Unit Setpoints - Trane SCWM Installation, Operation And Maintenance Manual

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Unit Setpoints

Table 25. Unit setpoints that can be modified in the TD-7
Setpoint Name
Condenser Purge Time
(on units with condenser valves only)
Discharge Air Cooling Setpoint BAS
Discharge Air Cooling Setpoint
Max BAS (reset DAT units only)
Discharge Air Heating
Setpoint BAS (Units with Heat Only)
Discharge Air
Low Temperature Cutout
Duct Static Pressure
Setpoint BAS
Duct Static Pressure Safety Lockout
Dirty Air Filter DP
Occupied Offset
(DAT Reset Units Only)
Occupied Standby Offset
(DAT Reset Units Only)
Space Temperature Setpoint BAS
(DAT Reset by Space Temp Air Units Only)
Return Temperature Setpoint BAS
(DAT Reset by Return Temp Air Units Only)
Water Side Economizer Enable Offset
(Units with Water Side Economizer Only)
Water Side Economizer Sample Time
(Units with Water Side Economizer Only)
To modify any of the setpoints in the table above:
1. Press R R e e p p o o r r t t s s at the bottom of the screen.
2. Press the U U n n i i t t S S e e t t p p o o i i n n t t s s button.
3. On the S S e e t t p p o o i i n n t t report, locate the point in the
menu. Use the arrows to scroll through the report if
needed.
PKG-SVX027C-EN
The amount of time (in minutes) that the compressor will open its condenser
valve during purge mode when the unit is not operating.
Used as the cooling setpoint on fixed setpoint units and on units that reset
their discharge air temperature setpoint as the low value in the reset equation.
This value should be set to the desired temperature needed for startup.
Sets the upper limit in the Reset Equation in Cooling Mode.
This value can be adjusted to the desired maximum setpoint the
discharge air should reach during cooling mode.
Used as the heating setpoint when the unit is in heating mode.
This value should be set to the desired temperature needed for startup.
Value that triggers a diagnostic when the discharge air temperature
is below this value for 10 minutes. This value can be adjusted to the desired
low air temperature, which triggers the diagnostic.
The duct static pressure setpoint is set by the analog value
named duct static pressure setpoint BAS. This value should be
set to the desired pressure needed for startup.
Shuts down the unit if the duct static exceeds this setpoint.
It should be set to the desired pressure needed for startup.
Generates a diagnostic for a dirty air filter when the differential
pressure exceeds the setpoint.
Determines the occupied cooling and heating setpoints when the unit
resets the discharge air temperature off either return or space temperature.
Determines the occupied cooling and heating setpoints when the unit
resets the discharge air temperature off either return or space temperature
and is the occupied standby mode.
Sets the space setpoint when the unit is selected to do discharge air
teset based off the space temperature. This value is used to determine
the occupied heating and cooling temperatures which reset the discharge
air temperature setpoint.
Sets the return setpoint when the unit is selected to do discharge air
reset based off the return temperature. This value is used to determine
the occupied heating and cooling temperatures which reset the discharge
air temperature setpoint.
The temperature that the condenser entering water must be below the
return air temperature before it will enable the economizer.
Time that the controller will sample the water temperature for and compare
it against the return air temperature to determine if the economizer can be
enabled.
Description
4. Use the up and down arrows to change the value,
or press inside the box and type in the desired
setpoint.
5. Press S S a a v v e e . .
C C o o n n t t r r o o l l s s
Factory Default
20 minutes
55° F
65° F
90° F
35° F
1 in(H20)
2 in(H20)
10 in(H20)
2° F
4° F
72° F
72° F
7° F
2 minutes
59

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