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1. General information
Installation of a dual fuel must be performed in accordance with extensive regulations and guidelines. It is
therefore the duty of the installer to be familiar with all applicable regulations and requirements. Installation,
start-up and maintenance must be performed with utmost care.
The burner must not be operated in rooms with high levels of air humidity (laundry rooms), dust or corrosive
vapours. The boiler room must be ventilated accordingly with ventilation air.
Light oil in accordance must be used. The burners are suitable for combustion of natural gas or liquid gas
and are in compliance with European standard EN 676 and EN 267.
2. Scope of delivery
Before installing the Nu-Way Series MDFL1510/2705 dual fuel, please check that all the items included in
the scope of delivery are present.
Scope of delivery:
burner, mounting kit, separate operating instructions, technical information, separate circuit diagram, flange
seal, one 7- pin connector and one 4- pin plug connector (Wieland connector).
Caution !
Oil nozzles are not included in the scope of delivery.
For gas:
Gas train
The gas pipe must be designed to conform to the flow rate and the available gas flow pressure and routed
with the lowest pressure loss over the shortest distance to the burner. The loss of gas pressure via the gas
train and the burner as well as the resistance on the fuel gas side of the heat generator must be less than
the connection flow pressure.
Caution !
Observe sequence and throughflow direction of fittings
3. Maintenance and customer service
The complete system should be checked once a year for correct functioning and leaks in accordance with
DIN 4755 by a representative of the manufacturer or other suitably qualified person.
According to EN 267 it is not permissible to perform repairs on components with a safety function. On the
other hand, the replacement of parts with genuine parts or approved equivalent parts is permitted.
We accept no liability for consequential damage in cases of incorrect installation or repair, the fitting of non-
genuine parts or where the equipment has been used for purposes for which it was not intended.
4. Operating instructions
The operating instructions together with this technical information leaflet must be displayed in a clearly vis-
ible position in the boiler room. The address of the nearest customer service centre must be displayed on
the back of the operating instructions.
5. Instruction of operating personnel
Faults are often caused by operator error. The operating personnel must be properly instructed in how the
burner works. In the event of recurring faults, Customer Service should be notified.
6. Filter/Strainer
According EN 676 a filter/strainer shall be fitted at the inlet of the safety shut-off valve to prevent the ingress
of foreign elements.
