Crestron CHV-THSTAT User manual

Category
Thermostats
Type
User manual

This manual is also suitable for

Crestron CHV-TSTAT & CHV-THSTAT
Thermostats
Operations and Installation Guide
The specific patents that cover Crestron products are listed at patents.crestron.com.
Crestron, the Crestron logo, Cresnet, Crestron Home, Crestron Studio, Crestron Toolbox and PAC2 are either trademarks or registered trademarks of
Crestron Electronics, Inc. in the United States and/or other countries. Other trademarks, registered trademarks and trade names may be used in this
document to refer to either the entities claiming the marks and names or their products. Crestron disclaims any proprietary interest in the marks and
names of others.
Crestron is not responsible for errors in typography or photography.
This document was written by the Technical Publications department at Crestron.
©2013 Crestron Electronics, Inc.
Regulatory Compliance
As of the date of manufacture, the CHV-TSTAT and CHV-THSTAT have been tested and found to comply
with specifications for CE marking and standards per EMC and Radiocommunications Compliance
Labelling.
Federal Communications Commission (FCC) Compliance Statement
CAUTION: Changes or modifications not expressly approved by the manufacturer responsible for
compliance could void the user’s authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
Reorient or relocate the receiving antenna
Increase the separation between the equipment and receiver
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected
Consult the dealer or an experienced radio/TV technician for help
Industry Canada (IC) Compliance Statement
CAN ICES-3(B)/NMB-3(B)
Crestron CHV-TSTAT and CHV-THSTAT Thermostats
Operations and Installation Guide DOC. 8163E Contents
i
Contents
Quick Installation Reference .................................................................................................... iii
Thermostats: CHV-TSTAT and CHV-THSTAT 1
Introduction ............................................................................................................................... 1
Features and Functions ................................................................................................ 1
Specifications .............................................................................................................. 4
Physical Description .................................................................................................... 5
Setup .......................................................................................................................................... 9
Network Wiring ........................................................................................................... 9
Identity Code ............................................................................................................... 9
System Connections .................................................................................................. 10
Wiring Diagrams ..................................................................................................................... 11
Separately Powered Two Wire Heat Systems (Powered by an Independent
Transformer) .............................................................................................................. 12
1-Stage Heat Only Systems ....................................................................................... 12
1-Stage Heat with Fan Control Systems .................................................................... 13
1-Stage Cool Only Systems ....................................................................................... 13
1-Stage Heat/Cool with Integrated Control Unit Systems ......................................... 14
1-Stage Heat/Cool with Separate Systems ................................................................ 15
1-Stage Heat Pump Systems ...................................................................................... 16
2-Stage Heat Pump Systems ...................................................................................... 17
Slab 1, Slab 2, and Slab 3 (Floor Warming and/or Space Heating) Systems ............ 18
Slab 4A 2-Stage Heat/1-Stage Cool Systems and Slab 5A Floor Warming with
1-Stage Space Heat/Cool Systems ............................................................................. 19
Slab 4B 2-Stage Heat/1-Stage Cool System and Slab 5B 1-Stage Heat/Cool with
Floor Warming Systems ............................................................................................ 20
General Humidifier Connections ............................................................................... 21
Installation ............................................................................................................................... 22
Thermostat Setup ..................................................................................................................... 24
Setup Procedure ......................................................................................................... 24
Setup Notes................................................................................................................ 24
System Types and Definitions ................................................................................... 25
Heat/Cool, 1 or 2-Stages, Forced Air or Radiant ....................................................... 27
Heat Pump, 1 or 2-Stages, Aux Heat or Dual Fuel .................................................... 31
Slab 1 Floor Warming Only ................................................................................... 35
Slab 2 – 1-Stage Space Heat with Slab Maximum .................................................... 39
Slab 3 – 1-Stage Heat with Slab Minimum/Maximum .............................................. 43
Slab 4A – 2-Stage Heat/One Stage Cool with Slab Maximum ................................. 47
Slab 4B – 2-Stage Heat/1-Stage Cool with Slab Maximum (Heat Pump) ................. 51
Slab 5A – 1-Stage Heat/Cool with Floor Warming ................................................... 55
Slab 5B – 1-Stage Heat/Cool with Floor Warming (Heat Pump) .............................. 59
Thermostat Operation .............................................................................................................. 63
View Button Menus ................................................................................................... 64
Mode Button Menus .................................................................................................. 65
Uploading and Upgrading ........................................................................................................ 72
Establishing Communication ..................................................................................... 72
Thermostats Crestron CHV-TSTAT and CHV-THSTAT
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Contents Operations and Installation Guide DOC. 8163E
Programs and Firmware ............................................................................................ 73
Program Checks ........................................................................................................ 73
Problem Solving ...................................................................................................................... 74
Troubleshooting ......................................................................................................... 74
Control System Error Log Message Formats ............................................................ 76
Local Error Messages ................................................................................................ 77
Check Network Wiring .............................................................................................. 77
Reference Documents ................................................................................................ 78
Further Inquiries ........................................................................................................ 78
Future Updates .......................................................................................................... 79
Appendix A: About Heat Pumps ............................................................................................. 80
Heat Pump Operation ................................................................................................ 80
Glossary ................................................................................................................................... 81
Return and Warranty Policies .................................................................................................. 83
Merchandise Returns / Repair Service ...................................................................... 83
Crestron Limited Warranty ........................................................................................ 83
Crestron CHV-TSTAT and CHV-THSTAT Thermostats
Operations and Installation Guide DOC. 8163E Contents
iii
Quick Installation Reference
1. Select a suitable location and run the connecting wires from the heating/cooling system and the Cresnet
®
system. Refer to pages 7 and 8 for descriptions of the thermostat connectors.
Refer to page 9 for Network wiring details.
Use the appropriate wiring diagram:
Separately Powered Two Wire Heat Systems
(Powered by an Independent Transformer) (Refer to page 12)
1-Stage Heat Only (Refer to page 12)
1-Stage Heat with Fan Control (Refer to page 13)
1-Stage Cool Only (Refer to page 13)
1-Stage Heat/Cool with Integrated Control Unit (Refer to page 14)
1-Stage Heat/Cool with Separate Systems (Refer to page 15)
1-Stage Heat Pump (Refer to page 16)
2-Stage Heat Pump (Refer to page 17)
Slab 1, Slab 2, and Slab 3 (Floor Warming and/or Space Heating) (Refer to page 18)
Slab 4A 2-Stage Heat/1-Stage Cool Systems and Slab 5A Floor Warming with 1-Stage Space
Heat/Cool (Refer to page 19)
Slab 4B 2-Stage Heat/1-Stage Cool System and Slab 5B 1-Stage Heat/Cool with Floor Warming
(Refer to page 20)
General Humidifier Connections (Refer to page 21)
2. Separate the thermostat from the backplate to expose the connections and mounting holes.
3. Mount the thermostat backplate (60 inches (~1.6 meters)) above the finished floor) directly to the wall with wall
anchors (not provided) and screws (not provided) or to a horizontally mounted 1-gang electrical box (not
provided), and connect the wiring. Refer to page 22 for detailed mounting instructions and pages 7 and 8 for
detailed connector information. If using a 5-sided box, fill with insulation material to minimize wall air ingress.
4. Install the thermostat on the backplate (refer to page 22).
5. Set up the thermostat (refer to page 24).
For Heat/Cool Radiant and Forced Air Systems, refer to page 27.
For Heat Pump Systems, refer to page 31
.
For Slab Systems, refer to page 35.
6. Configure the thermostat (refer to “Thermostat Operationwhich starts on page 63).
Crestron CHV-TSTAT and CHV-THSTAT Thermostats
Operations and Installation Guide DOC. 8163E Thermostats: CHV-TSTAT and CHV-THSTAT
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User adjustable temperature and/or humidity control of 1- and 2-stage
heating and cooling systems
Supports seven slab system configurations
128 x 64 transflective 2.75 inch (70 mm) LCD display
Fahrenheit or Celsius indication
Four front panel buttons for setup, configuring and temperature/humidity
adjustments
Back light (with each button press) for night viewing
Supports up to four remote temperature and/or temperature/humidity sensors
Operates as a stand-alone device or in a Cresnet system
Extended functionality as a Cresnet device for lighting control, alarms, etc.
Thermostats: CHV-TSTAT and
CHV-THSTAT
Introduction
The CHV-TSTAT and CHV-THSTAT from Crestron
®
are versatile heating and
cooling thermostats designed for 1- and 2-stage control of forced air, radiant, and
heat pump HVAC systems. The CHV-TSTAT provides temperature control, while
the CHV-THSTAT provides temperature control with an integrated humidistat.
Relative humidity capability can be added to the CHV-TSTAT through an external
remote humidity sensor (sold separately).
Although functional as standalone thermostats, the CHV-TSTAT and
CHV-THSTAT deliver greatly enhanced functionality as part of a complete Crestron
Home
®
automation system. The thermostats are available in six different models:
Models
DESCRIPTION MODEL NUMBER COLOR
Heating/Cooling
Thermostat
CHV-TSTATA Almond
CHV-TSTATB Black
CHV-TSTATW White
Heating/Cooling and
Humidity Thermostat
CHV-THSTATA
Almond
CHV-THSTATB Black
CHV-THSTATW White
Features and Functions
Thermostats Crestron CHV-TSTAT and CHV-THSTAT
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Thermostats: CHV-TSTAT and CHV-THSTAT Operations and Installation Guide DOC. 8163E
Featuring a large backlit LCD display, the CHV-TSTAT and CHV-THSTAT
thermostats are navigable using four simple push buttons which provide easy access
to indoor and outdoor temperature and humidity readings, setpoint adjustments,
system mode and fan status indicators, and setup menus. Climate control features
include separate heating, cooling, and humidity setpoints with optional automatic
changeover between heating and cooling modes. Adjustable anticipators prevent
overshooting the set temperature, and continuous fan operation can be selected when
needed for increased circulation.
Multiple Crestron thermostats may be networked via Cresnet to a PAC2
®
, PAC2M,
or other 2-Series control system (all sold separately), enabling global temperature
and humidity adjustment from any thermostat. Automation functions such as
lighting, motorized blinds, or lawn sprinklers can be accessed through two custom
remote function pages, and customized text messages can be sent to the LCD display
to provide maintenance reminders and other alerts.
Its connection to the control system also enables full control and scheduling of the
CHV-TSTAT/CHV-THSTAT from touch screens and computers throughout the
home, and supports extensive flexibility for integration with other devices and
systems. In the event that communication with the control system is disrupted for
any reason, the CHV-TSTAT/CHV-THSTAT remains operable to control the HVAC
system.
Optional remote temperature and humidity sensors can be connected to the
CHV-TSTAT/CHV-THSTAT for enhanced flexibility and optimized performance.
Climate can be regulated according to an average of multiple sensors, or the built-in
sensors can be disabled entirely to allow the CHV-TSTAT/CHV-THSTAT to be
installed out of view. Outdoor climate can also be monitored, enabling outdoor
low-temperature compensation to prevent condensation on windows during cold
weather. The CHV-TSTAT/CHV-THSTAT accepts up to four remote temperature
sensors, two remote temp/humidity sensors, or a combination of one temp/humidity
and two temperature sensors.
Firmware Versions
The new features, and consequent changes to the SIMPL Windows symbol
programming, for firmware version 2.0 and later make it incompatible for use with
X-generation control processors. In addition, upgrading to release 2.0 and later from
a previous release requires a complete re-programming of the thermostat.
Remote Sensors
Firmware version 2.0 and later supports up to four optional remote sensors, two for
each input channel: temperature only (CHV-RTS), temperature/humidity
(CHV-RTHS), and slab sensor (CHV-RSS) for both thermostats (all sold separately).
Information from two sensors that share an input channel is averaged together in the
temperature/humidity calculations.
Outdoor conditions, -40º to 170º F (-40º to 77º C), can be imported from the
CHV-RSS slab sensor.
For additional information about the sensors, refer to the latest revision of the
CHV-RTS & CHV-RTHS Installation Guide (Doc. 8189), and the CHV-RSS
Installation Guide (Doc.6229) which are available from the Crestron Web site
(www.crestron.com/manuals
).
Crestron CHV-TSTAT and CHV-THSTAT Thermostats
Operations and Installation Guide DOC. 8163E Thermostats: CHV-TSTAT and CHV-THSTAT
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Heating and Cooling Systems
The CHV-TSTAT and CHV-THSTAT can control the following heating and cooling
systems:
1-stage heat
1-stage heat, 1stage cool
1-stage heat, 1-stage cool (heat pump with auxiliary heat)
2-stage heat
2-stage heat, 1-stage cool
1-stage heat, 2-stage cool
2-stage heat, 2-stage cool
2-stage heat, 2-stage cool (heat pump with auxiliary heat)
Wide range cool option suitable for wine cellars or other chilling processes*
Slab settings for heating and floor warming systems*
NOTE: 2-stage heating Unlike traditional furnaces that turn on and run at full
capacity with each demand for heating, 2-stage heat operates like two separate
furnaces to maintain more consistent comfort in the home. The unit starts out
running in its first stage, and operates at a fraction of its heating capacity. This
reduced capacity is sufficient to warm the home on mild winter days. But when the
temperature outside goes very low, the furnace adjusts to full capacity (second stage)
to meet the demand for heat within the home.
2-stage cooling In warm weather, the first stage of the cooling equipment operates
at a fraction of the total cooling capacity. On very hot days, the second stage of the
cooling equipment energizes, and the cooling system operates at full capacity.
*Firmware version 2.0 or higher.
Thermostats Crestron CHV-TSTAT and CHV-THSTAT
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Thermostats: CHV-TSTAT and CHV-THSTAT Operations and Installation Guide DOC. 8163E
Specifications
The following table provides a summary of specifications for the CHV-TSTAT and
CHV-THSTAT.
CHV-TSTAT and CHV-THSTAT Specifications
SPECIFICATION DETAILS
Measurement Range
Indoor Temperature 0° to 110° F (-18° to 43° C)
Outdoor Temperature -40º to 170º F (-40º to 77º C)
1
Humidity 0% to 100% RH
1
Temperature Tolerance
Over Full Range ±1º F (±0.5º C)
At Room Temperatures ±1º F (+0.1/0.4º C)
Humidity Tolerance
2
±5%
Setpoint Range
Auto Setpoint 38° to 99° F (3° to 37° C)
Heat Setpoint 38° to 89° F (3° to 32° C)
Cool Setpoint 59° to 99° F (15° to 37° C);
38° to 99° F (3° to 37° C) with extended cool
mode enabled
3
Humidity Setpoint 5% to 90 % RH
1
Relay Rating 1 amp @ 40 volts dc or 24 volts ac (nominal)
Power Requirements
24V 2 watts (0.083 amps) @ 24 volts ac, supplied
by heating or cooling system
Cresnet Power Usage <1 watt (<0.05 amps @ 24 volts dc), required
for Cresnet communication only
Display
Type Transflective LCD, backlit
Size 2.75 in (70 mm)
Resolution 128 x 64
Viewing Angle ±50° horizontal (@ 0° vertical),
±50° vertical (@ horizontal)
Default Net ID 2A
Environmental
Temperature 41º to 104º F (5º to 40º C)
Humidity 10% to 90% RH (non-condensing)
Enclosure Plastic
Dimensions
Height 3.75 in (96 mm)
Width 5.00 in (127 mm)
Depth 1.04 in (27 mm)
Weight 6 oz (165 g)
(Continued on following page)
Crestron CHV-TSTAT and CHV-THSTAT Thermostats
Operations and Installation Guide DOC. 8163E Thermostats: CHV-TSTAT and CHV-THSTAT
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CHV-TSTAT and CHV-THSTAT Specifications (Continued)
SPECIFICATION DETAILS
Available Accessories
CHV-RSS Remote Slab Sensor and Outdoor
Temperature Sensor
CHV-RTS Remote Temperature Sensor
CRESNET-HP-NP-
[BK,OR,TL]
Cresnet "High-Power" Control Cable,
non-plenum
CRESNET-NP-
[BK,OR,TL,YL]
Cresnet Control Cable, non-plenum
CRESNET-P-
[BK,OR,TL,YL]
Cresnet Control Cable, plenum
1. Humidity sensing (for the CHV-TSTAT) and outdoor temperature/humidity sensing require
additional remote sensors, sold separately.
2. CHV-THSTAT only.
3. CHV-TSTAT only.
Physical Description
This section provides information on the connections, controls and indicators
available on the CHV-TSTAT and CHV-THSTAT.
CHV-TSTAT and CHV-THSTAT Physical View
66
o
F
43
%
68
o
F
HEATING
HEAT ONLY
ON LINE
H1 H2 AX
Thermostats Crestron CHV-TSTAT and CHV-THSTAT
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Thermostats: CHV-TSTAT and CHV-THSTAT Operations and Installation Guide DOC. 8163E
CHV-TSTAT and CHV-THSTAT Overall Dimensions (Front View)
5.00 in
(127 mm)
3.75 in
(96 mm)
1
2
3
4
5
MODE
VIEW
CHV-TSTAT and CHV-THSTAT Overall Dimensions (Side and Rear Views)
1.04 in
(27 mm)
3.27 in
(84 mm)
Crestron CHV-TSTAT and CHV-THSTAT Thermostats
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CHV-TSTAT and CHV-THSTAT Backplate (Front Cover Removed)
Connectors, Controls & Indicators
# CONNECTORS,
CONTROLS &
INDICATORS
DESCRIPTION
1 MODE Button Accesses user controls (system mode, fan
mode, humidifier, Crestron system, and
global update)
2 VIEW Button Accesses humidity reading*, outdoor
temperature reading*, system messages and
remote functions
3
Selects user modes and increments
selection in setup modes
4
Selects user modes and decrements
selection in setup modes
5 LCD Display Displays current indoor temperature and
relative humidity*, outdoor temperature and
relative humidity*, setpoints, activity, function,
Cresnet system information, internal relay
status, setup menus, and control system
messages
(Continued on following page)
Thermostats Crestron CHV-TSTAT and CHV-THSTAT
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Thermostats: CHV-TSTAT and CHV-THSTAT Operations and Installation Guide DOC. 8163E
Connectors, Controls & Indicators (Continued)
# CONNECTORS,
CONTROLS &
INDICATORS
DESCRIPTION
6 Control Connections
(System Dependent)
(2) 9-position terminal blocks
HUM: Energized to RHU during humidity
call
RHU: Reference for humidifier
RH: Reference Heat, used for calls to
heating system
RC: Reference Cool, used for calls to
cooling system
G: Fan, energized to RC during fan call
Y/Y1: Compressor (stage one), energized
to RC when compressor (or first
stage) is run
Y2: Compressor (stage two), energized
to RC on 2-stage systems on call
for second stage
O: Changeover control, energized to
RC during cooling modes
B: Energized to RC during non-cooling
modes
W/W1: Heat (1-stage)/heat (stage one)
energized to RH during a call for
heat in heat/cool systems or aux
heat in heat pump systems
W2: Heat (stage two), energized to RH
during a call for second stage heat in
heat/cool systems
7 Remote Sensing
Connections (Optional)
RSR: Remote Sensor Returns Common
sensor terminal
RS1: Remote Sensor terminal Connect
the sensor from RS1 to RSR
RS2: Remote Sensor terminal Connect
the sensor from RS2 to RSR
8 Power Connections
(Required)
24 (C): 24 Vac common terminal supplies
remote 24 Vac power to thermostat
24 (R): 24 Vac reference terminalCan be
connected to RH or RC by P4
jumper setting, or tied directly to
power source (refer to “System
Connections” on page 10)
9 Network
(Optional)
(1) 4-position terminal block; Cresnet slave
port, connect to Cresnet control network
24: Power (24 volts dc)
Y: Data
Z: Data
G: Ground
1. Humidity sensing (for the CHV-TSTAT) and outdoor temperature/humidity sensing require additional
remote sensors, sold separately.
Crestron CHV-TSTAT and CHV-THSTAT Thermostats
Operations and Installation Guide DOC. 8163E Thermostats: CHV-TSTAT and CHV-THSTAT
9
Setup
Network Wiring
When wiring the Cresnet network, consider the following:
Use Crestron Certified Wire.
Use Crestron power supplies for Crestron equipment.
Provide sufficient power to the system.
CAUTION: Insufficient power can lead to unpredictable results or damage to the
equipment. Use the Crestron Power Calculator to help calculate how much power is
needed for the system (
www.crestron.com/calculators).
For networks with 20 or more devices, use a Cresnet Hub/Repeater (CNXHUB) to
maintain signal quality.
For more details, refer to “Check Network Wiring” on page 76.
Identity Code
NOTE: The latest software can be downloaded from the Crestron Web site
(www.crestron.com/software).
The Net ID of the CHV-TSTAT/CHV-THSTAT has been factory set to 2A. The Net
IDs of multiple CHV-TSTAT/CHV-THSTAT devices in the same system must be
unique. Net IDs are changed from a personal computer (PC) via Crestron Toolbox™
(refer to “Establishing Communication” on page 72).
When setting the Net ID, consider the following:
The Net ID of each unit must match an ID code specified in the Crestron
Studio™ or SIMPL Windows program.
Each network device must have a unique Net ID.
For more details, refer to the Crestron Toolbox help file.
Thermostats Crestron CHV-TSTAT and CHV-THSTAT
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Thermostats: CHV-TSTAT and CHV-THSTAT Operations and Installation Guide DOC. 8163E
System Connections
NOTE: Installers should have a strong working knowledge of HVAC systems.
CHV-TSTAT and CHV-THSTAT Backplate Front View With Cover Removed
TOP
HUM
RHU
RSR
RSR
RS1
RS2
24(C)
24(R)
24V
Y
Z
G
NETWORK
RH
RC
G
Y/Y1
Y2
O
B
W/W1
W2
Backplate
24(R) - 24 Vac reference terminal Can be connected to RH or RC
by P4 jumper setting (refer to following page), or tied directly
to power source
24(C) - 24 Vac common terminal supplies remote 24 Vac power
to thermostat
RS2 - Remote Sensor terminal - Connect the sensor from RS2 to RSR
RS1 - Remote Sensor terminal - Connect the sensor from RS1 to RSR
RSR - Remote Sensor Returns - Common sensor terminal
RHU - Reference for humidifier
HUM - Energized (connected) to RHU during humidity call
W2 - Heat (stage two), energized (connected) to RH during a call for
second stage heat in heat/cool systems
W/W1 - Heat (single stage)/heat (stage one) energized
to RH during a call for heat in heat/cool systems or aux heat
in heat pump systems or Slab Heat in Slab Systems.
B - Energized to RC during non-cooling modes
O - Changeover control, energized to RC during cooling modes
Y2 - Compressor (stage two), energized to RC on two-stage
systems on call for second stage
Y/Y1 - Compressor (stag
e one), energized to RC when
compressor (or first stage) is run
G - Fan, energized to RC during call for fan
RC - Reference Cool, used for calls to cooling system
RH - Reference Heat, used for calls to heating system
-
Crestron CHV-TSTAT and CHV-THSTAT Thermostats
Operations and Installation Guide DOC. 8163E Thermostats: CHV-TSTAT and CHV-THSTAT
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Wiring Diagrams
The wiring diagrams that follow show connections for the CHV-TSTAT and
CHV-THSTAT. The heating or cooling system can supply power to the thermostat,
or a separate transformer can supply it. In many installations, spare conductors are
available to supply 24 Vac to the thermostat, using the C (24 Vac common)
connection on the HVAC equipment.
The P4 jumper internally connects either the RH (Reference Heat system) or RC
(Reference Cooling system), relieving the installer from connecting a jumper from
the 24(R) terminal to the RH or RC terminal.
If power is available from the HVAC system, follow the diagrams for the proper P4
jumper connection.
When power is not available from the HVAC system, a separate transformer,
connected between 24(R) and 24(C) terminals, can provide power to the thermostat.
When powered by a separate transformer, ensure that the P4 jumper is connected
across pins 2 and 3 (No Connection) to prevent damage to the thermostat and the
HVAC system.
CAUTION: The P4 Jumper Position on the Circuit Board is critical to proper
operation. Improper P4 jumper position can cause equipment damage. The P4
jumper connects the 24(R) terminal to the RH, or RC connector. Refer to the
following illustration.
P4 Jumper Position
1
2
3
4
P4
Connects 24(R) to RH
Connects 24(R) to RC
No Connection
NOTE: Ensure that the power circuits are shut off at the source before connecting
the thermostat. Provide disconnect means and overload protection as required for the
power supply.
NOTE: Ensure that the transformer has sufficient power for all the thermostats in
the system, or use multiple transformers. Refer to the power requirements in
Specifications” on page 4
.
The following diagrams are examples of connections for heat, heat/cool and
1-stage and 2-stage heat pump systems, and various slab systems. If the system being
connected does not match any of the systems described below, contact Crestron
Technical Support for assistance.
NOTE: Use either connector, O or B as required, for changeover control.
Thermostats Crestron CHV-TSTAT and CHV-THSTAT
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Thermostats: CHV-TSTAT and CHV-THSTAT Operations and Installation Guide DOC. 8163E
Separately Powered Two Wire Heat Systems
(Powered by an Independent Transformer)
Independent Transformer Connection P4 Jumper Connects Pins 2 and 3
1-Stage Heat Only Systems
1-Stage Heat Only System Powered P4 Jumper Connects Pins 1 and 2
Crestron CHV-TSTAT and CHV-THSTAT Thermostats
Operations and Installation Guide DOC. 8163E Thermostats: CHV-TSTAT and CHV-THSTAT
13
1-Stage Heat with Fan Control Systems
1-Stage Heat with Fan Control P4 Connects Pins 1 and 2 Additional Jumper Connects RH to RC
1-Stage Cool Only Systems
1-Stage Cool Only P4 Jumper Connects Pins 3 and 4
Thermostats Crestron CHV-TSTAT and CHV-THSTAT
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Thermostats: CHV-TSTAT and CHV-THSTAT Operations and Installation Guide DOC. 8163E
1-Stage Heat/Cool with Integrated Control Unit
Systems
1-Stage Heat/Cool with Integrated Control Unit P4 Jumper Connects Pins 1 and 2 Additional Jumper RH to RC
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Crestron CHV-THSTAT User manual

Category
Thermostats
Type
User manual
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