Checking For Leaks - Buderus Logano GE615 Installation And Maintenance Instructions Manual

7.5 Filling the heating system and

checking for leaks

Before commissioning the heating system, check for
leaks to prevent problems during operation. Pressurise
the heating system to 1.3x bar permissible operating
pressure (observe the safety pressure of the safety valve).
V On sealed systems the pressure gauge needle
(Fig. 68 Item 2) must be within the green range
(Fig. 68, Item 3). Set the red needle (Fig. 68,
Item 1) on the pressure gauge to the required
system pressure.
z Check the system water pressure.
V
Caution: System damage
through over pressure during leak testing.
Pressure, control and safety equipment may
be damaged through excessive pressure.
z When you carry out a leak test, make sure
that no pressure, control or safety equipment
is fitted which cannot be isolated from the
boiler water chamber.
z Shut off the pressure expansion vessel from the system
by closing the cap valve.
V Check the connections and pipework for leaks.
z Open the mixing and shut-off valves on the hot water
(primary) side.
V Fill the system via an approved filling link.
7.5.1 Filling the heating system
Filling and refilling of the heating circuit must been carried
out by a method that has been approved by the Water
Regulation Advisory Scheme (WRAS), for the type of hea-
ting appliances, i.e. Domestic (in-house) Fluid Category 3.
Non-Domestic (other than in-house) Fluid Category 4.
Depending on the Fluid Category the approved method
should comprise of the following:
1 Requirements Fluid Category 3 systems
(Fig. 69 see right)
z Control valve (stop valve) including a Double check
valve on the mains cold water supply pipe
z Temporary connection to e removed after filling (filling
loop)
z Control valve (stop valve) on the heating system pipe-
work
Logano GE615 - We reserve the right to make any changes due to technical modifications.
Heating system inspection and maintenance
Fig 68 Pressure gauge for sealed systems
1 Red needle
2 Pressure gauge needle
3 Green range
V
SYSTEM FILL SYSTEM FILL
Heating return Heating return
Hose Hose
return return
Stop Stop
cock cock
Temporary hose Temporary hose
Fig 69 Requirements Fluid Category 3 systems
6304 4901-04.0K
Non return Non return Non return Non return
valve valve valve valve
Mains Mains
supply supply
Stop cock Stop cock
Test cock Test cock
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