Filling The Heating System And Checking For Water Leaks - Buderus LOGANO PLUS GB312 Installation Instructions Manual

A condensate neutralizer is available as an accessory.
▶ Install the neutralizer according to the installation
instructions.
▶ Fit the trap supplied to the condensate pan drain
outlet.
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6
3
Fig. 27 Installing the condensate drain
[1] Siphon
[2] Condensate pan
[3] Trap outlet to neutralizer/waste pipe
[4] Trap vent
[5] Blanking cap
[6] Hole for condensate drain hose
Condensate may possibly escape through the trap vent
hole.
▶ Be sure to run the drain pipe from the trap so that it
slopes downwards.
DANGER: Danger of fatal accident due to poisoning.
▶ The boiler's internal trap must be used, make sure
that the condensate from the flue system drains
correctly.
Logano plus GB312 – 6 720 647 367 (2012/11)
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5
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7 747 010 720-23.1RS
6.10 Filling the heating system and checking for water
leaks
To ensure that leaks do not occur when the system is in operation, check
for leaks before commissioning the heating system. Pressurize the
heating system with a pressure equal to the response pressure of the
pressure relief valve.
CAUTION: Risk of system damage due to scale
formation in the boiler.
▶ Refer to the information provided in the "Water
quality requirements for Logano plus GB312"
manual.
CAUTION: Risk of system damage due to excess
pressure when testing for leaks!
Pressure, control and safety equipment may be
damaged by excessive pressure.
▶ When you carry out a leakage test, make sure that no
pressure, control or safety equipment that cannot be
isolated from the boiler water chamber is installed.
▶ Carry out the leakage test according to the local regulations.
Fig. 28 Pressure/temperature gauge
CAUTION: System damage
If you fill the heating system when it is hot, the resulting
temperature stresses can cause stress cracks. The
boiler will then leak.
▶ Only fill the heating system when cold (the supply
temperature should be no more than 104 °F).
▶ When the heating system is in operation, do not fill it
via the boiler fill & drain valve. Instead, use the filler
valve in the heating system pipework (return).
▶ Pay attention to the water quality as specified in the
"Water quality requirements for Logano plus GB312"
manual, and record the volume and quality of the
water used to fill the system.
▶ Open the mixing and shut-off valves on the heating water (primary)
side.
6
Installing the boiler
7 747 010 720-24.2RS
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