Boiler Installation; Boiler Size - Baxi LUNA HT 280 Installers And Users Instructions

11. Boiler installation

LUNA HT 1.280 - HT 1.240 - HT 1.120
MR: G3/4 heating flow
US:
G3/4 domestic hot water boiler outlet
GAS: G3/4 gas inlet to the boiler
ES:
G1/2 cold water inlet
RR: G3/4 heating return
SC: condensation drain
Figure 6

12. Boiler size

to remove sludge and contaminants, using suitable proprietary products as described in section
2.1.
To avoid damaging metal, plastic and rubber parts, use only neutral cleaners, i.e. non-acid
and non-alkaline such as SENTINEL X100 and FERNOX heating circuit protective. To use
this product proceeding strictly in accordance with the makerʼs directions.
Remember that the presence of foreign matter in the heating system can adversely affect the
operation of the boiler (e.g. overheating and noisy operation of the heat exchanger).
Failure to observe the above will render the guarantee null and
Decide upon the boiler location, then tape the template on the wall.
Connect the pipework to the gas and water inlets prearranged on the template lower bar.
If you are either installing the boiler on a pre-existent system or substituting it, we suggest you also
fit settling tanks on the system return pipework and under the boiler to collect the deposits and scaling
which may remain and be circulated in the system after the purge.
When the boiler is fixed on the template connect the flue and air ducts (fittings supplied by the ma-
nufacturer) according to the instructions given in the following sections.
Connect the condensate outlet to the siphon supplied with the boiler. Connect the siphon to a drain,
making sure there is a continuous slope. Horizontal sections must be avoided.
BOILER WIDTH 450
BOILER CONNECTION POINTS
Figure 7
MR: G3/4 heating flow
US:
GAS: G3/4 gas inlet to the boiler
ES:
RR:
SC:
13
void.
LUNA HT 330 - HT 280
G1/2 domestic hot water outlet
G1/2 cold water inlet
G3/4 heating return
condensation drain