Carrier WSHP Open v3 Quick setup guide

W
WS SH HP P O Op pe en n v v3 3
I
In nt te eg gr ra at ti io on n G Gu ui id de e
CARRIER CORPORATION ©2021 · Catalog No. 11-808-539-01 · 6/15/2021

Verify that you have the most current version of this document from www.hvacpartners.com or
www.accounts.ivusystems.com or your local Carrier office.
Important changes are listed in Document revision history at the end of this document.
CARRIER CORPORATION ©2021. All rights reserved throughout the world. i-Vu is a registered trademark of Carrier
Corporation. All other trademarks are the property of their respective owners.

Contents
Introduction.................................................................................................................................................................. 1
What is the WSHP Open controller? ..................................................................................................................1
Safety considerations & handling warning.......................................................................................................3
Wiring inputs and outputs........................................................................................................................................... 4
Communications wiring .............................................................................................................................................. 6
Protocol overview..................................................................................................................................................6
BACnet MS/TP ......................................................................................................................................................7
To set up the WSHP Open for BACnet MS/TP ..................................................................................... 7
Adjusting BACnet MS/TP properties using an Equipment Touch ....................................................... 9
Troubleshooting BACnet MS/TP communication ..............................................................................11
BACnet ARC156................................................................................................................................................. 11
To set up the WSHP Open for BACnet ARC156 .................................................................................11
Troubleshooting ARC156 communication .........................................................................................13
Modbus................................................................................................................................................................ 13
To set up the WSHP Open for Modbus...............................................................................................13
Troubleshooting Modbus ....................................................................................................................15
Johnson N2 ......................................................................................................................................................... 16
To set up the WSHP Open for N2 .......................................................................................................16
Troubleshooting N2.............................................................................................................................17
LonWorks ............................................................................................................................................................ 18
To set up the WSHP Open for the LonWorks Option Card (Part #LON-OC) ......................................19
Commissioning the controller for LonWorks communication...........................................................20
Troubleshooting LonWorks .................................................................................................................20
Start-up.......................................................................................................................................................................22
Sequence of Operation .............................................................................................................................................23
Scheduling .......................................................................................................................................................... 23
Fire/Smoke detector input............................................................................................................................... 24
Shutdown input .................................................................................................................................................. 24
Indoor fan............................................................................................................................................................ 24
Cooling................................................................................................................................................................. 25
Reverse cycle heating ....................................................................................................................................... 26
Auxiliary heat...................................................................................................................................................... 27
Indoor air quality (IAQ) and demand control ventilation (DCV) .................................................................. 28
Dehumidification ............................................................................................................................................... 28
Waterside economizer ...................................................................................................................................... 29
Demand limiting ................................................................................................................................................ 30
Power failure restart delay............................................................................................................................... 30
Alarms ................................................................................................................................................................. 30
Troubleshooting the WSHP Open .............................................................................................................................32
LED's .................................................................................................................................................................... 32
Compliance ................................................................................................................................................................34
FCC Compliance................................................................................................................................................. 34
CE Compliance ................................................................................................................................................... 34
BACnet Compliance........................................................................................................................................... 34
Appendix A: Network Points List for WSHP Open ..................................................................................................35
Third party access to BACnet points in a controller ..................................................................................... 35
Network points list for BACnet and Modbus ................................................................................................. 38
Network points list for N2 and LonWorks...................................................................................................... 42
Appendix B: BACnet Protocol Implementation Conformance Statement ...........................................................45
Appendix C: Modbus Protocol Implementation Conformance Statement...........................................................46

Contents
Appendix D: Johnson N2 Protocol Implementation Conformance Statement ....................................................48
Appendix E: LonWorks Protocol Implementation Conformance Statement .......................................................50
Document revision history ........................................................................................................................................51

WSHP Open v3 CARRIER CORPORATION ©2021
Integration Guide All rights reserved
1
What is the WSHP Open controller?
The Water Source Heat Pump (WSHP) controller is available as an integrated component of a Carrier packaged
unit. Its internal application programming provides optimum performance and energy efficiency. WSHP Open
enables the unit to run in 100% stand-alone control mode or it can communicate to the Building Automation
System (BAS).
On board DIP switches allow you to select the baud rate and choose one of the following protocols:
•BACnet MS/TP
•BACnet ARC156
•Modbus
•Johnson N2
•LonWorks
The Equipment Touch is a touchscreen device with a 4.3 in. color LCD display that you connect to the Rnet port of
one of the following controllers to view or change its property values, schedule equipment, view trends and
alarms, and more, without having to access the system's server.
You can use Carrier’s Equipment Touch user interface with the WSHP Open controller using the 5-pin J12 Access
Port. See illustration below.
The WSHP Open's application supports detailed color graphics, status, properties, alarms, trends, performance,
configuration, and Help on the Equipment Touch. In addition, the WSHP Open Startup Wizard has screens to
facilitate the installation technician to initially configure the WSHP Open.
For more details about the Equipment Touch, see the Equipment Touch Installation and Setup Guide.
Introduction

Introduction
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Integration Guide All rights reserved
2

Introduction
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Integration Guide All rights reserved
3
Safety considerations & handling warning
WARNING
When you handle the WSHP Open:
•Do not contaminate the printed circuit board with fingerprints, moisture, or any foreign material.
•Do not touch components or leads.
•Handle the board by its edges.
•Isolate from high voltage or electrostatic discharge.
•Ensure that you are properly grounded.

Wiring inputs and outputs
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Integration Guide All rights reserved
4
WSHP Open Inputs and Outputs Table
Input/Output Type
Part Numbers
Type of I/O
Connection Pin
Numbers
I/O Channel
Inputs
SPT Sensors
ZS sensors
Wireless Adapter for
wireless sensors
Equipment Touch
For detailed information, see:
Carrier Sensor Installation Guide
ZS Sensors Installation or
Application Guide
Wireless Sensors Installation or
Application Guide
Equipment Touch Installation and
Setup Guide
Communicating
J13, 1 - 4
Rnet Port
Space Relative Humidity
33ZSENSRH-02
AI (4-20 mA)
J4 - 5 & 6
AI - 1
Indoor Air Quality
33ZCSPTCO2
AI (4-20 mA)
J4 - 2 & 3
AI - 2
Condensate Switch
N/A
BI (Dry Contacts)
J5 - 5 & 6
BI - 3
Stage 1 Compressor
Status
N/A
BI (Dry Contacts)
J1 - 10
BI - 5
Leaving Source Water
Temp
10K Type II
AI (10K Thermistor)
J2 - 1 & 2
AI - 6
Supply Air Temperature
33ZCSENSAT
AI (10K Thermistor)
J2 - 3 & 4
AI - 7
Supply Fan Status
N/A
BI (Dry Contacts)
J5 - 1 & 2
BI - 8
Occupancy Contact
N/A
BI (Dry Contacts)
J5 - 1 & 2
BI - 8
Smoke Detector Input**
N/A
24 Vac
J1 - 9
24 Vac IN
Outputs
Aux Heat - Modulating
(HW Valve/Water Econ)
N/A
AO (0-10 Vdc/
2-10 mA)
*
J2 - 4 & 5
AO - 1
Outside Air Damper
N/A
AO (0-10 Vdc/
2-10 mA)
*
J22 - 1 & 2
AO - 2
Supply Fan On/
Low speed (3-speed only)
N/A
BO Relay (24 Vac, 3A)
*
J1 - 4
BO - 1 (G)
W2-Aux Heat or 2-pos.
Water Economizer
N/A
BO Relay (24 Vac, 3A)
*
J1 - 5
BO - 2
Reversing Valve (B or O)
N/A
BO Relay (24 Vac, 3A)
*
J1 - 6
BO - 3 (RV)
Y2-Compressor 2nd stage
N/A
BO Relay (24 Vac, 3A)
J1 - 7
BO - 4 (Y2)
Y1-Compressor 1st stage
N/A
BO Relay (24 Vac, 3A)
J1 - 8
BO - 5 (Y1)
Dehumidification Relay
N/A
BO Relay (24 Vac, 3A)
*
J11 - 7 & 8 (N.O.)
BO - 6
Fan Speed Medium/Low
(3-speed Only)
N/A
BO Relay (24 Vac, 3A)
*
J11 - 5 & 6 (N.O.)
BO - 7
Fan Speed High/Low
(3-speed Only)
N/A
BO Relay (24 Vac, 3A)
*
J11 - 2 & 3 (N.O.)
BO - 8
Wiring inputs and outputs

Wiring inputs and outputs
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5
Input/Output Type
Part Numbers
Type of I/O
Connection Pin
Numbers
I/O Channel
Legend:
AI -Analog Input AO - Analog Output
BI -Digital Input BO - Digital Output
*
These outputs are configurable.
**
24 Vac required at this terminal to provide unit operation. Connect an isolated N.C. smoke detector contact (or jumper) between 24
Vac and J1 - 9.

Communications wiring
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6
Protocol overview
Protocols are the communication languages spoken by the control devices. The main purpose of a protocol is to
communicate information in the most efficient method possible. Different protocols exist to provide specific
information for different applications.
In the BAS, many different protocols might be used, depending on manufacturer. Different protocols do not
change the function of the controller, but they typically require the owner to change systems or components in
order to change from one protocol to another. communicates different types of protocols.
The WSHP Open can communicate 1 of 5 different protocols:
•BACnet MS/TP (page 7)
•BACnet ARC156 (page 11)
•Modbus (page 13)
•Johnson N2 (page 16)
•LonWorks (page 18)
The default setting is BACnet MS/TP. You set the protocol and baud rate using the SW3 DIP switches. The rotary
switches MSB (SW1) and LSB (SW2) set the board’s network address. See table below for specific switch settings.
The third party connects to the controller through port J19 for BACnet MS/TP, BACnet ARC156, Modbus, and N2,
and through J15 for the LonWorks Option Card.
NOTE You must cycle power after changing the rotary switches or after connecting the LonWorks Option Card to
J15.
SW3 DIP switch settings
Unused
Comm
Option port
Protocol
Baud rate
8
7
6
5
4
3
2
1
BACnet MS/TP
(Default)
Master
N/A
Off
Off
Off
On
Off
Select Baud
Select Baud
BACnet ARC156
N/A
Off
Off
Off
Off
Off
N/A
N/A
Modbus
Slave
N/A
Off
Off
On
On
Off
Select Baud
Select Baud
N2
Slave
N/A
Off
Off
Off
On
On
Off
Off
Lonworks
N/A
On
On
Off
On
Off
Off
On
Communications wiring

Communications wiring
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Integration Guide All rights reserved
7
Baud DIP switch settings
Baud Rate
DIP switch 2
DIP switch 1
9,600 bps
Off
Off
19.2 kbps
On
Off
38.4 kbps
Off
On
76.8 kbps (Default)
On
On
BACnet MS/TP
To set up the WSHP Open for BACnet MS/TP
Refer to Appendix B (page 45) for the Protocol Implementation Conformance Statement, or download the latest
from BACnet International http://www.bacnetinternational.net/catalog/index.php?m=28.
NOTE This controller counts as a full load on the MS/TP bus.
1 Turn off the WSHP Open's power.
NOTE Changes made to the switches when the controller is on will not take effect until the power is cycled!
2 Using the rotary switches MSB (SW1) and LSB (SW2), set a unique BACnet MS/TP MAC address for the
WSHP Open. Set the MSB (SW1) switch to the tens digit of the address, and set the LSB (SW2) switch to the
ones digit. Valid addresses are 01-99.
NOTE The rotary switches also determine the BACnet device instance of the controller on the BACnet
network. The BACnet device instance is automatically generated based on the scheme 16101xx, where “16”
is the BACnet vendor ID for Carrier Corporation, and xx equals the rotary switch address.
EXAMPLE To set the controller’s MS/TP MAC address to 01, point the arrow on the MSB (SW1) switch to 0
and the arrow on the LSB (SW2) switch to 1. Internally, the BACnet device instance is automatically
generated as 1610101.
10's 1's
1
3
4
5
2
7
8
9
6
0
1
3
4
5
2
7
8
9
6
0
S W1 S W2
M S B L SB
3 Set the SW3 DIP switches 1 and 2for the appropriate communications speed (9600, 19.2k, 38.4k, or 76.8k
bps).
NOTE Use the same baud rate and communication settings for all controllers on the network segment. The
WSHP Open is fixed at 8 data bits, No Parity, and 1 Stop bit for this protocol's communications.

Communications wiring
WSHP Open v3 CARRIER CORPORATION ©2021
Integration Guide All rights reserved
8
Baud DIP switch settings
Baud rate
2
1
9,600 bps
Off
Off
19.2 kbps
On
Off
38.4 kbps
Off
On
76.8 kbps
On
On
4 Set the remaining DIP switches as follows:
BACnet MS/TP DIP switch settings
8
7
6
5
4
3
Off
Off
Off
Off
On
Off
The following example shows the DIP switches set for 76.8k (Carrier default), and BACnet MS/TP.
5 Connect the BACnet MS/TP network to the controller's J19 Network Comm port. Connect to Net+, Net-, and
SHLD.
Wire specifications
○A dedicated 22 AWG shielded twisted pair wire (EIA 485)
○Maximum wire length 2000 feet (610 meters) or 32 nodes
○Devices should be daisy-chained and not star-wired
○Attach the drain/shield wire to both ends of the network segment and through every controller
NOTE Use the same polarity throughout the network segment.
6 Turn on the WSHP Open's power.

Communications wiring
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Integration Guide All rights reserved
9
Adjusting BACnet MS/TP properties using an Equipment Touch
You may need to adjust the following BACnet MS/TP protocol timing settings using the Equipment Touch.
Max Masters - defines the highest MS/TP Master MAC address on the MS/TP network.
For example, if there are 3 master nodes on an MS/TP network, and their MAC addresses are 1, 8, and 16, then
Max Masters would be set to 16 (since this is the highest MS/TP MAC address on the network).
This property optimizes MS/TP network communications by preventing token passes and “poll for master”
requests to non-existent Master nodes.
In the above example, MAC address 16 knows to pass the token back to MAC address 1, instead of counting up to
MAC address 127. Each MS/TP master node on the network must have their Max Masters set to this same value.
The default is 127.
Max Info Frames - defines the maximum number of responses that will be sent when the WSHP Open receives the
token. The default is 10 and should be ideal for the majority of applications. In cases where the WSHP Open is the
target of many requests, this number could be increased as high as 100 or 200.
NOTES
•BACnet MS/TP networks can be comprised of both master and slave nodes. Valid MAC addresses for master
nodes are 0 –127 and valid addresses for Slave nodes are 0 - 254.
•If the third party attempts to communicate to the controller but does not get a response, make sure the
controller is set as a BACnet MS/TP (m) master. The BACnet software asks the controllers, “Who Is?” This is
to auto-locate devices on the network. Only controllers set as masters will answer this request.
•See Appendix A for Network Points List.
•See Appendix B (page 45) for the BACnet Protocol Implementation Conformance Statement (PICS).
To set the Device Instance number or adjust the Max Masters or Max Info Frames using an Equipment Touch
1 In the Equipment Touch interface, navigate to the Properties Menu screen and click Login.
NOTE The following graphic is generic and not specific to your system.

Communications wiring
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Integration Guide All rights reserved
10
2 Type Touch for the password and click Done.
3 On the Properties Menu screen, scroll to the bottom of the list and click ET System.
4 On the ET System screen, click Setup.
5 On the Setup screen, click Module Setup.
6 On the Module Setup screen, click Communication.
On the Communication screen, edit the fields as needed:
7 Click the property box next to BACnet Device Instance, type the new number, and click Done.
8 Click the property box next to Max Masters and/or Max Info Frames, type a new value (1-127), and click
Done.
9 Click Save.

Communications wiring
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Integration Guide All rights reserved
11
Troubleshooting BACnet MS/TP communication
For detailed troubleshooting and a list of supported objects, get the controller's BACnet PICS from the Carrier
BACnet PICS website http://www.bacnetinternational.net/catalog/index.php?m=28. You must get your BACnet
Object list from the manufacturer.
The most common communication problems are the result of not properly following the configuration steps
outlined in this manual. Review all of the steps and use the following list to check your settings.
Verify accuracy of the following:
Hardware settings for BACnet MS/TP (8 Data bits, No Parity, and 1 Stop bit):
•Baud rate DIP switches DS2 and DS1
•BACnet MS/TP protocol DIP switches DS3 - DS6
•Jumper set to EIA-485
•Proper connection wiring
•Unique rotary address switches 1 –99. If controllers have duplicate addresses, network communication can
be lost.
•Unique BACnet Device Instance numbers. Default is 16101XX, with the rotary address switches defining XX. If
controllers have duplicate device instance numbers, network communication can be lost.
NOTES
•The controller recognizes physical changes (DIP switches, rotary switches, and jumpers) upon power up.
•If RX LED is solid, then the terminations are incorrect.
•If the network has greater than 32 devices or exceeds 2,000 feet, a Repeater should be installed.
•If a controller begins or ends a network segment, a terminating resistor may be needed.
BACnet ARC156
To set up the WSHP Open for BACnet ARC156
The WSHP Open’s latest supported function codes and capabilities are listed on the associated Protocol
Implementation Conformance Statement (PICS), Carrier BACnet PICS website
http://www.bacnetinternational.net/catalog/index.php?m=28.
1 Turn off the WSHP Open's power.
NOTE Changes made to the switches when the controller is on will not take effect until the power is cycled!
2 Using the rotary switches MSB (SW1) and LSB (SW2), set a unique BACnet MS/TP MAC address for the
WSHP Open. Set the MSB (SW1) switch to the tens digit of the address, and set the LSB (SW2) switch to the
ones digit. Valid addresses are 01-99.

Communications wiring
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Integration Guide All rights reserved
12
NOTE The rotary switches also determine the BACnet device instance of the controller on the BACnet
network. The BACnet device instance is automatically generated based on the scheme 16101xx, where “16”
is the BACnet vendor ID for Carrier Corporation, and xx equals the rotary switch address.
EXAMPLE To set the controller’s MAC address to 01, point the arrow on the MSB (SW1) switch to 0 and the
arrow on the LSB (SW2) switch to 1. Internally, the BACnet device instance is automatically generated as
1610101.
10's 1's
1
3
4
5
2
7
8
9
6
0
1
3
4
5
2
7
8
9
6
0
S W1 S W2
M S B L SB
3 Set the remaining DIP switches as follows:
BACnet ARC156 DIP switch settings
8
7
6
5
4
3
Off
Off
Off
Off
N/A
N/A
The following example shows the DIP switches set for BACnet ARC156.
4 Connect the BACnet ARC156 network to the controller's J19 Network Comm port. Connect to Net+, Net-, and
SHLD.
Wire specifications
○A dedicated 22 AWG shielded twisted pair wire (EIA 485)
○Maximum wire length 2000 feet (610 meters) or 32 nodes
○Devices should be daisy-chained and not star-wired
○Attach the drain/shield wire to both ends of the network segment and through every controller
NOTE Use the same polarity throughout the network segment.
5 Turn on the WSHP Open's power.

Communications wiring
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Integration Guide All rights reserved
13
Troubleshooting ARC156 communication
The most common communication problems result from not properly following the configuration steps outlined
above in this manual. Review all of the steps and use the following list to check your settings.
Verify accuracy of the following:
•Protocol DIP switches DS3 - DS6
•Proper connection wiring
•Unique rotary address switches 1 –99. If controllers have duplicate addresses, network communication can
be lost.
•Unique BACnet Device Instance numbers. Default is 16101XX, with the rotary address switches defining XX. If
controllers have duplicate device instance numbers, network communication can be lost.
NOTES
•The controller recognizes physical changes (DIP switches, rotary switches, and jumpers) upon power up.
•If RX LED is solid, then the terminations are incorrect.
•If the network has greater than 32 devices or exceeds 2,000 feet, a Repeater should be installed.
•If a controller begins or ends a network segment, a terminating resistor may be needed.
Software settings defined through the Equipment Touch device. To confirm settings, obtain a Modstat of the
device. On the Equipment Touch, click the link to the Modstat.
Modbus
To set up the WSHP Open for Modbus
Refer to Appendix C (page 46) for the Modbus Protocol Implementation Conformance Statement (PICS).
1 Turn off the WSHP Open's power.
NOTE Changes made to the switches when the controller is on will not take effect until the power is cycled!
2 Using the rotary switches, set a unique Modbus slave address for the WSHP Open. Set the MSB (SW1) switch
to the tens digit of the address, and set the LSB (SW2) switch to the ones digit. Valid Modbus slave
addresses are 01-99.
EXAMPLE To set the controller's Modbus slave address to 01, point the arrow on the MSB (SW1) switch to 0
and the arrow on the LSB (SW2) switch to 1.
10's 1's
1
3
4
5
2
7
8
9
6
0
1
3
4
5
2
7
8
9
6
0
S W1 S W2
M S B L SB

Communications wiring
WSHP Open v3 CARRIER CORPORATION ©2021
Integration Guide All rights reserved
14
3 Set the SW3DIP switches 1 and 2for the appropriate communications speed (9600, 19.2k, 38.4k, or 76.8k
bps).
NOTE Use the same baud rate and communication settings for all controllers on the network segment. The
WSHP Open is fixed at 8 data bits, No Parity, and 1 Stop bit for this protocol's communications.
Baud DIP switch settings
Baud rate
2
1
9,600 bps
Off
Off
19.2 kbps
On
Off
38.4 kbps
Off
On
76.8 kbps
On
On
4 Set the remaining DIP switches as follows:
Modbus DIP switch settings
8
7
6
5
4
3
Off
Off
Off
On
On
Off
The following example shows the DIP switches set for 9600 baud and Modbus.
5 Connect the Modbus EIA-485 network to the WSHP Open's J19 Network Comm port. Connect to Net+, Net-,
and SHLD.
Wire specifications
○A dedicated 22 AWG shielded twisted pair wire (EIA 485)
○Maximum wire length 2000 feet (610 meters) or 32 nodes
○Devices should be daisy-chained and not star-wired
○Attach the drain/shield wire to both ends of the network segment and through every controller
NOTE Use the same polarity throughout the network segment.
6 Turn on the WSHP Open's power.

Communications wiring
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Integration Guide All rights reserved
15
Troubleshooting Modbus
Check the following to troubleshoot your WSHP Open:
1 Verify that the BAS and controller are both set to speak the Modbus RTU protocol on the Comm Selector DIP
switches DS3 - DS6.
2 The BAS and the controller are both set for the same baud rate:
○Baud rate DIP switches DS2 and DS1
○Obtain a Modstat of the controller. Scroll to the bottom of the page to Network Communications to view
the active protocol and baud rate.
3 The BAS is configured to speak 2-wire EIA-485 to the controller. The BAS may have to configure jumper or DIP
switches on their end.
4 The BAS and the controller have the same communication settings (8 data bits, No Parity, and 1 stop bit).
•Proper connection wiring between the BAS and the controller.
1 Verify that the rotary address switches are set for the controller's unique slave address.
2 BAS must be reading or writing to the proper point addresses on the controller.
3 BAS is sending requests to the proper slave address of the controller.
NOTE Refer to Appendix C (page 46) for the Protocol Implementation Conformance Statement.
Modbus Exception Codes that might be returned from this controller
Codes
Name
Description
01
Illegal Function
The Modbus function code used in the query is not
supported by the controller.
02
Illegal Data
Address
The register address used in the query is not supported
by the controller.
04
Slave Device
Failure
The Modbus Master has attempted to write to a non-
existent register or a read-only register in the
controller.

Communications wiring
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Integration Guide All rights reserved
16
Johnson N2
To set up the WSHP Open for N2
Refer to Appendix D (page 48) for the N2 Protocol Implementation Conformance Statement (PICS).
1 Turn off the WSHP Open's power.
NOTE Changes made to the switches when the controller is on will not take effect until the power is cycled!
2 Using the rotary switches, set a unique N2 slave address for the WSHP Open. Set the MSB (SW1) switch to
the tens digit of the address, and set the LSB (SW2) switch to the ones digit. Valid N2 slave addresses are
01-99.
EXAMPLE To set the N2 slave address to 01, point the arrow on the MSB (SW1) switch to 0 and the arrow on
the LSB (SW1) switch to 1.
10's 1's
1
3
4
5
2
7
8
9
6
0
1
3
4
5
2
7
8
9
6
0
S W1 S W2
M S B L SB
3 Set the DIP switches 1 and 2for 9600 bps baud.
NOTE Use the same baud rate and communication settings for all controllers on the network segment. The
WSHP Open is fixed at 9600 bps baud, 8 data bits, No Parity, and 1 Stop bit.
4 Set the remaining DIP switches as follows:
N2 DIP switch settings
8
7
6
5
4
3
2
1
Off
Off
Off
Off
On
On
On
On
The following example shows the DIP switches set for 9600 baud and N2.