![background image](http://html1.mh-extra.com/html/carrier/48tc-d-e17-series/48tc-d-e17-series_installation-instructions-manual_2561084041.webp)
41
LEGEND
* Table 12 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 Occupancy 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 sen-
sor 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
enthalpy 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
For damper minimum position settings and readings on the check-
out menus, see Table 13. For 1 speed fan dry bulb and enthalpy
operation (with and without DCV), see Tables 14-17. For 2 speed
fan dry bulb and enthalpy operation (with and without DCV), see
Table 13 — Damper Minimum Position Settings and Readings on Checkout Menu
ALARMS
(cont)
SHUTDOWN ACTIVE
N/A
N/A
AUX2 IN is programmed for SHUTDOWN and 24 V has been
applied to AUX 2IN 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-O is set to SYS and there is any alarm (e.g., failed
sensors, etc.), the AUX1-O 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.
Table 12 — Menu Structure (cont)
MENU
PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT
NOTES
CLO —
Compressor Lockout
DCV —
Demand Controlled Ventilation
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
DEMAND CONTROLLED
VENTILATION
(CO2 SENSOR)
FAN SPEED
SETPOINTS
CHECKOUT
NO
1
MIN POS
VMAX–HS
N/A
N/A
2
MIN POS H
VMAX–HS
MIN POS L
VMAX–LS
YES
1
VENT MIN
VMAX–HS
VENT MAX
VMAX–HS
2
VENT MIN H
VMAX–HS
VENT MAX H
VMAX–LS
VENT MIN L
N/A
VENT MAX L
N/A
Summary of Contents for 48TC D/E17 Series
Page 5: ...5 Fig 2 48TC 17 20 Vertical Airflow...
Page 6: ...6 Fig 3 48TC 17 20 Back View and Condensate Drain Location...
Page 7: ...7 Fig 4 48TC 17 20 Corner Weights and Clearances...
Page 8: ...8 Fig 5 48TC 17 20 Bottom View...
Page 9: ...9 Fig 6 48TC 24 28 Vertical Airflow...
Page 10: ...10 Fig 7 48TC 24 28 Back View and Condensate Drain Location...
Page 11: ...11 Fig 8 48TC 24 28 Corner Weights and Clearances...
Page 12: ...12 Fig 9 48TC 24 28 Bottom View...
Page 13: ...13 Fig 10 48TC 30 Vertical Airflow...
Page 14: ...14 Fig 11 48TC 30 Back View and Condensate Drain Location...
Page 15: ...15 Fig 12 48TC 30 Corner Weights and Clearances...
Page 16: ...16 Fig 13 48TC 30 Bottom View...
Page 19: ...19 Fig 16 Roof Curb Details 17 and 20 Size Units...
Page 20: ...20 Fig 17 Roof Curb Details 24 and 28 Size Units...
Page 21: ...21 Fig 18 Roof Curb Details 30 Size Units...
Page 47: ...47 Fig 52 PremierLink Wiring Diagram...
Page 48: ...48 Fig 53 PremierLink Wiring Diagram with Humidi MiZer System...
Page 49: ...49 Fig 54 Typical RTU Open System Control Wiring Diagram...
Page 50: ...50 Fig 55 Typical RTU Open System Control Wiring Diagram with Humidi MiZer System...
Page 51: ...51 Fig 56 48TC 17 30 Control Wiring Diagram...
Page 52: ...52 Fig 57 48TC 17 30 Power Wiring Diagram 208 230 3 60...
Page 53: ...53 Fig 58 48TC 17 30 Power Wiring Diagram 460 3 60...
Page 54: ...54 Fig 59 48TC 17 30 Power Wiring Diagram 575 3 60...
Page 55: ...55 Fig 60 48TC 17 30 Control Wiring Diagram with Humidi MiZer System...
Page 56: ...56 Fig 61 48TC 17 30 Power Wiring Diagram with Humidi MiZer System 208 230 3 60...
Page 57: ...57 Fig 62 48TC 17 30 Power Wiring Diagram with Humidi MiZer System 460 3 60...
Page 58: ...58 Fig 63 48TC 17 30 Power Wiring Diagram with Humidi MiZer System 575 3 60...