Technical data

6 Functional description
6.4 Secondary System
The VANTAGE is provided with all necessary safety and
control devices for unvented DHW operation.
These are as follows:
A A prefitted temperature and pressure relief valve
(90 °C, 7 bar) (An additional overheat thermostat is
contained within the Vaillant boiler).
B Expansion relief valve (6.0 bar) incorporating a non
return valve.
C Pressure limiting valve (3.5 bar) incorporating a line
strainer.
The VANTAGE cylinder is supplied with a separately
packed expansion vessel.
– VANTAGE 120 / 150:
12 Litre vessel (Art no. 2370051)
– VANTAGE 200:
18 Litre vessel (Art. no. 2370052)
6.5 Immersion Heater
A 3 kW immersion heater is fitted to provide an auxiliary
back-up means of DHW.
The immersion heater is fitted to the inspection flange,
located in the side of the cylinder.
The immersion heater is designed for use in unvented
installations and contains a safety overheat thermostat
in addition to the operating thermostat.
Note:
Only the correct immersion heater containing a
safety overheat thermostat may be used for
replacement (see table 2).
Vantage 120 - 200 equipped with heater type
Redring LU 11 TC.
6.6 Secondary Return
For larger systems incorporating long pipe runs a secon-
dary return connection is provided on the top of the
cylinder.
Note:
A recirculation system incorporating a suitable
non ferrous pump may be connected into this
point.
Vaillant Vantage 120/150/20014