Bryant Legacy 704D--A Скачать руководство пользователя страница 23

23

MOTOR

FAN GRILLE

MOTOR SHAFT

A

A08505

MAX DISTANCE BETWEEN TOP OF FAN GRILLE AND BOTTOM OF FAN BLADE

SIZE

“A”

IN.

MM

24

7.3

185

30

7.3

185

36

7.3

185

42

7.6

193

48

7.6

193

60

7.6

193

Fig. 16 -- Fan Blade Position

COMPRESSOR
ACCESS PANEL

BLOWER
ACCESS 
PANEL

CONTROL
ACCESS
PANEL

A09207

Fig. 17 -- Unit Access Panels

OUTDOOR COIL, INDOOR COIL AND

CONDENSATE DRAIN PAN

Inspect the condenser coil, evaporator coil, and condensate drain

pan at least once each year.
The coils are easily cleaned when dry; therefore, inspect and clean
the coils either before or after each cooling season. Remove all

obstructions, including weeds and shrubs, that interfere with the
airflow through the condenser coil.
Straighten bent fins with a fin comb. If coated with dirt or lint,

clean the coils with a vacuum cleaner, using the soft brush
attachment. Be careful not to bend the fins. If coated with oil or

grease, clean the coils with a mild detergent and water solution.
Rinse coils with clear water, using a garden hose. Be careful not to

splash water on motors, insulation, wiring, or air filter(s). For best
results, spray condenser coil fins from inside to outside the unit. On

units with an outer and inner condenser coil, be sure to clean

between the coils. Be sure to flush all dirt and debris from the unit
base.
Inspect the drain pan and condensate drain line when inspecting
the coils. Clean the drain pan and condensate drain by removing all

foreign matter from the pan. Flush the pan and drain trough with

clear water. Do not splash water on the insulation, motor, wiring, or
air filter(s). If the drain trough is restricted, clear it with a

“plumbers snake” or similar probe device.

OUTDOOR FAN

UNIT OPERATION HAZARD

Failure to follow this caution may result in damage to unit

components.
Keep the condenser fan free from all obstructions to ensure

proper cooling operation. Never place articles on top of the

unit.

CAUTION

!

1. Remove 6 screws holding condenser grille and motor to top

cover.

2. Turn motor/grille assembly upside down on top cover to

expose the fan blade.

3. Inspect the fan blades for cracks or bends.
4. If fan needs to be removed, loosen the setscrew and slide the

fan off the motor shaft.

5. When replacing fan blade, position blade as shown in Fig.

16.

6. Ensure that setscrew engages the flat area on the motor shaft

when tightening

7. Replace grille.

ELECTRICAL CONTROLS AND WIRING

Inspect and check the electrical controls and wiring annually. Be

sure to turn off the electrical power to the unit.
Remove access panels (see Fig. 17) to locate all the electrical
controls and wiring. Check all electrical connections for tightness.

Tighten all screw connections. If any smoky or burned connections

704D

--

--

A

Содержание Legacy 704D--A

Страница 1: ...allation and servicing of this equipment can be hazardous due to mechanical and electrical components Only trained and qualified personnel should install repair or service this equipment Untrained per...

Страница 2: ...gasketing also can result in air leaks and poor unit performance Curb should be level to within 1 4 in 6 35 mm See Fig 6 This is necessary for unit drain to function properly Refer to accessory roof...

Страница 3: ...3 A09467 Fig 2 704D A24 36 Unit Dimensions 704D A...

Страница 4: ...4 A09468 Fig 3 704D A42 60 Unit Dimensions 704D A...

Страница 5: ...B large base IN mm C IN mm D IN mm E IN mm F IN mm G IN mm H IN mm Small or Large CPRFCURB010A00 11 279 10 254 14 356 16 406 47 8 1214 32 4 822 2 7 69 30 6 778 46 1 1170 CPRFCURB011A00 14 356 Large C...

Страница 6: ...ane operators and ground support staff should handle and install this equipment When working with this equipment observe precautions in the literature on tags stickers and labels attached to the equip...

Страница 7: ...7 Install Duct Connections The design and installation of the duct system must be in accordance with the standards of the NFPA for installation of non residence type air conditioning and ventilating...

Страница 8: ...ll ductwork for maximum required airflow either heating or cooling for unit being installed Avoid abrupt duct size increases or decreases or performance may be affected 6 Adequately insulate and weath...

Страница 9: ...d connection 3 Locate the black and yellow wires connected to the line side of the contactor 4 Connect field L1 to black wire on connection 11 of the compressor contactor POWER SUPPLY FIELD SUPPLIED F...

Страница 10: ...174 406 184 COMPRESSORS Quantity Scroll 1 REFRIGERANT R 410A Quantity lb Quantity kg 4 8 2 2 6 2 2 8 6 4 2 9 6 1 2 7 6 4 2 9 10 0 4 5 REFRIGERANT METERING DEVICE TXV OUTDOOR COIL Rows Fins in Face Are...

Страница 11: ...cover refrigerant from system and evacuate to 500 microns if no additional leaks are found 5 Charge unit with Puron R 410A refrigerant using an accurate scale Refer to unit rating plate for required c...

Страница 12: ...ure not used To change cooling speed 1 Remove the vinyl cap off of the desired speed tap wire Refer to Table 3 for color coding Add the wet coil pressure drop in Table 5 to the system static to determ...

Страница 13: ...ower speed WARNING CONTINUOUS FAN OPERATION When the DEHUM feature is not used the continuous fan speed will be the same as cooling fan speed When the DEHUM feature is used the continuous fan will ope...

Страница 14: ...ssure available for ducting Shaded areas indicate airflows that are not recommended for dehumidification control Table 5 704D A Wet Coil Pressure Drop IN W C UNIT SIZE STANDARD CFM S C F M 600 700 800...

Страница 15: ...INSTRUCTIONS TO DETERMINE CORRECT SPEED TAP SETTING 6 DO NOT DISCONNECT PLUG UNDER LOAD 7 THIS FUSE IS MANUFACTURED BY LITTELFUSE P N 257003 8 UNIT FACTORY SHIPPED IN STD MODE ACCESSSORY ELECTRIC HEA...

Страница 16: ...P1 4 P1 3 P1 2 P1 1 P2 4 P2 3 P2 2 P2 1 C C1 C2 HR1 HR4 HR2 HR3 BRN BRN BRN BRN WHT VIO PNK GRY 2 5 4 3 1 BLU PNK RED BLK G Y HIGH C P4 4 P4 3 P4 2 P4 1 P4 5 IFB RED 24VAC IF USED ACCESSORY ELECTRIC...

Страница 17: ...17 A10202C Fig 13 Connection Wiring Diagram 208 230 3 60 704D A...

Страница 18: ...18 A10202L Fig 13 Cont Ladder Wiring Diagram 208 230 3 60 704D A...

Страница 19: ...SES ARE MANUFACTURED BY COOPER BUSSMAN P N FNQ R 5 9 DEHUM FEATURE CANNOT BE USED WHEN ECONOMIZER IS INSTALLED UNIT FACTORY SHIPPED IN STD MODE ACCESSSORY ELECTRIC HEAT HR1 5 KW HR1 2 10 KW HR1 2 3 15...

Страница 20: ...HT VIO PNK GRY 2 5 4 3 1 BLU PNK RED BLK G Y HIGH C P4 4 P4 3 P4 2 P4 1 P4 5 IFB RED 24VAC IF USED ACCESSORY ELECTRIC HEAT G Y RED BRN WHT VIO PNK GRY R C Y1 G W2 W3 50VL500271 YEL L2 ORN SEE NOTE 4 D...

Страница 21: ...21 A08490 Fig 15 Cooling Charging Chart 704D A...

Страница 22: ...with the same dimensional size and type as originally installed See Table 11 for recommended filter sizes Inspect air filter s at least once each month and replace throwaway type or clean cleanable ty...

Страница 23: ...lush all dirt and debris from the unit base Inspect the drain pan and condensate drain line when inspecting the coils Clean the drain pan and condensate drain by removing all foreign matter from the p...

Страница 24: ...ure drop at about 20 psig 957 Pa If system pressure is above this switch should be closed To check switch 1 Turn off all power to unit 2 Disconnect leads on switch 3 Apply ohmmeter leads across switch...

Страница 25: ...an impermeable polyethylene plastic drip cloth or tarp Cover an approximate 10 x 10 ft 3 x 3 m area 2 Cover area in front of the unit service panel with a terry cloth shop towel to absorb lubricant s...

Страница 26: ...ith minimum 700 psig service pressure rating S Leak detectors should be designed to detect HFC refrigerant S Puron as with other HFCs is only compatible with POE oils S Vacuum pumps will not remove mo...

Страница 27: ...compressor Replace and determine cause Insufficient line voltage Determine cause and correct Blocked outdoor coil Determine cause and correct Defective run start capacitor overload or start relay Det...

Страница 28: ...INDOOR EVAPORATOR AIR FILTER IS CLEAN AND IN PLACE VERIFY THAT UNIT INSTALLATION IS LEVEL CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING ORIFICE AND SETSCREW TIGHTNESS III START UP ELECTRICAL...

Страница 29: ...V Control Using a Duct Mounted CO2 Sensor 33ZCSENC02 or CGCDXSEN004A00 and 33ZCASPCO2 or CGCDXASP00100 or CRCBDIOX005A00 CRENTDIF004A00 accessory is used on many different base units As such these kit...

Страница 30: ...ber Table 13 Filter Part Number DESCRIPTION PART NUMBER Indoor Coil Air Filter 12 x 20 x 1 304 8 x 508 x 25 4 mm KH01AA312 NOTE The economizer control settings and the filters are accessible through t...

Страница 31: ...Duct Cover Panel Hood Divider Removed A09691 Fig 20 Horizontal Return Duct Cover Panel Removal Filter Angle Bracket Right Hood Side Panel Left Hood Side Panel Filter Angle Bracket A09692 Fig 21 Filter...

Страница 32: ...nel Hood Top Panel Left Hood Side Panel Hood Divider A09693 Fig 22 Economizer Hood Assembly A09694 Fig 23 Economizer Hood Installation Filter Clips Aluminum Filter A09695 Fig 24 Filter Installation Se...

Страница 33: ...eturn duct cover panel Screw in place ensuring all seams are air and watertight 6 Open economizer hood package found on the top skid Mount OAT sensor to its assigned bracket by screwing together with...

Страница 34: ...698 Fig 27 OAT Bracket Installation Filter Angle Bracket Right Hood Side Panel Filter Angle Bracket Left Hood Side Panel Right Hood Side Left Hood Side A09699 Fig 28 Filter Angle Bracket Installation...

Страница 35: ...mm KH01AA316 18 x 24 x 1 457 2 x 609 5 x 25 4 mm KH01AA318 13 Economizer controls are set to a standard factory setting Nevertheless you can adjust these settings through the filter access door Review...

Страница 36: ...points The temperature changeover is set using 3 dip switches on the sensor The ABCD potentiometer on the controller should be set to the D position See Fig 35 SUPPLY AIR TEMPERATURE SAT SENSOR The su...

Страница 37: ...adjust the outdoor air dampers to minimum position If the outdoor air temperature is below the set point the position of the outdoor air dampers will be controlled to provide free cooling using outdoo...

Страница 38: ...en the outdoor air has a lower enthalpy than the return air and is below the set point the Economizeropenstobringinoutdoorairfor freecooling Replacethe standard outside air dry bulb temperature sensor...

Страница 39: ...e is 75_F 23 9_C 60 x 10 75 x 90 73 5_F 23 1_C 2 Disconnect the supply air sensor from terminals T and T1 3 Ensure that the factory installed jumper is in place across terminals P and P1 If remote dam...

Страница 40: ...CAL ECONOMIZER THE ECONOMIZER MOTOR CONNECTIONS ARE AS SHOWN FOR HORIZONTAL ECONOMIZER THE ECONOMIZER MOTOR IS ATTACHED TO THE ECONOMIZER IV BOARD THE WIRES SHOWN ARE NOT UTILIZED BLK WHT RED 5 WHEN N...

Страница 41: ...41 A10201 Fig 41 Connection Wiring Diagram 230 3 704D A...

Страница 42: ...42 A10201 Fig 41 Cont Ladder Wiring Diagram 230 3 704D A...

Страница 43: ...43 A10203 Fig 42 Connection Wiring Diagram 460 3 704D A...

Страница 44: ...44 A10203 Fig 42 Cont Ladder Wiring Diagram 460 3 704D A...

Страница 45: ...meter to the correct position The same equation can be used to determine the occupied or maximum ventilation rate to the building For example an output of 3 6 volts to the actuator provides a base ven...

Страница 46: ...ree cooling is not available the compressor will be controlled by the thermostat When free cooling is available the outdoor air damper is modulated by the Economizer control to provide a 50_ to 55_F 1...

Страница 47: ...remain in position 5 Turn the DCV set point potentiometer CW until the DCV LED turns off The DCV LED should turn off when the potentiometer is approximately 9 v The actuator should drive fully closed...

Страница 48: ...48 REQUIRED CLEARANCES TO COMBUSTIBLE MATL NEC REQUIRED CLEARANCES REQUIRED CLEARANCE FOR OPERATION AND SERVICING A10230 Fig 43 704D A 30 36 3 Phase with Economizer 704D A...

Страница 49: ...49 REQUIRED CLEARANCES TO COMBUSTIBLE MATL NEC REQUIRED CLEARANCES REQUIRED CLEARANCE FOR OPERATION AND SERVICING A10231 Fig 44 704D A 42 60 3 Phase with Economizer 704D A...

Страница 50: ...nue or change at any time specifications or designs without notice and without incurring obligations E2010 Bryant Heating Cooling Systems D 7310 W Morris St D Indianapolis IN 46231 Edition Date 04 10...

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