Carrier 040-420 specifications Installation, Remote Dual Set Point Control

Page 73

&-jQ - 13 a--

-43 -78

S W I T C H

4 IN/4 OUT M O D U L E

CWPl (CWFS) ;-+--y---- --a TB-6

,~,. $$

&

c,: *

,- - m - - - -f-J J7-10

i- - _ _ _ - _-a J7-lf

30GN040-210 AND ASSOCIATED MODULAR UNITS

-- - - 1 TB-11-El

--a-2 TBI1

-0

30GT225,250,280 FLOTRONIC’” II UNITS

T B - Terminal Block

NOTE: The 30GT225,250,280 Flotronic II units require the acces- sory options module for this feature

Fig. 33 - Remote Dual Set Point Control

43 7 6

1 ------ CWP

- - - - - - c3l -rB$J

115/23ovv

cl-

 

 

 

-------_-- __-- 4 T5-3

-t-l

f

30GN040-210 AND ASSOClATED MODULAR UNITS

--v-w 3 TE5 El

WI-- u4 TE5

30GT225,250,280 FLOTRONIC II UNITS

CWP - Chilled Water Pump T B - Terminal Block

NOTE: The maximum load allowed for the chilled water pump circuit is 125 va sealed, 1250 va inrush at 115 or 230 v

Fig. 34 - Chilled Water Pump

 

 

-43 77

 

 

ALARM

SHUTOFF

 

 

S W I T C H

 

I -

- - - -

- - - a - - - 1 TB-3

 

-cl

I

 

 

 

iL

 

------2

T 8 - 3

 

 

c l

 

30GN040-210 AND ASSOCIATED MODULAR UNITS _d--

---- u2 TB-5

30GT225,250,280 FLOTRONIC II UNITS

TB - Terminal Block

NOTE: The maximum load allowed for the alarm circuit is 125 va sealed, 1250 va inrush at 115 or 230 v

Fig. 35 - Remote Alarm

I - - - - - - - - - - - - - -cl2TB-6

30GN040-210 AND ASSOCIATED MODULAR UNITS

- - - - - 7 TB-7-El

- - - - - 8 TE7 u

30GT225,250,280 FLOTRONIC I I UN ITS

CWPI - Chilled Water Pump Interlock

CWFS - Chilled Water Flow Switch (not required - low flow protection is provided by Flotronic II controls)

T B - Terminal Block

NOTE: Contacts must be rated for dry circuit application, capable of reliably switching a 5 vdc, 1 mA to 20 mA load.

Fig. 36 - Interlocks

REPLACING DEFECTIVE

PROCESSOR MODULE

The replacement part number is printed on a small label on front of the PSI0 module. The model and serial num- bers are printed on the unit nameplate located on an exte- rior corner post. The proper software and unit configuration data is factory installed by Carrier in the replacement mod- ule. Therefore, when ordering a replacement processor mod- ule (PSIO), specify complete replacement part number, full unit model number, and serial number. If these numbers are not provided, the replacement module order is config- ured instead as a generic Flotronic’” 11 replacement mod- ule. This requires reconfiguration of the module by the installer.

Electrical shock can cause personal injury, Disconnect all electrical power before servicing.

Installation

1.Verify the existing PSI0 module is defective by using the procedure described in the Control Modules sec- tion on page 64.

2.Refer to Start-Up Checklist for Flotronic II Chiller Sys- tems (completed at time of original start-up) found in job folder. This information is needed later in this

procedure. If checklist does not exist, fill out the ri H

and Fi F\ configuration code sections on a new check- list. Tailor the various options and configurations as needed for this particular installation.

3 . Check that all power to unit is off. Carefully discon- nect all wires from defective module by unplugging the 6 connectors. It is not necessary to remove any of the individual wires from the connectors. Remove the green ground wire.

4 . Remove defective PSI0 by removing its mounting screws with a Phillips screwdriver, and removing the module from the control box, Save the screws for later use.

5 . Use a small screwdriver to set address switches Sl and S2 on the new PSI0 module to exactly match the set- tings on the defective module.

6 . Package the defective module in the carton of the new module for return to Carrier.

7 . Mount the new module in the unit control box using a Phillips screwdriver and the screws saved in Step 4 above.

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Contents Contrc Unit Model Unit Sizes and Modular CombinationsSource PSI Keypaddisplay Ground Fault InterrupterRELAY, B FieldCompressor Protection Control Module Cpcs LOCAL/ENABLE-STOP-CCN Switch Positions and OperationThermistor and Transducer Locations ThermistorsControl Steps CapacityLoading Sequence a Loading Sequence B Unit Control 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’ BP’ StepsLoading Loading Sequence B Unit Control Wtf2Z$’ Altt BittAltt Loading Sequence a Loading Equence B Unit’tt Amrox$-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, 240ALoading Equence a Unit Attll’T3g A2.pLoading Sequence a Sequence B Unit $$V Control Size Steps LOAD11Loadin Sequence B Unit 8514w Displacement Compressors UVvW PWproxB2,B3 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 250 Capacity Control Steps, 225, 250, 280 cant1G Sequence a Loading Sequence B Unit ControlFAN Arrangement FAN Numbers Contactor Controlled Condenser Fan SequenceFAN Arrangement FAN Numbers Condenser Fan Sequence cant~jACToR 30GT250 60 HzKeypad and Display Module Usage Keypad and Display Module Also Called HsioFunctions and Subfunctions Accessing Functions and SubfunctionsFunctions Operation Keypad Display Description Entry ResponseKeypad Directory Subfunction Keypadentry Display Comment Keypad Directory cant Status cantPressure AnalogSubfunction Keypad Entry Display Comment Outputs Subfunction Outputs DisplayOutputs HgbraSubfunction Keypad Entry Display Comment Override Keypad Directory cant Test cantClock Select QzqKeypad Directory Schedule cant Keypad Directory cant Service cord Keypad Directory cant Operationat and Mode Display Codes Example 1 Reading Alarm 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 Keypad Display Comments Example 5 Using Return Water Temperature ResetCRST2 CrstiReset Reference Temperature Outdoor AIR 1OR Space Temp Example 6 Changing Reset TypeEKE FLD CFG Ertyp Lstyp Demand Keypad Display Entry ResponsePpiq Demand Limiting Example 8 Setting Time of Day Day of WeekMAX Demand Kimax = Adjustable Field Configurations Factory Configuration KeystrokesDisplay Example 9 Using the Schedule FunctionExample 10 Holiday Schedule Function Example 9 Using the Schedule Function cantComplete Unit Stoppage Complete unit stop Typical Stoppage Faults and Reset TypesAction Taken Probable Cause N T R O L Alarm CodesPage Page R ’ S ’ SlTnanz CGF SwitchCompressor 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 Suction Refrigerant Temperature Sensor T7, T8 040-210Associated Modular Units Pressure Transducer 2i.b Voltage Resistance Drop Voltage DropLine Transducer Each Compressor Equalizer OIL Pressure Suction Pressure Sight GlassPSIO, SIO Address Selector Control ModulesProcessor Module Psio Sensor Bus Wiring CommunicationsComm Troubleshooting 1NO. of Accessory Standard and Accessory UnloadersCircuit Circuit B Or2 30GN190-210 3OGT225,250,280 080-110 SO/SO Hz and 130 60 Hz Accessory Unloader Control WiringTLN HgbprLmyTEF4 Contactor Switch Circuit Breaker TransformerModule STAGE2J7-15 ModuleThermistor ElJ7-16Remote Dual Set Point Control InstallationPage 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.

Equipped with advanced inverter-driven technology, the Carrier 040-420 allows for precise control of indoor climate conditions. This means that the system can adjust its output according to the actual cooling or heating demand of the space, resulting in enhanced comfort and reduced energy waste. The inverter technology also contributes to quieter operation, allowing for a more pleasant indoor environment.

Another feature that sets the Carrier 040-420 apart is its smart controls. The unit can be integrated with Carrier’s Building Automation Systems, enabling remote monitoring and management. This allows facility managers to optimize energy use and immediately respond to any performance issues. Additionally, the unit is compatible with various control interfaces, making it easy for users to adjust settings or schedule operations according to the building's occupancy patterns.

The robust design of the Carrier 040-420 ensures longevity and durability, even in harsh environmental conditions. Its weatherproof casing protects the internal components, enhancing the unit's performance and reliability over time. Maintenance is simplified with accessible design features, allowing technicians to conduct service checks and repairs without extensive downtime.

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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