Boiler Block Pressure Test (Only When Supplied In Loose Sections); Preparing For Pressure Test; Carry Out A Pressure Test; Leaking Hub Joints - Buderus Logano GE615 Installation And Maintenance Instructions Manual

4
Installation
4.9

Boiler block pressure test (only when supplied in loose sections)

A boiler block pressure test must be carried out (only
when supplied in loose sections). If supplied as a pre-
assembled block, the pressure test has already been
carried out in the factory.
For the further installation of a pre-assembled boiler
block, (Æ see section 4.11.4, page 25).
4.9.1

Preparing for pressure test

Caution: Risk of accident
as a result of ignoring the safety regulations.
z Observe the relevant country-specific
standards, work safety legislation and
regulations for carrying out pressure tests.
z Close off flow and return connections (flow connection
flange with air vent valve).
Caution: System damage
through overpressure.
z The boiler block must not be connected to
the heating system pipework during the
pressure test.
z Slowly fill the boiler block with water via the fill and
drain connection. Vent the boiler block via the boiler
flow connection with air vent.
4.9.2

Carry out a pressure test

Carry out a pressure test with a test pressure of 8.6 bar
(in accordance with the requirements of the European
Pressure Vessel Directive).
Use a pressure gauge class 1.0 to measure the pressure.
V Drain water via fill and drain valve (Æ Fig. 23, [1],
page 21) prior to connecting the water systems or if a
hub joint is leaking.
4.9.3

Leaking hub joints

If leaking hub joints are detected during the pressure test,
proceed as follows.
z Remove feed pipe and outer steam tube.
V Undo nuts on anchor rods and remove anchor rods.
V Separate the boiler block at the leak location by driving
(knocking) in flat wedges or chisels between the sec-
tions at the points provided at the top and bottom
(Æ Fig. 25).
V It is vital that a new nipple and packing cord are used
during reassembly.
V Pull the boiler block together again using the boiler
compression tool.
V Repeat the leak test.
22
Fig 25 Separating the boiler block
Logano GE615 - We reserve the right to make any changes due to technical modifications.