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18

Table 6 — 

 Menu Structure (cont)

LEGEND

NOTES:

1. Table 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.

2. When  values  are  displayed,  pressing  and  holding  the 

  or 

button causes the display to automatically increment.

3. N/A = Not Applicable.

4. ERV  Operation:  When  in  cooling  mode AND  the  conditions  are

NOT OK for economizing - the ERV terminal will be energized. In

the  Heating  mode,  the  ERV  terminal  will  be  energized  when  the

OA is below the ERV OAT setpoint in the setpoint menu.

MENU

PARAMETER

PARAMETER 

DEFAULT 

VALUE

PARAMETER RANGE AND 

INCREMENT

NOTES

ALARMS

Alarms display only when they are active. The menu title “ALARMS(#)” includes the number of active alarms in parenthesis ( ). When using SYLK bus 

sensors, “SYLK” will appear on the screen, and when using 20k OA temperature sensors, “SENS T” will appear on the screen

MA T SENS ERR

N/A

N/A

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 has failed, gone out of range or become 

disconnected - check wiring then replace sensor if the 

alarm continues.

OA SYLK T ERR

N/A

N/A

Outdoor air enthalpy sensor has failed or become 

disconnected - check wiring then replace sensor if the 

alarm continues.

OA SYLK H ERR

N/A

N/A

RA SYLK T ERR

N/A

N/A

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 SYLK T ERR

N/A

N/A

Discharge air sensor has failed or become 

disconnected - check wiring then replace sensor if the 

alarm continues.

OA SENS T ERR

N/A

N/A

Outdoor air temperature sensor has failed or become 

disconnected - check wiring then replace if the alarm 

continues.

ACT ERROR

N/A

N/A

Actuator has failed or become disconnected - check for 

stall, over voltage, under voltage and actuator count. 

Replace actuator if damper is movable and supply 

voltage is between 21.6 V and 26.4 V. Check actuator 

count on STATUS menu.

FREEZE ALARM

N/A

N/A

Check if outdoor temperature is below the LOW Temp 

Lockout on setpoint menu. Check if Mixed air 

temperature on STATUS menu is below the Low 

Setpoint on Advanced menu. When conditions are back 

in normal range then the alarm will go away.

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

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 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

Voltage received by actuator is above expected range.

ACT OVER V

N/A

N/A

Voltage received by actuator is below expected range.

ACT STALLED

N/A

N/A

Actuator stopped before achieving commanded 

position.

CLO

— Compressor Lockout

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

Содержание CRECOMZR074A01

Страница 1: ...symbol When you see this symbol on the unit and in instructions or manuals be alert to the potential for personal injury Understand the signal words DANGER WARNING CAUTION and NOTE These words are us...

Страница 2: ...nomizer Table 1 Carrier Usage Chart CARRIER MODEL NUMBER ECONOMI ER X PART NUMBER 48 50TC 17 24 CRECOMZR074A00 48 50HC 17 20 48 50LC 14 48 50TCQ 17 24 48 50TC 28 30 CRECOMZR075A00 48 50HC 24 28 48 50L...

Страница 3: ...with shroud attached as shown in Fig 3 into the return air section of the unit Be careful not to pinch the wires during installation The bottom of the economizer will rest on the base of the unit See...

Страница 4: ...crew panel into economizer in two places See Fig 9 Fig 9 End View of Unit 11 Locate the mixed supply air temperature sensor HH79AH001 in the economizer hardware bag A 2 wire sensor harness with spade...

Страница 5: ...Item 1 so that central retainer is perpendicular to hood and each filter support Secure using screws provided i Apply seal strip to top diverters Item 7 j Secure top diverters Item 7 to hood top Item...

Страница 6: ...conomizer shroud flange Screw through the corner post and through the economizer shroud See Fig 5 and 6 7 Insert provided screw through the bottom left rear of the economizer and into the unit base Se...

Страница 7: ...tical applications Reinstall the hinges and damper on the side of the field supplied return duct See page 8 NOTE A relief hood for the horizontal application can be ordered separately part number CRBA...

Страница 8: ...CRBARHOD001A00 hood sides and top together See Fig 25 Caulk the backside of the mating flanges to ensure a watertight seal Install the CRBARHOD001A00 over the relief damper and screw to the return du...

Страница 9: ...d with economizer accessory 7 Inside the control box the brown and orange wires with male terminals from the 50HEHMRAE A10 harness connect to the female terminals on the pink and violet wires from the...

Страница 10: ...10 Fig 28 Typical EconoMi er X Wiring Diagram for 1 and 2 Speed Units...

Страница 11: ...3 Speed Unit Instructions for Complete Diagram NOTES 1 Wires shown in bold are part of 48LCHSRADH A00 harness which is provided with 48 50LC 14 26 size with 3 speed units 2 Harness 50HEHMRAEH A00 whic...

Страница 12: ...8LCHSRADH A00 Harness for 3 Speed Units 48 50LC 14 26 Provided with 3 Speed Units Field Attached to W7220 Controller FIELD ATTACH TO W7220 CONTROLLER CONNECT TO UNIT TERMINAL BOARD CONNECT TO UNIT TER...

Страница 13: ...on to display the first item in the currently displayed menu Press the Menu Up Exit button to exit a menu s item and return to the list of menus USING THE KEYPAD WITH SETTINGS AND PARAMETERS To use th...

Страница 14: ...d the setting under SYSTEM SETUP FAN TYPE must be changed to 1 speed ROOF TOP UNIT Y1O Y2O Y1I Y2I OCC 24 VAC E GND Y1 G W2 W1 Y2 O B OCC W7220 ECONOMIZER CONTROLLER MODULE THERMOSTAT CO2 SENSOR 2 10...

Страница 15: ...40 F Displays when Discharge Air sensor is connected and displays measured discharge temperature Displays _ _ _F if sensor sends invalid value if not connected short or out of range OA TEMP _ _ _ F 40...

Страница 16: ...led by CFM VENTMIN L 3 7 V N A N A VENTMIN H 2 8 V N A N A ERV OAT SP 32 F 0 to 50F increment by 1 Only when AUX1 O ERV EXH1 SET With 2 speed fan units Exh1 L low speed fan and Exh1 H high speed fan s...

Страница 17: ...f the dampers Resets ventilation based on the RA OA and MA sensor conditions Requires all 3 RA OA and MA sensors MAT T CAL 0 0 F 2 5 F Allows for the operator to adjust for an out of calibration tempe...

Страница 18: ...hen replace sensor if the alarm continues OA SENS T ERR N A N A Outdoor air temperature sensor has failed or become disconnected check wiring then replace if the alarm continues ACT ERROR N A N A Actu...

Страница 19: ...tem as a test that the system is operable SETUP AND CONFIGURATION W7220 Economizer Module Wiring Use Fig 33 and Tables 7 and 8 to locate the wiring terminals for the economizer module NOTE The four te...

Страница 20: ...below the selected boundary the economizer sets the economizing mode to YES economizing is available When all of the OA conditions are above the selected boundary the conditions are not good to econom...

Страница 21: ...12 HH57AC081 Sensor DIP Switch If using differential return enthalpy or temperature option see Table 9 for California Title 24 setting requirements by region ENTHALPY CURVE TEMP DRY BULB F TEMP DEWPOI...

Страница 22: ...until Y2 is closed The economizer control will call for compressor operation Dampers will modulate to maintain SAT at set point concurrent with Compressor 1 operation The Low T Temp setting default 32...

Страница 23: ...inals Temperature sensors are to be wired to the OAT and MAT terminals If my enthalpy sensor drifts in accuracy over time can I re calibrate it The sensor is not able to be re calibrated in the field...

Страница 24: ...t to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53480147 01 Printed in U S A Form IIK CRECOMZR74 04 Pg 24 9 21 Replaces...

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