Subcooling Adjustment - Trane 5 Series Service Facts

Electric Heating
1. R-W contacts close on the comfort control sending
24VAC to the W terminal on the fan relay. 24VAC is
also sent to EHC to energize the heat relay.
2. R-G contacts close on the comfort control send-
ing 24VAC to the G terminal on the fan relay. (The
combination of 24VAC on terminals W and G on
the fan relay will close the high speed contacts of
the fan relay)
3. WJ contacts on the fan relay close providing an
interlock circuit to allow the electric heat relays to
operate.
The comfort control must be setup to control R-G con-
tacts with a call for electric heat. This closes the
interlock circuit and allows the heat relay circuit to
be energized.

SUBCOOLING ADJUSTMENT

The following combinations should be charged to 8 de-
grees sub-cooling to maintain ratings.
Indoor Unit Model No.
GAM5B0A18M11SB
GAM5B0A18M11EA
GAM5B0A24M21SB
GAM5B0A24M21EA
GAM5B0B30M21SB
GAM5B0B30M21EA
GAM5B0B36M31SB
GAM5B0B36M31EA
GAM5B0C42M31SB
GAM5B0C42M31EA
GAM5B0C48M41SB
GAM5B0C48M41EA
GAM5B0C60M51SB
GAM5B0C60M51EA
All other matches must be charged per the nameplate
charging instructions.
GAM5-SF-1P-EN
SEQUENCE OF OPERATION FOR GAM5 AIR HANDLERS
Outdoor Unit Model No.
4A6B4018E1
4A6H5018E1
4A6B4024E1
4A6H5024E1
4A6B4030E1
4A6H5030E1
4A6B4036E1
4A6H5036E1
4A6B4042E1
4A6H5042E1
4A6B4048E1
4A6H5048E1
4A6B4049E1
4A6H5049E1
4A6B4060E1
4A6H5060E1
4A6B4061E1
4A6H5061E1
The following combinations should be charged to 8 de-
grees sub-cooling to maintain ratings.
Indoor Unit Model No.
GAM5B0A18M11SB
GAM5B0A18M11EA
GAM5B0A24M21SB
GAM5B0A24M21EA
GAM5B0B30M21SB
GAM5B0B30M21EA
GAM5B0B36M31SB
GAM5B0B36M31EA
GAM5B0C42M31SB
GAM5B0C42M31EA
GAM5B0C48M41SB
GAM5B0C48M41EA
GAM5B0C60M51SB
GAM5B0C60M51EA
All other matches must be charged per the nameplate
charging instructions.
16
Outdoor Unit Model No.
4TWB4018E1
4TWR5018E1
4TWB4024E1
4TWR5024E1
4TWB4030E1
4TWR5030E1
4TWB4036E1
4TWR5036E1
4TWB4042E1
4TWR5042E1
4TWB4048E1
4TWR5048E1
4TWB4049E1
4TWR5049E1
4TWX5049E1
4TWB4060E1
4TWR5060E1
4TWB4061E1
4TWR5061E1
4TWX5061E1