Trane TAM7A0A24H21SC - Page 39

18-GJ06D2-2A
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• Set the S2–1 and S2–2 dip switches for the Cooling
and Heating CFM/Ton.
INDOOR MODEL S2–1 S2–2
COOLING
CFM/TON
HEATING
CFM/TON
TAM7A0A24H21SC
OFF OFF 400 430
OFF ON 360 390
ON OFF 380 410
ON ON 420 450
TAM7A0B30H21SC
OFF OFF 400 430
OFF ON 360 390
ON OFF 380 410
ON ON 420 450
TAM7A0C36H31SC
OFF OFF 370 420
OFF ON 350 400
ON OFF 390 440
ON ON 410 450
TAM7A0C42H31SC
OFF OFF 370 400
OFF ON 330 360
ON OFF 350 380
ON ON 390 420
TAM7A0C48H41SC
OFF OFF 350 400
OFF ON 330 380
ON OFF 370 420
ON ON 390 440
TAM7B0C60H51SB
OFF OFF 370 400
OFF ON 380 410
ON OFF 390 420
ON ON 400 430
• Set the S2–3 and S2–4 dip switches for the Blower
Off and Delay.
BLOWER OFF DELAY S2–3 S2–4
1.5M @ 100%
OFF OFF
NO DELAY OFF ON
3M @ 50%
ON OFF
ENHANCED ON ON
IInnddoooorr BBlloowweerr TTiimmiinngg
This ENHANCED MODE selection provides a ramping
up and ramping down of the blower speed to provide
improved comfort, quietness, and potential energy
savings. The graph on the right shows the ramping
process. Enhanced Mode works in cooling, HP, heating,
Torque, and constant CFM modes.
• Set the S2–5 dip switch for the airflow mode.
AIRFLOW MODE S2–5
*TORQUE
OFF
CONSTANT CFM ON
1
1
1 2 3 4 5
1 2 3 4 5
HP
2 (Comp res sor)
2 (Stag es )
AC (Sys tem)
}
OUTDOOR
Capa city (Tons )
OUTDOOR
}
Torque
CFM/Ton
Coo l Off Delay
}
INDOOR
CFM
+12V
R13
R14
R1
R4
C1
U1
R NET 1
S1
on
on
S2
R NET 2
R
6
C22
C19
C
1
5
C
1
2
C1
8
C21
C10
D9
L
1
R22
S 2
Airflow Control (AFC)
OFF OFF
50%
80%
100% if necessary
50%
Dehumidify
Fast Coil Cooling
Efficiency
7.5
minutes
3
minutes
1
minute
FAN OPERATION (CFM)
OFF
CCOMPRESSO R OPERATION
as required
• All zoning applications MUST be set to Constant
CFM mode.
• Torque mode is optional and is recommended for
high static applications. High static conditions
dramatically increase energy consumption with
variable speed motors. Evaluate the blower
performance table in relationship to the duct
system to determine the benefit of each installation.
• For the 2 ton air handler, torque mode will reduce
airflow when static is above approximately 0.3”
water column.
• For the 2–1/2, 3, and 3–1/2 ton air handlers, torque
mode will reduce airflow when static is above
approximately 0.35" water column.
• For the 4 and 5 ton air handlers, torque mode will
reduce airflow when static is above approximately
0.4” water column.
When selected, Torque Mode is used for cooling
operation only.
All heating modes default to constant CFM.
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