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FRONT 

W

E

I

V

 

D

N

E

W

E

I

V

ANGLE IRON OR SHEET

METAL

E

ANCE 102 MM

MAXIMUM 13 MM

LONG SCREW

AIR FLOW

FIGURE 3

. Suspending Horizontal Unit

RIGHT-HAND AIR DISCHARGE 

For horizontal right-hand air discharge, the following field 

modifications are required.

1 -   Remove and set aside blower and coil access 

panels.

2 - 

Remove brackets securing pan to unit. See figure 4.

FIGURE 4

. Remove Main Drain Pan 

 

Mounting Brackets

3 -   

Remove coil assembly, bottom drain pan and 

horizontal drain pan as one unit from the air handler.

FIGURE 5

. Remove Coil Assembly, Bottom Drain Pan 

and Horizontal Drain Pan as a Unit

4 -   Remove the blow-off prevention brackets, top cap 

and  drip pan between slabs. Move the horizontal 

drain pan to the opposite side of the coil.

FIGURE 6

. Remove Blow-Off Prevention Brackets, 

Top Cap and Drip Pan

5 -   Rotate drip pan 180º and reinstall on coil as shown 

by the arrow above. Reinstall the top cap. Rotate 

the blow-off prevention brackets 180º and reinstall 

using the same screws. Use the correct mounting 

holes; the brackets must cover the hairpins. See 

figure 7.

Summary of Contents for CBX25UH-024

Page 1: ...Check the air handler for shipping damage if found im mediately contact the last carrier Check the unit rating plate to confirm that delivered unit matches order General Information The CBX25UH air ha...

Page 2: ...Page 2 CBX25UH Unit Dimensions Upflow Inches mm...

Page 3: ...e instructions can result in death explosion or fire IMPORTANT Excessive condensation may occur if the unit is installed in a warm humid place When the unit is installed in an unconditioned space appl...

Page 4: ...n HORIZONTAL DRAIN PAN MUST BE REMOVED UP FLOW DOWN FLOW DRAIN PAN FIGURE 1 Upflow Configuration HORIZONTAL APPLICATIONS IMPORTANT When removing the coil there is a possibility of danger of equipment...

Page 5: ...ssembly bottom drain pan and horizontal drain pan as one unit from the air handler FIGURE 5 Remove Coil Assembly Bottom Drain Pan and Horizontal Drain Pan as a Unit 4 Remove the blow off prevention br...

Page 6: ...ck into the air handler FIGURE 8 Slide Coil Assembly Bottom Drain Pan and Horizontal Drain Pan Back Into the Air Handler as a Unit 7 Reinstall the brackets that hold the coil and horizontal drain pan...

Page 7: ...LOCATED ABOVE A FINISHED 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...

Page 8: ...n is provided in Service and Application Note ACC002 August 2000 INSTALL CONDENSATE DRAIN The air handler is provided with 3 4 NPT condensate drain connections IMPORTANT On some pans the primary and s...

Page 9: ...completed WARNING Polyol ester POE oils used with HFC 410A refrigerant absorb moisture very quickly It is very important that the refrigerant system be kept closed as much as possible DO NOT remove li...

Page 10: ...azing slide the rubber grommets over the refrigerant lines until they are away from the heat source NOTE Place wet rags against piping plate and around suction line connections 4 Connect the suction a...

Page 11: ...LLOW FILTER ACCESSIBILITY NOTE CBX25UH SERIES UNITS USE NITROGEN OR DRY AIR AS A HOLDING CHARGE IF THERE IS NO PRESSURE WHEN THE RUBBER PLUGS ARE REMOVED CHECK THE COIL FOR LEAKS BEFORE INSTALLING REF...

Page 12: ...te electric power supplies before opening access panel Unit may have multiple power supplies WARNING Electric Shock Hazard Can cause injury or death Foil faced insulation has conductive characteristic...

Page 13: ...ND 5 5 Replace the air handler access panel SIDE TOP FIGURE 15 Electrical Connections Upflow Configuration NOTE To avoid the possibility of moisture damage to the control in some right hand discharge...

Page 14: ...U BLK BLK GRN BLUE BLUE BLU BLK GND 1032 1030 1031 1060 NOTES 1 FACTORY SPEED SET TO MEDIUM BLUE FOR 024 030 036 048 AND 060 2 ALL WIRES NOT LABELED ARE PART OF ITEM 1010 240 FIGURE 17 Typical Wiring...

Page 15: ...r filter in place All factory settings are medium speed All data given while air handler is operating with a dry DX coil All downflow applications run on high speed when utilizing electric heat NOTE R...

Page 16: ...eeds High Medium Low Pa in w g L s cfm L s cfm L s cfm 25 0 10 675 1430 597 1265 517 1095 50 0 20 632 1340 562 1190 486 1030 75 0 30 585 1240 521 1105 451 955 100 0 40 533 1130 472 1000 394 835 125 0...

Page 17: ...seconds 4 Motor ramps down to stop 1 SECOND DELAY OFF 100 L s 100 L s 45 SECS COOLING DEMAND 1 2 3 4 FIGURE 20 Blower Time Delay COOLING COOLING ONLY OR HEAT PUMP When the thermostat calls for coolin...

Page 18: ...e cabinet which leads to sheet metal corrosion and subsequently component failure REPAIRING DAMAGED INSULATION Areas of condensation on the cabinet surface are an indi cation that the insulation is in...

Page 19: ...Duct Temperature ___________ THERMOSTAT Adjusted and Programmed Return External Static ______ ______ Total External Static ______ ______ 6 Supply Duct Temperature ___________ Temperature Drop _______...

Page 20: ...ternal Static ______ ______ 6 6 Supply Duct Temperature ___________ Temperature Drop ___________ TEMPERATURE RISE Heating Mode Return Duct Temperature __________ Supply Duct Temperature __________ Tem...

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