22
m
caUtion
– the boiler should be located observing the
required clearances, and provide safe, adequate
service access.
6.9
plumbing connections
the plumbing connections have the following characteristics
and dimensions.
95
65 65 65 65
=
=
400
M
U
G
E
R
Fig. 17
description
murelle pro lpg
25
M - system flow
Ø 22 mm
R - system return
Ø 22 mm
U - Domestic hot water output
Ø 15 mm
e - Domestic hot water inlet
Ø 15 mm
G - Gas cock connection
Ø 1/2"
m
caUtion
a sealed system must only be filled by a competent
person (see section method of filling a sealed
system page 27).
6.10 gas supply
murelle pro lpg
boilers leave the factory prearranged for gas
G31.
the gas connection must be made using seamless steel or
copper tube.
Where the piping has to pass through walls, a suitable
insulating sleeve must be provided.
When sizing gas piping, from the meter to the boiler, take into
account both the volume flow rates (consumption) in m3/h
and the relative density of the gas in question.
the sections of the piping making up the system must be
such as to guarantee a supply of gas sufficient to cover the
maximum output available from the boiler, limiting pressure
loss between the gas meter and any apparatus being used to
not greater than 1.0.
an adhesive data badge is sited inside the front panel; it
contains all the technical data identifying the boiler and the
type of gas for which the boiler is arranged.
