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Marvair MAA/MGA Wall Mount AC Installation & Operation Manual

05/2023 Rev.21

49

Chapter 7 Warranty

7.1 

Marvair, Inc.  Limited Product Warranty

Marvair Inc., warrants its products to be free from defects in materials and workmanship under normal use to the original purchaser 

for the period of time in the table below. If any part of your  product fails within 12 months from start-up, or 18 months from 

shipment from the factory,  whichever comes first, Marvair, Inc.  will furnish without charge, EXW Cordele, Georgia, the required 

replacement part. The owner must provide proof of the date of the original start-up. The contractor’s invoice, the certificate of 

occupancy, or similar documents are examples of acceptable proof of the date of the original start-up.

Marvair, ICE, Eubank Products

90 Days

1

 w/Flat Rate Labor

2

 (See Marvair, ICE, Eubank Flat Rate Labor Guidelines)

1 Year Parts

2,3

5 Years Compressor

2

1

If any part of your Marvair, Inc.  unit fails within 90 days of the commencement of the warranty, Marvair, Inc.  will furnish without charge, EX Works, Cordele, Georgia, the 

required replacement part and pay for the labor to replace the part in accordance with the Marvair, Inc. Flat Rate Labor Guidelines.

2

All OTR (over the road) applications that are moved from one location to another: Factory Warranty applies only up to the point of initial start-up and test at all OEM 

manufacturing locations or subsequent facility. Once it goes into OTR service, the warranty expires immediately for compressor and sealed system components. This OTR 

exemption does not apply to relocatable classrooms, construction or office trailers.

3

All warranty replacement parts shall be shipped Ground only. Expedited shipping is available upon request for additional cost.

The responsibility of the equipment owner includes:

1.  To operate the equipment in accordance with the manufacturer’s instructions.

2.  To provide easy accessibility for servicing.

3.  To check and reset any circuit breaker(s) and/or disconnect(s) prior to calling for service.

4.  To keep the unit clean and free of dirt and containment and replace filters as required.

5.  To keep the outdoor coil clean and free of leaves, paper, or other debris.

6.  To pay the charges incurred when any of the above have not been done.

7.  To pay for repair or replacement of any material or part other than those within the Marvair unit or controller.

Marvair, Inc.,  will not be responsible for labor after 90 days, transportation costs, delays or failures to complete repairs caused by 

events beyond our control (labor hours incurred due to required site-specific training, time waiting to gain access, or extended drive 

time for remote sites). This warranty does not cover:

1.  Any transportation, related service labor, diagnosis calls, filter, driers, refrigerant, or any other 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 by improper application of the product.

5.  Damages caused by failing to perform proper routine maintenance.

6.  Expenses incurred for erecting, disconnecting or dismantling the product or installing the replacement part(s).

7.  Products not installed or operated according to the included instructions, local codes, and good trade practices.

8.  Products moved from the original installation site.

9.  Products lost or stolen

10.  Consequential damages or incidental expenses including losses to persons, property or business.

11.  Modifications to original unit after it leaves the factory, such as breaking into any part of the sealed systems unless 

authorized in advance in writing by Marvair, Inc.. 

12.  Damages as a result of operating as a construction site cooler / dehumidifier.

When labor (first 90 days only)  is required, it must be performed during normal working hours (8:00 AM - 5:00 PM) Monday - Friday 

and must be performed by Marvair, Inc.,  personnel or a designated Service Representative. 
The owner of the product may ship the allegedly defective or malfunctioning product or part to Marvair, Inc.,, at such owner’s 

expense, and Marvair, Inc.,  will diagnose the defect and, if the defect is covered under this warranty, Marvair, Inc.,  will honor its 

warranty and furnish the required replacement part. All costs for shipment and risk of loss during shipment of the product to 

Marvair, Inc., and back to the owner shall be the responsibility and liability of the owner. Upon written request by an owner, Marvair, 

Inc., may arrange for remote diagnosis of the allegedly defective or malfunctioning product or part but all costs for transportation, 

lodging and related expenses with regard to such diagnostic services shall be the responsibility and liability of the owner.
An owner requesting performance under this Warranty shall provide reasonable access to the allegedly defective or malfunctioning 

product or part to Marvair, Inc., and its authorized agents and employees.
THIS WARRANTY CONSTITUTES THE EXCLUSIVE REMEDY OF ANY PURCHASER OF A MARVAIR HEAT PUMP OR AIR CONDITIONER 

AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTY 

OF MERCHANTABILITY OR FITNESS FOR USE, TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT SHALL ANY IMPLIED 

WARRANTY OF MERCHANTABILITY OR FITNESS FOR USE EXCEED THE TERMS OF THE APPLICABLE WARRANTY STATED ABOVE 

AND MARVAIR SHALL HAVE NO OTHER OBLIGATION OR LIABILITY. IN NO EVENT SHALL MARVAIR BE LIABLE FOR INCIDENTAL OR 

CONSEQUENTIAL DAMAGES OR MONETARY DAMAGES.
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE-TO-

STATE. Some states do not allow limitations or exclusions, so the above limitations and exclusions may not apply to you.  

  

Содержание Marvair MAA1018A

Страница 1: ...f this manual can be found at www Marvair com IMPORTANT This manual may include information for options and features which may not be included on the unit being installed Refer to the unit data label...

Страница 2: ...T Laying it down on its side may cause oil to leave the compressor and breakage or damage to other components 3 TURN ELECTRICAL POWER OFF AT THE breaker or fuse box BEFORE installing or working on the...

Страница 3: ...on the inside of the building adjacent to the thermostat END USER Retain these instructions for future reference Table of Contents Chapter 1 Marvair Wall Mount Air Conditioner Description Specificatio...

Страница 4: ...omizer 14 Figure 1d Typical Electrical Schematic Model MAA Alternate Construction with Economizer 15 Figure 1e Typical Electrical Schematic Model MAA Alternate Construction with Economizer 16 Figure 2...

Страница 5: ...x A for instructions on field installation of electric heat Marvair air conditioners feature an exclusive electronic control board The control board consolidates several of the electrical components a...

Страница 6: ...R Crank Case Heater CCH T Hard Start w EFS U Hard Start w Hot Gas Bypass V Hard Start w Low Ambient CCH EFS W Low Ambient w CCH Y Low Ambient w CCH FCC Z Low Ambient w CCH EFS 1 Low Ambient w FCC 2 Lo...

Страница 7: ...del INCHES MILLIMETERS PART NUMBER FILTERS PER UNIT MERV RATING MAA1018A 14 x 12 1 356 x 305 x 25 P 80122 1 N A MAA1020A 1024A 16 x 25 x 2 406 x 635 x 51 80137 1 8 MAA1024A 1030A 1036A B2 INTERNAL 16...

Страница 8: ...of outside air into the enclosure when the outdoor air conditions are suitable to reduce the need for mechanical cooling save energy and extend compressor life Depending upon the options selected the...

Страница 9: ...nly Used in specialty applications i e Magnetic Resonance Imaging MRI buildings to prevent magnetic voltage disturbance caused by compressor cycling Two hot gas bypass option packages are available to...

Страница 10: ...s performance in hot ambient temperatures High Filtration Selected units are built with larger blowers motors for use with higher efficiency filters with MERV ratings of 11 13 and 14 when tested to AS...

Страница 11: ...el Two stainless steel cabinet constructions are available the complete cabinet including most internal sheet metal or only the exterior sheet metal 1 7 Electrical Operation The compressor and condens...

Страница 12: ...O C L L A N O D E R I U Q E R E B T O N Y A M R E T A E H E S A C K N A R C 3 T U O K C O L L L I W T I N U E H T D N A E C I W T D E N E P O S A H S P H E H T N E H W T L U A F E R U S S E R P H G I...

Страница 13: ...E R I W P A T R E M R O S N A R T E G N A R O D N A D E R S R O S S E R P M O C L L A N O D E R I U Q E R E B T O N Y A M R E T A E H E S A C K N A R C 3 T U O K C O L L L I W T I N U E H T D N A E C...

Страница 14: ...14 Marvair MAA MGA Wall Mount AC Installation Operation Manual 05 2023 Rev 21 Figure 1c Typical Electrical Schematic Economizer Model MAA Alternate Construction...

Страница 15: ...Marvair MAA MGA Wall Mount AC Installation Operation Manual 05 2023 Rev 21 15 Figure 1d Typical Electrical Schematic Economizer Model MAA Alternate Construction...

Страница 16: ...16 Marvair MAA MGA Wall Mount AC Installation Operation Manual 05 2023 Rev 21 Figure 1e Typical Electrical Schematic Economizer Model MAA Alternate Construction...

Страница 17: ...le information 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...

Страница 18: ...d Stage 23 Control Board Power Indicator LED 2 2 Installation and Replacement The PCB is factory installed To install a replacement PCB use the six mounting holes along with the appropriate screw size...

Страница 19: ...Blower off delay 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...

Страница 20: ...ow pressureorhigh 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 T...

Страница 21: ...ystem will default to compressor cooling if any sensor becomes disconnected or faulty ChangingtheECONOSelecttoN no willdisableeconomizeroperationandtheeconomizer function will be ignored 13 SensorType...

Страница 22: ...n 25 Software 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...

Страница 23: ...DD Heat Pumps 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 Sho...

Страница 24: ...t priority 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...

Страница 25: ...ns until 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 N...

Страница 26: ...Y1 speed since 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...

Страница 27: ...e During the 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...

Страница 28: ...cture and provides 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...

Страница 29: ...ill initiate 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...

Страница 30: ...r will remain 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 compres...

Страница 31: ...ne temperature 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...

Страница 32: ...by protecting 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 comp...

Страница 33: ...Modbus 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...

Страница 34: ...pressor will not start makes excessive noise or will not pump return the unit to the freight carrier 3 2 Installation Requirements General 1 Inspect unit for completeness Check for missing parts e g h...

Страница 35: ...m 24 inches 61 cm 6 inches 15 cm 1030A 1036A 30 inches 76 cm 18 inches 46 cm 24 inches 61 cm 6 inches 15 cm 1042A 1048A 1060A 2060A 30 inches 76 cm 30 inches 76 cm 24 inches 61 cm 6 inches 15 cm 1072A...

Страница 36: ...an Non volatile program memory P N 50107 Grilles Wall Sleeves Supply Grilles For MAA1018A 17 x 5 432 mm x 127 mm P N 80682 For MAA1020A MAA1024A MAA1024A B2 20 x 8 508 mm x 203 mm P N 80674 For MAA103...

Страница 37: ...his manual is intended for use by a qualified service agency that is experienced in such work is familiar with all precautions and safety procedures required in such work and is equipped with the prop...

Страница 38: ...m of the unit Galvanized metal duct extensions should be used to simplify connections to duct work and grilles Use fabric boots to prevent the transmission of vibration through the duct system The fab...

Страница 39: ...d on the wall You must stabilize the unit on the bracket with the lifting device or by some other means the bracket alone is not sufficient 3 Make sure that the duct flanges are properly aligned with...

Страница 40: ...ressure drops and the discharge pressure rises when the compressor is energized An alternate method of verification for self contained system with small critical refrigerant charges where the installa...

Страница 41: ...t meter set to the 300 volt scale measure voltage between terminal L1 on the compressor contactor of unit 1 and terminal L1 on the compressor contactor of unit 2 If voltage is present units are wired...

Страница 42: ...industry set points to facilitate installation If desired each of the set points can be quickly and easily changed in the field by the installer It can be used with Marvair s unique vertical packaged...

Страница 43: ...4 t l u a f n e g o r d y h a n o p u e d o m n o i t a l i t n e v k c a b d e e f s i h T C A V H d e t c e n n o c e h t m o r f g n i r o t i n o m s u t a t s r e z i m o n o c e r o f d e s u e...

Страница 44: ...omizer Equipped models only To check the system operation under different ambient conditions the air temperature and enthalpy sensors must be tricked When outdoor ambient condi tions are higher than t...

Страница 45: ...ays please exercise caution and good judgement when servicing the unit Use only safe and proven service techniques Use refrigeration goggles when servicing the refrigeration circuit WARNING The refrig...

Страница 46: ...iction 2 Obstruction or leak in condensate pan 2 Check pan for leak or blockage 3 Unit is not level 3 Level unit F No space heating or reduced heating units equipped with resistance ele ments 1 Defect...

Страница 47: ...rcuit 1 LP 2 Low Pressure Lockout Compressor Circuit 2 HP 1 High Pressure Lockout Compressor Circuit 1 HP 2 High Pressure Lockout Compressor Circuit 2 03 Low Voltage Brownout 16VAC or Less for 10 Minu...

Страница 48: ...before restarting Condenser Periodicallyinspecttheoutdoorcondensercoilandthecabinetairreliefsfordirtorobstructions Remove foreign objects such as leaves paper etc If the condenser coil is dirty it ma...

Страница 49: ...or any other 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 Da...

Страница 50: ...__________________________ Compressor Model No ______________________________________________ Serial No ______________________________________________ B Pre Start Up Is there any shipping damage Yes N...

Страница 51: ...Deviation from avg voltage ______________volts Voltage imbalance 100 x Max Deviation avg Voltage ___________ A voltage deviation greater than 2 with the unit running should be addressed and corrected...

Страница 52: ...ir DB Temp ________ ________ Evap Leaving Air WB Temp ________ ________ Heater Contactor Amps L1 ________ ________ Heater Contactor Amps L2 ________ ________ Heater Contactor Amps L3 ________ ________...

Страница 53: ...__ Compressor Amps L3 ________ ________ Notes _________________________________________________________________________ _________________________________________________________________________ ______...

Страница 54: ...the supply outlet duct flange on the unit The 1 25 4 mm clearance must extend on all sides of the supply duct for the first 3 feet 1 meter from the unit IMPORTANT Marvair requires a minimum of 1 25 4...

Страница 55: ...ters 6 Install the two No 10 screws in the heater assembly plate 7 Install wire harness in hole provided in drain pan and then through filter bracket and then into control box 8 Wire the heater as sho...

Страница 56: ...56 Marvair MAA MGA Wall Mount AC Installation Operation Manual 05 2023 Rev 21...

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