background image

Page 1

THIS MANUAL MUST BE LEFT WITH THE 

HOMEOWNER FOR FUTURE REFERENCE

 WARNING

Improper installation, adjustment, alteration, service 

or maintenance can cause property damage, personal 

injury or loss of life. Installation and service must  be 

performed by a licensed professional HVAC installer or 

equivalent, service agency, or the gas supplier.

 CAUTION

As with any mechanical equipment, contact with sharp 

sheet metal edges can result in personal injury. Take 

care while handling this equipment and wear gloves and 

protective clothing.

Shipping and Packing List 

Package 1 of 1 contains: 
1 – Assembled electric heat section 
1 – Bag assembly containing the following: 
        6 – Screws 
        1 – Wiring diagram 
        Circuit breaker cover - 1 each 
1 – Transformer (575V, 3-phase, 60Hz only) 
1 –  Fuse block extension plate (460V, 3-phase, 60Hz and 

575V, 3-phase, 60Hz only)

2 – Adhesive-backed foam seals 
1 – Circuit breaker cover
Check equipment for shipping damage; if found, immedi-

ately contact the last carrier. 

INSTALLATION 

INSTRUCTIONS

ELECTRIC HEAT SECTIONS

507413-02

7/2019

ECB29 Series Units

 WARNING

Electric shock hazard! - Disconnect all power 

supplies before servicing.
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 electric heat for various air handler units. These 

electric heat sections are available in either single- or 

three-phase. Single-phase heat sections are equipped 

with either terminal blocks or circuit breakers.

Refer to the model-specific air handler product specifica

-

tion bulletin for heat section applications.

General Information

These instructions are a general guide and do not su-

persede local codes. Local authorities having jurisdiction 

should be consulted before installation. Read these in-

structions thoroughly before starting installation. 
Be sure to disconnect all power to the unit before you in-

stall and service this equipment. Use proper tools and pro-

tective equipment during installation and service. 
Installation of air handler with or without optional electric 

heat must conform with standards in the National Fire 

Protection Association (NFPA) Standard for Installation of 

Air Conditioning and Ventilation Systems NFPA No. 90A, 

and Standard for Installation of Resident Type Warm Air 

Heating and Air Conditioning System, No. 90B, the man-

ufacturer’s installation instructions, and local municipal 

building codes.

Summary of Contents for ECB29 Series

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

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

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

Page 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...

Reviews: