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RSMD2R

Technical Guide

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Содержание RSMD2R

Страница 1: ...RSMD2R Technical Guide...

Страница 2: ...sions in this document This document is subject to change without notice RSMD2R REVISION LOG REVISION DATE CHANGE Rev A March 15 2021 Original www aaon com RSMD2R PARTS REFERENCE PART DESCRIPTION PART...

Страница 3: ...odule Screens 14 System Status Screens 15 Sensor Status Screens 16 Setpoint Status Screens 17 Alarms Screens 18 Alarm History and Protected Screens 20 Configuration and Diagnostic Screens 21 Diagnosti...

Страница 4: ...ion Keys 13 Figure 5 RSMD2R LED Locations 24 Figure 6 Default Two Condenser RSMD2R Module Wiring 29 Figure 7 Prism 2 Condenser Configuration Default Two Condenser Operations 30 Figure 8 Single Condens...

Страница 5: ...o analog outputs See Figures 2 3 pages 8 9 for wiring The RSMD2R Module provides the following Modulates the Compressors to satisfy the Suction Coil Saturated Temperature The Suction Coil Saturated Te...

Страница 6: ...TING IS 1 AMP MAX 24 VAC CONDENSER 1 COMP 1 COMP 2 ANALOG OUT REVERSING VALVE COMMON RELAY OUTPUT TERMINALS LABEL P N G088060 COND 1 COND 2 GND 24 VAC POWER ONLY WARNING POLARITY MUST BE OBSERVED OR T...

Страница 7: ...ll sensors should be 24 gauge Some sensors require two conductor wire and some require three or four conductor wire 5 Minimum wire size for 24 VAC thermostat wiring should be 22 gauge 6 Be sure that a...

Страница 8: ...door humidity levels WARNING Observe Polarity All boards must be wired with GND to GND and 24 VAC to 24 VAC Failure to observe polarity will result in damage to one or more of the boards Expansion mod...

Страница 9: ...Line Voltage Size transformer for correct total load RSMD2R 18 VA 10A250VAC 5A30VDC SA VDE G5Q 1A4 OMRON DC12V CHINA ALARM UP DOWN ENTER MENU AAON P N ASM02869 24 VAC GND RELAY CONTACT RATING IS 1 AM...

Страница 10: ...essor Discharge Temperature Sensor 1 TEMP1 6 Compressor Discharge Temperature Sensor 2 TEMP2 7 Leaving Water Temperature Sensor TEMP3 Binary Inputs 1 Compressor Status 1 BIN1 2 Compressor Status 2 BIN...

Страница 11: ...Status 2 When this wet contact input closes a 24 volt signal to Binary Input 2 indicates that Compressor 2 is running Typically the source for this is relay output 2 If Binary Input 2 opens Compressor...

Страница 12: ...re to temperature For Copeland Digital Scroll Compressor units the RSMD2R will modulate the Copeland Digital Scroll Compressor to maintain the Evaporator Coil Suction Saturation Temperature Setpoint a...

Страница 13: ...escriptions Navigation Key Key Function MENU Use the MENU key to move through screens within Main Menu categories and return to the Main Menu while at other screens UP Use this key to adjust setpoints...

Страница 14: ...reens Press to go to SENSOR STATUS screens SENSOR STATUS Press to scroll through SENSOR STATUS screens Press to go to ALARMS screens ALARMS Press to scroll through ALARMS screens Press to go to ALARM...

Страница 15: ...re OFF COOL HEAT DEHUMID FORCE COMP A1 B1 OFF MODULATING COMPRESSOR A1 B1 based on board address OFF MOD POSITION OFF Compressor is off MODULATING PERCENTAGE 0 100 COMP A2 B2 ON OFF COMPRESSOR A2 B2 b...

Страница 16: ...1 READING FROM INPUT HEAD PR1 XXX PSI HEAD PRESSURE 1 READING FROM INPUT SUCTION 2 XXX PSI SUCTION PRESSURE 2 READING FROM INPUT HEAD PR2 XXX PSI HEAD PRESSURE 2 READING FROM INPUT CALC CT1 XX DEG CAL...

Страница 17: ...SSURE SETPOINT STATUS Valid range is 275 to 475 PSI Default is 340 PSI IF CONFIGURED FOR FAN CYCLE THE FOLLOWING TWO SCREENS WILL DISPLAY FAN ON XX PSI HEAD PRESSURE HEADING WHEN FAN CYCLE IS ON FAN O...

Страница 18: ...Power must be cycled to clear the alarm LOW SUCTION PRESSURE 2 SP2 FAILURE This alarm will occur if Suction Pressure 2 stays below the low suction pressure setpoint for one minute or falls below 40 ps...

Страница 19: ...r and there is no Proof of Flow Input Enable for more than three minutes or if during Heat Pump heating the Proof of Flow Enable is open for more than two seconds This alarm will disable when Proof of...

Страница 20: ...S screen section NOTE The screen will display minutes for the first 60 minutes of alarm occurrence hours for the next 72 hours of alarm occurrence and days for the next 30 days of alarm occurrence Aft...

Страница 21: ...h the screens DIAGNSTC WDOG CNT WATCHDOG TIMER Displays the numbers of times the board has been reset due to watchdog timer overview POWR CNT POWER LOSS COUNT Displays the numbers of times the board h...

Страница 22: ...DE Displays the current status of Force Mode Values are ON OFF IF FORCE MODE IS ON THE FOLLOWING SCREENS WILL APPEAR RLY 1 5 ON OFF RELAYS 1 5 FORCE MODE Press the UP or DOWN buttons to select ON or O...

Страница 23: ...e only way to clear these alarm counts is by using Prism 2 and selecting Select Alarms to Delete from the ALARM button menu See Alarm Polling in the Prism 2 Technical Guide for more information Addres...

Страница 24: ...l display on the LCD display TheALARM LED also blinks when the expansion valve is initializing at startup COMM Every time the module receives a valid E BUS request from the VCCX2 Controller this LED w...

Страница 25: ...ropriate chart depending on the refrigerant you are using If the temperature voltage or pressure voltage readings do not align closely with the chart your Suction Pressure Transducer is probably defec...

Страница 26: ...plus lead on the sensor input terminal being investigated If the voltage is above 4 98 VDC then the sensor or wiring is open If the voltage is less than 0 38 VDC then the sensor or wiring is shorted D...

Страница 27: ...follow the notes and instructions that appear after the chart when checking sensors Table 6 0 5V Temperature Sensor Voltage Resistance for Type III Sensors Temperature Resistance Voltage for Type III...

Страница 28: ...terminal See Table 7 this page Head Pressure Transducer Chart Voltage Pressure Voltage Pressure 0 5 0 2 6 350 0 6 17 2 7 367 0 7 33 2 8 384 0 8 50 2 9 400 0 9 67 3 0 417 1 0 83 3 1 434 1 1 100 3 2 450...

Страница 29: ...P N G088060 COND 1 COND 2 GND 24 VAC POWER ONLY WARNING POLARITY MUST BE OBSERVED OR THE CONTROLLER WILL BE DAMAGED CONDENSER 2 HEAD PRES 1 5 V 5 V COMP DIS 1 COMP 1 SP 1 HP 1 COMP DIS 2 COMP 2 GND G...

Страница 30: ...ons RSMD2R Main Configuration Screen 2 Condenser Options Select the 2 Condensers per RSMD2R option on the above Hand Held Service Tool Screen HVAC Unit Application The Two Condenser per RSMD2R configu...

Страница 31: ...SHDN GND LEAVING H20 GND SUCTION PRES 2 HEAD PRES 2 5 V 5 V SP 2 HP 2 GND GND R SHD T E BUS R SHD T DUAL E BUS EXPANSION RSMD2R www aaon com SUCTION PRES 1 Note All relay outputs are normally open and...

Страница 32: ...2 Condenser Options Select the 1 Condenser for 1 RSMD2R option on the above Hand Held Service Tool Screen HVAC Unit Application The Single Condenser for One RSMD2R configuration is used with the foll...

Страница 33: ...EXPANSION RSMD2R www aaon com SUCTION PRES 1 Note All relay outputs are normally open and rated for 24 VAC power only 1 Amp maximum load 24 VAC ONLY COMPRESSOR 1 ENABLE COMPRESSOR 2 ENABLE CONDENSER...

Страница 34: ...dules RSMD2R Main Configuration Screen 2 Condenser Options Select the 1 Condenser for 2 RSMD2Rs option on the above Hand Held Service Tool Screen HVAC Unit Application The Single Condenser for Two RSM...

Страница 35: ...aon com SUCTION PRES 1 Note All relay outputs are normally open and rated for 24 VAC power only 1 Amp maximum load 24 VAC ONLY COMPRESSOR 1 ENABLE COMPRESSOR 2 ENABLE CONDENSER 1 ENABLE CONDENSER 2 EN...

Страница 36: ...ree Modules RSMD2R Main Configuration Screen 2 Condenser Options Select the 1 Condenser for 3 RSMD2Rs option on the above Hand Held Service Tool Screen HVAC Unit Application The One Condenser for Thre...

Страница 37: ...D 2 GND 24 VAC POWER ONLY WARNING POLARITY MUST BE OBSERVED OR THE CONTROLLER WILL BE DAMAGED CONDENSER 2 HEAD PRES 1 5 V 5 V COMP DIS 1 COMP 1 SP 1 HP 1 COMP DIS 2 COMP 2 GND GND OA COIL POWF EMER SH...

Страница 38: ...CONDENSER 2 HEAD PRES 1 5 V 5 V COMP DIS 1 COMP 1 SP 1 HP 1 COMP DIS 2 COMP 2 GND GND OA COIL POWF EMER SHDN GND LEAVING H20 GND SUCTION PRES 2 HEAD PRES 2 5 V 5 V SP 2 HP 2 GND GND R SHD T E BUS R S...

Страница 39: ...Main Configuration Screen 2 Condenser Options Select the 2 Condensers for 2 RSMD2Rs option on the above Hand Held Service Tool Screen HVAC Unit Application The Two Condensers per Two RSMD2Rs configur...

Страница 40: ...n to have the Condenser Fan turn On Off with the Compressors This can also be selected when No Head Pressure Control is required Select this option if the Condenser Fan cycles On Off based on the Fan...

Страница 41: ...41 RSMD2R Technical Guide NOTES...

Страница 42: ...15 AAON Factory Technical Support 918 382 6450 techsupport aaon com AAON Controls Support 866 918 1100 Monday through Friday 7 00 AM to 5 00 PM Central Standard Time Controls Support website www aaon...

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