Ecodan System Design; Installation - Mitsubishi Electric ecodan PUHZ-W50VHA2 User Manual

INSTALLATION

Ecodan System Design

Fernox Boiler Buddy and TF1
A Fernox Boiler Buddy is provided with the package, this must be fitted internally on the return circuit as close
to the Ecodan as possible. It should be installed fully in accordance with the manufacturers instructions on pages
57 - 59.
Flow Setter Valve
A flow setter valve is provided with the package to give an indication of the water flow rate through the primary
pipework. Each model of Ecodan has a minimum and a maximum flow rate shown in table 1.2 on the following
page, which must be achieved for the system to operate correctly.
The valve can be installed in either the flow or return pipework to the Ecodan. A flow rate indication can then be
taken from the bottom of the float.
Anti-Vibration Equipment
Flexible hoses are supplied with the Ecodan package and should be installed to connect the Ecodan to the system
pipework, do not over tighten joints and always use the washers provided. Anti-vibration mountings (i.e. Tico-
pad) should be installed under the mountings of the heat pump to prevent excessive vibration.
Automatic Bypass Valve
circuit as the pumps are operated by auxiliary contacts in the 2 port zone valves and there is no pump overrun
function. It should be positioned between the flow and return of the site installed primary pipe work when
required.
Any automatic bypass valve fitted should be setup correctly at commissioning stage to suit the heating system.
Failure to do this correctly can have a detrimental effect on the efficiencies of the heat pump system.
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