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65
Menu 3: Setpoints
PARAMETER
PROJECT
VALUE
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT
NOTES
MAT SET
53°F (12°C)
38 to 65°F (3 to 18°C);
increment by 1°
SUPPLY AIR SETPOINT
Setpoint determines where the economizer will modulate the OA
damper to maintain the supply air temperature.
See Table 7 on page 48, Menu Note 2.
LOW T LOCK
32°F (0°C)
-45 to 80°F
(-43 to 27°C);
increment by 1°
COMPRESSOR LOW TEMPERATURE LOCKOUT
Setpoint determines outdoor temperature when the mechanical
cooling cannot be turned on.
DRYBLB SET
63°F (17°C)
48 to 80°F (9 to 27°C);
increment by 1°
OA DRY BULB TEMPERATURE CHANGEOVER SETPOINT
Setpoint determines where the economizer will assume outdoor
air temperature is good for free cooling; e.g.: at 63°F (17°C), unit
will economize at 62°F (16.7°C) and below and not economize at
64°F (17.8°C) and above. There is a 2°F (1.1°C) deadband.
See Table 7 on page 48, Menu Note 3.
ENTH CURVE
ES3
ES1, ES2, ES3, ES4,
or ES5
ENTHALPY CHANGEOVER CURVE
(Requires enthalpy sensor option)
Enthalpy boundary “curves” for economizing using single
enthalpy
DCV SET
1100ppm
500 to 2000 ppm;
increment by 100
DEMAND CONTROLLED VENTILATION SETPOINT
Displays only if CO
2
sensor is connected. Setpoint for Demand
Controlled Ventilation of space. Above the setpoint, the OA
dampers will modulate open to bring in additional OA to maintain
a space ppm level below the setpoint.
MIN POS L
6.0 V
2 to 10 Vdc
VENTILATION MINIMUM POSITION AT LOW SPEED
Displays ONLY if a CO
2
sensor is NOT connected.
MIN POS H
4.4 V
2 to 10 Vdc
VENTILATION MINIMUM POSITION AT HIGH SPEED
Displays ONLY if a CO
2
sensor is NOT connected.
VENTMAX L
6.0 V
2 to 10 Vdc
DCV MAXIMUM DAMPER POSITION AT LOW SPEED
(Requires CO
2
sensor connected)
VENTMAX H
4.4 V
2 to 10 Vdc
DCV MAXIMUM DAMPER POSITION AT HIGH SPEED
(Requires CO
2
sensor connected)
VENTMIN L
3.7 V
2 to 10 Vdc
DCV MINIMUM DAMPER POSITION AT LOW SPEED
(Requires CO
2
sensor connected)
VENTMIN H
2.8 V
2 to 10 Vdc
DCV MINIMUM DAMPER POSITION AT HIGH SPEED
(Requires CO
2
sensor connected)
ERV OAT SP
32°F (0°C)
0 to 50°F
(-18 to 10°C);
increment by 1°
ENERGY RECOVERY VENTILATION UNIT OUTDOOR AIR
TEMPERATURE SETPOINT
Only when AUX1 O = ERV
EXH1 L SET
65%
0 to 100%;
increment by 1
EXHAUST FAN STAGE 1 SETPOINT AT LOW SPEED
Setpoint for OA damper position when exhaust fan1 is powered
by the economizer.
EXH1 H SET
50%
0 to 100%;
increment by 1
EXHAUST FAN STAGE 1 SETPOINT AT HIGH SPEED
Setpoint for OA damper position when exhaust fan1 is powered
by the economizer.
EXH2 L SET
80%
0 to 100%;
increment by 1
EXHAUST FAN STAGE 2 SETPOINT AT LOW SPEED
Setpoint for OA damper position when exhaust fan 2 is powered
by the economizer.
Only used when AUX1-O is set to EHX2.
EXH2H SET
75%
0 to 100%;
increment by 1
EXHAUST FAN STAGE 2 SETPOINT AT HIGH SPEED
Setpoint for OA damper position when exhaust fan 2 is powered
by the economizer.
Only used when AUX1-O is set to EHX2.
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: ......