Table 9 - Keypad Directory (cant)

STATUS (cant)

SUBFUNCTION

10 OUTPUTS

DISPLAY

OUTPUTS

ALMR X

FRAI X

FRA2 X

FRBI X

FRB2 X

CHWP X*

ULAI X

ULA2 X*

ULBI X

ULB2 X*

EXVA X

EXVB X

HGBA X*

HGBB X

MMA X*

MMB X

COMMENT

Status of Outputs

Alarm Relay K3

Fan Relay Kl

Fan Relay K2

Fan Relay K4

Fan Relay K5

Cooler Water Pump Relay K6 Unloader Al t

Unloader A2T

Unloader Bl t

Unloader B2T

EXVA Percent Open

EXVB Percent Open

Hot Gas Bypass Relay Circuit A

Hot Gas Bypass Relay Circuit B

Motormaster@ A Output Percent

Motormaster B Output Percent

TEST

To use Test function, LOCAL/ENABLE-STOP-CCN switch must be in STOP position To operate a test, scroll to desired test Then, press m to start test. Press m to stop test.

SUBFUNCTION

KEYPAD ENTRY

 

DISPLAY

 

COMMENT

 

 

 

 

 

1 OUTPUTS

 

OUTPUTS

Test Outputs

 

 

 

8 8 8.8.8 8.8.8

Display

Check

 

 

 

ALMR X

Energize

Alarm Relay K3

 

 

 

FRAI

X

Energize Fan Relay Al Kl

 

 

 

FRA2 X

Energize Fan Relay A2 K2

 

 

 

FRBl

X

Energize Fan Relay Bi K4

 

 

 

FRl32

X

Energize Fan Relay 82 K5

 

 

 

CHWP X*

Energize Cooler Water Pump K6

 

 

EXVA X

Enter Desired EXVA Position

 

 

EXVB X

Enter Desired EXVB Position

 

 

HGBRA X*

Energize Hot Gas Bypass Relay A

 

 

HGBRB X*

Energize Hot Gas 8ypass

Relay B

 

 

MMA

X*

Enter Desired Motormaster@

A Output Signal

 

 

MMB

X*

Enter Desired Motormaster B Output Signal

 

 

 

 

 

 

 

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Carrier 040-420 specifications Subfunction Outputs Display, Subfunction Keypad Entry Display Comment Outputs, Hgbra, Hgbrb

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.