Lennox BCE3M E Series Installation Instructions Manual

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BCE3M*E SERIES AIR HANDLER

These instructions must be read and understood completely before attempting installation.

This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in

manuals, be alert to the potential for personal injury or death.

THIS MANUAL MUST BE LEFT WITH THE

HOMEOWNER FOR FUTURE REFERENCE

Manufactured By

Allied Air Enterprises

A Lennox International, Inc. Company

215 Metropolitan Drive

West Columbia, SC 29170

507623-02

INSTALLATION INSTRUCTIONS

Unit Dimensions ..........................................................2

Shipping and Packing List ...........................................3

General ........................................................................3

Requirements ..............................................................3

Installation Clearances ................................................4

Installation ...................................................................4

Condensate Drain........................................................8

Duct System and Filters ............................................10

Brazing Refrigerant Lines ..........................................11

Sealing the Unit .........................................................13

Electrical Connections ...............................................13

Air Flow - Cooling Blower Speed ............................17

Check-Out Procedures ..............................................19

Operation ...................................................................19

Maintenance ..............................................................20

Cabinet Insulation ......................................................20

Use of Air Handler During Construction.....................20

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 installer (or

equivalent), service agency or the gas supplier.

*P507623-02*

Issue 1810

WARNING

(P) 507623-02

Page 1 of 22

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Page 1: Table Of Contents
Installation and service must be performed by a licensed professional installer (or equivalent), service agency or the gas supplier. Manufactured By *P507623-02* Allied Air Enterprises A Lennox International, Inc. Company (P) 507623-02 215 Metropolitan Drive West Columbia, SC 29170 507623-02 Issue 1810...
Page 2: Unit Dimensions
Unit Dimensions 1 (25) SUPPLY AIR OPENING 1 (25) 1 (25) LOW VOLTAGE INLETS (Top and Right Side) LINE VOLTAGE INLETS (Top and Left Side) TOP VIEW 3/4 (19) LINE VOLTAGE INLETS (Top and Right Side) CIRCUIT LOW VOLTAGE INLETS BREAKER (Either Side) COVER...
Page 3: Shipping And Packing List
CAUTION CAUTION Physical contact with metal edges and corners while The Clean Air Act of 1990 bans the intentional venting applying excessive force or rapid motion can result in of refrigerant (CFCs, HCFCs and HFCs) as of July personal injury. Be aware of, and use caution when 1, 1992.
Page 4: Installation Clearances
Louvers or return air grilles are field-supplied. Local codes WARNING may limit application of systems without a ducted return to single-story buildings. Danger of explosion. Keep flammable When a BCE3M*E unit is installed in a closet with a materials and vapors, such as gasoline, away louvered return opening, the minimum open area for the from air handler.
Page 5 Upflow Application Left-Hand Air Discharge The air handler must be supported on the bottom only 1. Determine which plugs are required for drain line and set on solid floor or field-supplied support frame. connections. Securely attach the air handler to the floor or support With access door removed, remove drain line plugs to frame.
Page 6 Right-Hand Air Discharge Remove coil assembly, bottom drain pan and horizontal drain pan as one unit from the air handler. For horizontal right-hand air discharge, the following field See figure 5. modifications are required. Remove the blow-off prevention brackets, top cap and 1.
Page 7 Reinstall the top cap. Rotate the blow-off prevention Reinstall the brackets that hold the coil and horizontal brackets 180º and reinstall using the same screws. drain pan in place. See figure 9. Use the correct mounting holes; the brackets must cover the hairpins.
Page 8: Condensate Drain
Condensate Drain The air handler is provided with ¾” NPT condensate drain connections. IMPORTANT On units of this type, where the blower “draws” rather than “blows” air through the coil, traps must be installed in the condensate drain lines (primary and auxiliary, if used). Traps prevent the blower from drawing air through the drain lines into the air supply.
Page 9 Sloping the Unit NOTE: When installing drain line connection fittings to the drain pan, hand tighten the fitting and use a Make sure the unit is sloped (similar to the slope shown in thread sealant. Over-tightening the fittings can split figure 11) (horizontal or upflow) so that the drain pan will connections on the drain pan.
Page 10: Duct System And Filters
Installing Duct System Duct System and Filters Install the conditioned air plenum, ducts and air filters (not provided) in accordance with NFPA 90B Standard for Duct System the Installation of Warm Air Heating and Air-Conditioning The air handler is provided with flanges for the connection Systems (latest edition).
Page 11: Brazing Refrigerant Lines
Brazing Refrigerant Lines CAUTION Refrigerant lines must be connected by a qualified Brazing alloys and flux contain materials which are technician in accordance with established procedures. hazardous to your health. Avoid breathing vapors or fumes from brazing IMPORTANT operations. Perform operations only in well ventilated areas.
Page 12 PLEASE READ IMPORTANT ISSUES CONCERNING BRAZING OPERATIONS ON PREVIOUS PAGES BEFORE PROCEEDING. NOTE - REFER TO OUTDOOR UNIT INSTALLATION INSTRUCTIONS FOR REFRIGERANT PIPING SIZE REQUIREMENTS. NOTE - Use silver alloy brazing rods with five or six percent minimum silver alloy for copper-to-copper brazing, 45 percent alloy for copper-to-brass and copper-to-steel brazing.
Page 13: Sealing The Unit
Sealing the Unit WARNING Seal the unit so that warm air is not allowed into the cabinet. Run 24V Class II wiring only through specified low Warm air introduces moisture, which results in water blow- voltage opening. Run line voltage wiring only through off problems.
Page 14 • The power supply must be sized and protected according to the specifications supplied on the product. • This air handler is factory-configured for 240 volt, single phase, 60 cycles. For 208-volt applications, see “208 Volt Conversion” later in this section. •...
Page 15 WARNING USE COPPER CONDUCTORS ONLY Figure 18. Typical Wiring Diagram 507623-02 Issue 1810 Page 15 of 22...
Page 16 Figure 19. Low Voltage Connections Page 16 of 22 Issue 1810 507623-02...
Page 17: Air Flow - Cooling Blower Speed
These settings are for nominal tonnage match-ups with Air Flow — Cooling Blower Speed the BCE units. When matched with other sizes, it is recommended that the CFM be adjusted to approximately 400 CFM per ton. The cooling blower speed is factory configured to provide correct air flow for an outdoor unit that matches the cooling To change the blower motor speed to tap 2 for 1/2 ton size capacity rating of the air handler.
Page 18 CFM @ ESP - in. W.C. Motor Size Blower Size Speed Unit (hp) (in.) -024 9 x 6 1180 1140 1110 1080 1040 -030 10 x 8 1120 1070 1030 1160 1110 1080 1030 1000 1250 1210 1190 1150 1110 1120 1070 1010...
Page 19: Check-Out Procedures
Check Electric Heater (if used) Check-Out Procedures • Set thermostat to call for auxiliary heat (approximately 5°F above ambient temperature). The indoor blower NOTE: Refer to outdoor unit installation instructions for and auxiliary heat should come on together. Allow a system start-up instructions and refrigerant charging minimum of 3 minutes for all sequencers to cycle on.
Page 20: Maintenance
Emergency Heat (Heating Heat Pump) Repairing Damaged Insulation If the selector switch on the thermostat is set to the Areas of condensation on the cabinet surface are an emergency heat position, the heat pump will be locked out indication that the insulation is in need of repair. of the heating circuit, and all heating will be electric heat (if If the insulation in need of repair is otherwise in good applicable).
Page 21 Installing Contractor’s Name_______________________ Installing Date_______________________________ Installing Contractor’s Phone_______________________ Air Handler Model #___________________________ Job Address____________________________________ Thermostat Line Voltage SUPPLY Disconnect Switch Integrated Control Temperature Duct Blower Motor Amps System Electric Heat Amps Duct Static RETURN Filter Drain Line DUCT SYSTEM TOTAL EXTERNAL STATIC (dry coil) dry coil wet coil SUPPLY AIR DUCT...
Page 22 Installing Contractor’s Name_______________________ Installing Date_______________________________ Installing Contractor’s Phone_______________________ Air Handler Model #___________________________ Job Address____________________________________ Line Voltage Disconnect Switch Thermostat Integrated Control Duct System Duct System Filter RETURN SUPPLY Electric Heat Amps Blower motor Amps Drain Line Duct Static Temperature DUCT SYSTEM TOTAL EXTERNAL STATIC (dry coil) dry coil wet coil...

Lennox BCE3M E Series Installation Instructions Manual

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