Carrier 040-420 Example 8 Setting Time of Day Day of Week, Demand Limiting, MAX Demand Kimax =

Page 44

MAX DEMAND KIMAX) = 90

DEMAND LlMlT SIGNAL (4-20MA INPUT)

Fig. 8 - 4-20 mA

Reading and Changing Time Displav - Time is entered and displayed in 24-hour time. The day of the week is en- tered as a number.

1 = Mon, 2 = Tue, 7 = Sun, etc.

m Kev is used as the colon when entering time. See Ex-

I

ample 8.

Example 8 - Setting Time of Day and

Day of Week

KEYPAD

 

DISPLAY

COMMENTS

ENTRY

 

RESPONSE

 

 

 

 

 

 

 

 

 

 

 

Time

display sub-

 

TIME

function of set point

 

 

 

function

 

 

MON 1600

Current setting is

 

 

Monday, 4:00 p.m

 

 

 

New setting of

 

 

TUE 13 05

Tuesday, I:05 p m

 

 

is entered

 

 

 

 

 

 

and

displayed

 

 

JAN 01 90

Current date is

 

 

Jan.

1, 1990

 

 

 

 

 

 

New setting

 

 

APR 15 90

April

15, 1990

 

 

is entered

 

 

 

 

 

 

and

displayed

 

 

 

 

 

SERVICE FUNCTION - This function allows the techni- cian to view and input configuration data. Factory config- uration data, field configuration data and service configu- ration data may be viewed or entered through the keypad and display module. See Table 9 for a complete listing of configurable items. Whenever a processor module is re- placed in the field, the complete list of configuration codes must be entered.

Demand Limiting

Logging On/Longing Off - The service function is pass- word protected. Therefore, to gain entry to this function,

this password must be entered. Pressing mlrim m

allows the technician to view, change or enter configura- tion codes. To log off, perform the following keystrokes:

m biF]H ~The service function is once again pass- word protected.

Software Information - Fi F/VI displays the version

number of the software that resides in the processor mod-

ule. Press m a second time to display the language op- tions that are available in the field configuration group.

T h e r;lF[ a n d2 SRVCfirIsu uricb f ionst are summarized in

Table 11 s

Factorv Configuration Codes -mF[ allows entry into

the factory configuration subfunction. Under this subfunc- tion, there are 6 groups of configuration codes that are down- loaded at the factory. Each group is made up of 8 digits. If processor module is replaced in the field, these 6 groups of configuration codes must be entered through the keypad and display module. Factory configuration codes (groups 1 through

6)that apply to the particular Flotronic’” II chiller being serviced are found on a label diagram located inside the control box cover. See Table 12 for a summary of factory configuration subfunction keystrokes.

44

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Contents Contrc Unit Sizes and Modular Combinations Unit ModelKeypaddisplay Ground Fault Interrupter Source PSIRELAY, B FieldLOCAL/ENABLE-STOP-CCN Switch Positions and Operation Compressor Protection Control Module CpcsThermistor and Transducer Locations ThermistorsCapacity Control StepsLoading Sequence a Loading Sequence B Unit Control StepsLoading Sequence a Loading Sequence B Unit Capacity Control Steps, 040-070 cant060A\~**Hz FBI Capacity Control Steps, 040-070 cantOy&ya A4l&pi’ Aiti08Aqy,y Steps BP’Loading Loading Sequence B Unit Control Altt Bitt Wtf2Z$’Altt Loading Sequence a Loading Equence B Unit$-t&Z3 Amrox’tt Alt,Blv Displacement Compressors UWrW Arwox A2.p $#l 110 50 HzLoading Sequence a Quence B Unit Control Equence B Displacement Compressors MvroxLoading Equence a Awrox Drt,t 130, 24OA130,24OA 130, 240AAttll’ Loading Equence a UnitLoading Sequence a Sequence B Unit A2.pT3g $$V LOAD11 Control Size StepsLoadin Sequence B Unit Displacement Compressors UVvW PWprox 8514wB2,B3 Al% Al’,BILoading Sequence B Unit Loac \IG Sequence a Loading Sequence B Unit 30GT Displacement Compressors AwoxCapacity Control Steps, 225, 250,280 30GT Capacity Control Steps, 225, 250,280 cantLoac Capacity Control Steps, 225, 250, 280 cant 2501G Sequence a Loading Sequence B Unit ControlCondenser Fan Sequence FAN Arrangement FAN Numbers Contactor ControlledCondenser Fan Sequence cant FAN Arrangement FAN Numbers~jACToR 30GT250 60 HzKeypad and Display Module Also Called Hsio Keypad and Display Module UsageAccessing Functions and Subfunctions Functions and SubfunctionsFunctions Operation Keypad Display Description Entry ResponseKeypad Directory Keypad Directory cant Status cant Subfunction Keypadentry Display CommentPressure AnalogSubfunction Outputs Display Subfunction Keypad Entry Display Comment OutputsOutputs HgbraKeypad Directory cant Test cant Subfunction Keypad Entry Display Comment OverrideClock Select QzqKeypad Directory Schedule cant Keypad Directory cant Service cord Keypad Directory cant Example 1 Reading Alarm Codes Operationat and Mode Display CodesKeypad Display Local on Cool Alarms Modes Local on M O D EExample 2 Reading Current Operating Modes Keypad Display Comments Entry Response Example 3 Using Test FunctionExample 4 Reading and Changing Chilled Water Set Point Example 5 Using Return Water Temperature Reset Keypad Display CommentsCRST2 CrstiExample 6 Changing Reset Type Reset Reference Temperature Outdoor AIR 1OR Space TempEKE Ppiq Keypad Display Entry ResponseFLD CFG Ertyp Lstyp Demand MAX Demand Kimax = Example 8 Setting Time of Day Day of WeekDemand Limiting 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 Switch CGFCompressor Contactor Relay SNBFig. IOD 24-V Safety Circuit Wiring 225, 250, and 280 Units Electronil c Expansion Valve EXV Page Thermistor and Pressure Transducer Locations Associated Modular Units Refrigerant Temperature Sensor T7, T8 040-210Suction 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 Circuit Circuit B Or2 30GN190-210 3OGT225,250,280 Standard and Accessory Unloaders1NO. of Accessory Accessory Unloader Control Wiring 080-110 SO/SO Hz and 130 60 HzHgbpr TLNContactor Switch Circuit Breaker Transformer LmyTEF4Module STAGE2Module J7-15Thermistor 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.

One of the main features of the Carrier 040-420 is its energy efficiency. The unit utilizes advanced compressors and a high-efficiency heat exchanger, which work together to minimize energy consumption while maximizing performance. This is crucial in today’s energy-conscious environment, as businesses strive to reduce operational costs and their carbon footprint. The unit also boasts a high SEER (Seasonal Energy Efficiency Ratio) rating, making it an attractive option for those looking to lower their utility bills.

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Overall, the Carrier 040-420 stands out as a modern HVAC solution that combines energy efficiency, advanced technologies, and user-friendly features. Its commitment to performance and sustainability makes it an ideal choice for businesses looking to enhance comfort while being mindful of their energy consumption. With its blend of innovation and reliability, the Carrier 040-420 continues to be a preferred option in the commercial HVAC market.
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