Checklist For Ecodan - Mitsubishi Electric ecodan PUHZ-W50VHA2 User Manual

This checklist has been created to help you understand the differences from other types of heating systems you
may have installed. We suggest you use this checklist as a helpful summary of the main differences over
conventional heating systems, but you will also need to understand and comply with all of the technical details
contained within this document to ensure a successful installation. For further assistance please contact Mitsubishi
Primary System Circuit
It is very important that the primary system is cleansed using a suitable cleansing agent such as Fernox F3
or Sentinel X300; to ensure that any flux residues / installation debris is removed.
The Ecodan and external connecting pipework require protection against freezing. For this reason a
combined anti-freeze and inhibitor product such as Fernox HP-5c or Alphi-11(see pages 54 & 55) or
Sentinel R600 (see page 56) must be used in the correct quantity.
All primary pipework on flow and return between the Ecodan unit and cylinder should be insulated with
Armaflex or similar. Weather protection should be added to all outdoor pipework. Flexible connection
pipes (supplied) MUST be fitted between the outdoor unit and primary rigid pipework on both the flow
and the return.
The Fernox Boiler Buddy should be fitted internally on the return pipe (from the Ecodan) to help protect
the heat pump from any heating system contamination and provide an ongoing visual indication of the
system water condition.
Interconnection Between Ecodan and Flow Temperature Controller 2 (FTC2)
A 2 core signal cable is needed between the internal FTC2 and the external Ecodan unit . This cable should
be of 1 to 1.5mm² and is NOT supplied with the package.
Radiator System Circuit
As the Ecodan generates lower temperatures than a conventional boiler the radiators should have been
designed to suit the lower mean temperature. These need to be calculated using the design tool supplied
on the AEI training course or using other appropriate methods.
Retrofit Situations
The heat exchanger in the Ecodan should be protected from particulate contaminates in the water circuit.
When fitting in a retrofit situation the existing radiator circuit MUST be chemically cleaned and thoroughly
flushed before installation.
Boiler Buddy
and TF1
6
INTRODUCTION

Checklist for Ecodan

Supplied Parts
Ecodan Air Source
Flexible Pipes (x2)
Heat Pump
(see page 10 for
pictures of each model)
5
Flow Setter
Flow Temperature
Valve
Controller 2
Fig. 1.2