Hydraulic Connections; Flushing The System; Sludge Removal - DeDietrich GT 430 Installation And Service Manual

4.5 Hydraulic connections

4.5.1

Flushing the system

Installing the boiler in new installations
(installations less than 6 months old)
Clean the installation with a universal cleaner to eliminate
debris from the appliance (copper, hemp, flux).
Thoroughly flush the installation until the water runs clear and
shows no impurities.
4.5.2

Sludge removal

A tapped ø 2'' 1/2 hole with a plug has been provided on the
bottom of the front of the boiler..
Fit a 1/4 turn valve (not supplied) on the opening to remove the
sludge.
Sludge removal leads to the draining of large quantities of water, so
remember to refill the system after the operation.
20
Installing the boiler in existing installations
Remove sludge from the installation.
See: Sludge removal.
Flush the installation.
Clean the installation with a universal cleaner to eliminate
debris from the appliance (copper, hemp, flux).
Thoroughly flush the installation until the water runs clear and
shows no impurities.
After this operation, go ahead and fill the installation.
See: Remplissage de l'installation.
never replace a boiler in an existing system without carefully
rinsing the system first. Install a sludge decanting pot on the
return pipe, very close to the boiler.
GT 430 05/03/2013 - 300011893-001-02