Table 9 - Keypad Directory (cant)

TEST (cant)

During compressor test, compressors start and run for 10 seconds. Compressor service valves and liquid line valves must be open. Energize crankcase heaters 24 hours prior to performing compressor tests.

SUBFUNCTION

KEYPAD ENTRY

2 COMPRESSORS AND UNLOADERS

DISPLAY

COMMENT

 

 

 

 

 

C O M P

 

Compressor and Unloader Test

 

CPA1 X

Test Compressor Al

 

CPA2 X*

Test Compressor

A2T

 

CPA3 X*

Test Compressor

A3t

 

CPA4 X*

Test Compressor

A4t

 

CPBl

X

Test Compressor

Bl

 

CPB2

x*

Test Compressor

B2t

 

CPB3 X*

Test Compressor

B3T

 

CPB4 X*

Test Compressor

B4T

 

ULAl

X

Energize Unloader Al T

 

ULA2

X*

Energize Unloader A2T

 

ULBl X

Energize Unloader Bl t

 

ULB2

X*

Energize Unloader B2t

 

 

 

 

 

 

 

 

 

 

 

SCHEDULE

The Schedule function key CHD is used to configure the occupancy schedule The clock select subfunction can be used for El

unoccupied shutdown or unoccupied setback depending on the cooling set point control configuration. The Schedule function described is for clock 1, which is the internal clock. Password required for all subfunctions except override.

 

SUBFUNCTION

1

 

KEYPAD ENTRY

I

DISPLAY

I

COMMENT

 

 

 

 

 

 

 

 

 

 

 

 

 

1 OVERRIDE

 

 

 

 

 

I

OVRD X

 

 

Number of Override Hrs (0 - 4 Hrs)

 

 

 

 

 

 

 

 

 

 

 

 

For example, to extend current occupied mode for 3 hrs, press:

 

 

 

 

 

 

 

 

 

 

ppii-j

 

OVRD 3

 

 

Extended Occupied Time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 CLOCK SELECT

 

 

 

/qzq

 

CLOCK XX

 

 

Type of Clock Control

 

 

 

 

 

 

 

 

 

 

 

0 = No Clock, 1 = Clock 1 (Internal)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LEGEND

 

 

 

 

 

 

*Must be configured

 

 

- Carrier Comfort

Network

 

 

 

 

tlf applicable.

 

 

 

~~”

- Electronic Expansion Valve

 

 

 

 

 

 

 

 

M O P

- Maximum Operating Pressure

 

 

 

 

 

 

 

 

33

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Image 33
Carrier 040-420 Keypad Directory cant Test cant, Subfunction Keypad Entry Display Comment Override, Clock Select, Qzq
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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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