Filling Heating System And Checking For Leaks - Buderus Logano plus GB312 Installation And Service Instructions Manual

6
Installing the boiler
A condensate neutralizer is available as an accessory.
▶ Install the neutralizing system in accordance with the
installation instructions.
▶ Install the trap supplied to the condensate pan drain
outlet.
2
6
3
Fig. 27 Installing the condensate drain
[1] Siphon (condensate trap)
[2] Condensate pan
[3] Siphon outlet to neutralizing system or drain line
[4] Siphon vent
[5] Cap
[6] Hole for condensate drain hose
Condensate may possibly escape through the vent.
▶ Be sure to run the drain pipe from the siphon so that
it slopes downwards.
DANGER: Danger of fatal accident due to poisoning!
▶ It is essential that you use the boiler's built-in siphon.
▶ Make sure that the condensate from the flue system
drains correctly.
26
1
5
4
1
7 747 010 720-23.1RS
6.10

Filling heating system and checking for leaks

Before commissioning the heating system, check it for soundness to
avoid leaks occurring during operation. Pressurize the heating system
with a pressure that is slightly less than the response pressure of the
pressure relief valve.
pH requirements
• The optimal range of pH for the boiler system fluid is 7.0 to 8.5.
• pH must be checked and recorded at each yearly maintenance in
order to keep the warranty valid.
• Failure to do so will immediately void the warranty on the heat
exchanger.
• Adjusting pH if it is out of range (7.0ph to 8.5pH)
– Flush system with fresh municipal water, run the system up to
temperature for an hour and check pH OR
– Add Rhomar Protek 922 to the system at a volume of 1 gallon of
Protek 922 to 25 gallons of system volume.
CAUTION: Risk of system damage due to scale
formation in the boiler!
▶ Heed the information provided in the
"7747010721_GB312_Water Quality
Requirements.pdf"
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 leak test, make sure that no
pressure, control or safety device that cannot be
isolated from the boiler's water chamber is installed.
▶ Carry out a leak test in accordance with local authority having
jurisdiction regulations.
Fig. 28 Pressure/temperature gauge
Logano plus GB312 – 6 720 806 273 (2013/01)
7 747 010 720-24.2RS