ACS Marvair GAA1024A Installation & Operation Manual Download

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Marvair GAA A/C w/Gas Heat I&O Manual

06/2023 Rev.5

Shipping Weight

BASIC MODEL

GAA1042A GAA1048A GAA1060A

SHIP WEIGHT - LBS

555

580

595

SHIP WEIGHT - KG

252

264

270

Filter Size (inches)

BASIC MODEL

GAA1042A

GAA1048A

GAA1060A

FILTER SIZE - IN

18 x 24 x 1

FILTER SIZE - MM

457 x 610 x 25

FILTER PART #

(2 FILTERS/UNIT)

81199

502 mm

1054 mm

10 mm

38 mm

57 mm

117 mm

COMPRESSOR ACCESS

FROM LEFT SIDE

92”

[

2337

]

Figure 3c. GAA1060A Dimensional Data

Summary of Contents for Marvair GAA1024A

Page 1: ...th INSTALLER Affix the instructions on the inside of the building adjacent to the thermostat END USER Retain this manual for future reference Air Conditioner Product Manual Vertical Wall Mount Air Con...

Page 2: ...T the UNIT UPRIGHT Laying it down on its side may cause oil to leave the compressor and breakage or damage to other components 3 TURN ELECTRICAL POWER OFFAT THE breaker or fuse box BEFORE installing o...

Page 3: ...tion ou entretien peut causer d g ts mat riels et dommages corporels ou m me mort Installation et interventions doivent tre effectu es par un installateur ou une agence de d pannage qualifi s ou par l...

Page 4: ...r Inlet and Outlet 61 7 11 Venting of the Furnace 61 7 12 Clearances 61 Chapter 8 Parts List 62 Chapter 9 WarrantyPolicy 9 1 Marvair Limited Product Warranty 64 Illustrations Figure 1 Enthalpy Sensor...

Page 5: ...Hand90 000BTUH ModelsGAA1042A GAA1048AandGAA1060A arefactory set up for natural gas with nominal heating capacities are 75 000 BTUH 100 000 BTUH and 125 000 BTUH The units are easily field convertible...

Page 6: ...sor None 18 Air Flow 1 Top Supply Bottom Return 19 Compressor Location D Left Hand E Right Hand 20 Filter Option A 2 Pleated MERV 8 AC HP C C 2 Charcoal D MERV 11 High Filtration Package E MERV 13 Hig...

Page 7: ...nition is not achieved with in 5 seconds the gas valve is shut off the inducer keeps running for an inter purge period of 60 seconds and additional trials follow the specified sequence If all 3 trials...

Page 8: ...tion Thermostatmustprovide the fan G signal to HVAC to activate the indoor blower Forced Mechanical Cooling When 24VAC is applied to the FC input of the economizer board the economizer damper is force...

Page 9: ...vice the motorized damper opens to 100 open position and the indoor blower is forced to operate During Emergency Ventilation mode the compressor and heater do not operate The relay has a wire lead ext...

Page 10: ...ormation to the end user Special features include 2 Stage operation with varying speed control to optimize latent and sensible capacity built in remote communication Modbus for monitoring and or contr...

Page 11: ...age 23 Control Board Power Indicator LED 2 2 Installation and Replacement ThePCBisfactoryinstalled ToinstallareplacementPCB usethesixmountingholesalongwiththeappropriate screw size to firmly secure th...

Page 12: ...elay in seconds 4 IBM Y1 Set 80 40 100 G Fan only and Y1 1st Stage Cooling Indoor Blower Speed Setting 5 IBM Y2 Set 100 40 100 Y2 2nd Stage Cooling Indoor Blower Speed Setting 6 OFM Select P P dC P PW...

Page 13: ...orhigh pressurelockout 6 OFM Select This setting allows the IBM Indoor Blower control signal to be configured for PWM or 0 10vdc control The default control output signal is PWM 7 OFM Set This is an i...

Page 14: ...default to compressor cooling if any sensor becomes disconnected or faulty ChangingtheECONOSelecttoN no willdisableeconomizeroperationandtheeconomizer function will be ignored 13 SensorType Thissettin...

Page 15: ...re Version Number The software version of the 92589 control board will be displayed on the seven segment display This is for informational purposes only 2 4 Operation Power The Marvair PCB requires 24...

Page 16: ...ps 5 0 Dehumidification Operation AC HP 5 1 Hot Gas Reheat 5 2 Electric Reheat 6 0 Refrigeration Protection 6 1 High Pressure lockout 6 2 Low Pressure Lockout Freeze Protection 6 3 Anti Short Cycle 7...

Page 17: ...ority This means that in any combination involving the G input the speed associated to Fan Only will never take precedence The priority list from Highest to Lowest goes as follows 1 Y2 Request 2 Y1 Re...

Page 18: ...l the switch reopens at 290 PSIG These outputs function as described until the Cooling setpoint is satisfied This is considered as ON OFF fan cycle control and the PSC motor will not modulate Note Sin...

Page 19: ...nce Y2 has higher priority These outputs remain energized until the cooling setpoint is satisfied Once the setpoint is satisfied the Compressor and the Outdoor fan outputs are de energized The Indoor...

Page 20: ...e testing of the air conditioner at the factory the control board has been configured for the sensor type used in the system There should be no need to change the sensor configuration If an enthalpy s...

Page 21: ...rovides a signal to the economizer controller for modulating the position of the damper The default supply air temperature is 55F in economizer cooling and is not adjustable A disconnected or faulty s...

Page 22: ...a defrost cycle based on the time selected in the control board configuration menu setting 8 The defrost time intervals selections are 30 60 and 90 minutes and the factory default setting is 30 minut...

Page 23: ...in off as long as the request for W2 is active Once the request for W2 satisfies the compressor will be allowed to operate The default setting for SCKT is N No the electric heat and compressor will be...

Page 24: ...re of 80F and 115F Systems with PSC Outdoor Motors utilizes a Fan Cycle Switch which closes at 400 PSIG to energize the OFR outdoor fan relay to start the outdoor fan which runs until the switch reope...

Page 25: ...ng it from excessive short cycling When the compressor goes off due to any fault emergency or if the cooling heat pump heating setpoint is satisfied a built in 3 minute timer locks the compressor for...

Page 26: ...and the system will operate in normal cooling mode until the request for FC is satisfied Once satisfied the system will be allowed to return to economizer operation if conditions are favorable 7 4Low...

Page 27: ...instructions could result in severe personal injury or death due to carbon monoxide poisoning if combustion products infiltrate into the building Check that all openings in the outside wall around the...

Page 28: ...burned completely or when the flame does not receive sufficient oxygen Therefore to help alert people of potentially dangerous carbon monoxide levels you should have a commercially available carbon m...

Page 29: ...ring cold weather you should take these precautions 1 Turn off the water supply to the structure and drain the water lines if possible and add an antifreeze for potable water to drain traps and toilet...

Page 30: ...au du ou des autres appareils Reportez vous la section Ventilation de la chaudi re dans ce manuel d instructions 4 1 Location and Clearances Choose the location or evaluate the existing location based...

Page 31: ...The furnace ductwork and filters are cleaned as necessary to remove drywall duct and construction debris from all HVAC system components after construction is completed d Verify proper furnace operat...

Page 32: ...gnations 15 Marvair GAA air conditioners with gas heat may be used for heating and cooling in buildings under construction provided thatALL installation procedures described in this manual are followe...

Page 33: ...eight BASIC MODEL GAA1024A GAA1030A GAA1036A SHIP WEIGHT LBS 335 415 415 SHIP WEIGHT KG 152 189 189 Filter Size inches BASIC MODEL GAA1024A GAA1030A GAA1036A FILTER SIZE IN 30 x 16 x 2 FILTER SIZE MM...

Page 34: ...RESSOR ACCESS FROM LEFT SIDE Shipping Weight BASIC MODEL GAA1042A GAA1048A SHIP WEIGHT LBS 555 580 SHIP WEIGHT KG 252 264 Filter Size inches BASIC MODEL GAA1042A GAA1048A FILTER SIZE IN 18 x 24 x 1 FI...

Page 35: ...GHT LBS 555 580 595 SHIP WEIGHT KG 252 264 270 Filter Size inches BASIC MODEL GAA1042A GAA1048A GAA1060A FILTER SIZE IN 18 x 24 x 1 FILTER SIZE MM 457 x 610 x 25 FILTER PART 2 FILTERS UNIT 81199 502 m...

Page 36: ...start makes excessive noise or will not operate return the unit to the freight carrier General 1 Inspect unit for completeness Check for missing parts e g hardware Refer to the installation kit inform...

Page 37: ...t and cool setpoints Manual or automatic changeover System switch Off Cool Heat Emergency Heat Fan Switch Auto On Keypad lockout available Ventilation terminals No batteries required Display indicates...

Page 38: ...incorrecte de la tuyauterie peut entra ner mort blessure corporelle et ou d g ts mat riels Sur chaque installation le syst me de conduites doit tre bien calcul et install afin d assurer un flux d air...

Page 39: ...tions to duct work and grilles Use fabric boots to prevent the transmission of vibration through the duct system The fabric must be U L rated UL 181 to a minimum of 197o F Note Followlocalcodesandstan...

Page 40: ...iping WARNING CARBON MONOXIDE FIRE AND EXPLOSION HAZARD Failure to follow safety warnings exactly could result in serious injury death and or property damage Models designated for Natural Gas are to b...

Page 41: ...mat riels Utilisez une cl pour maintenir la vanne de contr le de gaz de la chaudi re quand vous tournez coudes ou conduite de gaz afin d viter d endommager la vanne et la chaudi re 3 Use black iron o...

Page 42: ...on of LP gas is recommended WARNING FIRE OR EXPLOSION HAZARD A natural gas or LP gas leak ignited by an open flame or spark could result in death personal injury and or property damage Natural gas is...

Page 43: ...nne liaison de terre est r alis e avant de brancher la tension d alimentation secteur MarvairGAAairconditionerswithgasfurnaceMUSTbewiredandgroundedinaccordancewithelectrical codes or in the absence of...

Page 44: ...by monitoring the temperature of the refrigerant lines at the compressor The temperature should rise on the discharge line while the suction line temperature decreases Reverse rotation also results i...

Page 45: ...C I F I D I M U H E D M U H N A F G T A E H C I R T C E L E 2 W E V L A V G N I S R E V E R O T N E V Y C N E G R E M E V E L O O C D E C R O F C F 3 3 1 0 5 K 4 3 1 0 5 K 3 1 1 0 5 K D R O C E R N O...

Page 46: ...1 1 K B 811 KB 611 KB 711 KB 14 LB 04 Y 221 RB 121 KB 221 RB 121 KB 04 Y 14 LB 2 1 L B 6 KB 6 K B 31 KB 6 1 K B 61 KB 31 KB 801 R 701 LB 601 KB 211 KB 311 KB 211 KB 311 KB 5 1 1 R 4 1 1 R 411 R 511 R...

Page 47: ...ed verti cally Use only the vent supplied with the unit Vent connectors shall not be connected into any portion of mechanical draft systems operating under positive pressure WARNING CARBON MONOXIDE PO...

Page 48: ...MM DIATEMENT le gaz et l alimentation secteur de l unit V rifiez s il y a des erreurs de c blage des fuites de gaz ou des obstructions au soufflage 5 1 Gas Supply Pressure Gas supply pressure should b...

Page 49: ...d clockwise to increase the manifold pressure Set the manifold pressure to 3 5 w c for Natural Gas and 10 0 w c for LP gas Only adjust the setting marked HI A 3 32 Allen Key is required for adjustment...

Page 50: ...nace has the correct main burner orifices for the altitudeof the site Refer to the following table for the correct orifice for both natural and propane gas HMG 22 500 BTUH Burner Used with GAA1024 103...

Page 51: ...personal injury or loss of life The qualified service agency performing this work assumes the responsibility for the proper conversion of the appliance with this kit AVERTISSEMENT DANGER D INCENDIE MO...

Page 52: ...lly leak check union fitting and connection at gas valve using soap suds or a liquid detergent to each joint Bubbles indicate a leak Correct even the smallest leak immediately Do NOT use a flame to ch...

Page 53: ...rsion must be done by a qualified service agency in accordance with the following instructions or in the absence of local codes the applicable national code AVERTISSEMENT DANGER D INCENDIE EXPLOSION O...

Page 54: ...2 80 0 1102 2 40 0 0945 2 90 0 1142 Table 7 Altitude Orifice Sizing NOTE Data for LP gas is based upon a 0 60 specific gravity For fuels with different specific gravity consult the National Fuel Gas C...

Page 55: ...e caused by one or more of the following 1 Lint or dirt inside the burner or burner ports 2 Lint or dirt at the air inlet between the burner and the manifold pipe or 3 An obstruction over the burner p...

Page 56: ...switch to Off 2 Move the cooling temperature on the wall thermostat to a point higher than the room temperature Move the heating temperature to a temperature that is lower than the room temperature 3...

Page 57: ...ntrol will also attempt another ignition sequence after a one hour after a lock out occurrence 13 If flame is lost once it has been established the control will shut off the gas supply within 0 8 seco...

Page 58: ...58 Marvair GAA A C w Gas Heat I O Manual 06 2023 Rev 5 6 3 Start Up Checklist...

Page 59: ...ar once prior to the heating seasonandoncepriortothecoolingseason Atthistimethefilters evaporatorcoil condensercoil the cabinet and condensate drains the burner flame the burner and the combustion air...

Page 60: ...econdary drain has a stand pipe An obstruction will forcewatertodumpintothemiddleoftheunitanddrainoutthesidesofthe air conditioner causing discoloration of the side panels If discoloration is noted se...

Page 61: ...ged limiting air flow 6 Make sure all service panels are in place 7 11 Venting of the Furnace The MarvairGAAwall mounted air conditioner with gas heat furnace is a Category I furnace i e a cen tral fu...

Page 62: ...8 DD Outdoor Motor HP RPM 40190 40190 1 2 ECM 1 2 ECM Fan Blade Clockwise Rotation 30236 30236 T2404 20 T2404 20 High Pressure Control 660 Open 450 Close 70656 70656 Low Pressure Control 40 Open 60 Cl...

Page 63: ...ed Draft Blower 3000 RPM 0 9 A 230 v 30064 Induced Draft Blower 460 v Pressure Switch Low 0 36 WC PR 70377 Pressure Switch High 1 1 WC PF 70373 Flame Rollout Switch L270 Spark Igniter Flame Sensor In...

Page 64: ...r material charges 2 Damages caused by shipping accident abuse negligence misuse fire flood or Acts of God 3 Damages caused by operating or staging the unit in a corrosive environment 4 Damages caused...

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