Specifications

t
6 Cornmissioning
and
testing
6, 1
El€ctrical
installation
r-e,'rinary
electrical
sysiem
checks
to
ensure
+€sflcal
safety
shall
be
carried
out
by
a
:r,mpetent
person.
Those
checks
are
outliired
r
tne INSTRUCTIONS
FOR
BR|T|SH
GAS
IiIULTIMETER.
6.2 Gas installation
Tne
whole
of the
gas
installation,
includinq
the
reter.
should
be inspected
and
testej
for
soundness
and
purged
in
accordance
with
the
iecommendations
of
Cp
331 :
3.
6.3 Water
circulation
system
The
whole
oJ the
system
should
be flushed
out
wtrn
Dotn
cotd
and
hot
water.
Ensure
all valves
are
open.
With
the
combi
boiler
fitted,
the
system
should
be
fiiled
and
air
locks
cteared.
V6nt
tnJOoifei
through
the
4
vent
points
shown
ln
tiq.
iand'2.
Loosen
the
black
cap
on the
automaiic
air
vent
oy 1
-z
turns.
Vent
all
heat
emitters
and
check
for.water
soundness.
On
a
sealed
svstem
fiti
until
the
pressure
gauge
registers
t.s
iraiizr.S
PSI).
(The
system
should
be filled
with
water
either
from
a
sealed
system
filler pump
with
a
break
La_lK.
or
by
a
method
of filling
given
in
BS
5376
: 2,
appendix
A.)
Check
operation
of
safety
valve.
Release
water
Trom
rne
system
until
the
initial
system
pressure
oL.-t,z
oat
ts
atatned,
taking
into
account
anv
otnerence.
in
height
between
the
pressur6
gauge
and
rhe point
at
which
the
higtiest
heat
emtner
ts
connected_
6.4
Lighting
the
combi
boiter
The
first
lighting
of the
appliance
shall
be
done
oy
a
quatttied
fitteronly.
He
shall
also give
clear
verbat
instructions
to
the
user
on
how
to
operate
the
combi
boiler,
controls
and
systemi
generally.
Light
the
combi
boiler
as
described
separately
in
the
"lnstructions
for
use,,.
6.4,1
Gas
soundness
Test
for
gas
soundness
around
boiler
qas
components
using
sense
of
smell
and
l6ak
detection
fluid.
6.4.2
Main
burner
pressure
Pull
off the plug
of the
NTC-resistor
and
test
the
matn
Durner
pressure
at
the
main
burnei
pressure
test
point.
Fig.33
t
23