2 - GENERAL DESCRIPTION

2.1 - General

PRO-DIALOG Plus is a system for controlling units which use reciprocating compressors*:

•Single or dual circuit

•Air or water-cooled condensers

•Non-reversible heat pumps

•Split systems

* At present only air-cooled models are available.

PRO-DIALOG Plus controls compressor start-up and demand limits needed to maintain the desired entering or leaving tem- perature setpoint for water. It automatically sets the position of the electronic expansion valve (if used) to optimise the evapo- rator charge. It controls operation of the fans (on air-cooled units) or water valves (on water-cooled units) to maintain the correct head pressure in each circuit.

Safety circuits are constantly monitored by PRO-DIALOG Plus to ensure safe operation of the unit. PRO-DIALOG Plus also gives access to a Quick Test program covering all inputs and outputs.

All PRO-DIALOG Plus controls can work in accordance with three independent modes:

•Local mode: the machine is controlled by commands from the user interface.

•Remote mode: the machine is controlled by remote contacts (volt-free contacts, analogue signals).

•CCN mode: the machine is controlled by commands from the Carrier Comfort Network (CCN). In this case a data communication cable is used to connect the unit to the CCN communication bus.

The operating mode must be chosen with the Operating Type selection button described in section 4.2.1.

When the PRO-DIALOG Plus system operates autonomously (Local or Remote mode) it retains all of its own control capa- bilities but does not offer any of the features of the CCN network.

2.2 - Abbreviations used

In this manual the circuits are called circuit A and circuit B. The compressors in circuit A are labelled A1, A2, A3 and A4. Those in circuit B are labelled B1, B2, B3 and B4. A1 and B1 are the lead compressors.

The following abbreviations are frequently used:

AI

-

Analogue Input

AO

-

Analogue Output

CCn

-

Operating type: CCN

CCN

-

Carrier Comfort Network.

 

 

This is the Carrier communication network

DI

-

Discrete Input

DO

-

Discrete Output

EXV

-

Electronic Expansion Device

LED

-

Light Emitting Diode

LOFF

-

Operating type: Local off

L-ON

-

Operating type: Local operation

MASt

-

Master unit operating type (master/slave assembly)

RCPM -

Reciprocating Compressor Protection Module

rEM

-

Operating type: by remote control contacts

SCT

-

Saturated disCharge Temperature

SIO

-

Standard Input/Output - internal communication bus

 

 

linking the basic board to the slave boards

SST

-

Saturated Suction Temperature

5

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Carrier 30GK manual General Description, Abbreviations used
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30GK specifications

The Carrier 30GK is a prominent chiller model known for its efficiency and reliability in various commercial and industrial applications. Offering a blend of advanced technology and robust design, the 30GK series caters to diverse cooling needs while maintaining energy efficiency and low operational costs.

One of the standout features of the 30GK is its use of the latest scroll compressor technology. This contributes to its efficient performance, enabling the chiller to operate at optimal levels while minimizing energy consumption. The scroll compressor is known for its quiet operation, which reduces noise pollution, making it an ideal choice for buildings located in noise-sensitive environments.

The 30GK chiller series is equipped with microchannel coil technology, which allows for improved heat exchange efficiency. The microchannel design uses a compact coil structure that enhances refrigerant flow and reduces refrigerant volume, leading to a smaller footprint compared to traditional coil designs. This innovative design not only saves space but also improves the chiller's overall performance.

Another notable characteristic of the Carrier 30GK is its environmental consciousness. The chiller operates using environmentally friendly refrigerants, aligning with modern regulations and sustainability goals. Its design incorporates energy-efficient components that contribute to significant reductions in greenhouse gas emissions, making it suitable for environmentally responsible projects.

Moreover, the 30GK is designed for easy serviceability, with accessible components that simplify maintenance. This feature is particularly important for facility managers seeking to minimize downtime and keep maintenance costs low. The chiller also includes advanced monitoring and control systems, which enable real-time performance tracking and diagnostics, enhancing operational efficiency.

In terms of performance, the 30GK chiller is known for its wide capacity range, making it versatile for various applications. Whether for commercial spaces, industrial processes, or large buildings, the 30GK can meet the cooling demands reliably.

Overall, the Carrier 30GK chiller represents a perfect balance of cutting-edge technology, energy efficiency, and sustainability. Its features make it a leading choice in the market, suited for those looking to invest in high-quality and dependable cooling solutions.
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