Page 37
INST
ALL
A
TION MANU
AL
ECODAN AIR SOURCE HEAT PUMP
Installation requirement checklist for
Mitsubishi Electric Ecodan Heat Pump Boiler
The following items are considered essential to ensure satisfactory functioning of the Mitsubishi Electric Ecodan
Heat Pump Boiler. Omission of any of these will result in unsatisfactory performance, some of which will compromise
the longevity, energy efficiency, and running costs of the system.
The location of the unit will need to take into consideration local planning regulations. The positioning shall allow for
an unobstructed air flow. The unit should be installed upright and on a level base. Dependant upon the unit location
there may be a requirement for condensate removal by using either drain sockets or a drain pan. For clearance
details please refer to the later section of this installation manual.
1. Unit Location
All external pipe work shall be insulated to ensure minimal thermal heat loss and also weather protection. Mineral
wool insulation (internal diameter 22mm, thermal conductivity 0.04W/m.K) shall be used along with Plysolene
sheeting (PIB) to wrap around for weather protection.
2. Pipework Insulation
3. Anti Vibration Mounts
The Heat Pump Boiler unit must be securely fixed using 4 X M10 bolts into a firm foundation in all cases. Anti-vibration
mounts should be used when the Heat Pump Boiler is mounted on the ground or on wall brackets.
All installer supplied pipe work must be connected to the heat pump boiler by using QTY2 600mm 1” bore steel
braided rubber flexible hose, one for flow and one for return which are supplied with the unit. Pipe work between
the unit and the Hot water tank shall be minimum 22mm. Provision shall be taken to avoid this pipe work freezing
during winter months.
4. Anti Vibration Connections (flexible hose, supplied loose)
5. System Water Contamination
The heat exchanger in the heat pump must be protected from particulate contaminates in the water circuit. When
retrofitting within an existing heating system sufficient provision must be taken to clean the existing systems to avoid
contaminates blocking the water circuit within the Heat Pump.
The existing radiator circuit MUST be chemically cleaned and thoroughly flushed by a competent person before
installation in all cases.
A high grade inline magnetic particulate filter such as the Fernox Boiler Buddy or the Spirovent SV3-025-T must be installed
internally in the boiler return, as near as possible to the heat pump. The Fernox Boiler Buddy is supplied as part of this
package and should be installed fully in accordance with the details provided at the back of this installation manual.
When the system is clean, it should be protected by the addition of a combined inhibitor/antifreeze such as Alphi-11
installed fully in accordance with the manufacturers recommendations.
To protect the heat pump from damage and to ensure that the product is covered by the warranty the system water
should have the following maximum levels:
Calcium: 100mg/l
Chlorine: 200mg/l
Iron / Manganese: 0.5mg/l
