System Start-Up; Filling The System; Commissioning The System; Start Up The Control Panel - Buderus Logano G315 Installation And Service Instructions Manual

11

System start-up

You can connect various control panels to the Logano G315. The
commissioning process for the different types of controls is similar.
NOTICE: The boiler can be damaged through heavy dust
deposits!
▶ Do not operate the boiler where heavy dust
contamination persists, e.g. through building work
inside the boiler room.
▶ Complete the commissioning log ( Chapter 11.6, page 32).
Overall boiler output Ca (HCO3)2 concentration /
MBH (kW) grains per gallon
341 < Q 1,194
(100 < Q 350)
1,194 < Q 3412
(350 < Q 1000)
341 < Q 1,194
(100 < Q 350)
1,194 < Q 3412
(350 < Q 1000)
Table 12 Requirements for fill, make-up and boiler water
1) 1 ft3 = 7.48 gal
11.2

Commissioning the system

Observe the following when commissioning:
▶ Purge your heating system via its radiators prior to commissioning.
▶ Check that the hot gas baffle plates are inserted correctly
( Chapter 7.8.3, page 20).
Fig. 58 Check position of flue gas baffles
11.3

Start up the control panel

Please see the accompanying technical documentation for the 4000
series control panel you are using for information on how to start it up.
Logano G315 – 6 720 817 939 (2017/02)
1)
ppm
11.7 (2.0)
8.8 (1.5)
> 11.7 (> 2.0)
> 8.8 (> 1.5)
6 720 817 939-01.1T
11.1

Filling the system

NOTICE: Risk of system damage from temperature
stresses.
▶ During operation, only fill the heating system via the
fill valve on the system side.
Refer to the table below for information about correct use and treatment
of the fill and make-up water.
The pH value of the boiler water increases after the heating system has
been filled. After 3 – 6 months (at the time of the first service), check
whether the pH value of the boiler water has stabilized.
Maximum fill and make-up water quantity
Vmax / ft3 ( m³)
V = three times system volume
max

Q MBH
 
V = 0 0243 -------------------------------------------- -
max

Ca HCO

Q kW
 
 V = 0 0313 ---------------------------------------------- -
max


Ca HCO


11.4

Initial burner start-up

▶ When commissioning the burner, follow the installation and
maintenance instructions enclosed with the burner.
▶ Fill out the commissioning log in the burner documentation.
If you notice when taking measurements for the commissioning log that
the flue gas temperature is too low for the vent pipe (risk of
condensation), you can raise the flue gas temperature
( Chapter 11.5, page 31).
11.5

Raising flue gas temperature

With a new boiler, the flue gas temperature when the boiler temperature
is 176 °F (80 °C) will be around 320 – 356 °F (160 – 180 °C),
depending on the boiler rating.
In two-stage operation the temperature of the flue gas is lower.
You can increase the flue gas temperature further by removing individual
hot gas check plates and hot gas baffle plates or combinations of these.
You should only consider modifying the hot gas check
plates as a last resort as once you have reduced the size
of the hot gas check plates you cannot change this back.
▶ Take the boiler out of operation in accordance with the operating
instructions.
You can increase the temperature of the flue gas by carrying out the
following measures.
System start-up
Boiler water pH value
8.2–9.5
8.2–9.5

 gr 

------ -
 
3
2
gal

 

mol
 


--------- -
 
3 
2
3
m

11
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