Carrier AIRSTREAM 42WKN Installation, Operation And Maintenance Instructions Download Page 29 | Manualshive

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29

Fig. 33 — 42WKN Unit 4-Pipe System with Hot Water Coil and Electro-Mechanical Control Wiring Diagram,

Sizes 18 and 20

AL

—

Alarm Relay

AWG

—

American Wire Gage

CPM

—

Condensate Pump

CW

—

Chilled Water

HTR

—

Hot Water Relay

HW

—

Hot Water

VM

—

Vane Motor

Factory-Installed

Field-Installed

Terminal Block

Component Terminal

Connected Path

1

LEGEND

NOTE: Fan is wired to medium speed as a default. To change the default
fan speed, adjust wiring in the field. Factory-provided electro-mechanical
thermostats are for single speed fan operation only.

A42-4338

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Summary of Contents for AIRSTREAM 42WKN

Page 1: ...TEMPERATURE CONTROL POWER FAILURE BATTERY BACKUP Alarms 34 ELECTRIC HEATER OVERHEAT PROTECTION HIGH CONDENSATE LEVEL ALARM NETWORK OPTION MICROPROCESSOR CONTROLLER 34 35 Master Slave Operation 34 Netw...

Page 2: ...data DANGER Appliances must not be installed where they may be exposed to potentially explosive or flammable atmosphere WARNING Improper installation adjustment alteration service or maintenance can...

Page 3: ...ube Quantity 1 1 1 1 1 1 Face Area sq ft 1 8 1 8 2 8 2 8 5 2 5 2 Nominal Airflow cfm High 350 350 630 700 970 1160 Medium 300 300 530 630 890 970 Low 260 260 500 530 785 890 Discharge 4 way 4 way 4 wa...

Page 4: ...1 8 3 3 4 2 1 16 2 5 8 A A VIEWA A 9 13 16 1 1 8 2 3 4 5 7 8 9 5 10 6 1 CWInlet 2 CWOutlet 3 HWCoil Inlet Optional 4 HWCoil Outlet Optional 5 Branch Duct Opening x3 6 Fresh Air Intake x2 7 Pump Inspe...

Page 5: ...13 16 8 11 16 1113 16 3 1 8 713 16 23 4 VIEWA A A A 2 5 1 4 10 5 6 7 8 9 3 5 3 8 1 CWCoil Inlet 2 CWCoil Outlet 3 HWCoil Inlet Optional 4 HWCoil Outlet Optional 5 Fresh Air Intake x3 6 Branch Duct Op...

Page 6: ...6 4 3 4 7 9 16 913 16 1 5 8 47 8 2 3 4 2 3 4 3 1 8 9 13 16 23 4 5 10 2 5 4 3 1 6 7 9 8 1 CWCoil Inlet 2 CWCoil Outlet 3 HWCoil Inlet Optional 4 HWCoil Outlet Optional 5 Fresh Air Intake x3 6 Branch Du...

Page 7: ...tments and settings being made from a hand held IR transmitter or optional pendant The controls include the following basic components PCB control board Infrared transmitter or optional pendant Infrar...

Page 8: ...Wiring Diagram Sizes 08 and 12 a42 4333 AL Alarm Relay AWG American Wire Gage BAT Battery CPM Condensate Pump CPU Central Processing Unit CW Chilled Water PCB Printed Circuit Board Factory Installed...

Page 9: ...Diagram Sizes 18 and 20 a42 4336 AL Alarm Relay AWG American Wire Gage BAT Battery CPM Condensate Pump CPU Central Processing Unit CW Chilled Water PCB Printed Circuit Board VM Vane Motor Factory Ins...

Page 10: ...Diagram Sizes 33 and 36 a42 4327 AL Alarm Relay AWG American Wire Gage BAT Battery CPM Condensate Pump CPU Central Processing Unit CW Chilled Water PCB Printed Circuit Board VM Vane Motor Factory Ins...

Page 11: ...agram Size 08 and 12 a42 4332 AL Alarm Relay AWG American Wire Gage BAT Battery CPM Condensate Pump CPU Central Processing Unit CW Chilled Water HTR Heat Relay HW Hot Water PCB Printed Circuit Board F...

Page 12: ...zes 18 and 20 AL Alarm Relay AWG American Wire Gage BAT Battery CPM Condensate Pump CPU Central Processing Unit CW Chilled Water HTR Heat Relay HW Hot Water PCB Printed Circuit Board VM Vane Motor Fac...

Page 13: ...izes 33 and 36 a42 4328 AL Alarm Relay AWG American Wire Gage BAT Battery CPM Condensate Pump CPU Central Processing Unit CW Chilled Water HTR Heat Relay HW Hot Water PCB Printed Circuit Board VM Vane...

Page 14: ...r Control Wiring Diagram Sizes 08 and 12 A42 4335 AL Alarm Relay AWG American Wire Gage BAT Battery CPM Condensate Pump CPU Central Processing Unit HW Hot Water PCB Printed Circuit Board VR Valve Rela...

Page 15: ...Control Wiring Diagram Sizes 18 and 20 A42 4339 AL Alarm Relay AWG American Wire Gage BAT Battery CPM Condensate Pump CPU Central Processing Unit PCB Printed Circuit Board VM Vane Motor VR Valve Rela...

Page 16: ...ol Wiring Diagram Sizes 33 and 36 A42 4329 AL Alarm Relay AWG American Wire Gage BAT Battery CPM Condensate Pump CPU Central Processing Unit HW Hot Water PCB Printed Circuit Board VM Vane Motor VR Val...

Page 17: ...ill operate the air vanes Med Large cassettes only OFF Pressing this button will switch the unit off TRANSMIT INDICATOR This symbol will flash when the system settings are transmitted MODE INDICATOR H...

Page 18: ...oor fan on cooling off and heating on Unit on timer operation off indoor fan on check main PCB battery Unit on timer operation on indoor fan on cooling and heating off Unit on timer operation on indoo...

Page 19: ...ble 2 Table 2 Ceiling Opening Dimensions A cardboard template for ceiling cutout and rod positions is included with the unit Positioning the Electro Mechanical Thermo stat In addition to positioning t...

Page 20: ...lation is pre cut to aid location and removal of the relevant section Rub hand across surface of insula tion to reveal exact location of knockout 3 Remove the metal knockout from the chassis 4 Attach...

Page 21: ...erminal strip 1 Push a small flat head screwdriver into the square hole on the terminal Press firmly until the screwdriver hits the back stop and opens the terminal See Fig 25 2 Remove approximately 3...

Page 22: ...Wire Gage CPM Condensate Pump CW Chilled Water Factory Installed Field Installed Terminal Block Component Terminal Connected Path 1 LEGEND NOTE Fan is wired to medium speed as a default To change the...

Page 23: ...age CPM Condensate Pump CW Chilled Water VM Vane Motor Factory Installed Field Installed Terminal Block Component Terminal Connected Path 1 LEGEND NOTE Fan is wired to medium speed as a default To cha...

Page 24: ...age CPM Condensate Pump CW Chilled Water VM Vane Motor Factory Installed Field Installed Terminal Block Component Terminal Connected Path 1 LEGEND NOTE Fan is wired to medium speed as a default To cha...

Page 25: ...AWG American Wire Gage CPM Condensate Pump VR Valve Relay Factory Installed Field Installed Terminal Block Component Terminal Connected Path 1 LEGEND NOTE Fan is wired to medium speed as a default To...

Page 26: ...rican Wire Gage CPM Condensate Pump VM Vane Motor VR Valve Relay Factory Installed Field Installed Terminal Block Component Terminal Connected Path 1 LEGEND NOTE Fan is wired to medium speed as a defa...

Page 27: ...rican Wire Gage CPM Condensate Pump VM Vane Motor VR Valve Relay Factory Installed Field Installed Terminal Block Component Terminal Connected Path 1 LEGEND NOTE Fan is wired to medium speed as a defa...

Page 28: ...ondensate Pump CW Chilled Water HTR Hot Water Relay HW Hot Water Factory Installed Field Installed Terminal Block Component Terminal Connected Path 1 LEGEND NOTE Fan is wired to medium speed as a defa...

Page 29: ...te Pump CW Chilled Water HTR Hot Water Relay HW Hot Water VM Vane Motor Factory Installed Field Installed Terminal Block Component Terminal Connected Path 1 LEGEND NOTE Fan is wired to medium speed as...

Page 30: ...te Pump CW Chilled Water HTR Hot Water Relay HW Hot Water VM Vane Motor Factory Installed Field Installed Terminal Block Component Terminal Connected Path 1 LEGEND NOTE Fan is wired to medium speed as...

Page 31: ...ither one of the 2 net work terminals marked The pendant connector and network terminal positions are illustrated in Fig 4 PRE START UP See the start up sheet example in Fig 37 A start up sheet is sup...

Page 32: ...r cooling 8 Where fitted check the operation of the hot water valve or the electrical heat elements by switching the system to the heating mode and forcing a call for heat 9 Allow chilled water to ent...

Page 33: ...o switch the unit on and transmit the new system settings Setting the Current Time 1 Press CLK TIMER button once CLOCK SET should begin flashing in the time display 2 Press either or button within the...

Page 34: ...es normal power outag es With no power the battery will last up to three months When the battery requires replacing the cool and heat status LEDs on the IR receiver will flash at 1 second intervals Al...

Page 35: ...ecommended Spares It is recommended that one complete set of air filters be kept on hand for use as needed DISASSEMBLY PROCEDURE Fan Removal 1 Unclip the grille catches and remove the grille s from th...

Page 36: ...a suitable container 4 Remove the self tapping screws securing the 2 insulated metal condensate tray support channels and pull the channels away from the condensate tray Pull the conden sate tray com...

Page 37: ...ities in every section of this trouble shooting guide first Replace the microprocessor only after all other avenues of investigation are exhausted Fans Will Not Run Loose wire Check all fan wire conne...

Page 38: ...to unit Faulty valve actuator Check actuator by manually opening and closing valve replace if faulty Faulty heater relay Check signals to relay and check action of relay contacts Replace relay or PCB...

Page 39: ...purchase order number Racine WI 53403 2552 1500 DeKoven Avenue n a n aA kW n a Electric Heat 500 CHARGE 1 QTY Maximum Discharge Temp 125 F Clearance to Combustibles 0 0 5 FIELD FACTORY CHARGE 0 LB TYP...

Page 40: ...ump Assembly Shown Inverted 9 Fan Motor Assembly 10 Coil Return Air Sensors Microprocessor Only 11 Grille 12 Label DESCRIPTION 13 Air Deflector Vanes 4 14 Filter 15 Fascia Assembly 16 Receiver Micropr...

Page 41: ...ondensate Tray Support 5 High Level Switch Shown Inverted 6 Condensate Pump Shown Inverted 7 Fan and Motor Assembly 8 Fan Inlet Ring 9 Grille 10 Infrared Receiver DESCRIPTION 11 Vane 12 Vane Motor Ass...

Page 42: ......

Page 43: ......

Page 44: ...ght to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53420008 01 Printed in U S A Form 42WKN 7SI Pg 44 4 13 Replaces 42WKN...

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