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5

NOTE: Sensor will vary from illustration depending on control system.

Fig. 11 — 

Supply Air Sensor Placement

12.  Assemble the outside air hood per Fig. 12-14

 a. Install filter supports (Item #1) to the upper end panel

using the screws provided.

 b. Install each deflector (Item #8) on to each filter support

(Item #1) using the screws provided. (See Fig. 12.)

 c. Apply seal strip to mating flanges on side plates of hood

(Items #4 and #5).

 d. Secure side panels (Items #4 and #5) to upper panel.

 e. Apply seal strip to mating flange of the hood.   

(See Fig. 12.) 

 f. Secure  hood  top  (Item  #3)  to  upper  panel  using  the

screws provided. NOTE: On 44 in. chassis, remove the

screws from across top cover of unit. The rear flange of

hood top will slide behind unit top over flange.

 g. Secure side retainers (Item #6) to side panels (Item #4

and  #5)  using  the  screws  provided,  screwing  from

outside of the hood. 

 h. Secure each central retainer (Item #2) to the hood top

(Item  #3). Align  central  retainers  to  holes  located  on

filter  support  (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 #3).

 k. Install outdoor air screens by sliding them into each of

the 4 spaces created by the hood, filter support and cen

-

tral retainers. First insert the air screen into the pocket

created at the end of the hood (Item #3). Then put the air

screen completely into place, slide them back into pocket

created in the filter support (Item #1). NOTE: Repeat for

each  air  screen.  See  Fig.  13  for  completed  hood

assembly.

13. Install the hood assembly on the unit. (See Fig. 14.)
14. Install the hood screens and other approved EconoMi$er X

accessories.

Fig. 12 — 

Hood Assembly

Supply Air
Temperature
Sensor
Mounting
Location

ITEM #

DESCRIPTION

QTY

1

Filter Supports

3

2

Central Retainer

3

3

Hood Top

1

4

Left Hood Side

1

5

Right Hood Side

1

6

Side Retainer

2

7

Top Diverters

2

8

Deflectors

3

Apply seal strip
to the front of
this flange

Apply seal strip
to the back
of this flange

Apply seal strip
to the back
of this flange

Apply seal strip
to the back
of this flange

7

7

3

5

6

8

8

2

8

6

4

2

1

2

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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