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51
Table 7 —
W7220 Menu Structure* (cont)
LEGEND
* Table 7 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.
† When values are displayed, pressing and holding the or button
causes the display to automatically increment.
** N/A = Not Applicable.
†† ERV Operation: When in Cooling mode AND the conditions are NOT
OK for economizing, the ERV terminal will be energized. In the Heat
-
ing mode the ERV terminal will be energized when the OA is below
the ERV OAT setpoint in the setpoint menu.
NOTES:
1.
STATUS —> OCCUPIED — The factory-standard Occupancy sig
-
nal originates with a thermostat or other controller call for indoor
operation at ISC terminal G. This signal passes through the Inte-
grated Staging Control Board’s OCCUPIED jumper JMP1 to the
ECONO connector and to the W7220’s OCC input terminal. An
external timeclock or relay is required to implement an Occu-
pancy schedule on the economizer damper position.
2.
STATUS —> MA TEMP, SETPOINTS —> MAT SET — The W7220
menu parameters and labels include designations MA , MAT and
Mixed Air for the economizer cooling control sensor. On these roof-
top units, the economizer control sensor is located downstream of
the evaporator/indoor coil in the supply fan section where this sensor
is designated as Supply Air Temperature (SAT) sensor.
3.
SETPOINTS —> DRYBLB SET — This point is not displayed if a
Return Air (differential) temperature sensor or an Outdoor Air enthal-
py sensor is connected.
4. SYSTEM SETUP parameters must be configured as noted for 2-
Speed unit operation:
EQUIPMENT = CONV
AUX2 I = W
FAN TYPE = 2SPEED
W7220 ECONOMIZER MODULE WIRING
Use Fig. 69 and Tables 8 and 9 to locate the wiring terminals for
the Economizer module. See Fig. 70 and 71 for sensor and con
-
trols connections.
MENU
PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT
†
NOTES
CHECKOUT
DAMPER VMIN .HS
N/A
N/A
Positions OA damper to VMIN High Speed position.
DAMPER VMAX .HS
N/A
N/A
Positions OA damper to VMAX High Speed position.
DAMPER OPEN
N/A
N/A
Position damper to the full open position.
DAMPER CLOSE
N/A
N/A
Positions damper to the fully closed position
CONNECT
Y1–O
N/A
N/A
Closes the Y1-O relay (Y1-O)
CONNECT
Y2–O
N/A
N/A
Closes the Y2-O relay (Y2-O)
CONNECT AUX1O
N/A
N/A
Energizes the AUX1O output. If Aux setting is:
•
NONE — not action taken
•
ER
V — 24
Vac out. Turns on or signals an ERV that the conditions are
not good for economizing but are for ERV operation.
††
•
SYS — 24
Vac out. Issues a system alarm.
CONNECT EXH1
N/A
N/A
Closes the power exhaust fan 2 relay (EXH1)
ALARMS
Alarms display only when they are active. The menu title “ALARMS(#)” includes the number of active alarms in parenthesis ( ).
MA T SENS ERR
N/A
N/A
SUPPLY AIR TEMPERATURE SENSOR ERROR
Mixed air sensor has failed or become disconnected - check wiring then
replace sensor if the alarm continues.
CO2 SENS ERR
N/A
N/A
CO
2
SENSOR ERROR
CO
2
sensor has failed, gone out of range or become disconnected - check
wiring then replace sensor if the alarm continues.
OA T SENS ERR
N/A
N/A
OUTSIDE AIR TEMPERATURE SENSOR ERROR
OAT sensor connected at input terminals OAT. Outdoor air temperature
sensor has failed or become disconnected - check wiring then replace if
the alarm continues.
OA SYLK SENS ERR
N/A
N/A
OUTSIDE AIR TEMPERATURE SENSOR ERROR
OAT sensor connected on S-bus.
RA SYLK T ERR
N/A
N/A
RETURN AIR S-BUS SENSOR ERROR
Return air enthalpy sensor has failed or become disconnected - check
wiring then replace sensor if the alarm continues.
RA SYLK H ERR
N/A
N/A
DA T SENS ERR
N/A
N/A
DISCHARGE AIR TEMPERATURE SENSOR ERROR
Discharge air temperature is out of the range set in the ADVANCED
SETUP Menu. Check the temperature of the discharge air.
SYS ALARM
N/A
N/A
When AUX is set to SYS and there is any alarm (e.g., failed sensors, etc.),
the AUX terminal has 24 Vac out.
ACT UNDER V
N/A
N/A
ACTUATOR VOLTAGE LOW
Voltage received by actuator is below expected range.
ACT OVER V
N/A
N/A
ACTUATOR VOLTAGE HIGH
Voltage received by actuator is above expected range.
ACT STALLED
N/A
N/A
ACTUATOR STALLED
Actuator stopped before reaching commanded position.
ACT
—
ACTUATOR
CLO
—
COMPRESSOR LOCKOUT
DA
—
DISCHARGE AIR
ERV
—
ENERGY RECOVERY VENTILATOR
LCD
—
LIQUID CRYSTAL DISPLAY
MA
—
MIXED AIR
MAT
—
MIXED AIR TEMPERATURE
N/A
—
NOT APPLICABLE
OA
—
OUTDOOR AIR
OAT
—
OUTDOOR AIR TEMPERATURE
OCC
—
OCCUPIED
RA
—
RETURN AIR
RAT
—
RETURN AIR TEMPERATURE
RTU
—
ROOFTOP UNIT
SYS
—
SYSTEM
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...
Page 80: ......
Page 81: ......