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Dimplex LA 6 MI - User Manual

Dimplex LA 6 MI
63 pages
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Table of Contents

Other manuals for Dimplex LA 6 MI

Questions and Answers

  • A
    Ashley GarciaAug 15, 2025
    Why Dimplex LA 6 MI does not operate?
    • A
      Adam PetersAug 15, 2025
      Your Dimplex Heat Pump might not be operating because the external temperature is above the HEAT OFF setting in the advanced settings menu. Also, if the water inlet temperature is lower than 20°C, the inline flow boiler will activate to raise the temperature.
  • B
    Brett HayesAug 18, 2025
    Why my Dimplex LA 6 MI Heat Pump does not heat up enough?
    • R
      Robert McknightAug 18, 2025
      Your Dimplex Heat Pump might not be heating up enough because it is undersized for the heat demand of the property at low external temperatures. It could also be due to the water flow temperature being set too low for the installed heat emitters.
  • N
    nicholasedwardsAug 21, 2025
    Is ice formation on my Dimplex Heat Pump normal?
    • S
      Stephanie DixonAug 22, 2025
      Yes, ice formation on the evaporator of your Dimplex Heat Pump is normal during cold weather. The defrost function should keep the majority of the coil clear of ice to allow adequate air flow. Typically, if the ice is less than 1cm thick and the controller does not show a fault, the system is operating correctly.
  • R
    Ronald BrownAug 25, 2025
    What to do if Dimplex LA 6 MI Heat Pump does not heat up property quickly?
    • A
      Allen ThompsonAug 26, 2025
      Dimplex Heat Pumps are designed for continuous operation and do not have a large overload factor to quickly heat a building. To address this, ensure that the property temperature is not allowed to significantly drop during periods of cold weather.
  • J
    joseph62Aug 28, 2025
    Why is my Dimplex Heat Pump hot water cylinder not hot enough?
    • R
      Ryan OdonnellAug 28, 2025
      The hot water cylinder of your Dimplex Heat Pump may not be hot enough. Check that the coil is correctly sized for the heat pump's output and that the temperature setting within the controller is set to 45C.
  • A
    Angela JohnsonAug 31, 2025
    How to fix a noisy Dimplex LA 6 MI Heat Pump?
    • A
      allisonconwaySep 1, 2025
      If your Dimplex Heat Pump system is noisy during operation: * Check that the unit is not installed on an incline. * Make sure that all covers are closed correctly.
  • Y
    Yvonne SanchezSep 3, 2025
    Why does my Dimplex LA 6 MI Heat Pump emit mist?
    • J
      Jennifer YoderSep 4, 2025
      Mist emission from your Dimplex Heat Pump is normal during certain atmospheric conditions. This occurs because the drop in air temperature caused by the heat pump is cold enough for mist to form.
  • S
    Sally JordanSep 7, 2025
    What to do if Dimplex Heat Pump hot water cylinder is cold?
    • B
      Brandon MclaughlinSep 7, 2025
      If the hot water cylinder of your Dimplex Heat Pump is cold, check that the controller is in TANK mode.
  • L
    Larry GreenSep 12, 2025
    How to fix a blank Dimplex LA 6 MI Heat Pump controller?
    • C
      Christopher HernandezSep 12, 2025
      If the controller of your Dimplex Heat Pump is blank, check the circuit breaker to the heat pump.

Summary

Contact Details

Supporting documents

Technical manuals

Lists documents for planning stages.

Installation instructions

Lists documents for installation.

User guides

Lists documents for user operation and maintenance.

Section 1: Introduction

What are the benefits of a heat pump?

Explains environmental and energy benefits.

How a heat pump works

Describes the refrigeration cycle and components.

Intended Use

Specifies the intended purpose and restrictions of the device.

Air as a heat source

Discusses factors for choosing an air source heat pump.

Advantages of inverter compressors

Highlights benefits of inverter technology over fixed speed.

Advantages of fixed speed compressors

Details the benefits and characteristics of fixed speed compressors.

Heat pump labelling

Explains the coding convention for heat pump models.

Comparison of the LA MS and LA MI ranges

Compares features of LA MS and LA MI heat pump ranges.

Section 2: Selection and sizing of the heat pump

Process to select a heat pump

Outlines steps for choosing the correct heat pump model.

Mono energy operation

Explains how the system operates in mono energy mode.

Accurately determining the buildings heat loss

Emphasizes the importance of accurate heat loss calculation for sizing.

Estimating the buildings heat loss

Details methods and formulas for estimating building heat loss.

Dimplex design service

Describes the free service for calculating heat loss and product specification.

Drying-out of buildings

Advises on handling increased heat demand during building drying.

Sizing example 1

Illustrates heat pump sizing with a practical example.

Sizing example 2

Provides a second practical example for heat pump sizing.

Section 3: System controls in a domestic setting

Boiler inter lock

Explains how to prevent energy wastage using external controls.

Horstmann PRT thermostat

Describes the thermostat's features for heat pump control.

Heat Pump Controller

Details the built-in controller for safe and efficient operation.

Weather compensation

Explains how weather compensation optimizes efficiency.

Section 4: Selection of heat emitters and flow temperatures

Minimising the flow temperature

Explains the impact of flow temperature on system performance and SPF.

Considerations for fan convectors

Discusses specific considerations for using fan convectors.

Section 5: DHW preparation with inverter heat pumps

Dimplex EC-Eau cylinder range

Introduces the range of stainless steel cylinders for hot water.

Dimplex ECS Combination DHW and Buffer Cylinders

Describes combination cylinders for DHW and buffer storage.

Heat pump power for hot water preparation

Addresses the heat pump's role in hot water production.

Selecting a DHW cylinder

Guides on choosing the right cylinder for heat pump systems.

Cylinder volume and reheat

Discusses cylinder sizing and reheat times for DHW.

Cylinder replacement

Advises on replacing existing cylinders for heat pump installation.

Selecting and controlling the DHW temperature

Explains how to set and manage DHW temperature.

Sterilisation

Discusses legionella risk and weekly cylinder sterilisation.

Secondary circulation pipes

Explains the use and considerations for secondary circulation pipes.

Section 6: Installation considerations

Physical location

Details suitable locations for outdoor heat pump installation.

Fixing of the heat pump

Covers methods for securely fixing the heat pump unit.

Wall mounting

Provides guidance on wall mounting the heat pump and condensate tray.

Ventilation

Specifies requirements for adequate airflow around the heat pump.

Minimum maintenance clearances

Outlines necessary space for performing maintenance.

Sound insulation measures

Discusses methods to minimize noise impact on surroundings.

Air quality

Discusses air pollutants that can affect heat pump lifespan.

Local planning regulation

Advises installers to verify local planning rules before installation.

MCS Planning Standard

Explains the MCS standard for noise level assessment.

Town and Country planning, England

Summarizes planning requirements for heat pump installations in England.

Planning in Wales and Northern Ireland

States planning requirements for Wales and Northern Ireland.

Town and Country planning, Scotland

Outlines planning rules for heat pumps in Scotland.

Section 7: Heating System Connection

External pipe work

Covers insulation and material considerations for external pipework.

Minimum water volume

Specifies the required minimum system water volume.

Buffer tank

Explains the function of buffer tanks for defrost and runtimes.

Minimum heating water flow rate

Details factors for ensuring correct heating water flow rate.

Taconova flow checker

Describes the use of the flow checker for verifying flow rate.

Plumbing connections

Provides information on specific plumbing connection sizes and torques.

Frost protection

Discusses frost protection measures and potential risks.

Flushing the system

Advises on flushing the system before connecting the heat pump.

Filter

Emphasizes the importance of installing a filter before the water inlet.

Filling the system

Outlines the process for filling the system with potable water.

De-aeration

Explains how to remove trapped air from the system.

Adjusting the water flow rate

Details how to adjust pump speed for optimal flow and temperature difference.

Expansion vessel sizing

Discusses sizing expansion vessels based on system volume and height.

2 port valves

Explains the function and installation of 2 port valves for mode switching.

Controlling DHW temperature

Describes how the controller manages DHW temperature via sensors.

Section 8: Electrical Connection

Routing of cables within the heat pump

Guides on safely routing cables inside the heat pump.

Ducting cables

Advises on using ducting to protect cables from environmental factors.

Connection of the power supply to the Heat pump

Covers connecting the main power supply to the heat pump unit.

Main power supply cable

Details cable selection and rating based on power consumption.

Inline flow boiler

Explains the function and safety features of the inline flow boiler.

Domestic hot water immersion

Discusses switching the 3kW immersion heater directly or via relay.

Controller cable

Details connection, length, and limitations of the controller cable.

Connection with the system

Explains various communication connections to the system.

Installation of the controller

Provides guidelines for optimal controller placement and installation.

Section 9: System Health checks

Heat pump

Lists checks for the heat pump itself, including fan and sound.

Electrical

Covers checks for power cable, earth wire, RCCB, and supply voltage.

Hydraulic

Details checks for water pressure and pressure relief valve.

Cylinder

Lists checks for cylinder temperature, immersion stats, and relief valve.

Wall mounted thermostat

Outlines checks for thermostat battery and operational settings.

Heat pump controller

Covers checks for the controller panel and user settings.

Section 10: Standard packages

Package 1 and 2

Describes packages for heating and DHW with combined/separate cylinders.

Package 3

Describes packages for heating only with a buffer tank.

Section 11: Technical specification of the LA MI range

Approvals

Lists certifications and standards the product complies with.

Performance Data

Provides detailed performance figures for different models.

CE declaration of conformity

LA 6 MI and LA 9 MI Spare parts

LA 12 MI and LA 16 MI Spare parts

Information for DHW cylinder with buffer - ECS125 HP-580

Information for DHW cylinder with buffer - ECS150 HP;75-580

Information for DHW cylinder with buffer - ECS210 HP;75-580

Dimplex LA 6 MI Specifications

General IconGeneral
BrandDimplex
ModelLA 6 MI
CategoryHeat Pump
LanguageEnglish

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