Trane TAM7A0A24H21SC Installer's Manual page 39

D D i i p p S S w w i i t t c c h h S S 2 2
• Set the S2–1 and S2–2 dip switches for the Cooling
and Heating CFM/Ton.
INDOOR MODEL S2–1 S2–2
OFF
OFF
TAM7A0A24H21SC
ON
ON
OFF
OFF
TAM7A0B30H21SC
ON
ON
OFF
OFF
TAM7A0C36H31SC
ON
ON
OFF
OFF
TAM7A0C42H31SC
ON
ON
OFF
OFF
TAM7A0C48H41SC
ON
ON
OFF
OFF
TAM7B0C60H51SB
ON
ON
• Set the S2–3 and S2–4 dip switches for the Blower
Off and Delay.
BLOWER OFF DELAY
1.5M @ 100%
NO DELAY
3M @ 50%
ENHANCED
I I n n d d o o o o r r B B l l o o w w e e r r T T i i m m i i n n g g
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
*TORQUE
CONSTANT CFM
18-GJ06D2-2A
COOLING HEATING
CFM/TON CFM/TON
OFF 400 430
ON 360 390
OFF 380 410
ON 420 450
OFF 400 430
ON 360 390
OFF 380 410
ON 420 450
OFF 370 420
ON 350 400
OFF 390 440
ON 410 450
OFF 370 400
ON 330 360
OFF 350 380
ON 390 420
OFF 350 400
ON 330 380
OFF 370 420
ON 390 440
OFF 370 400
ON 380 410
OFF 390 420
ON 400 430
S2–3 S2–4
OFF OFF
OFF ON
ON OFF
ON ON
S2–5
OFF
ON
OUTDOOR OUTDOOR
HP
1
1
R4
S1
C1
R NET 1
R NET 2
R1
U1
Co o l Off De la y
R13
R14
Airflo w Co n tro l (AFC)
80%
Dehumidify
50%
Fast Coil Cooling
OFF
1
7.5
minute
minutes
CCOMPRE SSO R OPERATION
• 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.
D D i i p p S S w w i i t t c c h h e e s s
on
}
Ca p a c ity (To n s )
AC (S ys te m)
2 (S ta g e s )
2 (Co mp re s s o r)
INDOOR
on
CFM/To n
To rq u e
CFM
D9
S2
C10
+12V
R22
S 2
100% if necessary
50%
Efficiency
as required
3
minutes
OFF
OFF
39