Daikin GCU2020PXB1 Guide

Hubbard Products Ltd. 1-7 Bluestem Road,

Ransomes Europark, Ipswich, Suffolk, IP3 9RR UK

Tel: +44 (0)1473 890522

email: commercial@hubbardproducts.com

www.hubbardproducts.com

Hubbard Products Ltd

Hermetic R744 Condensing Units

Model Number:

GCU2020PXB1

ESIE20-02

Installation, Commissioning and

Maintenance Manual

Page 1 of 179

P41135 Rev 03

Hubbard Products Ltd. 1-7 Bluestem Road,

Ransomes Europark, Ipswich, Suffolk, IP3 9RR UK

Tel: +44 (0)1473 890522

email: commerci[email protected]m

www.hubbardproducts.com

CONTENTS

EC Declaration of Conformity

Installation, Commissioning and maintenance

instructions

Material Safety data Sheets

Wiring Schematics

Pipework Schematics (P&ID)

Carel PR300T CO2 Controller manual and factory

settings

ABB Inverter non-default settings

Pressure & Enthalpy Diagram

Commissioning Form

ECO Design

Evaporator Installation Guide

Page 2 of 179

P41135 Rev 03

Hubbard Products Ltd. 1-7 Bluestem Road,

Ransomes Europark, Ipswich, Suffolk, IP3 9RR UK

Tel: +44 (0)1473 890522

email: commerci[email protected]m

www.hubbardproducts.com

1. EC Declaration of Conformity

Model: GCU2020PXB1

Part Number: A10145-02M

Page 3 of 179

P41135 Rev 03

Page 4 of 179

P41135 Rev 03

Hubbard Hermetic Rotary R744 Units

Installation, Commissioning and Maintenance

Manual

Model No.: GCU2020PXB1

ESIE20-02

Page 5 of 179

P41135 Rev 03

Contents

1. Safety recommendations

2. Storage

3. Description of the unit

4. Application

5. Handling

6. Post Transport Checks

7. Overall Dimensions

8. Serial plate Information

9. Installation Spacing

10. External Pipe and Electrical Connections

11. Basic Component layout

12. Mechanical Safety of the system

13. Commissioning and Maintenance

14. Service and Maintenance

15. Maximum Refrigerant Charge

16. Estimation of Refrigerant and Oil Charge

Page 6 of 179

P41135 Rev 03

These pages contain important safety information. Please read carefully before commencing any work on the

equipment to which the instructions refer.

It is assumed that installation, commissioning, service and maintenance activities must only be undertaken only by

competent personnel who have been trained for the activity. They should be familiar with this type of equipment

and the handling of refrigerants and their disposal.

Safety recommendations

When installing and using the unit please follow the recommendations listed here below.

•Installation shall be carried out in strict compliance with the diagrams and instructions supplied by the

manufacturer.

•Damages due to improper connections are excluded.

•The electric system available where the unit is installed shall meet the relevant standards in force.

•Maintenance shall be effected by trained personnel or by the manufacturer according to the provisions as per

EN378.

WARNING

Use safety gloves to protect your hands from possible cuts.

The user is strongly recommended to contact the manufacturer before attempting any intervention on the unit and

any use not corresponding to the manufacturer’s indications (in particular as for the field of application) and to

enquire about the possible dangers and contra-indications connected with an improper use of the machine.

•The unit shall be used following these instructions and sticking to the destination of use indicated by the

supplier. Any incorrect use can result in damages to the unit and represents a serious danger for people’s

health.

ATTENTION

The unit is not suitable for working in explosive environments.

Therefore the use of the unit in an explosion-dangerous atmosphere is absolutely forbidden.

When maintenance requires operations on the cooling circuit, drain the system and let it reach the

atmospheric pressure. Oil residuals left in the refrigerant receiver should be recovered and disposed of by

specialized firms, specially authorized by the national regulations in force.

ATTENTION

The unit is not suitable for working in salty environments. In such a case protect condenser

and evaporator with appropriate means.

•Only use refrigerant and oil as specified on the serial plate and this manual.

•No modifications or changes in circuit or components (such as: welding on compressor body, on refrigerant

receiver wall or on refrigerant separator wall) are allowed.

•Sight glasses, minimum level indicators and flanged couplings are secured to the receiver or the separator by

means of demountable fixing elements. As a rule, gaskets resist pressure, temperature and fluid stresses.

When fixing elements include gaskets (for example glass windows and flanges) however, reduced tightness

and bedding of gaskets can not be excluded due to their features; for this reason tighten them before and

possibly after starting. Driving torques can be different. On sight glasses (mounted on refrigerant receiver) use

a dynamometric wrench, otherwise the steel edge could be excessively loaded and cause glass breakage.

•Any official registration necessary for pressure appliances and repeated tests shall by governed by the laws

and regulations in force in the Country where the unit is installed. Compliance with laws, regulations and with

the technical instructions specified above falls within the manager’s responsibility.

•The final user shall protect the unit from external fire dangers.

Page 7 of 179

P41135 Rev 03

2. Storage

Equipment should be stored, prior to installation, in warm, dry conditions, free from dust, vibration and extremes

of temperature and humidity.

3. Description of the unit

Hubbard CO2 hermetic rotary series includes air-cooled condensing units. They consist of:

1. Condensing unit placed outside the cold room;

2. Electric control panel placed on the condensing unit.

Application

Under no circumstances must the equipment be used for any purpose other than that for which it

was specifically designed.

The equipment must be located on, and secured to a solid level base or framework designed for the purpose.

**Anti-vibration pads/feet are strongly recommended.

Access must be provided to allow safe working for both installation and servicing of all electrical and refrigeration

components. A safe exit path must be provided in the event of a mishap. During installation, the space must be

adequately ventilated to remove any potentially toxic/asphyxiating/explosive gases that may otherwise build up.

All pipework connected to the equipment must be adequately supported and all electrical components and supplies

connected to the equipment must conform to IEE regulations.

Refer to the individual electrical drawings supplied width the equipment for details of the electrical circuitry.

Extreme care should be exercised when opening any part of the refrigerant pipework to atmosphere for the

purpose of connecting pipework etc. The systems contain a positive pressure of inert gas, when despatched,

which will be released upon any breach of the equipment's pipework or pressure vessels.

Page 8 of 179

P41135 Rev 03

Handling

The unit shall be handled by appropriate lifting and transport means. An appropriate risk assessment should be

undertaken by a suitably qualified person before attempting to move or lift the equipment.

Make sure that no one is in transit in the operating area of the lifting/ transport means to

prevent any possible accidents to people.

If the unit is in a wooden case or crate, sling the packing properly before handling it.

Lifting speed shall be such as not to make the packed unit oscillate dangerously and

possibly fall.

Post Transport Checks

On siting the unit, we recommend the security of all electrical connections is checked, and system

flanges, rotalock valves, and flexible connections are secure. Where flexible hose lines are used please

ensure that the outer material is not subject to rupture due to contact with other surfaces.

Before initial operation we recommend that crankcase heaters are operated for 24 hours prior to

compressor operation to ensure correct lubrication properties are provided.

The units are factory tested including leak, pressure and electrical test – not running test. Anyway, is

highly recommend a further pressure test after transport and positioning to help prevent leakage in

operation. Pressure testing should be carried out according to your companies test procedures and

where applicable in accordance current P.E.D. recommendations, F-gas regulations and your customers

requirements.

Page 9 of 179

P41135 Rev 03

Dimensions and weights:

Models: GCU2020PXB1

7.1 Packaged Unit

7.2. Unit Dimensions

Page 10 of 179

P41135 Rev 03

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