42
Using the Keypad with Settings and Parameters
To use the keypad when working with Setpoints, System
and Advanced Settings, Checkout tests and Alarms:
1. Navigate to the desired menu.
2. Press the
(Enter) button to display the first item in
the currently displayed menu.
3. Use the
and
buttons to scroll to the desired pa-
rameter.
4. Press the
(Enter) button to display the value of the
currently displayed item.
5. Press the
button to increase (change) the displayed
parameter value.
6. Press the
button to decrease (change) the displayed
parameter value.
NOTE
: When values are displayed, pressing and
holding the
or
button causes the
display to automatically increment.
7. Press the
(Enter) button to accept the displayed
value and store it in nonvolatile RAM.
8. “CHANGE STORED” displays.
9. Press the
(Enter) button to return to the current
menu parameter.
10. Press the
(Menu Up/Exit) button to return to the
previous menu.
Menu Structure
IMPORTANT
: Table 9 illustrates the complete hierarchy.
Your menu parameters may be different depending on
your configuration. For example if you do not have a
DCV (CO
2
) sensor, then none of the DCV parameters
appear.
The menu hierarchy has been modified to reflect controller
configuration for 2--speed indoor fan application in the
Staged Air Volume option.
NOTE
: Some parameters in the menus use the letters MA
or MAT, indicating a mixed air temperature sensor location
before the cooling coil. This unit application has the control
sensor located after the cooling coil, in the fan section,
where it is designated as (Cooling) Supply Air Temperature
or SAT sensor.
Table 9 – Menu Structure*
Menu
Parameter
Parameter
Default
Value
Parameter
Range and Increment
{
EXPANDED PARAMETER NAME
Notes
STATUS
ECON AVAIL
NO
YES/NO
ECONOMIZING AVAILABLE
YES = economizing available; the system can use outside air for free
cooling when required
ECONOMIZING
NO
YES/NO
ECONOMIZING ACTIVE
YES = Outside air being used for Cooling Stage 1.
NO = Economizing not active
OCCUPIED
NO
YES/NO
OCCUPIED
YES = OCC signal received from space thermostat
or unitary controller.
YES = 24 Vac on terminal OCC.
NO = 0 Vac on terminal OCC.
HEAT PUMP
n/a**
COOL
HEAT
HEAT PUMP MODE
(Not available on 2---Speed configuration)
COOL Y1---IN
OFF
ON/OFF
FIRST STAGE COOLING DEMAND (Y1---IN)
Y1---I signal from space thermostat or unitary controller for Cooling Stage 1.
ON = 24 Vac on terminal Y1---I
OFF = 0 Vac on terminal Y1---I
COOL Y1---OUT
OFF
ON/OFF
FIRST STAGE COOLING RELAY OUTPUT
ON = 24 Vac on terminal Y1---O; Stage 1 mechanical cooling called on
OFF = 0 Vac on terminal Y1---O; no mechanical cooling
COOL Y2---IN
OFF
ON/OFF
SECOND STAVE COOLING DEMAND (Y2---IN)
Y2---I signal from space thermostat or unitary controller for Cooling Stage 2.
ON = 24 Vac on terminal Y2---I
OFF = 0 Vac on terminal Y2---I
COOL Y2---OUT
OFF
ON/OFF
SECOND STAGE COOLING RELAY OUTPUT
ON = 24 Vac on terminal Y2---O; Stage 2 mechanical cooling called on
OFF = 0 Vac on terminal Y2---O; no Stage 2 mechanical cooling
MA TEMP
nn
_
F (or
_
C) 0 to 140
_
F
(---18 to 60
_
C)
SUPPLY AIR TEMPERATURE, Cooling Mode
Displays value of measured mixed/cooled air from SAT sensor in fan
section.
Displays --- ---.--- if not connected, short or out---of---range. See Menu Note 2
DA TEMP
nn
_
F (or
_
C) 0 to 140
_
F
(---18 to 60
_
C)
DISCHARGE AIR TEMPERATURE, after Heating section
(Accessory sensor required)
Displays when Discharge Air sensor is connected and displays measured
discharge temperature.
Displays --- --- --- --- --- --- if sensor sends invalid value, if not connected, short
or out---of---range.
OA TEMP
nn
_
F (or
_
C)
---40 to 140
_
F
(---40 to 60
_
C)
OUTSIDE AIR TEMPERATURE
Displays measured value of outdoor air temperature.
Displays --- --- --- --- --- --- if sensor sends invalid value, if not connected, short
or out---of---range.
OA HUM
nn%
0 to 100%
OUTSIDE AIR RELATIVE HUMIDITY
Displays measured value of outdoor humidity from OA enthalpy sensor.
RA TEMP
nn
_
F (or
_
C) 0 to 140
_
F
(---18 to 60
_
C)
RETURN AIR TEMPERATURE
(Accessory sensor required)
Displays measured value of return air temperature from RAT sensor.
Summary of Contents for WeatherExpert 48LC
Page 5: ...5 C13057 Fig 2 Unit Dimensional Drawing 14 Size Unit Sheet 1 of 3 ...
Page 6: ...6 C13058 Fig 2 cont Unit Dimensional Drawing 14 Size Unit Sheet 2 of 3 ...
Page 7: ...7 C13059 Fig 2 cont Unit Dimensional Drawing 14 Size Unit Sheet 3 of 3 ...
Page 8: ...8 C13032 Fig 3 Unit Dimensional Drawing 17 and 20 Size Units Sheet 1 of 3 ...
Page 9: ...9 C13033 Fig 3 cont Unit Dimensional Drawing 17 and 20 Size Units Sheet 2 of 3 ...
Page 10: ...10 C13034 Fig 3 cont Unit Dimensional Drawing 17 and 20 Size Units Sheet 3 of 3 ...
Page 11: ...11 C14106 Fig 4 Unit Dimensional Drawing 24 and 26 Size Units Sheet 1 of 3 ...
Page 12: ...12 C14107 Fig 4 cont Unit Dimensional Drawing 24 and 26 Size Units Sheet 2 of 3 ...
Page 13: ...13 C14108 Fig 4 cont Unit Dimensional Drawing 24 and 26 Size Units Sheet 3 of 3 ...
Page 17: ...17 C13054 Fig 8 Roof Curb Details 14 Size Unit ...
Page 18: ...18 C13055 Fig 9 Roof Curb Details 17 and 20 Size Units ...
Page 19: ...19 C13056 Fig 10 Roof Curb Details 24 and 26 Size Units ...
Page 27: ...27 a48 9336 Fig 26 48LC 14 26 Electro mechanical Control Wiring Diagram ...
Page 28: ...28 a48 9337 Fig 27 48LC 14 26 RTU Open Control Wiring Diagram ...
Page 29: ...29 a48 9338 Fig 28 48LC 14 26 SystemVut Control Wiring Diagram ...
Page 31: ...31 a48 9339 Fig 30 Typical Power Wiring Diagram SystemVut Controls 48LC 26 208 230V Shown ...
Page 58: ...58 a48 9340 Fig 55 Typical EconoMi erR X Wiring Diagram ...