TRANE YSC120H3RHA0000 DX Packaged Cooling Gas Heat Air Conditioner Owner’s Manual

TRANE YSC120H3RHA0000 DX Packaged Cooling Gas Heat Air Conditioner

Product Information

Specifications

• Model: YSC120H3RHA0000
• Parts   List Number: YSCUP11
• Pages: 29

Product Usage Instructions

• Interior Sheet Metal Unit Base Components
  Ensure all components listed under the Interior Sheet Metal Unit Base Components section are properly installed according to the reference numbers provided on pages 2 and 3 of the manual.

• Unit Base Components
  Install the mounting plate, rails, supports, brackets, and other components listed under Unit Base Components on pages 5 and 6 as per the reference numbers provided.

• Blower-Indoor, Plenum Fan & TCO2
  Follow the detailed instructions on page 7 for installing screws, washers, fan assembly, electronics module, connectors, wires, and control limit for the indoor blower and fan components.

• Fan – Outdoor
  Install the outdoor fan components including grille, nuts, rings, motor, and washers as specified on page 10 of the manual.

FAQ

• Q: How to troubleshoot if the indoor fan is not working?
  A: Check the wiring harness connections for the indoor fan motor (1Z, 2S, 3S, GND, 37B, 39B, 40B, 41B, 45B, 108C, 158E) and ensure they are securely connected. If the issue persists, consult a qualified technician.

• Q: Can additional accessories be added to the unit?
  A: Yes, optional field-installed accessories can be added to the unit. Refer to the optional accessories section in the manual for more information on compatibility and installation instructions.

• Q: What should be done if the outdoor fan is noisy?
  A: Inspect the outdoor fan components for any loose parts or debris that may be causing the noise. Tighten any loose screws or nuts and ensure proper alignment of the fan blades. If the noise continues, contact customer support for further assistance.

TOP LEVEL FOR YSC120H3RHA0000
Parts List Number :YSCUP11
Model Number :YSC120H3RHA0000

PACKAGED GAS/ELECTRIC

The sections that appear on this illustration are for all options. Sections and options will appear in the Parts List if factory installed

INTERIOR SHEET METAL

0.125, BLACK NYLON
PNL26730| 3| 1| PANEL; TOP WRAPPER, HEAT EXCHANGER, 19.59 X 12.11

UNIT BASE COMPONENTS

BLOWER – INDOOR, PLENUM FAN

This is a typical illustration. The unit in the field may not appear exactly as shown

INCLUDES WIR05194
CON00105| 3| 1| CONNECTOR; HOUSING; 12 CKT SOCKET HSG MALE
CON00486| 3| 1| CONNECTOR; PLUG HOUSING, 3 PIN MALE
WIR05194| 3| 1| WIRE; HARNESS, INDOOR FAN MOTOR (1Z,2S,3S,GND,37B,39B,40B,41B,45B,108C,158E)
WIR08703| 4| 1| WIRE; HARNESS, LED, WITH BRACKET
CNT03511| 5| 1| CONTROL; LIMIT, 120F, AUTOMATIC RESET, SPST, NC, 15A/120VAC, 10A/240VAC, QC TERMINAL

FAN – OUTDOOR

This is a typical illustration. The unit in the field may not appear exactly as shown

ORDER IRT00017)
RNG01005| 3| 2| RING; EXTRUDED FIN, HEAT SINK, 3.00 WIDE, UNRESTRAINED DIM IS 7.20/6.61
MOT18646| 4| 1| MOTOR; AL OD MOTOR, 3 PHASE 0.7 HP, 230V
FAN06091| 5| 1| FAN; BLADE, OD FAN – 26X4XH28/L30 – DUAL SET-SCREW
NUT00009| 6| 1| NUT; .25-20, HEX LOCK
WAS00670| 7| 1| WASHER; .26 ID X .49 OD
WAS00041| 8| 1| WASHER; FLAT, PLAIN, #12 .25 ID X .56 OD, .065 THK, CARBON STL-PLD
BRK00688| 9| 2| BRACKET; CONNECTING, HEAT SINK

TERMINAL BLOCK – CONTROLS (CTB)

75011855
This assembly is a component of the Common Controls Harness

COMMON CONTROLS HARNESS

This is a typical illustration. The unit in the field may not appear exactly as shown

PVC LEADS-INSUL QC

CONTROL PANEL

The parts that appear on this illustration are for all options.
Parts will appear in the Parts List if factory installed.

This is a typical illustration. The unit in the field may not appear exactly as shown

VOLUME
WIR09240| *| 1| WIRE; HARNESS; C/D CAB, PWR, DUAL COMP, W/O INDOOR MOTOR XFMR, INCLUDES CCHTB
CTR01203| 1| 1| CONTACTOR; 2P, 30A, 24V COIL, 30 FLA AT 277V
CNT01405| 2| 1| CONTROL; TEMP, OPEN 65F, CLOSE 55F, SPST
CON00077| 4| 1| CONNECTOR, ELECTRIC GROUND, 14-2 AWG SOLDERLESS
CTR01870| 5| 1| CONTACTOR; 3 POLE, 30 FLA, W/O LUGS, 50/60 HZ, 24V COIL
CTR01870| 6| 1| CONTACTOR; 3 POLE, 30 FLA, W/O LUGS, 50/60 HZ, 24V COIL
BUS00338| 7| 1| BUSHING; SNAP, 2.00 INCH OD X 1.63 ID, MAX PANEL THICKNESS 0.125, BLACK NYLON
CAT00043| 8| 2| CATCH; MAGNETIC SNAP-IN
WIR03277| 10| 1| WIRE; HARNESS, OPTION MODULE GENDER CHANGER. BK, BL, RD WIRES. 4 INCH LENGTH. PPM33
BLK00940| 11| 1| BLOCK; 6 TERMINALS (LVTB)
MOD02554| 13| 1| MODULE; RELIATEL OPTIONS, RTOM
MOD02811| 14| 1| MODULE; RELIATEL REFRIGERATION DUAL CIRCUIT COOL/HP
BRK04176| 16| 1| BRACKET; IGNITION MODULE, 6.56 X 5.00 X 0.38
MOD01298| 16| 1| MODULE; RELIA TEL GAS DUAL STAGE W/CHASSIS GROUND
TER01680| 18| 1| TERMINAL STRIP; .25IN. FASTON
WIR03278| 19| 1| WIRE; HARNESS, SUPPLY AIR TEMPERING, BK WIRE, 3 INCHES LENGTH, RTOM 5J3-1 TO 5J3-2
CNT05176| 20| 1| CONTROL; MONITOR, 3-PHASE LINE, UNIVERSAL 180-632 VAC, PHASE AND LOSS REVERSAL
TRR00825| 21| 1| TRANSFORMER; 75 VA, 208-230V PRI, 24V SEC

REFRIGERATION

75012666 A
OD COIL, COMPRESSORS

RK,BL,BK)
WIR03439| *| 1| WIRE; HARNESS, COMPRESSOR, 14 AWG, CC2, 62 IN LENGTH (3 WIRE- RK,BL,BK)
RTR00990| 2| 4| CLIP; MICROCHANNEL COIL MOUNTING
SUP06051| 3| 1| SUPPORT; REAR, BETWEEN UNIT BASE AND COIL, POLYPROPYLENE, 24.96 X 2.83
CAP00072| 4| 1| CAP; VALVE, SEAL, .25 FFL
SET00819| 4| 1| SEAT; SADDLE MOUNT ASSEMBLY
STM00803| 4| 1| STEM; SADDLE MOUNT, VALVE CORE, BRASS, .344 DIA X 1.29 SCHRAEDER TYPE FITTING (TO INCLUDE 5 PIECES)
SWT03402| 5| 1| SWITCH; HIGH PRESSURE, BRAZED, OPENS AT 650 PSIG, CLOSES AT 550 PSIG, 61 INCH WHITE LEADS
CAP00072| 6| 1| CAP; VALVE, SEAL, .25 FFL
SET00819| 6| 1| SEAT; SADDLE MOUNT ASSEMBLY
STM00803| 6| 1| STEM; SADDLE MOUNT, VALVE CORE, BRASS, .344 DIA X 1.29 SCHRAEDER TYPE FITTING (TO INCLUDE 5 PIECES)
THT02760| 7| 1| THERMOSTAT; WITH CLIP, .5/.625 TUBE, 72″ BLACK WIRES, SPST, 230F OPEN, 180F CLOSE
SWT03623| 8| 1| SWITCH; LOW PRESSURE CUTOUT, 250 OPEN, ACTUATION PRESSURE 55 +/- 5, RESET PRESSURE 35 +/- 5
WIR04406| 8| 1| WIRE; HARNESS, LOW PRESSURE SWITCH, 42 IN LENGTH, BLUE WIRES, CIR 1
CAP00072| 9| 1| CAP; VALVE, SEAL, .25 FFL
SET00819| 9| 1| SEAT; SADDLE MOUNT ASSEMBLY
STM00803| 9| 1| STEM; SADDLE MOUNT, VALVE CORE, BRASS, .344 DIA X 1.29 SCHRAEDER TYPE FITTING (TO INCLUDE 5 PIECES)
COM10212| 10| 1| COMPRESSOR; SCROLL, SXA061B3BPZ, 5.0 TON, 200-230/60/3, R410A
ISR00007| 11| 8| ISOLATOR; VIBRATION
NUT00355| 11| 8| NUT; HEX, LOCK, 5/16IN.-18
HTR06511| 12| 1| HEATER; CRANKCASE, 70W, 230V, 6.5 DIA, 65/46 IN LEAD LENGTHS
CAP00072| 13| 1| CAP; VALVE, SEAL, .25 FFL
COR00006| 13| 1| CORE; VALVE PORT, .79 LENGTH, .206-36 UNS 2A THD
VAL01483| 13| 1| VALVE; BODY, .44-20 THD X .25 ODS, STRAIGHT, BRASS, LESS CORE
HTR03908| 14| 1| HEATER; CRANKCASE, 40W, 230V, 6.5 DIA, 70 IN LEAD LENGTHS
CAP00072| 15| 1| CAP; VALVE, SEAL, .25 FFL
COR00006| 15| 1| CORE; VALVE PORT, .79 LENGTH, .206-36 UNS 2A THD
VAL01483| 15| 1| VALVE; BODY, .44-20 THD X .25 ODS, STRAIGHT, BRASS, LESS CORE
COM10069| 16| 1| COMPRESSOR; SCROLL, SXA039B3BPZ, 3.25 TON, 200-230/60/3, R410A
DHY01511| 17| 2| DRIER; FILTER, LIQUID LINE, 5/16 ODM INLET X 5/16 ODF OUTLET, 8 CU INCH
SWT03173| 18| 1| SWITCH; LOW PRESSURE CUTOUT, 250 OPEN, ACTUATION PRESSURE 41 +/- 4, RESET PRESSURE 25 +/- 4
WIR04407| 18| 1| WIRE; HARNESS, LOW PRESSURE SWITCH, 55 IN LENGTH, YELLOW WIRES, CIR 2
CLP01073| 19| 2| CLIP; BULB (RED)
THT02761| 20| 1| THERMOSTAT; WITH CLIP, .5/.625 TUBE, 72″ RED WIRES, SPST, 230F OPEN, 180F CLOSE
SWT03403| 21| 1| SWITCH; HIGH PRESSURE, BRAZED, OPENS AT 650 PSIG, CLOSES AT 550 PSIG, 61 INCH ORANGE LEADS
CAP00072| 22| 1| CAP; VALVE, SEAL, .25 FFL
SET00819| 22| 1| SEAT; SADDLE MOUNT ASSEMBLY
STM00803| 22| 1| STEM; SADDLE MOUNT, VALVE CORE, BRASS, .344 DIA X 1.29 SCHRAEDER TYPE FITTING (TO INCLUDE 5 PIECES)

HEAT EXCHANGER

This is a typical illustration. The unit in the field may not appear exactly as shown

0.125 ID
CLP00940| 6| 1| CLIP; STATIC, RETAINER, .80 X .56 X .022
INS02777| 7| 1| INSULATION; COLLECTOR COVER, 18.75 X 13.48 X 0.34, ALUMINUM/SILICONE
GKT03926| 8| 1| GASKET; HEAT EXCHANGER VESTIBULE, FIBERGLASS REINFORCED, 19.69 X .125
ROD01137| 9| 1| ROD; SUPPORT, 20 INCHES

BURNER

This is a typical illustration The unit in the field may not appear exactly as shown

10A/240VAC, QC TERMINAL
WIR08872| *| 1| WIRE; HARNESS, GAS VALVE ADAPTER, BR,BL,BR WIRES, 5 INCH LENGTH, 3 PIN CONNECTOR
MFD00995| 1| 1| MANIFOLD; GAS, 3/4/X 5 BURNER
VAL08750| 2| 1|

• VALVE; GAS, NATURAL, 2 STAGE, 24 VAC, 50/60 HZ, .4 AMP REDUNDANT, INLET OUTLET 3/4 X 3/4-14 NPT, MAX OP PRESSURE .5 PSIG

ELL00030| 3| 1| ELBOW; .75, 90 DEG ST, 150# MI
CNT03666| 4| 1| CONTROL; DIFFERENTIAL PRESSURE SWITCH, ROTATED 180 DEG, SPST, SNAP ACTING CONTACTS, NO, 5 AMP RESISTIVE AT 24 VAC
TUB10506| 5| 1|

• TUBE; CONNECTING PRESSURE, SILICON RUBBER, .19 ID X
• .06W, 12.50 IN

CLP00940| 6| 2| CLIP; STATIC, RETAINER, .80 X .56 X .022
WEL00848| 7| 1|

• WELL; BULB, TAP, STATIC, 1.0 LENGTH X 0.50 OD X 0.281 OD X
• 0.125 ID

FAN04216| 8| 1| FAN; 2 SPEED COMBUSTION AIR BLOWER, 1/15 HP MOTOR, 208- 230/50-60/1, 2800/3350 RPM, .50/.42 AMPS, WHEEL SIZE 4.72 DIA OD
DUC01040| 9| 1| DUCT; FLUE EXHAUST, ALUMINUM COATED WELDED STEEL TUBING
GKT03850| 10| 1| GASKET; COMBUSTION BLOWER
CNT04671| 11| 1| CONTROL; LIMIT, 190F, AUTOMATIC RESET, SPST, NC, 15A/120VAC, 10A/240VAC, QC TERMINAL
IGN00114| 12| 1| IGNITOR; ELECTRODE, 57 IN LEAD
BRK04324| 13| 1| BRACKET; IGNITOR AND FLAME SENSOR, 15.3 X 1.1
SEN00297| 14| 1| SENSOR; FLAME
SWT02649| 15| 1| SWITCH; FLAME ROLLOUT, 240F, OPENS ON TEMP RISE, MANUAL RESET, SPST, 25A/240V QC TERMINAL
BRK04320| 16| 1| BRACKET; GAS 5-BURNER SUPPORT, 8.50 X 2.53 X 15.16
BNR01071| 17| 5| BURNER; 0.60 ID INSHOT BURNER, 0.036 THK 304 STAINLESS STEEL
ORF01342| 18| 5| ORIFICE; GAS, SPUD, 3.3 MM DIA

INDOOR COIL

This is a typical illustration. The unit in the field may not appear exactly as shown

ADJUSTABLE, R410A, 127.0 PSIG
VAL10371| 8| 1| VALVE; EXPANSION, 4 TON, 3/8 ODF IN X 1/2 ODF OUT, NON- ADJUSTABLE, R410A, 124.8 PSIG
BRK03938| 9| 1| BRACKET; FILTER CHANNEL, 50.50 LENGTH
BOF01684| 10| 1| BLOCKOFF; INDOOR COIL, FRONT, 40.6 X 5.5
Part No.| Reference No.| Quantity| Description
---|---|---|---
ASYSTAT712B| | 1| SENSOR; CO2 SENSING KIT; WALL MOUNTED (ASYSTAT712B)
ASYSTAT714B| | 1| SENSOR; CO2 SENSING KIT; DUCT MOUNTED (ASYSTAT714B)
BAYABRD001C| | 1| KIT; ACCESSORY, OPTIONS BOARD (BAYABRD001CA)
BAYBARM011A| | 1| DAMPER; BAROMETRIC RELIEF (BAYBARM011AB)
BAYBCIR001A| | 1| KIT; FIELD INSTALLED BCI (BAYBCIR001A)
BAYCO2K101A| | 1| KIT; WALL MOUNT CO2 SENSOR KIT
BAYCO2K103A| | 1| KIT;DUCT MOUNT CO2 SENSOR KIT
BAYCURB043A| | 1| CURB; ROOFCURB (BAYCURB043AB)
BAYDFPS004A| | 1| KIT; FAN FAILURE SWITCH (BAYDFPS004AB). (OPTIONS BOARD KIT09433-BAYABRD001CA MUST BE INSTALLED IN THE UNIT FOR THIS ACCESSORY TO OPERATE).
BAYDMPR054A| | 1| DAMPER; RELIATEL, 0-50 PERCENT MOTORIZED OUTSIDE AIR DAMPER (BAYDMPR054A)
BAYDMPR056B| | 1| DAMPER; 0-50% MANUAL OUTSIDE AIR DAMPER (BAYDMPR056BA)
BAYECON087A| | 1| ECONOMIZER; RELIATEL, 0-100 PERCENT DRY BULB (BAYECON087A)
BAYECON704A| | 1| ACCESSORY; LOW LEAK ECONOMIZER, FOR C/D/E CABINETS WITH RELIATEL CONTROLS (SEE ACC-SVN177 FOR MODELS)
BAYENTH005A| | 1| KIT; REFERENCE ENTHALPY (BAYENTH005A)
BAYENTH006B| | 1| KIT; COMPARATIVE ENTHALPY (BAYENTH006B)
BAYHAKT010E| | 1| KIT; ACCESSORY, HIGH ALTITUDE
BAYHSDR012A| | 1| KIT; HIGH STATIC DRIVE (BAYHSDR012AA)
BAYICSI003A| | 1| BOARD; ACCESSORY, RELIATEL COMMUNICATIONS INTERFACE BOARD (BAYICSI003AD)
BAYLOAM020B| | 1| CONTROL; EVAPORATOR DEFROST KIT (FROSTAT) (BAYLOAM020BB). (OPTIONS BOARD KIT09433-BAYABRD001CA MUST BE INSTALLED IN THE UNIT FOR THIS ACCESSORY TO OPE
BAYLPKT029C| | 1| KIT; LP CONVERSION (BAYLPKT029C)
BAYLTCI002B| | 1| KIT; RELIATEL COMMUNICATIONS INTERFACE THAT INCORPORATES LONTALK PROTOCAL (BAYLTCI002BB)
BAYPWRX026A| | 1| KIT; POWER EXHAUST, 208/230V (BAYPWRX026A)
BAYQACB011A| | 1| CURB; ADAPTA CURB (BAYQACB011AA), TRANSITIONS BAYCURB022B, 83.50 X 49.375
BAYQACB012A| | 1| CURB; ADAPTA CURB (BAYQACB012AA), TRANSITIONS BAYCURB025B, 90.50 X 60.625
BAYQACB013A| | 1| CURB; ADAPTA CURB (BAYQACB013AA), TRANSITIONS BAYCURB026B, 103.375 X 68.125
BAYQACB114A| | 1| QUICK ADAPTER ROOF CURB
BAYRTEM001A| | 1| RELIATEL ECONOMIZER LOGIC MODULE
BAYSENS050A| | 1| WIRELESS ZONE SENSOR
BAYSENS250A| | 1| CO2 SENSOR
BAYSENS251A| | 1| SENSOR; CO2 WALL MOUNT (BAYSENS251A)
BAYSENS924A| | 1| SENSOR, TOUCH SCREEN, PROGRAMMABLE SPACE, RELIATEL
BAYSTAT023A| | 1| RESISTOR; REMOTE POTENTIOMETER
BAYTUBE400A| | 1| DISCHARGE AIR SENSING KIT; GAS HEAT
BAYVNOR001B| | 1| KIT; VENTILATION OVERIDE (BAYVNOR001BB) (OPTIONS BOARD KIT09433-BAYABRD001CA MUST BE INSTALLED IN THE UNIT FOR THIS ACCESSORY TO OPERATE).
PLT04561| | 1| PLATE; WALL COVER PLATE ASSEMBLY (BAYMTPL110A)
SEN00278| | 1| SENSOR; THERMISTOR PROBE, -40 DEG C TO 65 DEG, STRIPPED LEADS (BAYSENS016AA)
SEN01447| | 1| SENSOR; ZONE, ROOM SENSOR W/TEMP. ADJUSTMENT WITH OVERRIDE AND CANCEL BUTTONS, 10K, DIAL, OCCUPIED (BAYSENS074AA)
SEN01448| | 1| SENSOR; ZONE, REMOTE ROOM SENSOR, 10K (BAYSENS077AA)
SEN01450| | 1| SENSOR; ZONE, ROOM SENSOR W/ OVERRIDE AND CANCEL BUTTONS, 10K, OCCUPIED (BAYSENS073AA)
SEN01513| | 1| SENSOR; ZONE; DUAL SETPOINT MANUAL OR AUTO CHANGOVER, TWO SET FAN SYSTEM (BAYSENS108AA)
SEN01515| | 1| SENSOR;ZONE SINGLE SETPOINT MANUAL CHANGEOVER, SET FAN SYSTEM, COOL/OFF/HEAT (BAYSENS106A)
Part No.| Reference No.| Quantity| Description
---|---|---|---
SEN01522| | 1| SENSOR; ZONE, DUAL SETPOINT MANUAL OR AUTO CHANGEOVER W/SYSTEM FUNCTION LIGHTS TWO SET FAN SYSTEM, LED (BAYSENS110A)
SEN01577| | 1| SENSOR; PROGRAMMABLE ZONE, AUTOMATIC OR MANUAL CHANGEOVER W/ SYSTEM LIGHTS TRANE (BAYSENS119AA)
SEN01665| | 1| SENSOR; DUAL SETPOINT, W/FAN CONTROL – AUTO/HIGH (BAYSENS135A)
TOL00099| | 1| TOOL; RESISTANCE DECADE BOX

MODEL NUMBER DESCRIPTION

75012767
DX Cooling/ DX Cooling, Gas Heat/ Pkg Heat Pump

Example Model Number:
YSC092H3RZAOOC6C2A1AOOODEA11AD1

Digit 17 – Condenser Coil Protection

• O = Standard Coil
• 1 = Standard Coil with Hail Guard
• 2 = Black Epoxy Condenser Coil Guard
• 3 = Black Epoxy Condenser Coil with Hail Guard
• 4 = CompleteCoat Condenser Coil
• 5 = CompleteCoat Condenser Coil with Hail Guard

Digit 18 -Through the Base Option

• 0 = No Through-the-Base Provisions
• A = Through-the-Base Electric
• B = Through-the-Base Gas Piping
• C = Through-the-Base Electric and Gas Piping

Digit 19 – Disconnect/Circuit Breaker

• 0 = No Disconnect/No Circuit Breaker
• 1 = Unit Mounted Non-Fused Disconnect
• 2 = Unit Mounted Circuit Breaker

Digit 20 – Convenience Outlet

• 0 = Convenience Outlet
• A= Unpowered Convenience Outlet
• B = Powered Convenience Outlet

Digit 21 – Communications Options

• O = No Communications Interface
• 1 = Trane® Communications Interface
• 2 = LonTalk® Communications Interface
• 6 = BACnet® Communications Interface
• 7 = Air-Fi™ Wireless Communications

Interface

• Digit 22 – Refrigeration System Option
• O = Standard Refrigeration System
• Digit 23 – Refrigeration Controls
• O = Without Refrigeration Controls 1 = Frostat™

Digit 24 – Smoke Detector

• O = No Smoke Detector
• A = Return Air Smoke Detector
• B = Supply Air Smoke Detector
• C = Supply and Return Air Smoke Detectors
• D = Plenum Smoke Detector

Digit 25 – System Monitoring Controls

• O = Standard Monitoring System
• 1 = Clogged Filter Switch
• 2 = Fan Failure Switch
• 3 = Discharge Air Sensing Tube
• 4 = Clogged Filter Switch and Fan Failure Switch
• 5 = Clogged Filter Switch and Discharge Air Sensing Tube
• 6 = Fan Failure Switch and Discharge Air Sensing Tube
• 7 = Clogged Filter Switch, Fan Failure Switch and Discharge Air Sensing Tube
• A = Condensate Drain Pan Overflow Switch
• B = Clogged Filter Switch and
• Condensate Drain Pan Overflow Switch
• C = Fan Failure Switch and
• Condensate Drain Pan Overflow Switch
• D = Discharge Air Sensing Tube and Condensate Drain Pan Overflow Switch
• E = Clogged Filter Switch, Fan Failure Switch and Condensate Drain Pan Overflow Switch
• F = Clogged Filter Switch, Discharge Air Sensing
• Tube and Condensate Drain Pan Overflow Switch
• G = Fan Failure Switch, Discharge Air Sensing
• Tube and Condensate Drain Pan Overflow Switch
• F = Clogged Filter Switch,Fan Failure Switch,
• Discharge Air Sensing Tube and
• Condensate Drain Pan Overflow Switch

Digit 26 – System Monitoring Controls

• O = No Monitoring Controls
• A = Demand Control Ventilation (CO ,l
• B = Low Leak Economizer with FDD (Fault Detection & Diagnostics)
• C = FDD (Fault Detection & Diagnostics) with DCV (Demand Control Ventilation)

Digits 27 – Unit Hardware Enhancements

• O = No Enhancements
• 1 = Stainless Steel Drain Pan

Digit 31 – Advanced Unit Controls

• O = Standard Unit Controls
• 1 = Human Interface

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