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Section 17. Start Up
17.1 System Charge Adjustments
The following combinations should be charged to 8
degrees sub-cooling to maintain ratings.
Indoor Unit Model No. Outdoor Unit Model No.
GAM5B0A18M11SB
GAM5B0A18M11EA
4A6B4018E1
4A6H5018E1
GAM5B0A24M21SB
GAM5B0A24M21EA
4A6B4024E1
4A6H5024E1
GAM5B0B30M21SB
GAM5B0B30M21EA
4A6B4030E1
4A6H5030E1
GAM5B0B36M31SB
GAM5B0B36M31EA
4A6B4036E1
4A6H5036E1
GAM5B0C42M31SB
GAM5B0C42M31EA
4A6B4042E1
4A6H5042E1
GAM5B0C48M41SB
GAM5B0C48M41EA
4A6B4048E1
4A6H5048E1
4A6B4049E1
4A6H5049E1
GAM5B0C60M51SB
GAM5B0C60M51EA
4A6B4060E1
4A6H5060E1
4A6B4061E1
4A6H5061E1
All other non-rated matches must be charged
per the nameplate charging instructions.
The following combinations should be charged to 8
degrees sub-cooling to maintain ratings.
Indoor Unit Model No. Outdoor Unit Model No.
GAM5B0A18M11SB
GAM5B0A18M11EA
4TWB4018E1
4TWR5018E1
GAM5B0A24M21SB
GAM5B0A24M21EA
4TWB4024E1
4TWR5024E1
GAM5B0B30M21SB
GAM5B0B30M21EA
4TWB4030E1
4TWR5030E1
GAM5B0B36M31SB
GAM5B0B36M31EA
4TWB4036E1
4TWR5036E1
GAM5B0C42M31SB
GAM5B0C42M31EA
4TWB4042E1
4TWR5042E1
GAM5B0C48M41SB
GAM5B0C48M41EA
4TWB4048E1
4TWR5048E1
4TWB4049E1
4TWR5049E1
4TWX5049E1
GAM5B0C60M51SB
GAM5B0C60M51EA
4TWB4060E1
4TWR5060E1
4TWB4061E1
4TWR5061E1
4TWX5061E1
All other non-rated matches must be charged
per the nameplate charging instructions.
Section 16. Filters
16.1 Filter Considerations
Filter in
air handler
cabinet
(Upflow
Application)
• A filter must be installed within the system.
• A filter channel is provided in the unit, at the bot-
tom of the Blower/Filter compartment.
• For customer ease of fil ter maintenance, it is
recommended that a properly sized remote filter
grill(s) be installed for units that are difficult to
access. Airflow should not exceed the maximum
rated velocity of the filter being used.
Cabinet Size* A B C
Filter Size 16 x 20 20 x 20 22 x 20
* Cabinet size is indicated by the 7th digit in model number.
Table 16.1 Filter Sizes
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