© 2024 Carrier. All rights reserved.
A Carrier company
Edition Date: 10/24
Catalog No: 37MGHAQ-01SI
Replaces: NEW
37MGHAQ: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
38
Ductless Start-Up Checklist (CONT)
Piping
Leak Check:
System held 500 psig (max. 550psi) for a minimum of 30 minutes using dry nitrogen. YES:______ NO:______
Evacuation Method:
•
Was the Triple Evacuation Method used as outlined in the installation manual? YES:______ NO:______
• Was the Deep Vacuum Method used as outlined in the installation manual? YES:______ NO:_______
• Did the System Hold 500 microns for 1 hour? YES:______ NO:_______
• Does the line set match the diameter of the evaporator connections? YES:______ NO:_______
• For Conventional Fan Coils, does the line set match the outdoor unit size? YES:______ NO:_______
Multi-Zone Piping:
Are the service ports open?
YES:______ NO:_______
Check that the piping is not crossed. Turn on one indoor unit at a time and observe if the EEV is opening on the correct port.
NOTE: ____________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
Performance Check
NOTE:
• T1 - Ambient Space Temperature Sensor
• T2 - IDU Coil Temperature Sensor
• T3 - Outdoor Coil Temperature Sensor
• T4 - Outdoor Ambient Temperature
• Tb - Suction Line Temperature @PMV
• Tp - Discharge Temperature Sensor
• Th - IPM Board Temperature
• LA/Lr - PMV Temperature
Error Codes
Were there any error codes present at start-up? YES:______ NO:______
Comments:
__________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________
PORT LIQUID SIZE SUCTION SIZE LENGTH CHARGE
NOTES:____________________________________
___________________________________________
___________________________________________
___________________________________________
___________________________________________
A
B
C
D
E
F
TOTAL CHARGE:
Adjust the set-point of one indoor unit and allow 10 minutes of continuous operation before recording any values. Once all the values have been
recorded, repeat the process for the remaining indoor unit(s) one at a time. Once complete, all the connected heads should operate.
(Operational data recorded on applicable heads with the wireless remote controller's Point Check function))
UNIT
SET-POINT
MODE T1 T2 T3 T4 Tb Tp Th LA/Lr
A
B
C
D
E
F
Indoor Unit Error Code: Notes:
Outdoor Unit Error Code:
Wall Controller:
24V Interface:
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