Atlantic MH IXTRA M Quick Installation

Product Overview

The Atlantic MH IXTRA M is a hydraulic unit designed for Monobloc 1 service heat pump systems. This guide provides essential information for a quick and efficient installation.

Key Features:

• Model: MH IXTRA M
• Type: Hydraulic unit for Monobloc 1 service
• Weight: 62 kg

Dimensions and Specifications

Unit Dimensions:

• Width: 448 mm
• Height: 847 mm (804 mm unit height)
• Depth: 477 mm
• External Unit Intake Diameter: Ø M 26x34
• Outgoing Heating Flow Diameter: Ø M 26x34

Installation Clearances (minimum):

• Front: 1000 mm
• Sides: 600 mm
• Rear: 250 mm
• Top: 350 mm
• Bottom: 800 mm

Electrical Specifications:

• Power Supply (Monophase): 230 V ~
• Power Supply (Triphase): 400 V ~
• Maximum Intensity (Monophase): 32 A
• Maximum Intensity (Triphase): 20 A

Hydraulic Specifications:

• Pipe Diameter (Departure/Return): 1"1/4
• Maximum Operating Pressure: 0.3 MPa (3 bar)
• Hydraulic Circuit Flow Rate: 600-2100 l/h
• Torque for tightening: 15-35 Nm

Components Identification

The hydraulic unit comprises the following main components:

• 1 - Electric control box
• 2 - Controller / User interface
• 3 - Start/Stop button
• 4 - Manometer
• 5 - Heating circulation pump
• 6 - Drain valve
• 7 - Flowmeter
• 8 - Automatic bleeder valve
• 9 - Expansion vessel
• 10 - Buffer tank
• 11 - Safety valve

External Unit Connections:

• A - Outdoor unit intake (Ø M 26x34)
• B - Outgoing heating flow (Ø M 26x34)

Installation Precautions

• The outdoor unit must be installed outdoors. If an enclosure is used, it must have large openings on all four sides and respect installation clearances.
• Choose an easily accessible location for installation and future maintenance.
• Ensure that the passage for hydraulic connections is clear.
• Avoid installing the unit in locations exposed to dirt or significant water runoff.
• In areas with heavy snowfall, ensure that air inlets and outlets are not blocked by snow.
• Keep the unit away from heat sources or flammable materials.
• The installation surface must be permeable, stable, and capable of supporting the unit's weight without transmitting vibrations. Anti-vibration pads are available as accessories.
• The unit must be securely fixed to the ground.
• The unit must be raised at least 50 mm from the ground. In snowy regions, this height should be increased, but not exceed 1.5 m.
• Ensure proper sealing of all connections using appropriate joints and Teflon tape or thread seal.
• For hydraulic connections exposed to freezing temperatures, use glycolated water. The recommended concentration is 30-40% monopropylene glycol. Monoethylene glycol is prohibited.
• Do not use anti-freeze valves with glycolated water and vice versa.

Electrical Connections

• Ensure all power supplies are disconnected before any electrical work.
• Electrical installation must comply with current regulations (e.g., NF C 15-100 in France).
• Use rigid wire for fixed installations.
• Tighten cable glands securely to prevent accidental disconnection of conductors.
• Ground connection and continuity are mandatory.
• Ensure the electrical supply is sufficient for the heat pump and all other connected appliances.
• The heat pump must be powered directly by dedicated lines protected by circuit breakers.
• A 30 mA differential protection is required.
• The unit is designed for a nominal voltage of 230V or 400V +/- 10%, 50 Hz.
• Respect phase-neutral polarity during electrical connection.

Hydraulic Connections

• Rinse the heating circuit thoroughly before connecting the heat pump to remove any particles that could compromise the unit's operation. Do not use solvents or aromatic hydrocarbons.
• For installations with underfloor heating/cooling, use an approved anti-corrosion product (Ref. 150192) is recommended.
• Connect the outdoor unit's piping to the hydraulic module, respecting the flow direction.
• Install a decantation pot on the heating return circuit.
• Use union fittings for easy disassembly.
• Connect the central heating piping to the hydraulic module, respecting the flow direction.
• The pipe diameter between the hydraulic module and the heating manifold should be at least 1 inch (26x34 mm).
• Prefer flexible connectors to reduce noise and vibration transmission.
• Calculate pipe diameters based on flow rates and hydraulic network lengths.
• Tighten connections to 15-35 Nm using a spanner.

Maintenance and Operation

• Refer to the indoor unit installation manual for commissioning.
• Check the pressures of the refrigeration circuit.
• Refrigerant recovery, vacuum pulling, gas filling, and leak testing operations must be performed by qualified installers in compliance with refrigerant handling regulations.
• Ensure the expansion valve is open before performing these operations.
• Follow the specified procedure for mode evacuation.

User Information

• Explain the installation's functions to the user, especially the ambient sensor and programmable features.
• Emphasize the high inertia of underfloor heating and the need for progressive adjustments.
• Instruct the user on how to check the heating circuit filling.

Compliance and Certifications

This equipment complies with:

• Low Voltage Directive 2014/35/UE
• Electromagnetic Compatibility Directive 2014/30/UE
• Machines Directive 2006/42/CE
• Pressure Equipment Directive 2014/68/UE
• Ecodesign Directive 2009/125/CE
• Energy Labelling Directive 2010/30/CE

It also complies with:

• Decree No. 92-1271 concerning refrigerants.
• Regulation 842/2006 on fluorinated greenhouse gases.
• Relevant product and testing standards (EN 14511 series, XP ENV 12102).

Electrical Wiring Diagrams

Refer to the provided diagrams for single-phase and three-phase electrical connections.