Carrier CRECOMZR085A00 Скачать руководство пользователя страница 9 | Manualshive

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Fig. 22 — Enthalpy Curve Boundaries

Table 6 — Single Enthalpy and Dual Enthalpy High Limit Curves

ENTHALPY

CURVE

TEMP. DRY

BULB (°F)

TEMP.

DEWPOINT (°F)

ENTHALPY

(btu/lb/da)

POINT P1

POINT P2

TEMP. (°F)

HUMIDITY

(%RH)

TEMP. (°F)

HUMIDITY

(%RH)

ES1

80

60

28.0

80

36.8

66.3

80.1

ES2

75

57

26.0

75

39.6

63.3

80.0

ES3

70

54

24.0

70

42.3

59.7

81.4

ES4

65

51

22.0

65

44.8

55.7

84.2

ES5

60

48

20.0

60

46.9

51.3

88.5

HL

86

66

32.4

86

38.9

72.4

80.3

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Содержание CRECOMZR085A00

Страница 1: ...autions in the literature tags and labels attached to the unit and other safety precautions that may apply Follow all safety codes including ANSI American National Standards Institute Z223 1 Wear safety glasses and work gloves Use quenching cloth for unbrazing operations Have fire extinguisher available for all brazing operations It is important to recognize safety information This is the safety a...

Страница 2: ...BDCIOX005A00 is an accessory that contains both 33ZCSENS CO2 and 33ZCASPCO2 accessories NOTE Dry Bub sensor HH79AH001 is included in the kit Dry Bulb sen sor HH79ZZ007 can be used as a replacement part CAUTION PERSONAL INJURY HAZARD Failure to follow this caution can result in personal injury and damage to the unit Cover the duct opening as a precaution so objects cannot fall into the return duct ...

Страница 3: ...e ID inside dimension of the panel with the ID of the economizer then attach using pro vided screws See Fig 4 7 If the EconoMi er X system will be operating with an enthalpy outside air sensor remove the factory installed HH79AH001 dry bulb sensor from the front face of the economizer see Fig 1 and install the accessory enthalpy sensor HH57AC081 in the same location Connect the 2 wire gray harness...

Страница 4: ...ign with top holes on O A panel Fasten with provided sheet metal screws See Fig 6 10 Install the O A hood to the O A panel over the EconoMi er assembly Use screws provided See Fig 6 11 Attach R A blank off panel See Fig 7 Grommet must be installed before duct work is installed 12 Attach the O A hood assembly to the OA panel with included screws See Fig 6 13 Install provided barometric relief hood ...

Страница 5: ...ECON plug currently connected to the Unit Control Board UCB See Fig 11 16 Connect the 12 pin female ECON plug removed from the UCB to the 12 pin male plug from the controller harness Refer to Fig 12 and wiring diagram on page 7 17 Connect the 12 pin female plug from the controller harness to ECON on the UCB Refer to Fig 13 and wiring diagram on page 7 Fig 9 Typical Indoor Fan Motor Access Panel Lo...

Страница 6: ... holes See Fig 16 Connect one of the 2 green wire harnesses into the HH79AH001 sensor and then connect the green wires to the orange and brown wires routed from the control See Fig 17 23 The supply air temperature sensor may look like an eyelet terminal with wires running to it HH79ZZ007 The sensor is located on the crimp end and is sealed from moisture Mount the supply air temperature sensor prov...

Страница 7: ...Economizer Wiring Diagram To Control Box ORG BRN Bundle these connections into the corner post with wire tie GRN GRN W7220 SAT Sensor Ref To Control Box ORG BRN GRN GRN W7220 Ring Terminal Ref PL6 Ref Bundle these connections into the corner post with wire tie PNK VIO VIO PNK ...

Страница 8: ...etpoints the outside air can be used for free cooling When any of these is above the setpoint free cooling will not be available Figure 22 shows the enthalpy boundaries in the W7220 controller There are 5 enthalpy boundaries setpoints ES1 thru ES5 which are defined by dry bulb temperature enthalpy and dew point ES3 is the default setting See Fig 22 Single Enthalpy and Dual En thalpy High Limit Cur...

Страница 9: ...RVE TEMP DRY BULB F TEMP DEWPOINT F ENTHALPY btu lb da POINT P1 POINT P2 TEMP F HUMIDITY RH TEMP F HUMIDITY RH ES1 80 60 28 0 80 36 8 66 3 80 1 ES2 75 57 26 0 75 39 6 63 3 80 0 ES3 70 54 24 0 70 42 3 59 7 81 4 ES4 65 51 22 0 65 44 8 55 7 84 2 ES5 60 48 20 0 60 46 9 51 3 88 5 HL 86 66 32 4 86 38 9 72 4 80 3 ...

Страница 10: ...el the Fixed Enthalpy limit value shall be set to the enthalpy value at 75 F and 50 relative humidity As an example at approximately 6 000 foot elevation the fixed enthalpy limit is approximately 30 7 Btu lb LEGEND Demand Controlled Ventilation Refer to Fig 17 for EconoMi er X wiring DCV instructions if demand controlled ventilation CO2 sensor is used The CO2 sensor will wire into the blue and bla...

Страница 11: ...le to some codes is an annunciator light visible by service personnel See Fig 25 and 26 for typical wiring to the controller Refer to codes for proper labeling of light Fig 25 Thermostat Wired For Remote FDD Fig 26 Annunciator Light Wired for Remote FDD C R AUX2 1 OCC E GND EXH1 AUX1 0 Y2 I Y2 O Y1 I Y1 O C R W7220 ECONOMIZER U1 U1 R Rc C A L A FURNACE AIR HANDLER OR RTU TH8321R OR TH8321WF SUB BA...

Страница 12: ...the current menu parameter 10 Press the Menu Up Exit button to return to the previous menu Programming the W7220 Controller The next several pages detail the different status displays set points setup and alarms available on the controller The list below and Table 8 summarize the inputs required for a standard application with a single outside air sensor NOTE Instead of setting the SETPOINTS you c...

Страница 13: ...o 1 speed Table 8 Standard W7220 Controller Configuration CONTROLLER MENU ITEM FOR SINGLE SPEED UNIT FOR 2 SPEED UNIT NOTE DEFAULT SET TO DEFAULT SET TO SET POINTS MAT SET 53 F 38 F to 70 F 53 F 38 F to 70 F LOW T LOCK 32 F 45 F to 80 F 32 F 45 F to 80 F DRYBLB SET 63 F 48 F to 80 F 63 F 48 F to 80 F Only displayed if using single DB OA sensor ENTH CURVE ES3 ES1 to ES5 ES3 ES1 to ES5 Only displaye...

Страница 14: ...if sensor sends invalid value short or out of range OA HUM _ _ 0 to 100 OUTSIDE AIR RELATIVE HUMIDITY Displays measured value of outdoor humidity from OA sensor Displays __ if not connected short or out of range RA TEMP _ _ _ F or C 0 F to 140 F 18 C to 60 C RETURN AIR TEMPERATURE Displays measured value of return air temperature from RAT sensor Displays _ _ _ if sensor sends invalid value if not ...

Страница 15: ...T LOW SPEED Displays only if a CO2 sensor is connected Used for Vbz ventilation max cfm set point Displays 2 to 10 V if 3 sensors RA OA and MA In AUTO mode dampers controlled by cfm VENTMAX M 5 4V 2 to 10 vdc DCV MAXIMUM DAMPER POSITION AT MEDIUM SPEED Only displays if unit is set for 3 speed with 1 heat and 2 cool Set for HEATING ventilation VENTMAX H 4 4V 2 to 10 vdc DCV MAXIMUM DAMPER POSITION ...

Страница 16: ...g fans etc will shut off DCVCAL ENA MAN MAN manual AUTO Turns on the DCV automatic control of the dampers Resets ventilation based on the RA OA and MA sensor conditions Requires all 3 RA OA and MA sensors For single speed units only MAT T CAL 0 0 F or C 2 5 F 1 4 C MIXED AIR TEMPERATURE CALIBRATION Allows for the operator to adjust for an out of calibration mixed air temperature MAT sensor OA T CA...

Страница 17: ...nected check wiring then replace sensor if the alarm continues OA SENS T ERR n a n a OUTSIDE AIR TEMPERATURE SENSOR ERROR Outdoor air temperature sensor has failed or become disconnected check wiring OAT sensor connected at input terminals OAT then replace if the alarm continues OA SYLK SENS ERR n a n a OUTSIDE AIR ENTHALPY SENSOR ERROR OAT sensor connected on S bus DA T SENS ERR n a n a DISCHARGE...

Страница 18: ...rt cycle the compressors Table 10 Economizer Module Left Hand Terminal Blocks 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 Outdoor Air Temperature Sensor Polarity insensitive connection S BUS S BUS S BUS Sylk Bus Enthalpy Control Sensor Polarity insensitive connection Bottom Left Termina...

Страница 19: ...ontrol will call for compressor operation Dampers will modulate to maintain MAT at set point concurrent with Compressor 1 operation The Low T Lock setting default 32 F will lock out compressor operation when outside air temperature is below setpoint When space temperature demand is satisfied thermostat Y1 opens the dampers will return to Minimum Damper position if indoor fan is running or fully cl...

Страница 20: ...nput a limited offset in temperature and humidity for each sensor that is connected to the economizer Can I go back to factory defaults and start over Under the SYSTEM SETUP menu you can change the set points to the factory defaults Will I be able to see the LCD screen when it is in the unit The LCD screen has a backlight that is always illuminated What is a good set point for the Mixed Air Temper...

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