Vaillant PFGHRD A5 - 12/12
- 7 -
FLUE ANCHOR
BRACKET &
SCREW
9.
The PFGHRD is ready for commissioning.
Commissioning
1.
Complete installation and pipework of the
boiler according to the installation instructions.
Ensure tightness of all flue joints.
2.
Open the cold water supply and cold water
inlet valve of the appliance and check all
connections for water leaks.
3.
Turn on hot water tap and flush the PFGHRD
until it is completely filled with water and no
noise is audible.
4.
The PFGHRD is ready for use.
5.
Commission the boiler in accordance with the
installation instructions.
To prevent corrosion of the boiler or PFGHRD
and also on the air/flue gas duct, note the
following:
Do not use sprays, solvents, chlorinated cleaning
agents, paint, adhesives or similar substances
in the vicinity of the boiler. Under unfavourable
circumstances, these substances may cause
corrosion.
All mains water heated by the ecoTEC range of
combination boilers will be classed as Category
2 fluid (potable water) and small expansion
volumes created during warm up must be
allowed to flow back into the supply pipe. No
back flow prevention is necessary with this
appliance as the very small expansion volume is
unlikely to heat the incoming service pipe above
25 Deg C.
Note that where back flow prevention devices
are fitted (this may include water meters)
these can prevent the permitted expansion into
the cold supply. This along with the effects of
pumping and / or water hammer can result in
a pressure build-up that may cause damage
to the boiler (and other household devices
such as showers). Vaillant cannot accept
responsibility for damage caused to the boiler
or its surroundings where an appliance has
been fitted to supplies with mechanical back
flow prevention. In these cases the requirement
would be that a competent installer correctly
installs a suitable shock arrestor / mini-
expansion vessel adjacent to the boiler in the
cold water supply pipe.
INSTALLATION
