Lennox CBX25UH 10 Series Installation And Service Procedure Download Page 13 | Manualshive

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Page 13

7. Reinstall the brackets that hold the coil and horizontal

drain pan in place. See figure 23.

Figure 23. Reinstall Brackets that Hold the Coil and

Horizontal Drain Pan in Place

8. Reinstall the blower and coil access panels.

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Summary of Contents for CBX25UH 10 Series

Page 1: ...ections 16 Wiring Diagrams 18 Start Up Operations 20 Sequence of Operations 21 Performance Checklists 22 The CBX25UH units are high efficiency air handlers Several models are available in sizes rangin...

Page 2: ...nches mm NOTE Unit is shipped configured for horizontal left hand air discharge Unit may be converted to horizontal right hand air discharge by repositioning horizontal drain pan Dimensions remain the...

Page 3: ...ly 2 0 2 0 2 4 2 5 Blower Motor Full Load Amps 1 6 1 6 1 9 2 0 SPECIFICATIONS General Data Model Number CBX25UH 042 CBX25UH 048 CBX25UH 060 Nominal tonnage 3 5 4 5 Connections Suction Vapor line o d i...

Page 4: ...ion 5 Determine the required blower speed and connect either the blower lead RED LO or BLACK HI to the blower relay harness NOTE Reuse the factory installed plastic cap on the connector that is not us...

Page 5: ...1970 1645 1800 1850 1565 1685 1719 1470 1560 1595 60 Low Red Med Blue High Black 1675 1965 2140 1630 1925 2085 1580 1875 2000 1520 1800 1895 1450 1695 1795 NOTE Refer to wiring diagram located on the...

Page 6: ...of normally open N O contacts closes to energize the blower motor on cooling speed When de energized a set of normally closed N C contacts allows the electric heat relay to energize the blower on hea...

Page 7: ...n the air handler unit before setting the air handler unit and attaching the plenum 1 Shut off all power to the air handler unit More than one disconnect may be required 2 Remove air handler access pa...

Page 8: ...ischarge which will require no change in the circuit breaker orientation However if the air handler is installed in a horizontal right hand discharge position the breaker will need to be rotated 180 s...

Page 9: ...the National Electric Code ANSI NFPA No 70 or tables 1 through 4 in the Canadian Electric Code Part I CSA Standard C22 1 Refer to figure 28 for typical low voltage field wiring for air handler conden...

Page 10: ...c air handler installation instructions for air handler speed adjustment procedure and location 1 Set the thermostat above room temperature 2 Check the heat pump and the heat section for normal operat...

Page 11: ...ch plugs are required for drain line connections 2 With access door removed remove drain line plugs to install drain lines 3 Set unit so that it is sloped toward the drain pan end of the unit see figu...

Page 12: ...n 180 and reinstall on coil as shown by the arrow above Reinstall the top cap Rotate the blow off prevention brackets 180 and reinstall using the same screws Use the correct mounting holes the bracket...

Page 13: ...stall the brackets that hold the coil and horizontal drain pan in place See figure 23 Figure 23 Reinstall Brackets that Hold the Coil and Horizontal Drain Pan in Place 8 Reinstall the blower and coil...

Page 14: ...INISHED SPACE THE SECONDARY DRAIN PAN MUST HAVE A LARGER FOOTPRINT THAN THE AIR HANDLER MAIN DRAIN TO APPROVED DRAIN FOR NEGATIVE PRESSURE COILS BLOWER AFTER COIL TRAPS ARE REQUIRED ON ALL DRAIN LINES...

Page 15: ...no leaks are found in drain line fittings and water is draining from the end of the primary drain line 3 Correct any leaks found DUCT SYSTEM The air handler is provided with flanges for the connection...

Page 16: ...g Failure to do so can result in death or elec trical shock WARNING Electric Shock Hazard Can cause injury or death Foil faced insulation has conductive characteristics sim ilar to metal Be sure there...

Page 17: ...pplies 2 Remove the air handler access panel 3 Using the wiring diagram located on the unit access panel as a reference move the 2 connected black transformer leads from the 240 volt terminal on the t...

Page 18: ...AT HEAT PUMP APPLICATION WITH ELECTRIC HEAT NOTE Connect common wire only if required Refer to the appropriate thermostat installation instructions BU BU SEE NOTE SEE NOTE SEE NOTE Y Y AIR CONDITIONER...

Page 19: ...K CONNECT COMMON WIRE ONLY IF REQUIRED REFER TO THE APPROPRIATE THERMOSTAT INSTALLATION INSTRUCTIONS CONDENSING UNIT Air Handler AIR HANDLER THERMOSTAT Heat Pump Application With Electric Heat AIR HAN...

Page 20: ...finished ceiling or in any installation where condensate overflow could cause damage S Have ALL unused drain pan ports been properly plugged S Has the condensate line been properly sized run trapped p...

Page 21: ...g demand the indoor blower and outdoor unit should cycle off Air handler should cycle off 45 seconds after the outdoor unit shuts off HEATING ELECTRIC HEAT ONLY When the thermostat calls for heat the...

Page 22: ...Mode Return Duct Temperature ___________ THERMOSTAT Adjusted and Programmed Return External Static ______ ______ Total External Static ______ ______ 6 Supply Duct Temperature ___________ Temperature...

Page 23: ...ternal Static ______ ______ 6 6 Supply Duct Temperature ___________ Temperature Drop ___________ TEMPERATURE RISE Heating Mode Return Duct Temperature __________ Supply Duct Temperature __________ Tem...

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