Contents; Introduction; Construction Of Appliance - Vaillant VCW 2O Instructions For Installation And Servicing

1 .
2 .
J .
4 .
7.
8 .
q
1 0 .
1 1 .
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.
- 2 4
9
1 1
2 3
2 2
1 4
o
N
3
o
1 8
1 9
2 1
trin I
2