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Copyright 2012 Carrier Corporation ● 7310 W. Morris St. ● Indianapolis, IN

Manufacturer reserves the right to discontinue, or change at any time, specification or designs without notice and without incurring obligations

Catalog No. IIK-CRECOMZR67-01

Edition Date: 5/12

Replaces: New

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Содержание CRECOMZR067A00

Страница 1: ...entilation is supported Units displaying 17th position of the model number to indicate that the unit is equipped with the factory installed VFD Variable Frequency Drive option for 2 speed indoor fan control The VFD option is required for units equipped with EconoMi er X For detailed information on the VFD see the Variable Frequency Drive VFD Installation Setup and Troubleshooting Supplement The Ec...

Страница 2: ...y installed outdoor dry bulb temperature sensor with accessory enthalpy sensor HH57AC081 See Fig 1 12 Remove the indoor fan motor access panel See Fig 9 13 The supply air temperature sensor looks like an eyelet terminal with wires running to it The sensor is located on the crimp end and is sealed from moisture Mount the supply air temperature sensor provided to the lower left section of the indoor...

Страница 3: ... 43 19 05 29 5 55 lb CRECOMZR069A00 40 37 22 28 24 48 36 27 80lb CRECOMZR071A00 52 92 27 03 33 41 49 92 98lb NOTE The CRECOMZR071A00 hood has 2 aluminum filters and a hood filter divider that installs between the filters See Fig 5A Fig 5 EconoMi er X Installed in HVAC Unit 3 to 6 Ton Shown Fig 4A Hood for Extra Large Cabinet Hood Filter Divider HVAC Unit Filters Insert Screw in EconoMi er X Flange...

Страница 4: ...xhaust instructions instead 16 Install the EconoMi er X hood over the EconoMi er X Use screws provided See Fig 10 17 The W7220 EconoMi er X controller is shipped mounted to a bracket Install the controller bracket in the top left corner of the unit control box as shown in wiring diagram Fig 8 Screw in place through pre punched holes 18 Connect the plugs coming from the controller as shown in wirin...

Страница 5: ...3 are used to scroll through the menus and menu items select menu items and to change parameter and configuration settings Using the Keypad with Menus To use the keypad when working with menus Press the Up arrow button to move to the previous menu Press the Down arrow button to move to the next menu Press the Enter button to display the first item in the currently displayed menu Press the Menu Up ...

Страница 6: ... sensor Displays _ _ _ o F if not connected short or out of range DA TEMP _ _ _o F 0 to 140o F Displays when Discharge Air sensor is connected and displays measured discharge temperature Displays _ _ _o F if sensor sends invalid value if not con nected short or out of range OA TEMP _ _ _o F 40 to 140o F Displays measured value of outdoor air temperature Displays _ _ _o F if sensor sends invalid va...

Страница 7: ...a is only set if DCV is used This is the ventilation for less than maximum occupancy of the space In AUTO mode dampers controlled by CFM VENTMIN L 3 7 V VENTMIN H 2 8 V ERV OAT SP 32o F 0 to 50o F 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 settings are required 50 0 to 100 increment by 1 Setpoint for OA damper position when ex...

Страница 8: ...or an out of calibration temperature sensor RA H CAL 0 RH 10 RH Allows for operator to adjust for an out of calibration humidity sensor DA T CA 0 0o F 2 5o F Allows for the operator to adjust for an out of calibration temperature sensor CHECKOUT DAMPER VMIN HS n a n a Positions damper to VMIN position DAMPER VMAX HS n a n a Positions damper to VMAX position DAMPER OPEN n a n a Position damper to t...

Страница 9: ...and Terminal Blocks Time out and Screen Saver When no buttons have been pressed for 10 minutes the LCD displays a screen saver which cycles through the Status items Each Status item displays in turn and cycles to the next item after 5 seconds Label Type Description Top Left Terminal Block MAT MAT 20k NTC and COM Mixed Air Temperature Sensor Polarity insensitive connections OAT OAT 20k NTC and COM ...

Страница 10: ...o F Enthalpy btu lb da Point P1 Point P2 Temp o F Humidity RH Temp o F Humidity RH ES1 80 0 60 0 28 0 80 0 36 8 66 3 80 1 ES2 75 0 57 0 26 0 75 0 39 6 63 3 80 0 ES3 70 0 54 0 24 0 70 0 42 3 59 7 81 4 ES4 65 0 51 0 22 0 65 0 44 8 55 7 84 2 ES5 60 0 48 0 20 0 60 0 46 9 51 3 88 5 HL 86 0 66 0 32 4 86 0 38 9 72 4 80 3 Fig 13 shows the 5 current boundaries There is also a high limit boundary for differ...

Страница 11: ...dampers will be closed When SAT rises to 48o F the damp ers will re open to Minimum Position setting Should 100 outside air not be capable of satisfying the space tempera ture space temperature will rise until Y2 is closed The economizer control will call for compressor operation Dampers will modulate to maintain SAT at 50 to 55o F concurrent with Compressor 1 operation The Low Ambient Lockout The...

Страница 12: ... power returns above 18 Vac Alarms The Economizer module provides alarm messages that display on the 2 line LCD NOTE Upon power up the module waits several seconds before checking for alarms This allows time for all the configured devices e g sensors actuator to become operational If one or more alarms are present and there has been no keypad activity for at least 5 minutes the Alarms menu display...

Страница 13: ...I am using enthalpy sensors Why did the control ask me to input a dry bulb changeover temperature In the even the humidity sensor in the enthalpy sensors fails the backup algorithm in the control is to default to the temperature sensor in the enthalpy sensor In checkout the outdoor damper closes when I command it to open Check the actuator linkage or rotation In the CHECKOUT mode the outdoor dampe...

Страница 14: ...n 7310 W Morris St Indianapolis IN Manufacturer reserves the right to discontinue or change at any time specification or designs without notice and without incurring obligations Catalog No IIK CRECOMZR67 01 Edition Date 5 12 Replaces New ...

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