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 WARNING

Electric Shock Hazard. Can cause injury or 

death. Unit must be properly grounded in 

accordance with national and local codes.
Line voltage is present at all components 

when unit is not in operation on units with 

single-pole contactors. Disconnect all remote 

electric power supplies before opening 

access panel. Unit may have multiple power 

supplies.

Circuit Breaker Installation 

1 -   Install the circuit breaker on the air handler deck 

flange. Use the provided six screws to secure the 

circuit breaker (see figure 3).

NOTE

 – 

When applied in the downflow position,

 

the cir-

cuit breakers must be rotated to the UP position

See 

figure 3 and follow the procedure below:

A - Disconnect power to the unit if present.
B - 

Remove  the  screw  and  slide  the  breakers  off  the 

mounting rail.

NOTE

 – 

You may need to remove the wire tie closest to 

the circuit breaker to allow rotation.

C - Rotate the circuit breaker 180 degrees.
D -  Slide the circuit breaker back on the rail and secure 

in place with previously removed screw.

2 -   The air handler access panels are factory supplied. 

There is a patch plate over the circuit breaker opening.  

Remove the circuit breaker patch plate from the air 

handler access panel. See figure 4. 

3 -  Replace the air handler access door. 
4 -   Choose the appropriately sized adhesive-backed 

circuit breaker seal and remove any perforated 

sections (if needed). Apply the seal to the outside of 

the air handler access panel so that the seal is snug 

around the circuit breakers. 

5 - 

 Break the patch plate for the specific size of electric 

heat section that you are installing. Discard the 

unused piece of patch plate (see figures 5 and 6). 

6 -   Secure the patch plate on the air handler access 

door.

IN DOWNFLOW APPLICATIONS, CIRCUIT BREAKERS

MUST BE ROTATED 180º TO THE UP POSITION.

REMOVE  THE  SCREW  AND  SLIDE  THE

TATE  BREAKERS  180º  AND  SLIDE  BACK

ON RAIL. SECURE WITH SCREW.

CIRCUIT

BREAKER

BRACKET

CIRCUIT

BREAKERS

AIR HANDLER

DECK

CIRCUIT BREAKER

MOUNTING SCREW

FIGURE 3

. Electric Heat Section with Circuit Breakers

CIRCUIT BREAKER

BRACKET

CIRCUIT

BREAKERS

AIR HANDLER

DECK

PATCH PLATE

CIRCUIT

BREAKER

SEAL

AIR HANDLER

ACCESS PANEL

BREAK AT THIS POINT

DISCARD

PATCH PLATE

NOTE — IT IS HIGHLY RECOMMENDED TO USE THE

CIRCUIT BREAKER COVER (ORDERED SEPARATELY).

ORDER CATALOG # 82W01.

FIGURE 4

. Circuit Breaker Seal and Patch Plate Installation

Содержание ECB29 Series

Страница 1: ...ing Replace all parts and panels before operating Failure to do so can result in death or electrical shock Electric Heat Section The ECB29 series electric heat section provides field in stalled electr...

Страница 2: ...ed Remove the extended width knockout to allow for installation of 20kW or 25kW heater see figure 1 4 Slide the electric heat section into the air handler Be careful that the heating elements do not r...

Страница 3: ...ied Thereisapatchplateoverthecircuitbreakeropening Remove the circuit breaker patch plate from the air handler access panel See figure 4 3 Replace the air handler access door 4 Choose the appropriatel...

Страница 4: ...B29 5CB ECB29 6CB ECB29 8CB ECB29 9CB ECB29 10CB ECB29 12 5CB ECB29 15CB ECB29 20CB ECB29 25CB ECB29 30CB ECB29 10CB 3 Ph ECB29 15CB 3 Ph ECB29 20CB 3 Ph ECB29 25CB 3 Ph SIDE OF UNIT DISCARD BREAK AT...

Страница 5: ...ith 1 1 2 inch trade size 1 31 32 inch diameter conduit A conduit reducer washer has been provided if you are installing a smaller sized conduit For single point power supply refer to the nameplate on...

Страница 6: ...ERMOSTAT IS USED CONNECT SECOND STAGE NALS R AND W2 FACTORY INSTALLED JUMPER L3 CONNECTION USED ON Y VOLTAGE 3 PHASE ELECTRIC HEATERS ONLY FIGURE 11 Typical Field Wiring Cooling Application with Elect...

Страница 7: ...PHASE ELECTRIC HEATERS ONLY STATS Y2 USED ONLY WHEN TWO SPEED COMPRESSOR IS USED HP21 COMMON USED ONLY ON SOME THERMOSTATS USING SERVICE LIGHT OPTION S54 WITH SOME ELECTRONIC THERMOSTATS MAY REQUIRE...

Страница 8: ...Page 8 Unit Field Wiring Diagrams FIGURE 13 Typical Unit Wiring Diagram Air Handlers with Constant Torque Motors P Voltage 208 230V 1 phase 60Hz...

Страница 9: ...Page 9 FIGURE 14 Typical Unit Diagram Air Handlers with PSC Non Communicating Motors P Voltage 208 230V 1 phase 60Hz...

Страница 10: ...Page 10 FIGURE 15 Typical Unit Diagram Air Handlers with Constant Torque Motors G Voltage 460V 3 Phase 60Hz...

Страница 11: ...4 01 ECB29 8 P 537816 01 ECB29 10 P 537770 02 ECB29 5CB P 537764 01 ECB29 6CB P 537764 01 ECB29 8CB P 537816 01 ECB29 9CB P 537770 02 ECB29 10CB P 537770 02 ECB29 12 5CB P 537787 02 ECB29 15CB P 53778...

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