Lennox Variable Speed Air Handlers CBX32MV Installation Instructions Manual Download Page 16 | Manualshive

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Page 16

icomfort Touch

t

THERMOSTAT

Air Handler or Furnace

Control

W3

H

O

C

L

Y2

DS

DH

G

R

Y1

W2

W1

R

Y1

L

C

Heat Pump or Air Conditioner Control

Y2

i

−

W

O

i+

DS

R

C

i

−

i+

R

C

i

−

i+

OUTDOOR UNIT

THERMOSTAT

R

C

i

−

i+

Outdoor sensor for outdoor
temperature display
(Optional).

OUTDOOR AIR SENSOR

Figure 16. Control (Field) Wiring Communicating System (icomfort Touch

t

Thermostat)

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Summary of Contents for Variable Speed Air Handlers CBX32MV

Page 1: ...HANDLER 506274 01 06 11 Supersedes 01 11 RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE Table of Contents Shipping and Packing List 1 Upflow Downflow Unit Dimensions 2 Horizontal LH RH Unit Dimensions...

Page 2: ...5 8 16 5 8 16 LOW VOLTAGE RIGHT SIDE LINE VOLTAGE LEFT SIDE DOWNFLOW POSITION 1 25 UPFLOW POSITION CONDENSATE DRAINS 2 UPFLOW AND DOWNFLOW FILTER ACCESS FILTER ACCESS H G H G LINE VOLTAGE INLETS TOP...

Page 3: ...SIDE 5 3 8 137 4 3 8 111 LIQUID LINE SUCTION LINE SUPPLY AIR OPENING FILTER LOW VOLTAGE INLETS TOP AND LEFT SIDE END VIEW BLOWER B C D COIL 3 4 19 3 4 19 3 4 19 RETURN AIR OPENING F E 5 8 16 5 8 16 5...

Page 4: ...jurisdiction before installation Check equipment for shipping damage if found immediately report damage to the last carrier Installation Clearances Cabinet 0 inch 0 mm To Plenum 1 inch 25 mm To Outlet...

Page 5: ...embled to facilitate setting the unit Follow the steps below To disassemble 1 Remove access panels 2 Remove both blower and coil assemblies This will lighten the cabinet for lifting 3 Remove one screw...

Page 6: ...HIGH HUMIDITY AREAS For horizontal applications in high humidity areas remove the downflow rail closest to the drain pan To remove rail 1 Remove the screws from the rail at the back of unit and at th...

Page 7: ...d in figure 4 detail A 5 Remove horizontal drip shield screw located in the left center of the back coil end seal as illustrated in figure 4 detail A 6 Rotate horizontal drip shield 180 front to back...

Page 8: ...zontal drip shield from the corrugated padding between the blower and coil assembly NOTE Discard the corrugated padding and the downflow drip shields from the foam pads on top of the unit The shields...

Page 9: ...ownflow Combustible Base Dimensions Brazing Connections WARNING Polyol ester POE oils used with HFC 410A refrigerant absorb moisture very quickly It is very important that the refrigerant system be ke...

Page 10: ...NOTE REFRIGERANT LINE SETS SHOULD BE ROUTED TO ALLOW FILTER ACCESSIBILITY NOTE CBX32MV SERIES UNITS USE NITROGEN OR DRY AIR AS A HOLDING CHARGE IF THERE IS NO PRESSURE WHEN THE RUBBER PLUGS ARE REMOVE...

Page 11: ...o debris has fallen into the drain pan during installation that may plug up the drain opening MAIN DRAIN Connect the main drain and route downward to drain line or sump Do not connect drain to a close...

Page 12: ...QUIRES A LARGER INSTALLATION SPACE THAN THE J TRAP 91P90 Figure 13 Typical Main and Overflow Drain Installations Inspecting and Replacing Filters IMPORTANT Filter access door must be in place during u...

Page 13: ...iring must conform to the current National Electric Code ANSI NFPA No 70 or Canadian Electric Code Part I CSA Standard C22 1 and local building codes Refer to following wiring diagrams See unit namepl...

Page 14: ...Page 14 Figure 14 CBX32MV Air Handler Unit Typical Wiring Diagram...

Page 15: ...ROL PART NO 50W28 DISCHARGE SENSOR DAT TEMP RESISTANCE F OHMS 30 34 566 40 26 106 50 19 904 60 15 313 70 11 884 80 9 298 90 7 332 100 5 826 DETAIL A NOTE EVENHEAT MODE CANNOT BE ENABLED WITH HARMONY I...

Page 16: ...DS DH G R Y1 W2 W1 R Y1 L C Heat Pump or Air Conditioner Control Y2 i W O i DS R C i i R C i i OUTDOOR UNIT THERMOSTAT R C i i Outdoor sensor for outdoor temperature display Optional OUTDOOR AIR SENSO...

Page 17: ...NCE POINTS COMFORTSENSE T 7000 R R R W3 H W2 W2 W1 W1 W1 O O O L L Y1 Y1 Y1 Y2 Y2 G G C C C T T D B Y2 DS O D SENSOR X2658 Y2 OUT BL 1 1 CUT ON BOARD LINK R O CUT ON BOARD LINK R DS WHEN DEHUMIDIFICAT...

Page 18: ...T 47W97 IS REQUIRED WHEN CONNECTING THE COMFORTSENSE 7000 CATALOG Y0349 WITH THE LSOM 2 RESISTOR KIT NOT REQUIRED WHEN USING COMFORTSENSE 7000 CATALOG Y2081 Figure 19 Control Field Wiring Cooling Appl...

Page 19: ...P8 Position Function Description 1 Heat stage 1 relay coil 2 Heat stage 2 relay coil 3 Relay coil return 4 Heat stage 3 relay coil 5 Heat stage 4 relay coil 6 Heat stage 5 relay coil 7 L1 230VAC supp...

Page 20: ...ED 1 2 3 4 1 2 3 4 1 2 3 4 COOLING HP MODE STANDARD HEAT MODE STAGED BY TSTAT STANDARD HEAT MODE DEFAULT 85 110 115 130 HEATING MODE BLOWER SPEED ELECTRIC HT MODE 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 LOW S...

Page 21: ...in AUTO Humidification position H terminal is energized whenever indoor blower is running 2 EvenHeat Target Discharge Air Temperature selection is used to set discharge air temperatures for EvenHeat...

Page 22: ...to stop DISPLAY An on board single character LED display see figure 21 for LED display location indicates general system status information such as mode of operation indoor blower CFM and error codes...

Page 23: ...andler model size and capacity Blinking 1 When the correct Unit Sized Code is displayed RELEASE push button Selected code will flash for 10 second period 2 During ten second period HOLD push button un...

Page 24: ...k wheel etc Indoor blower motor over temperature motor trip on internal protector Discharge air temperature sensor DATS out of range Restricted airflow Indoor blower motor is running at a reduced CFM...

Page 25: ...580 1380 650 1545 730 NORM 1120 530 1215 575 1315 620 1400 660 975 460 1125 530 1275 600 1400 660 1010 475 1185 560 1200 565 1265 595 900 425 1000 470 1135 535 1265 595 CBX32MV 048 AND CBX32MV 060 BLO...

Page 26: ...ow thermostat demand BASIC MODE Only active on a Y1 thermostat demand Normal Operation 1 On On On Acceptable 24 VAC High 100 ComfortSenset 7000 thermostat energizes Y1 and de energizes D on a call for...

Page 27: ...set point Dehumidification call 2 On On On On Demand 0 VAC High 70 Dehumidification call ONLY 1 On On On On Demand 0 VAC High 70 ComfortSenset 7000 thermostat will keep outdoor unit energized after c...

Page 28: ...l heating demands the indoor blower will run for an additional 10 seconds before de energizing No Yes NOTE If the call for lower heat section is removed AHC will automatically de energize higher heat...

Page 29: ...number for each different air handler model for three seconds Yes No IMPORTANT Field replacement controls may need to be manually configured to validate air handler unit size code AIR HANDLER MODEL CB...

Page 30: ...matically detect number of electric heat sections Electric heat section may be wired to energize more than one element 2 AHC waits for maximum of ten seconds to detect electric heat 22 volt DC relay c...

Page 31: ...two Y1 and Y2 W1 and or W2 Heat Pump First and Second Stage First Electric Heat Section H1 Heat Pump First and Second Stage First Electric Heat Section Sec ond Electric Heat Section H2 if number of e...

Page 32: ...Delay Timer Finished or last change was up stage Delay Timer Finished or last change was down stage Above Turn OFF Electric Heat Section Adjust Target Discharge Air Temperature Turn ON one Electric He...

Page 33: ...and heat pump 2 Set Blower Adjust Selection jumper pin 3 Set Cooling Mode Blower Ramping jumper pin Cooling calls All ramping profiles are active Heating calls Only ramping profiles 1 and 2 are activ...

Page 34: ...or blower per ramping profile No Yes AHC on board link must be cut between Y1 and Y2 to allow 2 stage cooling operation Air Handler Control AHC Indoor Blower Mode Speed and Profiles settings 1 Set Coo...

Page 35: ...appears then release button To clear error codes stored in memory continue to hold push button while the solid three horizontal bars are displayed Release button when solid is displayed Solid c start...

Page 36: ...e for servicing S Has an auxiliary pan been provided under the unit with separate drain for units installed above a finished ceiling or in any installation where condensate overflow could cause damage...

Page 37: ...ue to fall the circuit between R and W1 is completed by the second stage heat room thermostat Circuit R W1 energizes a heat sequencer The completed circuit will energize supplemental electric heat if...

Page 38: ...ide and outside of the cabinet can cause condensation on the inside or outside of the cabinet which leads to sheet metal corrosion and subsequently component failure REPAIRING DAMAGED INSULATION Areas...

Page 39: ...Disposable filters should be replaced with a filter of the same type and size NOTE If you are unsure about the filter required for your system call your Lennox dealer for assistance 3 Reusable Filter...

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