Electronic Expansion Valve (EXV) Board —

The 30XW150-325 units have one EXV board. The 30XW350,400 units have one EXV board per circuit. See Fig. 10. The board is responsible for monitoring the suction gas temperature and economizer gas temperature thermistors. The board also signals the main EXV and economizer EXV (ECEXV) motors to open or close. The electronic expansion valve board responds to commands from the MBB and sends the MBB the results of the channels it monitors via the LEN (Local Equipment Network). See below for DIP switch infor- mation. See Tables 6 and 7 for EXV inputs and outputs.

EXV BOARD 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(150-400)

1

2

3

4

5

6

7

8

DIP SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Address:

ON

 

ON

 

ON

 

ON

 

ON

 

ON

 

OFF

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EXV BOARD 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(350,400)

1

 

2

 

3

 

4

 

5

 

6

 

7

8

DIP SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Address:

OFF

 

ON

 

ON

 

ON

 

ON

 

ON

 

OFF

ON

DIP SWITCH

 

L2

100K

C49

 

 

Q5

Q4

 

C25

C39

 

 

 

U6

D15

257-01

 

COMM J4

 

 

 

 

3

2

1

 

 

 

 

-

G

+

 

 

 

 

 

 

R3

L3

D1

 

 

 

 

 

 

TEMP

R2

100

 

100

100

R9

 

 

 

 

 

 

 

 

100K

712

 

 

 

 

 

 

 

C37

U1

L1

D2

 

 

 

U2

C11

 

 

 

 

 

 

 

 

 

 

 

SB

S1

Q7

 

 

 

 

 

 

 

 

 

 

1

ON

C10

2

 

 

3

 

 

4

 

 

5

Q10

Q12

 

6

 

 

7

 

 

8

 

 

 

Q17

Q15

J3

2 1

THB

3

THA

4

5

 

3 4

EXVB

2

J2B

1

 

5

 

4

 

D29

 

 

Q20

Q22

D9

D8

 

 

 

 

 

STATUS

 

SI0

 

 

 

(LEN)

 

 

 

 

 

 

 

 

Q30

Q27

Q25

Q2

 

Q1

 

 

3

EXVA

2

J2A

1

 

L4

U5

U4

D5

C16

C15

D6 D4

Q37 Q42 G2

Q35

Q45

+

C17

MOV1

J1

24VAC

12/11

LOCATION OF SERIAL NUMBER

a30-4216

Fig. 10 — EXV Board

13

Page 13
Image 13
Carrier 30XW150-400 specifications Electronic Expansion Valve EXV Board, DIP Switch, OFF EXV Board, Off

30XW150-400 specifications

The Carrier 30XW150-400 series is a line of water-cooled chillers that exemplifies innovation, efficiency, and reliability in commercial cooling solutions. Designed for medium to large-scale applications, this series is ideal for a variety of settings, including commercial buildings, industrial processes, and chilled water systems.

One of the standout features of the Carrier 30XW series is its efficiency. The chillers utilize advanced variable-speed compressor technology, which allows the units to adapt to varying cooling loads while minimizing energy consumption. This technology not only reduces operational costs but also contributes to better environmental sustainability by lowering greenhouse gas emissions.

The 30XW series chillers are equipped with high-efficiency, scroll compressors that operate quietly and provide significant energy savings. By utilizing enhanced economizer controls, these units can achieve higher efficiency ratings, especially in part-load conditions. The result is an impressive Energy Efficiency Ratio (EER) and Seasonal Energy Efficiency Ratio (SEER), making these units a smart choice for energy-conscious businesses.

In terms of reliability, the Carrier 30XW150-400 series features robust construction and an array of safety and monitoring systems. The units come with advanced diagnostics that help in quickly identifying and addressing any operational issues. This proactive approach ensures reliability and minimizes downtime, which is crucial for maintaining optimal temperature controls in critical environments.

Additionally, the chillers incorporate environmentally friendly refrigerants that comply with the latest regulations, making them a sustainable choice for modern commercial applications. Their compact design allows for flexible installation options, and the integrated control systems provide the ability to optimize performance based on specific building management demands.

User-friendly interfaces and remote monitoring capabilities further enhance the ease of operation, allowing facility managers to have real-time insight into performance metrics and system health. This level of control contributes to better maintenance planning and maximizes the lifespan of the equipment.

In summary, the Carrier 30XW150-400 series of water-cooled chillers combines advanced technology, energy efficiency, and reliable performance, making it an ideal solution for various commercial and industrial cooling needs. With its commitment to innovation and sustainability, Carrier continues to set the standard in the HVAC industry.