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40
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
Summary of Contents for 50HCQD07
Page 4: ...4 Fig 2 Unit Dimensional Drawing 07 08 Size Units ...
Page 5: ...5 Fig 2 Unit Dimensional Drawing 07 08 Size Units cont ...
Page 6: ...6 Fig 3 Unit Dimensional Drawing 09 Size Units ...
Page 7: ...7 Fig 3 Unit Dimensional Drawing 09 Size Units cont ...
Page 24: ...24 Fig 37 Electro Mechanical Control Wiring 50HCQ A07 D07 208 230v 460v 575v ...
Page 25: ...25 Fig 38 Electro Mechanical Control Wiring 50HCQ D07 Tier 2 1 Compressor 208 230v 460v 575v ...
Page 26: ...26 Fig 39 Electro Mechanical Control Wiring 50HCQ 08 09 208 230v 460v 575v ...
Page 27: ...27 Fig 40 Electro Mechanical Power Wiring 50HCQ A07 D07 208 230v 460v 575v ...
Page 28: ...28 Fig 41 Electro Mechanical Power Wiring 50HCQ D07 Tier 2 1 Compressor 208 230v 460v 575v ...
Page 29: ...29 Fig 42 Electro Mechanical Power Wiring 50HCQ 08 09 208 230v 460v 575v ...
Page 30: ...30 Fig 43 PremierLink Wiring Schematic 50HCQ07 09 208 230v 460v 575v ...
Page 31: ...31 Fig 44 RTU Open System Control Wiring ...
Page 49: ......