WSHP-454 Module
“
Imininingwane
- Model: WSHP-454
- Manufacturer: AAON
- Isidingo samandla: 24 VAC
- Sensor Type: Suction Pressure Sensor
- Isilinganiso Sokuxhumana Esidluliswayo: 1 Amp max @ 24 VAC
- Compatibility: Single or dual water circuit configuration
- Glycol Configurations: 0%-40% in increments of 5%
Imiyalo yokusetshenziswa komkhiqizo
Ukufakwa Nezintambo
Ukukhweza nokufakwa: Qinisekisa ngokwanele
mounting of the WSHP-454 Module in a suitable location with access
to power and necessary connections.
Ukufaka kanye Nezintambo: Xhuma amandla
supply to the WSHP-454 Module following the specified wiring
diagram. Ensure correct polarity to prevent damage to the
isilawuli.
Ukulandelana Kwemisebenzi
Ukulandelana Kokusebenza: The WSHP-454 Module
operates based on the configured water circuit and glycol
iphesentitage. Refer to the user manual for detailed operational
ukulandelana.
Ukuxazulula inkinga
Ukuxazulula inkinga: Uma kunezinkinga nge-
WSHP-454 Module, refer to the troubleshooting section of the user
manual. Contact qualified technical personnel if needed.
FAQ
Q: What should I do if my WSHP-454 Module is not operating
kahle?
A: If your module is not operating correctly,
ensure proper power supply and wiring connections. Refer to the
troubleshooting section in the user manual for guidance. If issues
persist, contact qualified technical personnel for assistance.
“`
WSHP-454 Module Technical Guide
ASM08017 SS1211
www.aaon.com AAON P/N: ASM08017 WSHP- 454
SUCTION PRESSURE SENSOR
+5V
PRES GND
PRES 1=A1, PRES 2=A2 PRES 3=B1, PRES 4=B2
ISILINGANISO SOXHUMANA NE-RELAY SI-1 AMP MAX @ 24 VAC
COMP. A1
R1
COMP. A2
R2
+5 TO RED, PRES TO WHT & GND TO BLK
COMP. B1
R3
BIN1- COMP A1 EN BIN2- COMP A2 EN BIN3- COMP B1 EN
BIN4- COMP B2 EN BIN5- REVERSING VALVE BIN6- H2O POF A BIN7- H2O POF B
COM- COMMON T1- LEAVING H2O TEMP A T2- LEAVING H2O TEMP B
4 54
COMP. B2
R4
I-ALARM
R5
I-COMM
RC
AOUT1 – NOT USED AOUT2 – NOT USED AOUT3 – NOT USED AOUT4 – NOT USED
GND +24 VAC
GND- GROUND
I-LABEL P/N: G161260
24 VAC AMANDLA KUPHELA! I-POLARITY KUMELE IBHEKE NOMA ISILAWULI SIZOLIMALA
VAV/ZONE BACNET® CONTROLLER TECHNICAL GUIDE
UKUBUYEKEZWA NOSUKU
SHINTSHA
Rev. A, March 17, 2025
Ukukhishwa Kwasekuqaleni
Leli bhukwana liyatholakala ukuze ulilande ku-www.aaon.com
AAON, Inc. 2425 South Yukon Ave. Tulsa, OK 74107-2728 www.aaon.com Factory Technical Support Phone: 918-382-6450 Ilawula Ifoni Yokusekela: 866-918-1100 All rights reserved. © MARCH 2025 AAON, Inc. It is the intent of AAON to provide accurate and current product information. However, in the interest of product improvement, AAON reserves the right to change pricing, specifications, and/or design of its product without notice, obligation, or liability.
AAON® is a registered trademark of AAON, Inc., Tulsa, OK. BACnet® is a registered trademark of ASHRAE Inc., Atlanta, GA. Copeland ScrollTM is a registered trademark of Emerson Electric Co., Saint Louis, MO. Danfoss VFD® is a registered trademark of Danfoss Commercial Compressors, S.A., Tallahassee, FL. EBTRON® is a registered trademark of Ebtron, Inc., Loris, SC. GreenTrolTM is a registered trademark of GreenTrol Automation, Inc. Loris, SC. Paragon MicroTransEQ Series Airflow Monitoring Station is a registered trademark of Paragon Controls, Inc., Santa Rosa, CA. White-Rodgers® is a registered trademark of Emerson Electric Co., Saint Louis, MO.
WSHP-454 Technical Guide
2
OKUQUKETHWE
PHELILEVIEW ……………………………………………………………………………………………………………………………………… 6 Features……………………………………………………………………………………………………………………………………………… 6
INSTALLATION & WIRING ………………………………………………………………………………………………………………. 7 Mounting and Installation ………………………………………………………………………………………………………………………. 7 Installation & Wiring ……………………………………………………………………………………………………………………………… 8
SEQUENCE OF OPERATIONS ………………………………………………………………………………………………………. 10 Sequence of Operation ……………………………………………………………………………………………………………………….. 10
LCD DISPLAY SCREENS ………………………………………………………………………………………………………………. 12 Navigation Keys & Main Screens Map…………………………………………………………………………………………………… 12 Protected Screens Map and WSHP Screens………………………………………………………………………………………….. 13 Alarms Screens………………………………………………………………………………………………………………………………….. 14 System A Status Screens…………………………………………………………………………………………………………………….. 15 System B Status Screens ……………………………………………………………………………………………………………………. 16 Setpoint Screens………………………………………………………………………………………………………………………………… 17 Configuration Screens ………………………………………………………………………………………………………………………… 18 Diagnostic & Force Outputs Screens…………………………………………………………………………………………………….. 19
TROUBLESHOOTING ……………………………………………………………………………………………………………………. 20 Troubleshooting …………………………………………………………………………………………………………………………………. 20
WSHP-454 Technical Guide
3
ITHEBULA IZINGANISO
Figure 1: Figure 2: Figure 3: Figure 4: Figure 5: Figure 6: Figure 7:
IZIBALO
WSHP-454 Dimensions …………………………………………………………………………………………………………………………. 7 WSHP-454 as Stand-Alone for Single Water Circuit ……………………………………………………………………………… 8 WSHP-454 as Stand-Alone for Dual Water Circuit ……………………………………………………………………………….. 9 LCD Display and Navigation Keys ……………………………………………………………………………………………………….. 12 Navigation Key Functions…………………………………………………………………………………………………………………….. 12 Operation Status LED Locations………………………………………………………………………………………………………….. 24 PRES 1-4 LED Locations …………………………………………………………………………………………………………………….. 25
WSHP-454 Technical Guide
4
ITHEBULA LAMATHEBULA
Table 1: Table 2: Table 3: Table 4: Table 5: Table 6: Table 7: Table 8: Table 9:
AMATHEBULA
WSHP-454 Module Inputs & Outputs …………………………………………………………………………………………………….10 Factory-Set Default Setpoints – Water Only……………………………………………………………………………………………10 Factory-Set Default Setpoints – Glycol ………………………………………………………………………………………………….. 11 Temperature/Resistance for Type III 10K Ohm Thermistor Sensors ……………………………………………………… 21 Temperature/Resistance for Type III 10K Ohm Thermistor Sensors, continued……………………………………..22 Status LED Blink Codes…………………………………………………………………………………………………………………………23 Alarm LED Blink Codes………………………………………………………………………………………………………………………….23 Coil Pressure/Voltage/Temp for Suction Pressure Transducers – R454 Refrigerant……………………………….23 PRES 1-4 LED Blink Codes …………………………………………………………………………………………………………………..24
WSHP-454 Technical Guide
5
PHELILEVIEW Izici
The WSHP-454 Module monitors the compressors on an AAON® Water Source Heat Pump unit and can disable the compressors based on low Suction Pressure, Leaving Water Temperature, and Water Proof of Flow inputs. It also utilizes a Delay Timer to prevent the compressors from turning on at the same time.
The WSHP-454 Module’s water circuit configuration can be either single or dual. There are nine glycol configurations for the WSHP454 Module–0%-40% in increments of 5%. The glycol will automatically default to 0%.
Features of the WSHP-454 include:
· Monitoring suction pressure, leaving water temperature, and water proof of flow.
· Provides Delay Timer to prevent compressors from turning on at the same time.
· Contains a 2×8 LCD character display and 4 buttons that allow for status display, setpoint changes, and configuration changes.
The WSHP-454 Module can be used stand-alone. The WSHP-454 Module requires a 24 VAC power connection with an appropriate VA rating.
Note: The WSHP-454 Module contains no user-serviceable
parts. Contact qualified technical personnel if your module is not operating correctly.
WSHP-454 Technical Guide
6
INSTALLATION & WIRING Mounting and Installation
Izidingo Zemvelo
Ukunikezwa kwamandla kagesi
The WSHP-454 Module needs to be installed in an environment The WSHP-454 Module requires a 24 VAC power connection with that can maintain a temperature range between -30°F and 150°F an appropriate VA rating. and not exceed 90% RH levels (non-condensing).
Ukukhweza
The WSHP-454 Module is housed in a plastic enclosure. It is designed to be mounted by using the 3 mounting holes in the enclosure base. It is important to mount the module in a location that is free from extreme high or low temperatures, moisture, dust, and dirt. Be careful not to damage the electronic components when mounting the module. See Figure 1 for Module dimensions (in inches).
ISEXWAYISO:
Observe polarity! All boards must be wired GND-to-GND and 24 VAC-to-VAC. Failure to observe polarity could result in
0.18 DIA. TYP. 3 PL.
2.07
0.29
IHLANGANE E-USA
5.64
www.aaon.com AAON P/N: ASM08017 WSHP- 454
SUCTION PRESSURE SENSOR
+5V
PRES GND
PRES 1=A1, PRES 2=A2 PRES 3=B1, PRES 4=B2
ISILINGANISO SOXHUMANA NE-RELAY SI-1 AMP MAX @ 24 VAC
COMP. A1
R1
COMP. A2
R2
+5 TO RED, PRES TO WHT & GND TO BLK
COMP. B1
R3
BIN1- COMP A1 EN BIN2- COMP A2 EN BIN3- COMP B1 EN
BIN4- COMP B2 EN BIN5- REVERSING VALVE BIN6- H2O POF A BIN7- H2O POF B
COM- COMMON T1- LEAVING H2O TEMP A T2- LEAVING H2O TEMP B
4 5 4
COMP. B2
R4
I-ALARM
R5
I-COMM
RC
AOUT1 – NOT USED AOUT2 – NOT USED AOUT3 – NOT USED AOUT4 – NOT USED
GND +24 VAC
GND- GROUND
I-LABEL P/N: G161260
24 VAC AMANDLA KUPHELA! I-POLARITY KUMELE IBHEKE NOMA ISILAWULI SIZOLIMALA
Note: Height is 1.49 inches.
Figure 1: WSHP-454 Dimensions
WSHP-454 Technical Guide
0.56 4.14 5.83
5.05
7
INSTALLATION & WIRING Installation & Wiring
Ukucatshangelwa Okubalulekile Kwezintambo
Stand-Alone Wiring Single Water Circuit
Please read carefully and apply the following information when wiring the WSHP-454 Module:
1. To operate the WSHP-454 Module in Stand-Alone mode, you must connect power to the 24 VAC input terminal block. Do not allow wire strands to stick out and touch adjoining terminals. This could potentially cause a short circuit.
2. All 24 VAC wiring must be connected so that all ground wires remain common. Failure to follow this procedure can result in damage to the module and connected devices.
3. Zonke izintambo kufanele zihambisane namakhodi kagesi wendawo kanye kazwelonke kanye nemininingwane.
4. Check all wiring leads at the terminal block for tightness. Be sure that wire strands do not stick out and touch adjacent terminals. Confirm that all transducers required for your system are mounted in the appropriate location and wired into the correct terminals.
To operate the WSHP-454 Module as Stand Alone, connect the Module to a 24 VAC power connection with an appropriate VA rating. See Figure 2 for wiring.
CIRCUIT A SUCTION PRESSURE TRANSDUCER
RD
+V
WH SIG 1
BK GND
CIRCUIT B SUCTION PRESSURE TRANSDUCER
RD
+V
WH SIG 1
BK GND
COMPRESSOR A1 ENABLE CONTACT COMPRESSOR A2 ENABLE CONTACT COMPRESSOR B1 ENABLE CONTACT COMPRESSOR B2 ENABLE CONTACT
HEAT ENABLE CONTACT WATER POF SYSTEM A CONTACT WATER POF SYSTEM B CONTACT
BIN1 BIN2 BIN3 BIN4 BIN5 BIN6 BIN7 COM
T1
GND
NOTE: ALL RELAY OUTPUTS ARE NORMALLY OPEN AND RATED FOR 24 VAC POWER ONLY – 1 AMP UMLAYEZO OMKHULU
www.aaon.com AAON P/N: ASM08017 WSHP- 454
SUCTION PRESSURE SENSOR
+5V
PRES GND
PRES 1=A1, PRES 2=A2 PRES 3=B1, PRES 4=B2
ISILINGANISO SOXHUMANA NE-RELAY SI-1 AMP MAX @ 24 VAC
COMP. A1
R1
COMP. A2
R2
+5 TO RED, PRES TO WHT & GND TO BLK
COMP. B1
R3
BIN1- COMP A1 EN BIN2- COMP A2 EN BIN3- COMP B1 EN
BIN4- COMP B2 EN BIN5- REVERSING VALVE BIN6- H2O POF A BIN7- H2O POF B
COM- COMMON T1- LEAVING H2O TEMP A T2- LEAVING H2O TEMP B
4 5 4
COMP. B2
R4
I-ALARM
R5
I-COMM
RC
AOUT1 – NOT USED AOUT2 – NOT USED AOUT3 – NOT USED AOUT4 – NOT USED
GND +24 VAC
GND- GROUND
I-LABEL P/N: G161260
24 VAC AMANDLA KUPHELA! I-POLARITY KUMELE IBHEKE NOMA ISILAWULI SIZOLIMALA
R1 R2 R3 R4
R5 COMM
COMPRESSOR A1 ENABLE COMPRESSOR A2 ENABLE COMPRESSOR B1 ENABLE COMPRESSOR B2 ENABLE ALARM OUTPUT
HVAC UNIT CONNECTIONS
QAPHELA:
OUTPUTS ARE NOT USED ON STAND ALONE APPLICATIONS
I-GND 24 VAC
LEAVING WATER TEMPERATURE
ER
Figure 2: WSHP-454 as Stand-Alone for Single Water Circuit
WSHP-454 Technical Guide
8
INSTALLATION & WIRING Installation & Wiring
Stand-Alone Wiring Dual Water Circuit
To operate the WSHP-454 Module as Stand Alone, connect the Module to a 24 VAC power connection with an appropriate VA rating. See Figure 3 for wiring.
CIRCUIT A1
RD
INGCINDEZI YOKUMUSA
WH
I-TRANSDUCER
BK
CIRCUIT A2
RD
INGCINDEZI YOKUMUSA
WH
I-TRANSDUCER
BK
CIRCUIT B1
RD
INGCINDEZI YOKUMUSA
WH
I-TRANSDUCER
BK
CIRCUIT B2
RD
INGCINDEZI YOKUMUSA
WH
I-TRANSDUCER
BK
COMPRESSOR A1 ENABLE CONTACT COMPRESSOR A2 ENABLE CONTACT COMPRESSOR B1 ENABLE CONTACT COMPRESSOR B2 ENABLE CONTACT
HEAT ENABLE CONTACT WATER POF SYSTEM A CONTACT WATER POF SYSTEM B CONTACT
+V SIG 1 GND
+V SIG 2 GND
+V SIG 1 GND
+V SIG 2 GND
BIN1 BIN2 BIN3 BIN4 BIN5 BIN6 BIN7 COM
T1 T2 GND
NOTE: ALL RELAY OUTPUTS ARE NORMALLY OPEN AND RATED FOR 24 VAC POWER ONLY – 1 AMP UMLAYEZO OMKHULU
www.aaon.com AAON P/N: ASM08017 WSHP- 454
SUCTION PRESSURE SENSOR
+5V
PRES GND
PRES 1=A1, PRES 2=A2 PRES 3=B1, PRES 4=B2
ISILINGANISO SOXHUMANA NE-RELAY SI-1 AMP MAX @ 24 VAC
COMP. A1
R1
COMP. A2
R2
+5 TO RED, PRES TO WHT & GND TO BLK
COMP. B1
R3
BIN1- COMP A1 EN BIN2- COMP A2 EN BIN3- COMP B1 EN
BIN4- COMP B2 EN BIN5- REVERSING VALVE BIN6- H2O POF A BIN7- H2O POF B
COM- COMMON T1- LEAVING H2O TEMP A T2- LEAVING H2O TEMP B
4 54
COMP. B2
R4
I-ALARM
R5
I-COMM
RC
AOUT1 – NOT USED AOUT2 – NOT USED AOUT3 – NOT USED AOUT4 – NOT USED
GND +24 VAC
GND- GROUND
I-LABEL P/N: G161260
24 VAC AMANDLA KUPHELA! I-POLARITY KUMELE IBHEKE NOMA ISILAWULI SIZOLIMALA
R1 R2 R3 R4
R5 COMM
COMPRESSOR A1 ENABLE COMPRESSOR A2 ENABLE COMPRESSOR B1 ENABLE COMPRESSOR B2 ENABLE ALARM OUTPUT
HVAC UNIT CONNECTIONS
QAPHELA:
OUTPUTS ARE NOT USED ON STAND ALONE APPLICATIONS
I-GND 24 VAC
ER
LEAVING WATER TEMPERATURE FOR SYSTEM A
LEAVING WATER TEMPERATURE FOR SYSTEM B
Figure 3: WSHP-454 as Stand-Alone for Dual Water Circuit
WSHP-454 Technical Guide
9
SEQUENCE OF OPERATIONS Sequence of Operation
Okujwayelekile
WSHP-454 Module Setpoints
The following inputs and outputs are available on the WSHP-454 The WSHP-454 Module setpoints are preset at AAON and are based Module. See Table 1 below to reference the Input/Output Map. on the unit’s design as well as the type of coolant being used in the
water loop. See Table 2, below & Table 3, page 11 for default settings.
Okokufaka Kanambambili
1
Compressor A1 Enable (BIN 1)
2
Compressor A2 Enable (BIN 2)
3
Compressor B1 Enable (BIN 3)
4
Compressor B2 Enable (BIN 4)
5
Heat Enable (BIN 5)
6
Water Proof of Flow System A (BIN 6)
7
Water Proof of Flow System B (BIN 7)
Okokufaka kwe-Analog
1
Suction Pressure A1 (Pres 1)
2
Suction Pressure A2 (Pres 2)
3
Suction Pressure B1 (Pres 3)
4
Suction Pressure B2 (Pres 4)
5
Leaving Water Temperature System A (T1)
6
Leaving Water Temperature System B (T2)
Imiphumela ye-Analog
1
AOUT1*
2
AOUT2*
3
AOUT3*
4
AOUT4*
Note: Analog outputs are not usd on Stand Alone Applications
Okokufaka kwe-Analog
1
Compressor A1 Enable Output (RLY1)
2
Compressor A2 Enable Output (RLY2)
3
Compressor B1 Enable Output (RLY3)
4
Compressor B2 Enable Output (RLY4)
5
Alarm Output (RLY5)
Note: These are default settings only. The setpoints may be
different based on the unit’s design and coolant being used.
Water-Only Default Setpoints
Incazelo
R454B
UNSAFE SUCTION
39 PSIG
LOW SUCTION HEAT MODE
96 PSIG
LOW SUCTION COOL MODE
81 PSIG
LOW LEAVING WATER TEMP
37ºF
Table 2: Factory-Set Default Setpoints – Water Only
Table 1: WSHP-454 Module Inputs & Outputs
WSHP-454 Technical Guide
10
SEQUENCE OF OPERATIONS Sequence of Operation
Incazelo
UNSAFE SUCTION LOW SUCTION HEAT MODE LOW SUCTION COOL MODE LOW LEAVING WATER TEMP
R454B 0%
I-Glycol
39 PSIG
R454B 5%
I-Glycol
39 PSIG
Glycol Default Setpoints
R454B 10%
I-Glycol
R454B 15%
I-Glycol
R454B 20%
I-Glycol
39 PSIG
39 PSIG
39 PSIG
R454B 25%
I-Glycol
39 PSIG
R454B 30%
I-Glycol
39 PSIG
R454B 35%
I-Glycol
39 PSIG
R454B 40%
I-Glycol
39 PSIG
96 PSIG
89 PSIG
83 PSIG
78 PSIG
71 PSIG
62 PSIG
55 PSIG
47 PSIG
43 PSIG
81 PSIG
81 PSIG
81 PSIG
81 PSIG
81 PSIG
81 PSIG
81 PSIG
81 PSIG
81 PSIG
37ºF
34ºF
30ºF
27ºF
20ºF
15ºF
9ºF
2ºF
0ºF
Table 3: Factory-Set Default Setpoints – Glycol
Imiyalo Yokufaka Yodwa
Imiyalo Yokufaka Yodwa
Compressor On/Off A 24 volt signal to Binary Inputs #1-4 initiates each Compressor’s On function. The source for this signal would typically come from Y1 to Y4 calls from the thermostat.
Heat Enable On/Off A 24 volt signal on this input indicates the unit is in the Heating Mode. Typically, the source for this signal is the “O” call from the thermostat.
Water Proof of Flow System On/Off A 24 volt signal to Binary Inputs #6-7 indicates Water Proof of Flow for each system.
Suction Pressure Analog Inputs Sensors from Analog Inputs #1-4 correlate with the Suction Pressure of each Compressor (250 PSI).
Leaving Water Temperature Thermistor Inputs T1 correlates with Compressors A1 & A2 (RLY1 and RLY2). T2 correlates with Compressors B1 & B2 (RLY3 and RLY4).
NOTE: When the term “ON” is used, it means there is 24 VAC on the appropriate Binary Input. When the term “OFF” is used, it means there is 0 VAC on the appropriate Binary Input.
Compressor On/Off A 24 volt signal to Binary Inputs #1-4 initiates each Compressor’s On function. The source for this signal would typically come from Y1 to Y4 calls from the thermostat.
Heat Enable On/Off A 24 volt signal to Binary Inputs #1-4 initiates each Compressor’s On function. The source for this signal would typically come from Y1 to Y4 calls from the thermostat.
Compressor Operation (Heat/Cool)
A compressor can energize if the following is true:
1. There is 24 VAC applied to the appropriate Binary Input for the Compressor.
2. If two compressors are enabled simultaneously, a 5 second staging delay will occur.
3. Suction Pressure is above the Low Suction Pressure Cooling (Heating) Setpoint.
4. Proof of Flow for the appropriate water loop is made
5. Leaving Water Temp is above the leaving Water Safety Setpoint (Heating Only).
6. A minimum off time of 3 minutes is met for the compressors.
Note: If the WSHP-454 Module receives a signal on the Heat Enable input, it will operate using the Heating Mode Setpoints.
WSHP-454 Technical Guide
11
LCD DISPLAY SCREENS Navigation Keys & Main Screens Map
Isikrini sokubonisa se-LCD nezinkinobho zokuzulazula
Imephu yezikrini eziyinhloko
The WSHP-454 Controller allows you to make configuration changes, view status, change setpoints, create force modes, and perform diagnostics using the keypad next to the LCD display. See Figure 4 and refer to Figure 5 for descriptions.
Refer to the following map when navigating through the LCD Main Screens. The first screen is the address screen. To scroll through the rest of the screens, press the <MENU> button.
ADDRESS #
Umfanekiso 4: Isibonisi se-LCD kanye Nokhiye Wokuzula
Cindezela Cindezela
WSHP-454 AAON
to scroll through WSHP Screens. to go to ALARM Screens.
AMA-ALAMU
Ukhiye Wokuzulazula
Umsebenzi Osemqoka
IMENU
Use the MENU key to navigate through the Main Menu Screens
UP
Sebenzisa lo khiye ukuze ulungise ama-setpoints futhi ushintshe
configurations. This key is also used to turn
Valve Force Mode on.
PHANSI
Use this key to adjust setpoints and change configurations. This key is also used to turn Valve Force Mode off.
NGENA
Use the Enter key to move through screens within Main Menu categories. Also, use this key to save setpoints and configuration changes.
Figure 5: Navigation Key Functions
Cindezela Cindezela
Cindezela Cindezela
to scroll through ALARMS Screens. to go to STATUS SYSTEM A Screens.
STATUS SYSTEM A
to scroll through STATUS SYSTEM A Screens. to go to STATUS SYSTEM B Screens.
STATUS SYSTEM B
Cindezela Cindezela
to scroll through STATUS SYSTEM B Screens. to go to SETPOINT Screens.
I-SETPOINT
Cindezela
to scroll through SETPOINT Screens.
WSHP-454 Technical Guide
12
LCD DISPLAY SCREENS Protected Screens Map and WSHP Screens
Protected Screens Map
Imephu yezikrini eziyinhloko
Refer to the following map when navigating through the LCD Protected Screens. From the WSHP Screen, press the <ENTER> twice until you get to the SOFTWARE Screen. Then hold the <UP> button for 5 seconds. To scroll through the rest of the screens, press the <MENU> button.
WSHP-454 AAON
Refer to the following map when navigating through the Main Screens. From the WSHP AAON Screen, press <ENTER> to scroll through the screens.
WSHP-454 AAON
S/A MODE
S/A MODE
S/A Mode means the controller is in Stand Alone Mode
I-SOFTWARE 1211vXXX
Bamba
imizuzwana emi-5.
CONFIG
DIAGNSTC
FORCE MODES
I-SOFTWARE 1211vXXX
CURRENT SOFTWARE VERSION
H20 CNFG SINGLE or DUAL
WATER CIRCUIT CONFIGURATION SINGLE (Typical for AAON Coil) or DUAL (Typical for AAON Tulsa)
REV VALV OFF=COOL or
OFF=HEAT REVERSING VALVE CONFIGURATION OFF=COOL (No signal on reversing valve input equals cool mode) OFF=HEAT (No signal on reversing valve input equals heat mode)
ADDRESS 1-4
WSHP-454 ADDRESS Default is 1.
ENTER TO EXIT
WSHP-454 Technical Guide
13
LCD DISPLAY SCREENS Alarms Screens
Izikrini ze-alamu
Bheka kumephu elandelayo uma viewing the Alarm Screens. These screens will display automatically when alarms are present.
AMA-ALAMU
LOW H2O: The Leaving Water Temperature has dropped below setpoint. This alarm will disable when the leaving water temperature rises 6 degrees above the setpoint.
NO PROOF OF FLOW: There is a call for a compressor and there is no Proof of Flow Input Enable for more than 3 minutes or if during Heat Pump heating, the Proof of Flow Enable is open for more than 2 seconds. This alarm will disable when Proof of Flow is enabled.
The alarms as is follows:
LOW SUCTION PRESSURE: The Circuit’s Suction Pressure has dropped below the Low Suction Pressure for longer than one minute. This alarm will disable ten minutes after Suction Pressure rises above the setpoint.
AKUKHO AMA-alamu: Lokhu kuzoboniswa uma kungekho ama-alamu amanje.
COMPRESSOR LOCKOUT (1-4):
· If a circuit’s Suction Pressure falls below the Low Suction Pressure Setpoint for longer than one minute twice within a two hour window, the compressor on that circuit will be locked out. Manual reset or change of mode is required to return to normal operation.
· If the Suction Pressure falls below the Unsafe Suction Setpoint for 5 seconds, that circuit’s compressor will locked out. Power will need to be cycled to restart the unit.
· If the Leaving Water Temperature falls below setpoint, the last compressor will be locked out until the Leaving Water Temperature rises 6 degrees above setpoint.
· The Leaving Water Temperature remains below setpoint for 1 minute or falls 3 degrees below setpoint. This alarm will disable when the leaving water temperature rises 12 degrees above the setpoint.
WSHP-454 Technical Guide
14
LCD DISPLAY SCREENS System A Status Screens
System A Status Screens
Refer to the following map when navigating through the System A Status Screens. From the SYSTEM A STATUS Screen, press <ENTER> to scroll through the screens.
PO FLOW YES or NO
SYSTEM STATUS A
PROOF OF WATER FLOW
Status Screens shown below will scroll automatically if LCD display is left on this screen for 20 seconds.
A1 COMP OFF,PENDING,ON or
Reason for Fail
SYSTEM A, COMPRESSOR 1 This screen displays the current status of the A1 Compressor.
OFF PENDING: Compressor is off, but a request is made to be on, but the
1 minimum off time has not been met. ON: HEAT or Cool
REASON FOR FAILURE: Low Pres, Lockout, Low H2O, No Flow
A1 PRES XXX
SYSTEM A, COMPRESSOR 1 PRESSURE READING
A2 PRES XXX or NOT USED
SYSTEM A, COMPRESSOR 2 PRESSURE READING If Single Water Configuration, this screen will display “NOT USED.”
A2 COMP OFF,PENDING,ON or
Reason for Fail
SYSTEM A, COMPRESSOR 2 This screen displays the current status of the A2 Compressor.
OFF PENDING: Compressor is off, but a request is made to be on, but the
1 minimum off time has not been met. ON: HEAT or Cool
REASON FOR FAILURE: Low Pres, Lockout, Low H2O, No Flow
H2O TEMP NO SENSR
LEAVING WATER TEMPERATURE READING OR “NO SENSOR”
AOUT1 X%
ANALOG OUTPUT 1 PERCENT 0 – 100%
AOUT2 X%
ANALOG OUTPUT 2 PERCENT 0 – 100%
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LCD DISPLAY SCREENS System B Status Screens
System B Status Screens
Refer to the following map when navigating through the System B Status Screens. From the SYSTEM B STATUS Screen, press <ENTER> to scroll through the screens.
SYSTEM B DISABLED
If System B is disabled, the above screen will appear.
SYSTEM STATUS B
Status Screens shown below will scroll automatically if LCD display is left on this screen for 20 seconds.
B1 COMP OFF,PENDING,ON or
Reason for Fail
SYSTEM B, COMPRESSOR 1 This screen displays the current status of the B1 Compressor.
OFF PENDING: Compressor is off, but a request is made to be on, but the
1 minimum off time has not been met. ON: HEAT or Cool
REASON FOR FAILURE: Low Pres, Lockout, Low H2O, No Flow
B2 COMP OFF,PENDING,ON or
Reason for Fail
SYSTEM B, COMPRESSOR 2 This screen displays the current status of the B2 Compressor.
OFF PENDING: Compressor is off, but a request is made to be on, but the
1 minimum off time has not been met. ON: HEAT or Cool
REASON FOR FAILURE: Low Pres, Lockout, Low H2O, No Flow
H2O TEMP NO SENSR LEAVING WATER TEMPERATURE READING OR “NO SENSOR”
PO FLOW YES or NO PROOF OF WATER FLOW
B1 PRES XXX
SYSTEM B, COMPRESSOR 1 PRESSURE READING
B2 PRES XXX or NOT USED
SYSTEM B, COMPRESSOR 2 PRESSURE READING If Single Water Configuration, this screen will display “NOT USED.”
AOUT3 X%
ANALOG OUTPUT 3 PERCENT 0 – 100%
AOUT4 X%
ANALOG OUTPUT 4 PERCENT 0 – 100%
WSHP-454 Technical Guide
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LCD DISPLAY SCREENS Setpoint Screens
Izikrini zokubeka
Refer to the following map when navigating through the Setpoints Status Screens. From the SETPOINTS SCREENS, press <ENTER> to scroll through the screens.
Note: The following screens are Status Screens. The Setpoints can’t be changed from these screens
IZIPHUMA
GLYCOL xx%
GLYCOL SETPOINT 0%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%
LOWSP HT XXX-XXX PSI
LOW SUCTION PRESSURE HEAT MODE SETPOINT
Glycol % 0% 5% 10% 15% 20%
Low Suction Heat Setpoint
96 PSI 89 PSI 83 PSI 78 PSI 71 PSI
Glycol % 25% 30% 35% 40%
Low Suction Heat Setpoint
62 PSI 55 PSI 47 PSI 43 PSI
LOWSP CL 81 PSI
LOW SUCTION PRESSURE COOL MODE SETPOINT
UNSAFESP 39 PSI
REFRIGNT 454B
REFRIGERANT 454B
LOW H2O XX DEG
LOW LEAVING WATER TEMPERATURE SETPOINT See Table Below
Glycol % 0% 5% 10% 15% 20%
Low Leaving Water
I-Temperature Setpoint
37ºF
34ºF
30ºF
27ºF
20ºF
Glycol % 25% 30% 35% 40%
Low Leaving Water
I-Temperature Setpoint
15ºF
9ºF
2ºF
0ºF
UNSAFE SUCTION PRESSURE SETPOINT
WSHP-454 Technical Guide
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LCD DISPLAY SCREENS Configuration Screens
Izikrini zokucushwa
Refer to the following map when navigating through the Confi guration Screens. From the CONFIG Screen, press <ENTER> to scroll through the screens and change setpoints. Use the <UP> and <DOWN> arrow keys to change your selections. Press <ENTER> to save any changes.
CONFIG
REV VALVE OFF=HEAT OFF=COOL
REVERSING VALVE CONFIGURATION OFF=HEAT: When Reversing valve input is off,
valve will be in heat mode OFF=COOL: When Reversing valve input is off,
valve will be in cool mode
H2O CNFG SNGL OR DUAL
WATER CIRCUIT CONFIGURATION SINGLE: One cooling tower for all compressors on this module
DUAL: Two cooling towers for compressors on this module
ADDRESS 1 TO 4
CURRENT ADDRESS OF THE BOARD Default = 1
SYSTEM B ENABLED DISABLED
SYSTEM B ENABLE When disabled, alarms and screens will be removed.
AAON ID 924 OR 1014
GLYCOL % 0 to 40
GLYCOL CONFIGURATION One cooling tower for all co. mpressors on this module Choose between 0,5,10,15,20,25,30,35,40 percent glycol.
This screen does not apply to R454-B units.
AOUT 1 = A1 / B1 or
A1/A2
REFRIGNT 454B
AOUT 1 CONFIGURATION A1 / B1 (default): Select this for new current configurations.
A1 / A2: Select this for “specific” older configurations.
REFRIGERANT CONFIGURATION 454B
WSHP-454 Technical Guide
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LCD DISPLAY SCREENS Diagnostic & Force Outputs Screens
Diagnostic Screens
Force Outputs Screens
Refer to the following map when navigating through the Diagnostic Screens. From the DIAGNSTC Screen, press <ENTER> to scroll through the screens.
DIAGNSTC
Refer to the following map when navigating through the Force Screens. From the FORCE OUPTUS Screen, press <ENTER>. At the FORCE MODE ON/OFF screen, press the <UP> arrow key to turn the FORCE MODE on and press the <DOWN> arrow key to turn the FORCE MODE off. Use the <UP> and <DOWN> arrow keys to increase and decrease the percentage.
PHOQA
WDOG CNT #
WATCH DOG TIMER Displays the number of times the board has been reset due
to watchdog timer overflow.
PWER CNT #
POWER LOSS COUNT Displays the number of times the board has been reset due to power loss. NOTE: If you hold the <UP> button for 5 seconds, all configurations and setpoints will return back to their default settings.
The Power Up counter will go to “1” when this occurs.
AOUT1 V 1.0
COMPRESSOR 1 VOLTAGE Displays the current voltage of the 1st analog output.
AOUT2 V 1.0
COMPRESSOR 2 VOLTAGE Displays the current voltage of the 2nd analog output.
PRES1-4 V 0.50
SUCTION PRESSURE SENSORS VOLTAGE Displays the current voltage of the suction pressure sensor.
WSHP-454 Technical Guide
FORCE MODE ON/OFF
Press the <UP> button to turn the Force Mode on. Press the <DOWN>
button to turn the Force Mode off.
FRC AO1 & A02 X%
FORCE VALVE 1 & 2 PERCENTAGE These screens only appears when Force Mode is on.
Press the <UP> button to increase the percentage. Press the <DOWN> button to
yehlisa iphesentitage. NOTE: When you turn the Force Mode back off or after 1 hour has elapsed, the valve will
reinitialize to zero.
COMP 1-4 ON OR OFF
FORCE COMPRESSORS 1-4 These screens allow you to force the
compressor relays on or off.
FORCE TIMEOUT
FORCE MODE TIME OUT This screen will appear when the Force Mode times out after 1 hour.
19
UKUXABULA INKINGA Ukuxazulula inkinga
Safety Monitoring for Single Water Circuit
Low Leaving Water Temperature
Proof of Flow 1. If there is a call for a compressor and there is no Proof of Flow Input Enable:
· The module will wait up to 3 minutes to activate the Proof of Flow Alarm LED(s) which will blink the code indicating failure.
2. 2. If the compressor(s) is (are) running and contact is opened for 2 seconds during Heat Pump Heating:
· Compressor(s) will be turned off.
3. If the compressor(s) are running and contact is opened for 2 seconds during Cooling:
· Proof of Flow Input will be ignored.
· No alarm will be generated.
Low Suction Pressure Detection 1. If any Circuit’s Suction Pressure falls below the Low Suction Pressure Setpoint for longer than 1 minute, then the following will occur:
· The compressor(s) on that circuit will turn off.
· Alarm LED will indicate Low Suction Pressure.
· Compressor(s) will be enabled again after 10 minutes if Suction Pressure rises above setpoint.
2. If any Circuit’s Suction Pressure falls below the Low Suction Pressure Setpoint for longer than 1 minute a second time within a two hour window, then the following will occur:
· The compressor(s) on that circuit will be locked out.
· Alarm LED will indicate a Compressor Lockout.
· Manual reset or change of mode (i.e., Cool to Heat) must occur to reset back to normal operation.
Unsafe Suction Pressure Detection If the Suction Pressure falls below the Unsafe Suction Setpoint for 5 seconds, the circuit’s compressor will be locked out immediately and will not be allowed to restart. You will need to reset the Power to restart the unit.
Note: This safety monitoring is only performed in the Heat Mode.
1. If the Leaving Water Temperature falls below setpoint, the following will occur: · The last compressor will turn off. · Alarm LED will indicate Compressor Low Water Temp Shutoff · Last compressor will be locked out until the Leaving temperature is 6 degrees above setpoint.
2. If the Leaving Water Temperature remains below setpoint for 1 minute or falls 3 degrees below setpoint, the following will occur:
· All compressors will deactivate.
· Alarm LED will indicate Compressor Low Water Temperature Shutoff
· All compressors will be locked out until the Leaving Temperature is 12 degrees above setpoint.
WSHP-454 Technical Guide
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UKUXABULA INKINGA Ukuxazulula inkinga
Ukuhlolwa Kwenzwa Yezinga lokushisa
The following sensor voltage and resistance tables are provided to aid in checking sensors that appear to be operating incorrectly. Many system operating problems can be traced to incorrect sensor wiring. Be sure all sensors are wired per the wiring diagrams in this manual.
Uma izinzwa zisabonakala zingasebenzi noma zifundeka kahle, hlola ivolumutage and/or resistance to confirm that the sensor is operating correctly per the tables. Please follow the notes and instructions below each chart when checking sensors.
Temperature – Resistance – Voltage for Type III 10 K Ohm Thermistor Sensors
Izinga lokushisa (ºF)
Ukumelana (Ohms)
Voltage @ Okokufaka (VDC)
-10
93333
4.620
-5
80531
4.550
0
69822
4.474
5
60552
4.390
10
52500
4.297
15
45902
4.200
20
40147
4.095
25
35165
3.982
30
30805
3.862
35
27140
3.737
40
23874
3.605
45
21094
3.470
50
18655
3.330
52
17799
3.275
54
16956
3.217
56
16164
3.160
58
15385
3.100
60
14681
3.042
62
14014
2.985
64
13382
2.927
66
12758
2.867
68
12191
2.810
69
11906
2.780
70
11652
2.752
71
11379
2.722
72
11136
2.695
73
10878
2.665
Ithebula 4: Izinga lokushisa/Ukumelana Nohlobo III 10K Ohm Izinzwa Thermistor
WSHP-454 Technical Guide
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UKUXABULA INKINGA Ukuxazulula inkinga
Temperature – Resistance – Voltage for Type III 10 K Ohm Thermistor Sensors
Izinga lokushisa (ºF)
Ukumelana (Ohms)
Voltage @ Okokufaka (VDC)
74
10625
2.635
75
10398
2.607
76
10158
2.577
78
9711
2.520
80
9302
2.465
82
8893
2.407
84
8514
2.352
86
8153
2.297
88
7805
2.242
90
7472
2.187
95
6716
2.055
100
6047
1.927
105
5453
1.805
110
4923
1.687
115
4449
1.575
120
4030
1.469
125
3656
1.369
130
3317
1.274
135
3015
1.185
140
2743
1.101
145
2502
1.024
150
2288
0.952
Table 5: Temperature/Resistance for Type III 10K Ohm Thermistor Sensors, continued
Ukuhlola I-Suction Pressure Transducer Yesiqandisi esingu-R454-B
The Evaporator Coil Temperature is calculated by converting the Suction Pressure to Temperature. The Suction Pressure is obtained by using the Suction Pressure Transducer, which is connected into the Suction Line of the Compressor.
Sebenzisa ivolumutage column to check the Suction Pressure Transducer while connected to the WSHP-454 Module. Read voltage with a meter set on DC volts. If the temperature/voltage noma ingcindezi/voltage readings do not align closely with the chart, your Suction Pressure Transducer is probably defective and will need to be replaced.
Thermistor Sensor Testing Instructions Use the resistance column to check the thermistor sensor while disconnected from the controllers (not powered).
Sebenzisa ivolumutagikholomu yokuhlola izinzwa ngenkathi ixhunywe kuzilawuli ezinamandla. Funda voltage enemitha ebekwe ku-DC volts. Beka “-” (minus) lead kutheminali ye-GND kanye neleveli ethi “+” (plus) kutheminali yokufaka inzwa ephenywayo.
Uma i-voltage ingaphezulu kuka-5.08 VDC, bese inzwa noma izintambo “zivuliwe.” Uma i-voltagi-e ingaphansi kuka-0.05 VDC, bese inzwa noma izintambo zifinyeziwe.
WSHP-454 Technical Guide
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UKUXABULA INKINGA Ukuxazulula inkinga
Ukusebenzisa ama-LED ukuze uqinisekise ukusebenza
The WSHP-454 Module is equipped with LEDs that can be used to verify operation and perform troubleshooting. There are LEDs for communication, operation modes, diagnostic codes, and relays. The Module has twenty LEDs–one used for power, one used for communications, one used for operation status, one used for alarms, five used for compressor relays, four used for Suction Pressure Transducer status, and seven used for Binary Input status. See Figures 6, page 24 & Figure 7, page 25 for the LED locations. The LEDs associated with these inputs and outputs allow you to see what is active without using a voltmeter.
Operation Status LEDs “STATUS” – This is the status blink code LED. It will light up and first blink the address of the Module. It will then blink out the Mode of Operation. See Table 6 below for Status Blink Code descriptions. The blink code descriptions are also located on the Module’s front cover. See Figure 6 for location.
“ALARM” – This is the diagnostic blink code LED. It will light up and blink out diagnostic codes. See Table 7 below for Diagnostic Blink Code descriptions. The blink code descriptions are also located on the Module’s front cover. See Figure 6 for location
No of Blinks
1 2 3
Status Off Mode Cool Mode Heat Mode
Table 6: Status LED Blink Codes
No of Blinks
1 2 3 4
Alarms Low Suction Pressure Compressor Lockout
Water Flow Failure Low Leaving Water Temperature
Table 7: Alarm LED Blink Codes
SUCTION PRESSURE TRANSDUCER COIL PRESSURE TEMPERATURE AND VOLTAGE
CHART FOR R454 REFRIGERANT
Izinga lokushisa (°F)
Izinga lokushisa (ºC)
Isiginali yokucindezela (psi).
I-DC Volts
25.88
-3.4
80.94
1.8
29.42
-1.4
87.16
1.9
32.81
0.5
93.39
2.0
36.05
2.6
99.62
2.1
39.16
4.0
105.84
2.2
42.15
5.6
112.07
2.3
45.02
7.2
118.29
2.4
47.79
8.8
124.52
2.5
50.47
10.3
130.75
2.6
53.06
11.7
136.97
2.7
55.57
13.1
143.20
2.8
57.99
14.4
149.42
2.9
60.36
15.8
155.65
3.0
62.65
17.0
161.88
3.1
64.88
18.3
168.10
3.2
67.05
19.5
174.32
3.3
69.16
20.6
180.55
3.4
71.23
21.8
186.78
3.5
73.24
22.9
193.00
3.6
75.20
24.0
199.23
3.7
77.12
25.1
205.46
3.8
79.00
26.1
211.68
3.9
80.83
27.1
217.91
4.0
82.63
28.1
224.14
4.1
84.39
29.1
230.36
4.2
86.11
30.1
236.59
4.3
Table 8: Coil Pressure/Voltage/Temp for Suction Pressure Transducers – R454 Refrigerant
WSHP-454 Technical Guide
23
UKUXABULA INKINGA Ukuxazulula inkinga
YS102374 REV 0 MADE IN USA
Suction Pressure Transducer LEDs “PRES 1-4” – There are LEDs for each of the Suction Pressure Transducers. Since each compressor has a sensor, these LEDs which are located on the top left of the WSHP-454 Module will give a better indication of which compressor is causing an alarm. See Table 9 for PRES LED status descriptions. See Figure 7 for locations.
No of Blinks Solid On
Solid Off 1
Status Sensor is Detected and is OK Sensor is Not Detected Low Suction Pressure on this Compressor
2
Compressor is Locked Out
Table 9: PRES 1-4 LED Blink Codes
Ukuxilongwa kwe-LED
“POWER” LED: When the WSHP-454 Module is powered up, the POWER LED (located above the address switches) should light up and stay on continuously. If it does not light up, check to be sure that the power wiring is connected to the board, the connections are tight, and the controller is powered (if connected). If after making all these checks, the POWER LED does not light up, the module is probably defective.
“COMM” LED: When the WSHP-454 Module is powered up while in Stand Alone Mode, the COMM LED does not light up.
“STATUS” LED: As previously described, when the WSHP Module is first powered up, the STATUS LED will blink out the Mode of Operation.
“ALARM” LED: As previously described, this LED will blink on and off to indicate alarms and diagnostics.
NOTE: The WSHP-454 Module contains no user-serviceable
parts. Contact qualified technical personnel if your Module is not operating correctly.
Figure 6: Operation Status LED Locations
WSHP-454 Technical Guide
24
UKUXABULA INKINGA Ukuxazulula inkinga
Figure 7: PRES 1-4 LED Locations
WSHP-454 Technical Guide
25
WSHP-454 Module Technical Guide Rev. A 250317
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