Carrier 30RA, 30RH manual Ethylene glycol curve, Pump leakproof, For use with propylene, Glycol

Page 8

30RA/30RH

Water connections

E N G L I S H

Ethylene glycol curve

°C

 

ATTENTION:

mixture

The pump leakproof

components are not suitable

for use with propylene

Freezingtemperatureofwater-ethyleneglycol

glycol.

 

 

 

 

Weight concentration of ethylene glycol in water %

CAUTION:

 

Using water with glycol may

 

make it necessary to change the

 

configuration of the control

 

system.

 

 

Make the plate heat exchanger hydraulic connections with the necessary components, using material which will guarantee that the screwed joints are leakproof.

The typical hydraulic circuit diagram shows a typical water circuit installation in an air conditioning system.

For an application with a water circuit, the following recommendations must be taken into account:

1.The pump must be fitted immediately before of the heat exchanger and after the connection to the system return (unit without hydronic module).

2.It is advisable to install shut-off valves to allow isolation of the most important circuit components, as well as the heat exchanger itself.

These valves (ball, globe or butterfly valves) should produce a minimum loss of charge when they are open.

3.Provide unit and system drains and vents at the lowest system point.

4.Install purges in the higher sections of the installation.

5.Pressure ports and pressure gauges should be installed upstream and downstream of the water pump (unit without hydronic module).

6.Thermometers should be installed in the unit water inlet and outlet.

7.All piping must be adequately insulated and supported.

Installation of the following components is obligatory:

1.A flow switch should be installed in a straight horizontal stretch with a length of at least five times the line diameter on either side.

The flow switch must be positioned in the exchanger inlet pipe. It must be electrically connected in accordance with the wiring diagram (only unit without hydronic module).

If this is not possible, the installation should incorporate a protection device which is activated when there is no water circulating in the heat exchanger.

2.The presence of particles in the water can lead to obstructions in the heat exchanger.

It is therefore necessary to protect the heat exchanger inlet with an extractable mesh filter.

The filter mesh gauge must be at least 10 mesh/cm2.

The standard supply of the unit with hydronic module includes a mesh filter to be fitted during installation.

3.After assembling the system, or repairing the circuit, the whole system must be thoroughly cleaned with special attention paid to the state of the filters.

4.Pump flow rate control is made through a flow control valve supplied with the unit with hydronic module, which must be installed on the delivery pipe during installation.

5.In case of water refrigeration at temperatures lower than 5° C, or

if the unit is installed in areas where temperatures drop below 0° C, water must be mixed with a proper quantity of ethylene glycol (see the curve above).

Use the curve to determine the correct ethylene glycol concentration for the temperature.

Frost protection

The plate heat exchanger and the water connections of the hydronic module pump may be damaged in spite of the anti-freeze protection system these units are fitted with.

Frost protection of the plate heat exchanger and of the circuit inside the hydronic module is always guaranteed down to -10°C by the electric heaters that are automatically activated if needed. The power supply to the electric heaters of the plate heat exchanger and to the internal circuit of the hydronic module must never be interrupted.

IMPORTANT:

Both the appliance main switch (Q1) and the auxiliary protection switch for the electric heaters (QF101) must always be in the closed position (the positions of Q1 and QF101 are indicated in the wiring diagram).

GB - 7

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Contents Aquasnap 30RA / 30RH Contents 30RA/30RHTable II Electrical data Model RA Physical data and electrical data Model RATable I Physical data Model RA Table II Electrical data Model RH Physical data and electrical data Model RHTable I Physical data Model RH Dimensions and location of hydraulic connections mm Mod RA 026Hydronic module Unit installationGeneral information and hydronic module Typical water circuit diagram for units with hydronic module Water connectionsEthylene glycol curve Pump leakproofFor use with propylene GlycolWater pressure drop of the unit without hydronic module Electrical connections and refrigerant charge Electrical connectionsLiquid refrigerant charge ExampleRefrigerant charge and electronic control Electronic controlCompressor replacement Pump replacementNecessary checks/precautions before start-up Start-upTable III Pressure switch settings 30RA Operating limits30RH Operating limits Operating range 30RA unitsFinal recommendations General maintenanceMaintenance Troubleshooting L010126H27 Via R. Sanzio, 9 20058 Villasanta MI Italy Tel /3636.1

30RH, 30RA specifications

Carrier has long been a leader in the heating, ventilation, and air conditioning (HVAC) industry, and the Carrier 30RH and 30RA series showcases this legacy through a combination of advanced technology, energy efficiency, and reliability. These models are designed to meet the diverse needs of both commercial and industrial facilities, providing optimal comfort and air quality.

One of the standout features of the Carrier 30RH and 30RA series is their versatility. These models are equipped with high-efficiency scroll compressors that offer exceptional performance while keeping energy consumption low. This not only translates to reduced operational costs but also helps in meeting stringent environmental regulations. The compressors work efficiently across a range of operating conditions, making these units suitable for various climates and applications.

Incorporating innovative technologies, the Carrier 30RH and 30RA series utilizes advanced controls to optimize performance. The carrier’s proprietary control system allows for seamless integration with building management systems, enabling remote monitoring and management. This connectivity ensures that operators can track energy usage and system performance in real-time, facilitating maintenance and problem-solving before issues escalate.

Both models include high-efficiency heat exchangers that enhance the heat transfer process, further promoting energy savings. The units are also designed to minimize sound levels, making them ideal for installation in noise-sensitive environments. With noise reduction features, the Carrier 30RH and 30RA units operate quietly, ensuring comfort in spaces where silence is paramount.

Durability is another core characteristic of these models. Built with robust materials and innovative engineering, the 30RH and 30RA series is designed to withstand the rigors of demanding commercial and industrial applications. Their reliable performance over time is backed by rigorous testing, ensuring longevity and reducing the likelihood of unexpected failures.

Environmental sustainability is a priority for Carrier, and the 30RH and 30RA series reflect this commitment. By utilizing environmentally friendly refrigerants and energy-efficient technologies, these units significantly reduce greenhouse gas emissions.

In summary, the Carrier 30RH and 30RA series are exemplary models that combine efficiency, advanced technology, and reliability. Their design focuses on optimizing comfort, reducing energy consumption, and ensuring longevity, making them an excellent choice for any commercial or industrial installation. Whether it’s in a bustling city center or a quiet suburban area, these units are engineered to deliver exceptional performance and value throughout their lifecycle.
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