DEMAND LIMIT (CCN Loadshed Controlled) — To con- figure Demand Limit for CCN Loadshed control set the De- mand Limit Select (ConfigurationRSETDMDC) to 3. Then configure the Loadshed Group Number (Configura- tionRSETSHNM), Loadshed Demand Delta (Configu- rationRSETSHDL), and Maximum Loadshed Time (ConfigurationRSETSHTM). See Table 27.

The Loadshed Group number is established by the CCN system designer. The ComfortLink controls will respond to a Redline command from the Loadshed control. When the Redline command is received, the current stage of capacity is set to the maximum stages available. Should the loadshed con- trol send a Loadshed command, the ComfortLink controls will reduce the current stages by the value entered for Loadshed Demand delta. The Maximum Loadshed Time is the maximum

length of time that a loadshed condition is allowed to exist. The control will disable the Redline/Loadshed command if no Cancel command has been received within the configured maximum loadshed time limit.

Cooling Set Point (4 to 20 mA) — A field supplied and generated, externally powered 4 to 20 mA signal can be used to provide the leaving fluid temperature set point. Connect the signal to LVT7,8 (+,–). See Table 27 for instructions to enable the function. Figure 22 shows how the 4 to 20 mA sig- nal is linearly calculated on an overall 10 F to 80 F range for fluid types (ConfigurationOPT1FLUD) 1 or 2. The set point will be limited by the fluid (FLUD) type. Be sure that the chilled water loop is protected at the lowest temperature.

 

100

 

 

 

 

 

 

 

 

50% CAPACITY AT 20 mA

 

 

 

 

 

 

 

 

 

 

 

 

(%)

 

 

 

 

 

 

 

 

 

 

 

 

LOAD

80

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ALLOWABLE.MAX

60

 

 

 

 

 

 

 

 

 

 

 

40

100% CAPACITY AT 4 mA

 

75% CAPACITY AT 12 mA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

 

 

0

0

2

4

6

8

10

12

14

16

18

20

 

 

 

 

 

 

DEMAND LIMIT SIGNAL – 4 - 20 mA INPUT

 

 

 

Fig. 21 — 4 to 20-mA Demand Limiting

 

100

 

 

 

 

 

 

 

 

(38)

 

 

 

 

 

 

 

 

90

 

 

 

 

 

 

 

 

(32)

 

 

 

 

 

 

 

 

80

 

 

 

 

 

 

 

 

(27)

 

 

 

 

 

 

 

 

70

 

 

 

 

 

 

 

 

(21)

 

 

 

 

 

MAXIMUM

 

 

 

 

 

 

 

 

SET POINT

 

 

60

 

 

 

 

 

70 F (21.1 C)

 

F (C)

(15)

 

 

 

 

 

 

 

50

 

 

 

 

 

 

 

POINT,

 

 

 

 

 

 

 

(10)

 

 

 

 

 

 

 

40

 

 

 

 

 

 

 

SET

 

 

 

 

 

 

 

(4.4)

 

 

 

 

 

 

 

 

 

 

(FLUD = 1) MINIMUM

 

 

 

 

 

 

 

 

 

 

 

30

 

 

SET POINT 38 F (3.3 C)

 

 

 

 

(-1)

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

(-7)

 

 

 

 

 

 

 

 

10

(FLUD = 2) MINIMUM

 

 

 

 

 

 

 

SET POINT 14 F (-10 C)

 

 

 

 

 

 

(-12)

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

(-17)

 

 

 

 

 

 

 

 

4

6.3

8.6

10.9

13.1

15.4

17.7

20

4 TO 20 mA SIGNAL TO EMM

EMM — Energy Management Module

Fig. 22 — Cooling Set Point (4 to 20 mA)

43

Page 43
Image 43
Carrier 30RAP010-060 specifications To 20-mA Demand Limiting

30RAP010-060 specifications

The Carrier 30RAP010-060 is a series of rooftop air conditioning units designed for effective climate control in commercial applications. Engineered with advanced technologies, these units are known for their reliability, energy efficiency, and ease of installation, making them a suitable choice for a range of settings including offices, retail spaces, and industrial facilities.

One of the standout features of the 30RAP series is its robust construction. Designed to withstand various environmental conditions, these units come equipped with a weather-resistant cabinet and a corrosion-resistant finish. This durability ensures long-term performance and reduced maintenance costs.

Energy efficiency is a significant characteristic of the Carrier 30RAP series. These units utilize advanced technologies such as a high-efficiency compressor and variable speed fans. The inclusion of economizers also contributes to energy savings by allowing the system to take advantage of outdoor air when the conditions are favorable. With high SEER (Seasonal Energy Efficiency Ratio) ratings, the 30RAP units help businesses reduce operating costs while minimizing their environmental footprint.

The 30RAP series is equipped with smart control systems that provide enhanced operational efficiency and comfort. With features such as programmable thermostats and remote access capabilities, building managers can easily monitor and adjust the system to maintain optimal indoor climate conditions. Additionally, the units are compatible with building automation systems, allowing for seamless integration into a larger HVAC network.

The installation process of the Carrier 30RAP010-060 is streamlined thanks to a compact design and lightweight construction, which simplifies the transportation and placement on rooftops. Moreover, the unit's modular components facilitate easy access for maintenance and repairs, minimizing downtime and improving overall reliability.

In summary, the Carrier 30RAP010-060 series stands out for its combination of durability, energy efficiency, and advanced control technologies. It is an ideal solution for businesses seeking reliable climate control systems that balance performance with cost-effectiveness. Whether for new installations or replacements, these rooftop units provide the necessary flexibility and efficiency needed in today’s commercial environments. With strong backing from Carrier, a leader in HVAC technology, the 30RAP series ensures lasting comfort and operational efficiency.