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MODGAS-X Module

Technical Guide

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Содержание MODGAS-X

Страница 1: ...MODGAS X Module Technical Guide...

Страница 2: ...hts reserved AAON is a registered trademark of AAON Inc Tulsa OK AAON assumes no responsibility for errors or omissions in this document This document is subject to change without notice www aaon com...

Страница 3: ...ting Staged Valves Communicating Wiring 15 INPUTS AND OUTPUTS 16 Inputs and Outputs 16 SEQUENCE OF OPERATION 18 Operating Modes 18 LCD SCREENS 20 Navigation Keys 20 Main Screens Map 21 MODGAS X Screen...

Страница 4: ...Valve No Staging Stand Alone Wiring Diagram 8 Figure 3 Single Modulating Valve No Staging Communicating Wiring Diagram 9 Figure 4 Single Modulating Valve Stand Alone Wiring Diagram 10 Figure 5 Single...

Страница 5: ...onfigurations One modulating valve Two staged modulating valves One or two modulating with multiple fixed staged valves Stand Alone Mode only The MODGAS X can be configured at the factory for the MAXI...

Страница 6: ...210 R 1uF 01uF 1962 2803 1212 6042 1502 1020 1002 2211 47uF 22uF 3 3uF 2211 2211 2211 5 73 2 62 2 04 4 09 0 57 0 21 5 04 5 63 5 24 1 68 1 20 0 25 MODGAS X AAON P N ASM01668 LABEL P N G041210 E BUS CON...

Страница 7: ...inserted and tightened into the terminal blocks Do not allow wire strands to stick out and touch adjoining terminals which could potentially cause a short circuit 7 When communication wiring is to be...

Страница 8: ...ut terminals maximum power consumption One Gas Valve 18 VA Two Gas Valves 33 VA Note 1 24 VAC must be connected so that all ground wires remain common 2 All wiring to be in accordance with local and n...

Страница 9: ...o that all ground wires remain common 2 All wiring to be in accordance with local and national electrical codes and specifications 40 VA transformer minimum 18 30 VAC GND Line Supply Air Temperature S...

Страница 10: ...all back to using only its onboard stages If communications is restored the MODGAS X will begin staging up if needed Fan Enable And Stage 1 Heat Mod Low Speed Fan See for jumper settings Only one Supp...

Страница 11: ...tage 15 Fixed 18 30 VAC GND 18 30 VAC GND power required 15 VA minimum E BUS cable connects to MODGAS X Figure 5 Single Modulating Valve and 14 Stages of Fixed Heat 12 Relay E BUS Expansion Module WAR...

Страница 12: ...GV2 24 VAC power input terminals maximum power consumption One Gas Valve 18 VA Two Gas Valves 33 VA YS102378 REV 1 Two Modulating Valves with up to 13 Additional Stages of Fixed Heat Stand Alone Wiri...

Страница 13: ...tage 15 Fixed 18 30 VAC GND 18 30 VAC GND power required 15 VA minimum E BUS cable connects to MODGAS X Figure 7 Two Modulating Valves and 13 Stages of Fixed Heat 12 Relay E BUS Expansion Module WARNI...

Страница 14: ...GV2 GV1 CR1 H1 CR2 MODGAS X AAON P N ASM01668 LABEL P N G041210 E BUS CONNECT I2C CONNECT 24 VAC GND CONTACT RATING 24 VAC IS 1 AMP MAX VOUT GND GAS VALVE TERMINALS COMM RELAY OUTPUT TERMINALS INPUT...

Страница 15: ...UX 1 LOW SPEED FAN AUX 2 Connect Supply Air Temperature Sensor to AI2 and GND or AI3 and GND on main controller This does not apply to retrofit applications See SAT Wiring Conditions Table I C cable c...

Страница 16: ...ut will supply a 0 20 VDC or 0 10 VDC output signal for control of the modulating gas valve With a 0 20 VDC valve the operation is reverse acting so high voltage means closed and low voltage means ope...

Страница 17: ...point The Stage Up Delay default is three minutes The Stage Down Delay default is one minute 12 Relay E BUS Expansion Module Stages 4 15 Fixed Heat These relays should only be used in Stand Alone Mode...

Страница 18: ...ht gas valves for 0 10 volt valves to maintain a desired Discharge Air Temperature It also controls the speed of the induced draft fan to maintain proper combustion in the heat exchanger Off Mode 1 If...

Страница 19: ...ted if the valve modulates above 34 3 4 VDC for five seconds Additional Stages of Heat If the MODGAS X is controlling more than one Stage of Heat it will use the following staging sequence 1 If the Mo...

Страница 20: ...navigate through the Main Menu Screen categories Editing Key Key Function UP or DOWN Use the UP or DOWN key to enter editing mode on a user adjustable screen Edit Mode is indicat ed by the underscore...

Страница 21: ...ALARMS Press to scroll through the ALARMS Screens Press to go to the SETPOINT Screens SETPOINT Press to scroll through the SETPOINT Screens Press to go to the FORCE VALVES Screens FORCE VALVES Press t...

Страница 22: ...t length errors This will stop at 9999 until power is cycled Example P XXXX 4 Number of initialization errors if communication is I2 C Example I XXXX SOFTWARE 1044 V XXX CURRENT SOFTWARE VERSION ADDRE...

Страница 23: ...perature Sensor has been disconnected for more than 60 seconds This alarm will be disabled when the sensor is reconnected VLV POS 100 VALVE POSITION 0 to 100 SA TEMP XX X SUPPLY AIR TEMPERATURE 40 F t...

Страница 24: ...F RESET HEATING SUPPLY AIR SETPOINT This is the maximum temperature at which the Supply Air Temperature will reset to It will only display in Stand Alone Mode The Reset Setpoint is set by the LCD Disp...

Страница 25: ...f the screens press the MENU button Diagnostic Screens Refer to the following map when navigating through the Diagnostic Screens From the DIAGNSTC Screen press ENTER to scroll through the screens DIAG...

Страница 26: ...You must press the ENTER key in order to save the configuration so that when any power cycles the unit will run with the saved settings MOD STG 1 NUMBER OF MODULATING STAGES 0 20 Volt Range is 1 or 2...

Страница 27: ...nd and subsequent stages of heat Range 1 120 seconds St MinDb XX MIN MODE DEADBAND Range 0 30 degrees NOTE If it is set to 0 Min Mode will not initialize and the sequence will continue to Heating Mode...

Страница 28: ...l blink an alarm code when an alarm s occurs The highest priority failure code will be indicated first You must correct the highest priority alarm before other problems will be indicated See Table 7 t...

Страница 29: ...AS X AAON P N ASM01668 LABEL P N G041210 E BUS CONNECT I2C CONNECT 24 VAC GND CONTACT RATING 24 VAC IS 1 AMP MAX VOUT GND GAS VALVE TERMINALS COMM RELAY OUTPUT TERMINALS INPUT TERMINALS TYPE HEAT EN B...

Страница 30: ...nd GND on specificAAON unit controllers Communications Mode Remove SAT and GND wiring from MODGAS X and ohm the sensor out this may indicate open or failed wiring Refer to Table 8 page 31 and Table 9...

Страница 31: ...ected from the controllers not powered 2 Use the voltage column to check sensors while connected to powered controllers Read voltage with meter set on DC volts Place the minus lead on GND terminal and...

Страница 32: ...45902 4 200 20 6 6 40147 4 095 25 3 9 35165 3 982 30 1 1 30805 3 862 35 1 7 27140 3 737 40 4 4 23874 3 605 45 7 2 21094 3 470 50 10 18655 3 330 52 11 1 17799 3 275 54 12 2 16956 3 217 56 13 3 16164 3...

Страница 33: ...e SAT sensor is shared between the two modules and always attaches to the MODGAS X See Table 11 page 34 for SAT Options Jumper Settings and see Figures 2 4 5 6 7 and 8 for wiring See Table 10 page 34...

Страница 34: ...nect to AAON unit controller using I2 C cable Install Supply Air Sensor on MHGRV X Connect to AAON unit controller using I2 C cable Install Supply Air Sensor on MODGAS X Connect to AAON unit controlle...

Страница 35: ...r or module it is currently on If it is currently installed on the MODGAS II module then reinstall it on the MODGAS X Step 3 Set the SAT Options Jumper per Table 12 page 34 Step 4 Connect power to the...

Страница 36: ...al Guide Figure 14 Two Wire 0 20 Volt Reverse Acting MAXITROL Selectra Stepper Valve Figure 15 Four Wire 0 10 Volt Directing Acting MAXITROL EXA STAR Stepper Valve APPENDIX C MAXITROL VALVES MAXITROL...

Страница 37: ...37 MODGAS X Technical Guide NOTES...

Страница 38: ...ed AAON Controls Support 866 918 1100 Monday through Friday 7 00 AM to 5 00 PM Central Standard Time Controls Support website www aaon com controlstechsupport AAON Factory Technical Support 918 382 64...

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