................4
Connection and Configuration .......................................................................................................................................5
Connections ...............................................................................................................................................................5
External Input (AI1) ....................................................................................................................................................5
Change Setpoint .........................................................................................................................................................6
Change Configuration ................................................................................................................................................6
Sequences ..................................................................................................................................................................7
Cross-References ............................................................................................................................................................8
CTE-5202 Troubleshooting ...........................................................................................................................................10
Display Is Blank ........................................................................................................................................................10
Setpoint Is Not Maintained ......................................................................................................................................10
Temperature Reading Is Incorrect ............................................................................................................................10
Wiring Issues ............................................................................................................................................................10
Single-Zone Proportional Heating and Cooling Applications ............................................... 11
Heating, RA and DA .....................................................................................................................................................12
Chilled Beam Cooling ..................................................................................................................................................13
Chilled Beam 4-Pipe Heating and Cooling ...................................................................................................................14
Chilled Beam 2-Pipe Heating and Cooling with Changeover ........................................................................................15
Pressure Dependent VAV Applications with MEP-4xx2 ........................................................ 16
Cooling or Heating .......................................................................................................................................................17
Auto and Override (to Fully Closed) ............................................................................................................................18
Other Applications .......................................................................................................................................................18
CTE-5202 Analog Electronic Thermostat w/ LCD Display 1 Applications Guide, AN0912A Rev. D
Pressure Independent VAV Applications with CSP-4702 ...................................................... 19
Replacing a CSP-5001/5002 .........................................................................................................................................20
Replacing a CEP-4xxx or CSP-40xx/42xx/44xx/46xx ...................................................................................................21
Cooling or Heating .......................................................................................................................................................22
Auto and Override (to Fully Open) ..............................................................................................................................23
Cooling and 3-Stage Reheat .........................................................................................................................................24
Cooling with 3-Stage Reheat and Night Setback/Setup ................................................................................................25
Cooling with Heating Changeover ...............................................................................................................................26
Cooling with Heating Changeover and Electric Reheat ................................................................................................27
Cooling with Heating Changeover and Hot Water Reheat ...........................................................................................28
Cooling with Hot Water Reheat ...................................................................................................................................29
Fan Induction with 2-Stage Electric Heat .....................................................................................................................30
Dual Duct, Minimum Air from Cold Duct ....................................................................................................................31
Pressure Independent VAV Applications with CSP-5001/5002 ............................................. 32
Cooling or Heating .......................................................................................................................................................33
Auto and Override (to Fully Closed or Fully Open) ......................................................................................................34
Cooling and 3-Stage Reheat .........................................................................................................................................35
Cooling with 3-Stage Reheat and Night Setback/Setup ................................................................................................36
Cooling with Heating Changeover ...............................................................................................................................37
Cooling with Heating Changeover and Electric Reheat ................................................................................................38
Cooling with Heating Changeover and Hot Water Reheat ...........................................................................................39
Cooling with Hot Water Reheat ...................................................................................................................................40
Fan Induction with 2-Stage Electric Heat .....................................................................................................................41
Dual Duct, Minimum Air from Cold Duct ....................................................................................................................42
Pressure Independent VAV and CAV Applications with CEP/CSP-4000 Series ...................... 43
9.1 VDC vs. 24 VAC Power Options .............................................................................................................................44
Cooling ........................................................................................................................................................................45
Cooling with Morning Warm-Up ..................................................................................................................................46
Cooling with 3-Stage Reheat ........................................................................................................................................47
Cooling/Heating Changeover .......................................................................................................................................48
Cooling with Proportional Hot Water Reheat ...............................................................................................................49
Fan Induction with 2-Stage Electric Heat .....................................................................................................................50
Damper Tracking (Master/Slave) ..................................................................................................................................51
Dual Duct Heating and Cooling VAV ...........................................................................................................................52
Dual Duct Heat/Cool Constant Volume with Hot Deck Make-Up ................................................................................53
Barber Colman TP-81xx Thermostats Replacement Applications ..........................................54
TP-8101/8102/8103 Replacement (General) ...............................................................................................................55
TP-8101/8102/8103 Replacement with MP-52xx Actuators ........................................................................................56
TP-8124/8125 Replacement with One or No MP-52xx Actuators ................................................................................57
TP-8124/8125 Replacement with Two MP-52xx Actuators ...........................................................................................58
Index .................................................................................................................................... 59
CTE-5202 Analog Electronic Thermostat w/ LCD Display 2 Applications Guide, AN0912A Rev. D
General Information
(All Applications)
This document gives schematics of sample (new and
retrot) applications, cross-references, troubleshooting, and other related information.
For general mounting and connection details,
including power connections and input/output
connections, see the CTE-5202 Installation Guide.
For specications and other information, see the
CTE-5202 Data Sheet.
The latest support les are always available on the
KMC Controls web site (www.kmccontrols.com).
(Shown adjusting the Cooling
setpoint— during normal operation,
only room temperature is shown in
the upper right of the screen)
Specifications, design, and operation are subject to change without notice.
General Information (All Applications) 3 CTE-5202 Applications Guide, AN0912A Rev. D
Important Notices
Accessories
The KMC logo and KMC Controls are registered
trademarks of KMC Controls, Inc. Other products
and name brands mentioned may be trademarks of
their respective companies or organizations.
All rights reserved. No part of this publication may
be reproduced, transmied, transcribed, stored in a
retrieval system, or translated into any language in
any form by any means without the wrien permission of KMC Controls, Inc.
The material in this document is for information
purposes only. The contents and the product it describes are subject to change without notice. KMC
Controls, Inc. makes no representations or warranties with respect to this document. In no event shall
KMC Controls, Inc. be liable for any damages, direct
or incidental, arising out of or related to the use of
this document.
HMO-1161 Wall plate, al-
lows mounting
to horizontal 2
x 4", 4 x 4", or
other boxes,
light almond
HMO-1161W HMO-1161 in
white
HPO-0044 Replacement
cover hex
screws
HPO-1161 Foam insulating
gasket
REE-50xx Electric relay
modules, stag-
ing and reheat
STE-140x Duct tempera-
ture (Type III)
sensors
STE-1454/1455 Strap-on tem-
perature (Type
III) sensors
NOTE: See sample applications for additional
information.
General Information (All Applications) 4 CTE-5202 Applications Guide, AN0912A Rev. D
Connection and Configuration
Connections
AO2
AO1
AI1
T
T
~
Standard connections to the terminal block are:
• “Heating” output (REE-50xx reheat relay mod-
ules and heating valves) to AO2 and
mon)
• “Cooling” output (VAV dampers and cooling
valves) to AO1 and
• Changeover (temperature) sensor (Type III, 10K
ohm thermistor) and/or standby/unoccupied
setback contact to AI1 and
External Input (AI1) on page 5.)
• 24 VAC transformer’s neutral lead to
mon) and phase lead to ~. Alternately, 14–35
VDC can be used with + connected to ~ and –
connected to T (Common).
“Heating” Output
“Cooling” Output
Input
Common
Common
Power (AC Phase or DC +)
T
(Com-
T
(Common)*
T
(Common). (See
T
(Com-
External Input (AI1)
Hot/Cold Changeover
For hot/cold air changeover on Sequence 1 or 2,
connect a changeover sensor to the AI1 input. The
sensor should be a Type III thermistor (10K ohm
@ 77° F), such as KMC STE-140x duct or STE-
1454/1455 strap-on sensors. (An internal 10K ohm
pullup resistor is provided on AI1.)
See, for example, Cooling with Heating Changeover
on page 26 and Chilled Beam 2-Pipe Heating and
Cooling with Changeover on page 15.
At power-up, the default mode for Sequences 1 and
2 is Cold Air mode with a default changeover setpoint of 77° F. If the AI1 sensor reads a temperature
higher than 79° F, the Hot Air mode becomes active.
Hot Air mode stays active until the AI1 temperature
falls below 75° F. Then Cold Air mode is active until
the AI1 temperature rises above 79° F, which makes
Hot Air mode active. At power-up, if the temperature is between 75° F and 79° F, the thermostat will
assume Cold Air mode.
For continuous cold air mode, leave the sensor o.
*NOTE: AO1 also controls heating in morning
warm-up, changeover, and some other
congurations. For examples, see:
Heating, RA and DA on page 12, Chilled
Beam 2-Pipe Heating and Cooling with
Changeover on page 15, Cooling or
Heating on page 17, Cooling and 3-Stage
Reheat on page 24, Dual Duct, Minimum
Air from Cold Duct on page 31, Cooling
with Heating Changeover on page 37,
Cooling with Morning Warm-Up on page
46, and TP-8101/8102/8103 Replacement
(General) on page 55.
NOTE: For additional information on mounting
and installation, see the CTE-5202
Installation Guide.
The changeover temperature setpoint is adjustable
between 55 and 85° F in the ADVANCE menu, and
the default is 77° F. See Change Conguration on
page 6.
Unoccupied/Standby Setback
Contact closure across AI1 and Common initiates the
standby setback oset sequence, which causes the
cooling setpoint (in all Sequences) to increase and
the heating setpoint in Sequence 2 or 3 to decrease
by the amount of the setback oset. This setback
does not apply during the morning warm-up sequence.
See, for example, Cooling with 3-Stage Reheat and
Night Setback/Setup on page 25 and Cooling with
3-Stage Reheat and Night Setback/Setup on page
36.
General Information (All Applications) 5 CTE-5202 Applications Guide, AN0912A Rev. D
Change Setpoint
To change the setpoint:
MAX = 12, and AUX = 0 as defaults.) Use the Up and
Down buons to change the desired values. (If no
Auxiliary Flow is desired, set AO1 AUX to 0.)
1. Push the Setpoint buon (or either Up/Down
buon) to display the current value.
NOTE: Sequences 2 and 3 have two setpoints
indicated by “snowake/cool” and “re/
heat” icons. When the Cooling setpoint is
showing, pushing the Setpoint buon will
display the Heating setpoint.
2. Use the Up/Down buons to change the value.
3. Press the Setpoint buon again, and the thermostat will control at the new setpoint. (Alternately,
after about 30 seconds of no activity, the display
reverts back to displaying room temperature.)
NOTE: Setpoint range is 55 to 85° F (13 to 30° C),
with a default of 74° (for cooling or 70° for
heating).
Max.
Limit
Output
Span
Min.
Limit
(Colder Room Temperature Warmer)
Cooling
Setpoint
(Cooling)
Setback
(Heating)
Setback
Heating
Setpoint
To change any of the system or advanced features,
press the Up or Down buon until the desired (ashing) ADVANCE or SYSTEM menu appears and
then press the Setpoint buon.
The ADVANCE menu enables changing (via the
Up/Down buons) the values of:
• DEAD BD—Deadband or “minimum setpoint
dierential” (adjustable from 1 to 10° F, 2° F de-
fault)
• SETBACK—Standby/unoccupied setback o-
set (adjustable from 0 to 10° F, 2° F default)—does
not apply to morning warm-up
• PROP BD—Loop proportional band or “throt-
tling range” (adjustable from 1 to 10° F, 2° F default)
• Rm OFST—Room temperature oset (adjust-
able ±5° F, 0 default)
• CNG OVR—changeover temperature (adjustable
from 55 to 85° F, 77° F default)
• I TIME—Loop integral time (adjustable from 0 to
60, 30 minutes default, 0 = cancel integral action)*
The SYSTEM menu enables changing:
Proportional
Band
Deadband
Proportional
Band
Change Configuration
Press and hold both the Up and Down arrows buttons for about ten seconds until the display starts
ashing “LIMITS.”
NOTE: When a menu is ashing (LIMITS,
ADVANCE, SYSTEM, or EXIT),
pressing Up or Down displays the next
menu item and pressing Setpoint selects
that menu. When a menu is NOT ashing
(e.g., DEAD BD), pressing Up or Down
changes the value and pressing Setpoint
displays the next menu item.
To change any of the limits (output span) when
“LIMITS” is ashing, press the Setpoint buon
until the desired limit (AO1 MIN, AO1 MAX, AO1
AUX, AO2 MIN, or AO2 MAX) is displayed.
(Limits are adjustable from 0 to 12 VDC, with MIN = 0,
• Sequence (SEQ1, SEQ2, or SEQ3)—see
Sequences on page 7
• °F (ENGLISH) or °C (METRIC)
• BLANK—Display blanking (NO or YES)—
when blanked, the temperature will display for
no more than 30 seconds after a buon is pushed
When done, navigate to (ashing) Exit to save
changes. Leing the menu time-out (about 30
seconds) will not permanently save changes.
*NOTE: As long as there is an error between room
temperature and setpoint, the integral
action will cause the output to integrate up
or down. I TIME is the time it takes the
integral action to repeat the eect of the
proportional action.
General Information (All Applications) 6 CTE-5202 Applications Guide, AN0912A Rev. D
Sequences
6 Volts
AO1 MIN
12 Volts
AUX
AO2 (DA)
0-12 Volts
10%
Of Loop
COLD AIR SEQUENCE
AO1 (DA)
2° F
2° F
Setpoint
SEQUENCE 1:
COLD AIR SEQUENCE
AO2 (RA)
AO1 (DA)
HOT AIR SEQUENCE (Morning Warm Up)
12 Volts
AO1 (RA)
AO1 MAX
Temp. Increasing
AO1 MAX
2° F
Setpoint
Single Duct Cooling, Fan Box (with REE-5002 or REE-5017)
HOT AIR SEQUENCE (Morning Warm Up)
AO1 (RA)
0 Volts
AO1 MAX
AO1 MAX
AO1 MIN
AO2 Disabled
(12 Volts)
AO2 Disabled
(0 Volts)
AO1 MIN
AO1 MIN
AO2 MAX
AO1 MIN
2° F
Heating
Setpoint
SEQUENCE 2:
AO2 (RA)
Cooling
Setpoint
AO1 (DA)
2° F
Single Duct Cooling with Reheat and Auxiliary Flow
2° F 2° F
Heating
Setpoint
Cooling
Setpoint
SEQUENCE 3:
Independent Heating and Cooling Control
(Dual Duct VAV, Baseboard, Single Zone AHU)
Temp. Increasing
AO2 MIN
AO1 MAX
Temp.
Increasing
2° F
Heating
Setpoint
NOTE: AO1 is typically used to control the cooling
output (primary air damper or cooling
valve), and AO2 is used to control the
heating output (VAV reheat or heating
valve).
General Information (All Applications) 7 CTE-5202 Applications Guide, AN0912A Rev. D
Cross-References
Barber Colman (TAC, Invensys, Schneider Electric)
Thermostat Replaced
TP-8101, TP-8102, and TP-8103 #1
TP-8124 and TP-8125 #3
For wiring and sample applications, see Barber Colman TP-81xx Thermostats Replacement Applications on page 54.
Thermostat Replaced
KMC /
Nailor /
Dynacon*
CTE-1001
CTE-1002
CTE-1003 13-29 01EC-2146
CTE-1004 13-28 01EC-2129 THM1004 10027403 #2
CTE-1005 THM1005
CTE-1008
CTE-1101 004643 THM1101 10027415 #1
CTE-1103 01EC-9229 THM1103 10027411
CTE-1105 THM1105 10027413 #1
CTE-1108
*NOTE: CTE-1x0x thermostats require a power supply of 9.1 VDC, typically supplied by a CEP/CSP-4xxx controller/actuator, and they
have a 0–6 VDC output range. The CTE-5202 can also operate on the 9.1 VDC power supplied by CEP/CSP-4xxx controller-actuators,
but the CTE-5202’s outputs will be reduced to a maximum of about 5.3 VDC (or a maximum of about 2000 fpm from the CEP/CSP4xxx). In almost all such applications, this is adequate. In a rare application that requires a full 6 VDC output (or 3000 fpm maximum
from the CEP/CSP-4xxx), the CTE-5202 can be powered by the 24 VAC transformer, which can be easily done by switching the wire
from Terminal #5 (+9.1 VDC) to Terminal #10 (24 VAC, phase) on the CEP/CSP-4xxx. See 9.1 VDC vs. 24 VAC Power Options on page
44. See also the CEP-4000 Series Applications Guide.
Anemostat
(East/West)*
13-27,
004100
Metal
Industries*
Metalaire* Nailor*
B3-3001-
015 or
B3-015
ASC /
Titus*
10027401 #1
#3 (disregard cooling
setpoint) or #1 (with
8K–10K ohm resistor for
#1 (setback used for night
#1 (setback used for day
#1 (single duct) or #3
(dual duct)
#1 (setback used for day
CTE-5202 Sequence Selected
CTE-5202
Sequence
Selected
RA mode)
#3
setpoint)
setpoint)
setpoint)
Example
Replacement
Applications
See page 45
See page 47 and page 49
See page 45, page 50, and
page 51
See page 48, page 52, and
page 53
General Information (All Applications) 8 CTE-5202 Applications Guide, AN0912A Rev. D
KMC CTE-50xx
Thermostat Replaced
CTE-5202 Sequence Selected Example Replacement Applications
CTE-5001/5011* #1
CTE-5002/5012* #2
CTE-5003/5013* (No Replacement) (9.1 VDC)
CTE-5006/5016** #2
CTE-5015** #1
*NOTE: These models require a power supply of 9.1 VDC, typically supplied by a CEP/CSP-4xxx controller/actuator, and they have a
0–6 VDC output range. See the discussion on 9.1 VDC power under the CTE-1x0x cross-reference NOTE on page 8. Need for the REE1014 in applications is eliminated.
**NOTE: These models require a power supply of 14–20 VDC, typically using the 16 VDC power supplied by a CSP-5001/5002
controller/actuator. The CTE-5202 can use the same 16 VDC power (or 14–35 VDC or 24 VAC).
Thermostat Replaced
KMC / Nailor /
Dynacon*
CTE-5101 999-2662 01EC-2119
CTE-5102 13-33 10269607
CTE-5103 13-35 999-2663 01EC-2122
CTE-5104 13-34 999-2664 01EC-2120 H1-981
CTE-5105 019822-001 10269610
*NOTE: CTE-510x thermostats require a power supply of 14–20 VDC, typically using the 16 VDC power supplied by a CSP-5001/5002
controller/actuator. The CTE-5202 can use the same 16 VDC power (or 14–35 VDC or 24 VAC). See also the CSP-5001/5002
Applications Guide.
**For applications requiring limited T1 and/or T2 signals and unlimited T3 and/or T4 signals, flow limits may need to be set on the
controller (allowing the controller to use an unlimited signal). Limits for the CTE-5202 and AO1 and AO2 would then be left at the
default 0 and 12.
Anemostat* Carnes*
Metal
Industries*
Nailor*
B3-3001-191
or B3-191
B3-3001-186
or B3-186
Price
Industries*
019814-001
019810-001
019726-001
/ 019816-
001
See page 45 and page 48 (9.1 VDC)
See page 47 (9.1 VDC)
See page 35 (16 VDC)
See page 33 (16 VDC)
CTE-5202
Sequence
ASC /
Titus*
10269601 /
10269606
10269608 /
10269603
10269604 /
10269609
Selected
#1
#3 (if T4 is not
used)**
#3 (if T3 and
T4 are not
used) **
#2
#1 (if the
setback feature
is acceptable
in place of two
independent
setpoints)
Example
Replacement
Applications
See page 33,
page 34, and
page 41
See page 33
See page 35,
page 37, page
38, page 39, and
page 42
See page 35,
page 36, and
page 40
Other thermostats that the CTE-5202 can be a
functional/upgrade replacement for include:
• Honeywell TB7980 (check application and
specications)
• Johnson Controls (various—check application
and specications)
• Kele RTC-2P (with one or less remote inputs—
check application and specications)
• PEKO (various—check application and specications)
• Siemens (various—check application and specications)
• Viconics (various—check application and specications)
NOTE: Products and name brands mentioned
may be trademarks of their respective
companies.
General Information (All Applications) 9 CTE-5202 Applications Guide, AN0912A Rev. D
CTE-5202 Troubleshooting
Display Is Blank
• If the display comes on for no more than 30
seconds after a buon is pushed and then blanks
out, Display Blanking is enabled in the SYS-
TEM menu. See Change Conguration on page 6.
• Check for a tripped circuit breaker to the transformer.
• Check for proper supply voltage from the
transformer and that the transformer has enough
capacity (VA) for all connected devices See their
respective data sheets and Tips for Connecting
24-Volt Power Application Note (AN0604D).
Setpoint Is Not Maintained
• Check that room temperature is being sensed
correctly. See Temperature Reading Is Incorrect
on page 10.
• Check that the appropriate sequence is selected
in the SYSTEM menu. See Change Congura-
tion on page 6 and the relevant sample applica-
tion.
• If changeover is used on AI1, check the sensor
and the changeover seing in the ADVANCE
menu. If a resistor is used on AI1 to force a
changeover without a temperature sensor, the
value of the resistor may be too high or too
low. See External Input (AI1) on page 5, Change
Conguration on page 6, and the relevant sample
application.
• If a setback switch/relay is used on AI1, the
switch may be (stuck) in the setback position. See
page 36.
• If an override switch/relay is used on AO1, the
switch may be (stuck) in the override position.
See page 18, page 34, and page 46.
• If space temperature is overshooting the setpoint
or oscillating, try increasing the proportional
band by a degree in the ADVANCE menu. If
the problem persists, try increasing the integral
value slightly (up to 20%). If the problem still
persists, try seing the integral value to 0. (The
optimal integral value is dependent on the
characteristics of the particular space and HVAC
system.) See Change Conguration on page 6.
Temperature Reading Is Incorrect
• Check that the correct °F/C temperature scale
is selected in the SYSTEM menu. See Change
Conguration on page 6.
• If the discrepancy is small, adjust the room
temperature oset in the ADVANCE menu. See
Change Conguration on page 6.
• Check that the thermostat is NOT mounted on
an exterior wall, mounted on or near a large
thermal mass (e.g., concrete block wall), blocked
from normal air circulation by obstructions,
exposed to heat sources (e.g., lights, computers,
copiers, coee makers) or to sunlight (at any
time of the day), exposed to drafts from windows or air vents, or exposed to air ow through
the conduit from leaks in plenum ducts (put
plumber’s puy or other sealant inside conduit
to block air leaks).
Wiring Issues
• Check for correct wiring for the application. See
Connections on page 5 and the various applica-
tion examples in this document.
• Remove the thermostat from the backplate and
inspect the terminals for loose wires. See the
CTE-5202 Installation Guide.
• Check the wiring at the connected devices.
• Check seings of auxiliary ow and other limits
as relevant in the LIMITS menu. See Change
Conguration on page 6.
• If the HVAC system has trouble recovering from
the unoccupied setback to the occupied setpoint
during very cold weather, adjust the setback in
the ADVANCE menu. See Change Congura-
tion on page 6.
General Information (All Applications) 10 CTE-5202 Applications Guide, AN0912A Rev. D
• Use a voltmeter and ohmmeter to check the
terminals for expected values.
NOTE: Wiring must be adequate to avoid
excessive voltage drop on long
runs! Allow plenty of “cushion” in
measurements A meter may be too slow
to register transient dips or peaks during
startup.
Single-Zone Proportional Heating and
Cooling Applications
This section gives sample applications for using
the CTE-5202 in single zone proportional heating
(baseboard heaters) and cooling (chilled beams) with
valves or SCR control.
NOTE: For chilled beam applications, separate
control of humidity is required to prevent
condensation.
ReturnFrom Coil
CTE-5202
To Coil Supply
Valve
24 VAC
Common
Input
–
~
Single-Zone Heating and Cooling Applications 11 CTE-5202 Applications Guide, AN0912A Rev. D
Thermostat
T
AI1
AO1
AO2
T
~
Heating, RA and DA
~
(Phase)
CTE-5202 thermostats can use a variety of valves for
heating/cooling applications with hot and chilled
water. For Reverse Acting control, connect a 5K to
10K ohm resistor between Common and AI1. Select
Sequence 1 (from the CTE-5202 SYSTEM menu)
and lower the Changeover (in the ADVANCE
menu) to the lowest seing (55° F). See Change
Conguration on page 6. The resistor simulates a
changeover sensor and puts the thermostat in Reverse Acting mode.
NOTE: If the resistor value is too high, the
thermostat will not go into RA mode. If
the resistor value is too low, the thermostat
may go into setback mode.
Valve
This RA control works for NO 2–10 and 0–10 VDC
valves or NC 10–2 and 10–0 VDC valves as well as
equivalent SCR controls.
For Direct Acting control, select Sequence 1 (from
the CTE-5202 SYSTEM menu). See Change Con-
guration on page 6. (Do not connect the resistor.)
This DA control works for NC 2–10 and 0–10 VDC
valves or NO 10–2 and 10–0 VDC valves as well as
equivalent SCR controls.
CTE-5202
Thermostat
T
AO1
AO2
AI1
T
~
Select Sequence 1
10 VDC
24 VAC
Common
Input
24 VA C
(Neutral)
–
DA Heating
Heating
Valve Closed
Heating
Valve Open
Setpoint
(Colder Room Temperature Warmer)
Select Sequence 1 Select Sequence 1
AO1
Signal
10 VDC
(5K–10K Ohm
Resistor between
AI1 and Common
for RA Mode Only)
RA Heating
Heating
Valve Open
Heating
Valve Closed
Setpoint
(Colder Room Temperature Warmer)
AND Set Changeover to 55° F
AO1
Signal
Single-Zone Heating and Cooling Applications 12 CTE-5202 Applications Guide, AN0912A Rev. D
Chilled Beam Cooling
This application controls cooling in a chilled beam or
equivalent installation.
This works for NC 2–10 and 0–10 VDC valves or NO
10–2 and 10–0 VDC valves.
Valve
24 VAC
Common
Input
24 VA C
(Neutral)
(Phase)
–
~
Select Sequence 1 (from the CTE-5202 SYSTEM
menu). See Change Conguration on page 6.
CTE-5202
Thermostat
T
T
AI1
~
Select Sequence 1
AO1
AO2
Cooling Max.
Cooling Min.
Setpoint
(Colder Room Temperature Warmer)
Single-Zone Heating and Cooling Applications 13 CTE-5202 Applications Guide, AN0912A Rev. D
Chilled Beam 4-Pipe Heating and Cooling
This application enables both heating and cooling
in a chilled beam and baseboard or equivalent
installation.
This works for NC 2–10 and 0–10 VDC valves or NO
10–2 and 10–0 VDC valves.
Cooling Valv e
24 VAC
Common
Input
24 VA C
(Neutral)
(Phase)
–
~
Select Sequence 3 from the CTE-5202 SYSTEM
menu. See Change Conguration on page 6.
CTE-5202
Thermostat
T
T
AI1
~
Select Sequence 3
AO1
AO2
AO2 MAX
AO1 MIN
Heating Valv e
24 VAC
Common
Input
AO2 (RA)
AO1 (DA)
2° F 2° F
Heating
Setpoint
Cooling
Setpoint
AO2 MIN
AO1 MAX
Temp.
Increasing
Single-Zone Heating and Cooling Applications 14 CTE-5202 Applications Guide, AN0912A Rev. D
Chilled Beam 2-Pipe Heating and Cooling with Changeover
An STE-1454/1455 strap-on (Type III) temperature
sensor provides the CTE-5202 an automatic change-
over for heating/cooling applications using hot and
chilled water. The sensor will switch the thermostat
between cooling and heating modes based on
the temperature of the water in the pipe. A water
temperature higher than changeover temperature,
switches control to heating mode, and a temperature
lower than changeover temperature, switches control to cooling mode.
Valve
24 VAC
Common
Input
Select Sequence 1 from the CTE-5202 SYSTEM
menu. Change the default changeover temperature
to the maximum of 85° in the CTE-5202 ADVANCE
menu. See Change Conguration on page 6 and Hot/
Cold Changeover on page 5.
CTE-5202
Thermostat
T
T
AI1
~
Select Sequence 1
AO1
AO2
AO1 MIN
24 VA C
(Neutral)
(Phase)
STE-1454/1455 Strap-On Sensor on Supply Pipe
COLD SEQUENCE
AO1 (DA)
2° F
Setpoint
2° F
–
~
HOT SEQUENCE
AO1 (RA)
AO1 MAX
Temp. Increasing
AO1 MAX
AO1 MIN
2° F
Setpoint
Single-Zone Heating and Cooling Applications 15 CTE-5202 Applications Guide, AN0912A Rev. D
Pressure Dependent VAV
Applications with MEP-4xx2
This section gives sample applications for using the
CTE-5202 with the MEP-4xx2 actuator in pressure
dependent VAV applications.
The MEP-4xx2’s default direction is CCW to close
(CW to open or CW with increasing voltage), but
this can be reversed by a switch during installation
and conguration.
See also the MEP-4000 Series Installation Guide.
For additional applications, see Pressure Indepen-
dent VAV Applications with CSP-5001/5002 on page
32 and make the corresponding wiring adjustments
for power to the MEP-4xx2 and CTE-5202.
Damper
24 V AC CTE-5202
MEP-4xx2
SET
POINT
Pressure Dependent VAV Applications with MEP-4002 16 CTE-5202 Applications Guide, AN0912A Rev. D
Cooling or Heating
CTE-5202 thermostats can use MEP-4xx2 actuators
to operate damper boxes in a pressure-dependent
VAV system. As shown in the diagram, a “requested
ow” voltage signal (AO1) is connected to the MEP4002 to adjust airow from minimum to maximum
ow according to space demand. Minimum and
maximum ow limit adjustments can be made at the
thermostat (recommended) or at the actuator. (See
the MEP-4000 Series Installation Guide.)
For cooling, select Sequence 1 (from the CTE-5202
SYSTEM menu). See Change Conguration on
page 6.
MEP-4002
Actuator
24 VAC
Common
Out
Input
24 VA C @ 5 VA
(Neutral)
(Phase)
–
~
For heating, connect a 5K to 10K ohm resistor
between Common and AI1. Select Sequence 1 and
lower the Changeover to the lowest seing (55° F).
See Change Conguration on page 6. The resistor
simulates a changeover sensor and puts the thermo-
stat in Reverse Acting mode.
NOTE: If the resistor value is too high, the
thermostat will not go into RA mode. If
the resistor value is too low, the thermostat
may go into setback mode.
CTE-5202
Thermostat
T
T
AI1
~
(5K–10K
Ohm Resistor
between AI1
and Common
for Heating
Mode Only)
AO1
AO2
3300
fpm
1650
fpm
Cooling Min.
0 fpm
Setpoint
(Colder Room Temperature Warmer)
Cooling Air
Select Sequence 1 Select Sequence 1
Cooling Max.
AO1
Signal
3300
fpm
Heating Max.
1650
fpm
0 fpm
(Colder Room Temperature Warmer)
Heating Air
Setpoint
AND set Changeover to 55° F
Heating Min.
AO1
Signal
Pressure Dependent VAV Applications with MEP-4002 17 CTE-5202 Applications Guide, AN0912A Rev. D
Auto and Override (to Fully Closed)
Adding a Normally Closed SPST relay or switch
enables overriding the air ow to fully closed.
(Otherwise the example below is the same as the
conguration in Cooling or Heating on page 17).
The default seing is Auto. When the NC relay
energizes, the thermostat signal is removed from the
actuator’s input. The resulting 0 VDC “signal” on
the actuator’s input overrides the actuator to fully
closed.
NC SPST
(Override
to Fully
Closed)
24 VA C @ 5 VA
(Neutral)
(Phase)
–
~
MEP-4002
24 VAC
Common
Actuator
Out
Input
NOTE: An override to fully open does not apply
to the MEP-4xx2 in a way that is analogous
to the CSP-5001 as shown in Auto and
Override (to Fully Closed or Fully Open)
on page 34.
CTE-5202
Thermostat
T
Relay
T
AI1
~
(5K–10K
Ohm Resistor
between AI1
and Common
for Heating
Mode Only)
AO1
AO2
Other Applications
See the corresponding application in Pressure
Independent VAV Applications with CSP-5001/5002
on page 32 and make the corresponding wiring adjust-
ments for power to the MEP-4xx2 and CTE-5202.
The MEP-4xx2’s default direction is the same as the
CSP-5001.
Pressure Dependent VAV Applications with MEP-4002 18 CTE-5202 Applications Guide, AN0912A Rev. D
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