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B4VM-E INSTALLATION INSTRUCTIONS AIR HANDLER Series IMPORTANT Please read all information in this manual thoroughly and become familiar with the capabilities and use of your appliance before attempting to operate or maintain this unit. These instructions are primarily intended to assist qualified individuals experienced in the proper installation of this appliance.
TABLE OF CONTENTS IMPORTANT SAFETY INFORMATION INSTALLER: Please read all instructions before servicing Important Safety Information ........2 this equipment. Pay attention to all safety warnings and Requirements & Codes ..........3 any other special notes highlighted in the manual. Safety General Information ...........4 markings are used frequently throughout this manual to Before You Install this Unit .........4 designate a degree or level of seriousness and should not...
REQUIREMENTS & CODES The information listed below is for reference purposes only and does not necessarily have jurisdiction over local or state WARNING: codes. Always consult with local authorities before installing any gas appliance. This unit must be installed in accordance with Duct Systems instructions outlined in this manual during •...
GENERAL INFORMATION Locating the Air Handler • Survey the job site to determine the best location for This appliance has been tested for capacity and efficiency mounting the unit. Consideration should be given to in accordance with AHRI Standards and will provide availability of electric power, service access, and noise.
handler must be cleaned and/or repaired if found to ducts should be appropriately sized to the capacity of be dirty, damaged, or malfunctioning in any way by the air handler to ensure its proper airflow rating. • Use transition fittings if the supply and/or return air a qualified HVAC technician.
noise eminating from the air handler. These treatments can produce a quieter installation, particularly in the heated space. However, they can increase the pressure drop in the duct system. Care must be taken to maintain the proper maximum pressure differential across the air handler, temperature rise and flow rate.
Horizontal Installations 4. Remove the corresponding drain line knockout from The B4VM-E Series air handler can be installed horizontally the coil access door to allow access to the horizontal in an attic, basement, crawl space or alcove. It can also be drain.
Refrigerant Line Connections CAUTION: WARNING: Before brazing the air handler, remove the core from the service port. Failure to comply may NITROGEN result in leakage at the service valve. Replace HEALTH the core and cap once brazing is complete. FLAMMABILITY •...
9. Charge the system with refrigerant. Refer to the a minimum diameter of 3/4” and be trapped separately. outdoor unit installation manual for additional charging IMPORTANT: Failure to install a trap may result in instructions. condensation overflowing the drain pan, resulting in 10.
Pre-Electrical Checklist the National Electrical Code (ANSI/NFPA 70) or the CSA √ Verify the voltage, frequency, and phase of the supply C22.1 Electrical Code. Use the grounding lug provided in source match the specifications on the unit rating plate. the control box for grounding the unit. √...
STARTUP & ADjUSTMENTS 6. Weigh in the proper amount of new (or reclaimed) refrigerant. WARNING: Refrigerant Charging The system refrigerant charge can be checked and adjusted through the service ports provided at the front NITROGEN panel of the outdoor unit. Use only gauge lines which have HEALTH a Schrader depression device present to actuate the valve.
UNIT MAINTENANCE Blower Compartment: Dirt and lint can create excessive loads on the motor resulting in higher than normal operating Proper maintenance is most important to achieve the best temperatures and shortened service life. It is recommended performance from a air handler. Some of the components that the blower compartment be cleaned of dirt or lint and their locations are shown in Figure 9 (page 15).
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Heating Element Circuit Assembly Breaker (60A) Transformer Board Blower Control Upper Door Wheel Board Assembly Capacitor Motor Mount Kit Blower Housing Interface Board Blower Motor Coil Filter Assembly Door Horizontal Vertical Drain Pan Drain Pan Filter Tracks Lower Door Assembly Figure 9.
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G Y/Y2 O W1 W2 Y1 FUSE 24VAC L2COM L1/VSPOWER XFMR X13 COOL X13 HEAT X13 COM Figure 10. X13 Motor Control Board THERM THERM/PRESS R-410A 1 2 3 4 5 6 7 8 R-22 COMM Figure 11. B4VM-E EXV Control Board...
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Figure 12. Wiring Diagram for B4VM-E Series Air Handler with iQ Drive...
INSTALLATION / PERFORMANCE CHECK LIST ELECTRICAL SYSTEM: ATTENTION INSTALLERS: Electrical connections tight? It is your responsibility to know this product better than your customer. This includes being able to install the product according to strict Line voltage polarity correct? safety guidelines and instructing the customer on how to operate and maintain the equipment for the life of the product.