Boiler Location; Central Heating System - Baxi LUNA HT 380 Notice D'installation Et D'entretien

The boiler is not suitable for outdoor installation.
The boiler must be installed on a flat vertical wall which is capable of supporting the weight of the boiler.
The boiler may be installed in any room or internal space, although particular attention is drawn to the requirements of the
current electrical provisions with respect to the installation of the boiler in a room or internal space containing a bath or
shower. Where a room-sealed boiler is installed in a room containing a bath or shower, it must not be possible for a person
using the bath or shower to touch any electrical switch or boiler control utilizing line voltage electricity.
The boiler may be installed in a cupboard or compartment, provided it is correctly designed and sufficiently ventilated for
that purpose.
The boiler is designed for use in a sealed central heating system.
Refer to Technical Data, section 2.8, for details of the heating system volume.
The system should be designed to operate with flow temperatures of up to 176 °F / 80 °C. When designing the system,
the pump head, expansion tank size, mean radiator temperature, etc. must all be taken into account. Refer to the pump
performance table in section 2.7 for guidelines.
The boiler is supplied with the following components built in:
Pressure relief valve - set to operate at 29 psi / 2 bar.
WARNING
The discharge pipe must be routed clear of the boiler to a drain, in such a manner that it can be seen, but cannot
cause injury to persons or property.
The pressure relief valve must be manually operated at least once a year.
1. Avoid contact with hot water coming out
2. Prevent water damage
Pressure gauge - to indicate the system pressure to be maintained.
Expansion tank - with a capacity of 2.642 gal (USA) / 10.0 l and pre-charged to a pressure of 7.25 psi / 0.5 bar.
Note:
The expansion tank must be charged to match the pressure of the central heating system upon installation.
By-pass - The boiler incorporates an automatic by-pass. However, where all radiators are fitted with thermostatic radiator
valves, an external by-pass must be fitted.
By-pass could be a 0.86 in / 22 mm pipe controlled by a
valve or an uncontrolled radiator
Lockshield valve
Note: A drain tap should be installed at the lowest point of the
heating circuit and beneath the appliance.
Fig. 19
INSTALLATION AND SERVICING INSTRUCTIONS

5. BOILER LOCATION

6. CENTRAL HEATING SYSTEM

Radiator
valve
System
drain tap
Boiler
Automatic air vent
Heating flow
Heating
by-pass
(if required)
Heating retum
26
Additional expansion tank
(if required)
Filling point
DHW outlet
Mains water inlet
7109741.01 - en