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Marvair MAA/MGA Wall Mount AC Installation & Operation Manual
12/2021 Rev.16
D. Heating Mode Check & Record Readings
Circuit 1 Circuit 2
(if applicable)
Room Temperature ________ ________
Outside Temperature ________ ________
Evap. Entering Air DB Temp ________ ________
Evap. Entering Air WB Temp ________ ________
Evap. Leaving Air DB Temp ________ ________
Evap. Leaving Air WB Temp ________ ________
Heater Contactor Amps (L1) ________ ________
Heater Contactor Amps (L2) ________ ________
Heater Contactor Amps (L3) ________ ________
E. Cooling Mode Check & Record Refrigerant Pressures
Recheck voltage imbalance in cooling mode:
Measured Line to Line Volts L1&L2_______V. L1&L3 ________V. L2&L3______V.
(L1&L2 + L1&L3 + L2&L3)/3 = Avg. Voltage = _______________
Max. Deviation from avg. voltage = ______________volts
Voltage imbalance = (100 x Max. Deviation)/avg. Voltage = ___________%
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