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Good Installation Guide

This essential installation guide, is a list of good practices that must be completed before commissioning.

Complying with these good practices will ensure a smooth customer commissioning and handover, and more importantly help stay compliant with MCS. 

Failure to comply will delay BUS grant payments and return visits to site to rectify issues 

Installation practice 1: Pipe work lagging through the wall. 

We highly recommend installing Primary –Pro insulation for the insulation of the outdoor unit pipe work. This is available at most suppliers

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  • The pipe work must be insulated completely through the length of the wall.

  • The Insulation must be a minimum of 19mm thick for up to 20 metres external pipe work

  • Class O Insulation is not UV stable, therefore must not be used

  • Climaflex Polyethylene Pipe Insulation (Grey Lagging) must not be used outside

  • All joints must be fully sealed to reduce heat loss

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Installation Practice 2: The Installation of Anti-freeze valve

 

The Antifreeze valves must be fitted at the lowest point of the outdoor unit, to allow the outdoor unit to drain.

There must be 150mm clearance below the valve and the ground level, also 100mm clearance between the two valves to stop water freezing on top of the valve below, unless the valves are fitted with air pipe Zero guard as shown in the right hand picture.

 

They must also be installed in a vertical position and not angled to avoid another pipe below. The valve body also need to be fully insulated.

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Please refer to your manufacturers instruction manual to check their requirements, some manufacturers don't require frost protection.

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Installation Practice: 3 The Installation of Flexible hoses

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The flexible hoses must be installed between the outdoor unit connections and the pipe work entering the building.

These flexible hoses remove vibration through the solid copper pipe work.

Flexible hoses are available in 300mm, 500mm & 750mm length, and with elbows or a straight connection

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Installation Practice 4: Location of outdoor unit

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The outdoor unit location should be fitted in accordance with the manufacturers specification or installation instructions.

Each manufacturer will provide minimum clearances behind the unit and in front of the unit to ensure sufficient air flow to stop freezing and poor performance.

Also check manufacturers minimum clearances to the sides for future servicing.

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​Electrical installations should comply with current wiring regulations, we require electrical test certificates before MCS certificates are created.

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Its essential that the heat pump energy consumption is monitored through an electric meter either dim rail mounted or external meter as shown in the diagram below.

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Installing a separate fuse board will eliminate any existing issues with the homeowners electrical installation.

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