Vaillant VCW 2O - Contents; Introduction; Construction of Appliance

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Contents
lntroduction
Construction
of aPPliance
General
reouirements
lnstallation
of
boiler
Water
circulation
system
Commissioning
and
testing
Assembling
Servicing
of
combi
heater
Foult
finding
Short
list of
ports
Technical
data
2 Construction
of
ApPliance
1 lntrcduction
P4e The
Vaillant csnbi
boiler
is a
wall-rnqrrH
-
2 natural draught
open-flued
(or
in the case d
2
VCW-sine,
room-sealed)
boiler
with buifr
it
4
instantaneous
domestic
hot water
heater,
^l
Output
ratings are shown
in
"Technical
Dda-.
;\
The
boiler
is designed
for use
in
a sealed c
;;
open
vented
system
with
pumped
circuldin
,;
ahd
includes
the instantaneous
hot
w&
46
sYSIem.
61
Circulating
pump,
expansion
vessel
(forseald
64 system
only),
terminal
box,
control and
sdetf
devices
are
provided
with
the appliance.
Note to
Installers
ln hard
water areas
we recommend
the d
supply
to the appliance
is
via a
scale
reducer.
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trin I
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