General Information; Instructions Prior To Installation - Baxi Luna HT 1.850 Gebrauchsanleitung

The following remarks and instructions are addressed to Service Engineers to help them carry out a faultless
installation. Instructions regarding lighting and operation of the boiler are contained in the 'Instructions per-
taining to the user' section.
Note that installation, maintenance and operation of the domestic gas appliances must be performed ex­clu-
sively by qualified personnel in compliance with current standards.
Please note the following:
* This boiler can be connected to any type of convector plates, radiators, thermoconvectors. Design the
system sections as usual though taking into account the available output / pump head performances.
* Do not leave any packaging components (plastic bags, polystyrene, etc.) within children's reach as they are
a potential source of danger.
* Initial lighting of the boiler must be effected by a Qualified Service Engineer.
Failure to observe the above will render the guarantee null and void.

9. InstruCtIons prIor to InstallatIon

This boiler is designed to heat water at a lower than boiling temperature at atmospheric pressure. The boiler
must be connected to a central heating system and, on models withis option, to a domestic hot water supply
system in compliance with its performances and output power.
IMportant! The gas boiler is supplied without the following components witch must be performed ex­clusively
by qualified personnel:
• expansion vessel;
• pressure relief valve;
• circulating pump;
• Boiler filling tap;
• Low loss header.
Before connecting the boiler have the following operations effected:
a) careful checking that the boiler is fit for operation with the type of gas available. For more details see the
notice on the packaging and the label on the appliance itself.
b) careful checking that the flue terminal draft is appropriate; that the terminal is not obstructed and that no
other appliance ex­haust gases are ex­pelled through the same flue duct, unless the flue is especially de-
signed to collect the ex­haust gas coming from more than one appliance, in conformity with the laws and
regulations in force.
c) careful checking that, in case the flue has been connected to pre-ex­isting flue ducts, thorough cleaning
has been carried out in that residual combustion products may come off during operation of the boiler and
obstruct the flue duct.
To ensure correct operation of the appliance and avoid invalidating the guarantee, observe the following
precautions:
1. hot water circuit:
If the water hardness is greater than 20 °F (1 °F = 10 mg calcium carbonate per litre of water) a
polyphosphate or comparable treatment system responding to current regulations.
InstructIons pertaInInG to the InstaLLer

8. general InformatIon

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912.198.1 - GB