Carrier 50HCQD07, Руководство по установке

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Table 10 — Menu Structure* (cont)
LEGEND
* Table 10 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
fan operation at CTB terminal G. This signal passes through the
Central Terminal Board
’ s OCCUPIED jumper JMP1 to the
ECONO connector and to the W7220 ’ s OCC input terminal. An
external timeclock or relay is re q uired 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 SPEED = 2SPEED
For damper minimum position settings and checkout menu
readings, see Table 11. See Tables 12-19 for dry bulb and en-
thalpy sequence of operation.
Table 11 — Damper Minimum Position Settings and Readings on Checkout Menu
MENU PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT
†
NOTES
ALARMS
(CONT)
SHUTDOWN ACTIVE N/A N/A AUX2 IN is programmed for SHUTDOWN and 24 V has been applied to AUX2
IN terminal.
DMP CAL RUNNING N/A N/A DAMPER CALIBRATION ROUTINE RUNNING
If DCV Auto enable has been programmed, when the W7220 is completing a
calibration on the dampers, this alarm will display. Wait until the calibration is
completed and the alarm will go away. Must have OA, MA and RA sensors for
DCV calibration; set up in the Advanced setup menu.
DA SENS ALM N/A N/A DISCHARGE AIR TEMPERATURE SENSOR ALARM
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 AUX1-0 is set to SYS and there is any alarm (e.g., failed sensors, etc.),
the AUX1-0 terminal has 24 Vac out.
ACT UNDER V N/A N/A ACTUATOR VOLTAGE LOW
Voltage received by actuator is above expected range.
ACT OVER V N/A N/A ACTUATOR VOLTAGE HIGH
Voltage received by actuator is below expected range.
ACT STALLED N/A N/A ACTUATOR STALLED
Actuator stopped before achieving commanded position.
CLO — Compressor Lockout
ERV — Energy Recovery Ventilator
LCD — Li q uid 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
FAN SPEED
DEMAND CONTROLLED VENTILATION
(CO
2
SENSOR)
SETPOINTS CHECKOUT
1 NO MIN POS VMAX – HS
1 NO N/A N/A
2 NO MIN POS H VMAX – HS
2 NO MIN POS L VMAX – LS
1 YES VENT MIN VMIN – HS
1 YES VENT MAX VMAX – HS
2 YES VENT MIN H VMIN – HS
2 YES VENT MAX H VMAX – LS
2 YES VENT MIN L N/A
2 YES VENT MAX L N/A