Carrier 040-420 specifications Hgbpr, Tln

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130 (50 Hz), 150-210, 225, 250, AND 280 UNITS (and associated modular units)

1.Install control wiring. The minimum wire size for in- stallation is 16 AWC (American Wire Gage). Refer to Fig. 24 and 25 for proper wiring. Open the control box door. Locate unloader relays A and B (URA, URB) in place of the hot gas bypass relays as shown on the com- ponent arrangement diagram on the unit. Mount the re- lays with the field-supplied screws. Be careful not to damage the components and wiring in the area when mount- ing the relays.

2Wire the control side. Wire the URA coil in series be- tween 56-18 and J6- 19 of the 4 IN/4 OUT module with the wires provided. Wire the URB coil in series be- tween J6-21 and J6-22 of the same module with the wires provided.

Locate the black wire in the control harness originating from TRANS labeled HGBPR-A-COM. Connect this wire to the URA terminal COM. Connect the wire labeled HGBPR-A-NO to URA-NO. Connect the wire from URA-NO to TB3-5. For an extra unloader on circuit B, connect the wire labeled HGBPR-B-COM to UR-B- COM, and the wire labeled HGBPR-B-NO to URB- NO. Connect the wire from URB-NO to TB3-6.

3.Wire in the solenoid valves.

NOTE: Wires external to the control box must be run in conduit +

Terminal blocks are provided for easy field wiring. Use one of the isolated ‘/s-in. (22-mm) holes in the side of the compressor electrical box with a strain relief to run the wires to the solenoid coil. Connect URA between TB3-5 and TB3-8. Connect URB between TB3-6 and TB3-8. Check all of the electrical connections for proper location and tightness, and replace and secure the elec- trical box of the compressor,

4.Configure the microprocessor, Once the relays are mounted in the control box, the microprocessor must be config- ured for the unloader option. ‘To do so:

a.Be sure the LOCAL/ENABLE-STOP-CCN switch is in the STOP position.

b.Log into the processor and enter the service func- t i o n u s i n g t h e k e y p a d a n d d i s p l a y m o d u l e .

Type r\ I;;;;E] . The keypad LCD will display

“PASSWORD.” Enter ~~1~~~~, and the keypad LCD will display “LOGGEDON. ”

C, To change the configuration, type 14 H, and the keypad LCD will display “FLD CFG.” Press m

until either “NULA 0” or “NULA I” is displayed (depending on the number of unloaders provided as

standard), Then press m H (for 1 unloader on Al)

or FiFi (for 2 unloaders on compressor Al). The d i s p l a y w i l l n o w r e a d e i t h e r “ N U L A 1 ” o r

‘ ‘NULA 2, ” as appropriate, Press I)I to get to the NULB display, and change this setting in the same manner as with circuit A.

d.Once the configuration is complete, press m Fi, and the keypad LCD will display “LOGGEDON,”

Press @ until the keypad LCD display reads “LOG

OFF.” Press H and the keypad LCD will display “EXIT LOG.”

5 Once the unloader heads are installed, the unit is checked. --for leaks, and the system is prepared for operation per the instructions for the compressor unloader head instal- lation, check the output of the relays using the test func- tion as follows:

a. Press T;1H, and the display will read “COMP.”

b. Press the q to scroll down until the display reads “CPA1 OFF.”

c. Press ENTR , and the compressor should start. 0

d.Press a + , and the compressor should stop.

e.Press c + l until the display reads “ULAl OFF.”

f.Press H , and the solenoid should energize.

g.Press q and the solenoid should deenergize.

h.Use the a and H keys to check the remainder of the unloader coils.

6.Once the check has been performed, return the LOCAL/ ENABLE-STOP-CCN switch to the proper position.

7.Close and secure the control box door.

8.Start the unit and confirm that the chiller operates properly.

 

 

LEGEND

 

 

 

 

COM

-

Communications Bus

 

- Terminal

Block

HGBPR

-

Hot Gas Bypass Relay

TLN

-

Transformer

KB

1

Normally Open

 

-

Unloader

 

Snubber

kl

- Unloader

Relay

Fig. 24 - Flotronic’” II 115/230-V Unloader Wiring, 130 (50 Hz), 150-210, 225, 250, 280

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Contents Contrc Unit Sizes and Modular Combinations Unit ModelRELAY, B Keypaddisplay Ground Fault InterrupterSource PSI FieldThermistor and Transducer Locations LOCAL/ENABLE-STOP-CCN Switch Positions and OperationCompressor Protection Control Module Cpcs ThermistorsLoading Sequence a Loading Sequence B Unit Control CapacityControl Steps Steps060A\~**Hz Capacity Control Steps, 040-070 cantLoading Sequence a Loading Sequence B Unit Oy&ya Capacity Control Steps, 040-070 cantFBI 08Aqy,y AitiA4l&pi’ Steps BP’Loading Loading Sequence B Unit Control Altt Altt BittWtf2Z$’ Loading Sequence a Loading Equence B Unit’tt Amrox$-t&Z3 Loading Sequence a Quence B Unit Control Displacement Compressors UWrW Arwox A2.p $#l 110 50 HzAlt,Blv Loading Equence a Displacement Compressors MvroxEquence B 130,24OA Awrox Drt,t130, 24OA 130, 240AAttll’ Loading Equence a UnitT3g A2.pLoading Sequence a Sequence B Unit $$V LOAD11 Control Size StepsLoadin Sequence B Unit B2,B3 Displacement Compressors UVvW PWprox8514w Al% Al’,BILoading Sequence B Unit Capacity Control Steps, 225, 250,280 30GT Displacement Compressors AwoxLoac \IG Sequence a Loading Sequence B Unit Loac Capacity Control Steps, 225, 250,280 cant30GT 1G Sequence a Capacity Control Steps, 225, 250, 280 cant250 Loading Sequence B Unit ControlCondenser Fan Sequence FAN Arrangement FAN Numbers Contactor Controlled~jACToR Condenser Fan Sequence cantFAN Arrangement FAN Numbers 30GT250 60 HzKeypad and Display Module Also Called Hsio Keypad and Display Module UsageFunctions Accessing Functions and SubfunctionsFunctions and Subfunctions Operation Keypad Display Description Entry ResponseKeypad Directory Pressure Keypad Directory cant Status cantSubfunction Keypadentry Display Comment AnalogOutputs Subfunction Outputs DisplaySubfunction Keypad Entry Display Comment Outputs HgbraClock Select Keypad Directory cant Test cantSubfunction Keypad Entry Display Comment Override QzqKeypad Directory Schedule cant Keypad Directory cant Service cord Keypad Directory cant Example 1 Reading Alarm Codes Operationat and Mode Display CodesExample 2 Reading Current Operating Modes Local on Cool Alarms Modes Local on M O D EKeypad Display Example 4 Reading and Changing Chilled Water Set Point Example 3 Using Test FunctionKeypad Display Comments Entry Response CRST2 Example 5 Using Return Water Temperature ResetKeypad Display Comments CrstiExample 6 Changing Reset Type Reset Reference Temperature Outdoor AIR 1OR Space TempEKE FLD CFG Ertyp Lstyp Demand Keypad Display Entry ResponsePpiq Demand Limiting Example 8 Setting Time of Day Day of WeekMAX Demand Kimax = Factory Configuration Keystrokes Adjustable Field ConfigurationsExample 9 Using the Schedule Function DisplayExample 9 Using the Schedule Function cant Example 10 Holiday Schedule FunctionTypical Stoppage Faults and Reset Types Complete Unit Stoppage Complete unit stopAlarm Codes Action Taken Probable Cause N T R O LPage Page ’ Sl R ’ STnanz Compressor Contactor Relay SwitchCGF SNBFig. IOD 24-V Safety Circuit Wiring 225, 250, and 280 Units Electronil c Expansion Valve EXV Page Thermistor and Pressure Transducer Locations Suction Refrigerant Temperature Sensor T7, T8 040-210Associated Modular Units Pressure Transducer 2i.b Voltage Drop Voltage Resistance DropEqualizer OIL Pressure Suction Pressure Sight Glass Line Transducer Each CompressorControl Modules PSIO, SIO Address SelectorSensor Bus Wiring Communications Processor Module PsioComm Troubleshooting 1NO. of Accessory Standard and Accessory UnloadersCircuit Circuit B Or2 30GN190-210 3OGT225,250,280 Accessory Unloader Control Wiring 080-110 SO/SO Hz and 130 60 HzHgbpr TLNModule Contactor Switch Circuit Breaker TransformerLmyTEF4 STAGE2Thermistor ModuleJ7-15 ElJ7-16Installation Remote Dual Set Point ControlPage Page Copyright 1994 Carrier Corporation

040-420 specifications

The Carrier 040-420 is a highly regarded commercial HVAC unit specifically designed for efficient heating and cooling in medium- to large-sized buildings. Known for its reliability and advanced technology, this system is ideal for a variety of applications ranging from offices to industrial spaces.

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