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Table 7 —
W7220 Menu Structure* (cont)
MENU
PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT
†
NOTES
SYSTEM SETUP
INSTALL
01/01/10
N/A
Display order = MM/DD/YY
Setting order = DD, MM, then YY
UNITS DEG
°F
°F or °C
Sets economizer controller in degrees Fahrenheit or Celsius
EQUIPMENT
CONV
Conventional or HP
CONV = conventional;
HP O/B = Enable Heat Pump mode. Not available with 2-speed.
See Note 4.
AUX2 I
W
W required for 2-
speed mode
W = Informs controller that system is in heating mode.
SD = Enables configuration of shutdown (not available on 2-speed).
See Note 4.
FAN TYPE
2 speed
2 speed required
Sets the economizer controller for operation of 1 speed or 2 speed sin-
door fan system. See Note 4.
FAN CFM
5000cfm
100 to 15000 cfm;
increment by 100
UNIT DESIGN AIRFLOW (CFM)
Enter only if using DCVAL ENA = AUTO
The value is found Project Submittal documents for the specific unit.
AUX OUT
NONE
NONE
EXH2
SYS
Select OUTPUT for AUX1 O relay
• NONE = not configured (output is not used)
• EXH2 = second damper position relay closure for second exhaust fan
• SYS = use output as an alarm signal
OCC
INPUT
INPUT or ALWAYS
OCCUPIED MODE BY EXTERNAL SIGNAL
When using a setback thermostat with occupancy out (24 vac), the 24 vac
is input to the OCC terminal. RTU control circuit provides 24-Vac to OCC
through OCCUPIED terminals on Integrated Staging Control Board.
FACTORY DEFAULT
NO
NO or YES
Resets all set points to factory defaults when set to YES. LCD will briefly
flash YES and change to NO but all parameters will change to the factory
default values.
NOTE: RECHECK AUX2 IN and FANTYPE for required 2-speed values.
ADVANCED
SETUP
MA LO SET
45
°
F
(7°C)
35 to 55
°
F
(2 to 12°C);
Incremented by 1
°
SUPPLY AIR TEMPERATURE LOW LIMIT
Temperature to achieve Freeze Protection (close damper and alarm if
temperature falls below setup value).
FREEZE POS
CLO
CLO or MIN
FREEZE PROTECTION DAMPER POSITION
Damper position when freeze protection is active.
CLO = closed
MIN = MIN POS or VENT MAX
CO2 ZERO
0ppm
0 to 500 ppm;
Increment by 10
CO
2
ppm level to match CO
2
sensor start level.
CO2 SPAN
2000ppm
1000 to 3000 ppm;
Increment by 50
CO
2
ppm span to match CO
2
sensor.
STG3 DLY
2.0h
0 min, 5 min, 15 min,
then 15 min intervals.
Up to 4 hrs or OFF
COOLING STAGE 3 DELAY
Delay after stage 2 cool has been active. Turns on second stage of cool-
ing when economizer is first stage and mechanical cooling is second
stage.
SD DMPR POS
CLO
CLO or OPN
Function not available with 2-speed mode.
DCVCAL ENA
MAN
MAN (manual)
Turns on the DCV automatic control of the dampers. Resets ventilation.
MAT T CAL
0.0
°
F (or C)
±2.5°F (±1.4°C)
SUPPLY AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration supply air tem-
perature (SAT) sensor.
OA T CAL
1.0
°
F (or C)
±2.5°F (±1.4°C)
OUTSIDE AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration outside aire tem-
perature (OAT) sensor.
OA H CAL
0% RH
±10% RH
OUTSIDE AIR HUMIDITY CALIBRATION
Allows for operator to adjust for an out of calibration enthalpy sensor.
RA T CAL
2.0
°
F (or C)
±2.5°F (±1.4°C)
RETURN AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration return air tem-
perature (RAT) sensor.
RA H CAL
0% RH
±10% RH
RETURN AIR HUMIDITY CALIBRATION
Allows for operator to adjust for an out of calibration return air enthalpy
sensor.
DA T CAL
0.0
°
F (or C)
±2.5°F (±1.4°C)
DISCHARGE AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration discharge air
(DAT) temperature sensor.
2SP FAN DELAY
5 Minutes
0 to 20 minutes in 1
minute increments
TIME DELAY ON 2nd STAGE ECONOMIZING
When in economizing mode, this is the delay between thermostat Y2
call and Y1-O output to mechanical cooling stage, to allow high speed fan
operation to attempt to cool space first.
Summary of Contents for WeatherExpert 50LC14
Page 4: ...4 Fig 2 50LC Vertical Airflow Size 14...
Page 5: ...5 Fig 3 50LC Horizontal Airflow Size 14...
Page 6: ...6 Fig 4 50LC Back View and Condensate Drain Location Size 14...
Page 7: ...7 Fig 5 50LC Corner Weights and Clearances Size 14...
Page 8: ...8 Fig 6 50LC Bottom View Size 14...
Page 9: ...9 Fig 7 50LC Vertical Airflow Sizes 17 20...
Page 10: ...10 Fig 8 50LC Horizontal Airflow Sizes 17 20...
Page 11: ...11 Fig 9 50LC Back View and Condensate Drain Location Sizes 17 20...
Page 12: ...12 Fig 10 50LC Corner Weights and Clearances Sizes 17 20...
Page 13: ...13 Fig 11 50LC Bottom View Sizes 17 20...
Page 14: ...14 Fig 12 50LC Vertical Airflow Sizes 24 26...
Page 15: ...15 Fig 13 50LC Horizontal Airflow Sizes 24 26...
Page 16: ...16 Fig 14 50LC Back View and Condensate Drain Location Sizes 24 26...
Page 17: ...17 Fig 15 50LC Corner Weights and Clearances Sizes 24 26...
Page 18: ...18 Fig 16 50LC Bottom View Sizes 24 26...
Page 21: ...21 Fig 19 Roof Curb Details 14 Size Unit...
Page 22: ...22 Fig 20 Roof Curb Details 17 and 20 Size Units...
Page 23: ...23 Fig 21 Roof Curb Details 24 and 26 Size Units...
Page 30: ...30 Fig 42 50LC 14 26 Electro Mechanical Control Wiring Diagram...
Page 31: ...31 Fig 43 50LC 14 26 RTU Open Control Wiring Diagram...
Page 32: ...32 Fig 44 50LC 14 26 SystemVu Control Wiring Diagram...
Page 35: ...35 Fig 47 Typical Power Wiring Diagram SystemVu Controls 50LC Unit 208 230V Shown...
Page 36: ...36 Fig 48 Typical Power Wiring Diagram SystemVu Controls 50LC Unit 460V 575V Shown...
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Page 81: ......