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

11 System start-up

You can connect control panels of the 4000 series to the
Logano G315. The commissioning process for the
different types of control panel is the same.
NOTICE: The boiler can be damaged
through heavy dust deposits!
B Do not operate the boiler where heavy
dust contamination persists, e.g. through
building work inside the boiler room.
B Complete the commissioning log (
page 39).

11.1 Filling the system

NOTICE: Risk of system damage from
temperature stresses.
B 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.
Overall boiler output Ca (HCO
MBH (kW)
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)
Tab. 12 Requirements for fill, make-up and boiler water
3
1) 1 ft = 7.48 gal
Logano G315 - Subject to technical modifications
Chapter 11.6,
) concentration /
3 2
1)
grains per gallon ppm
≤ 11.7 (≤ 2.0)
≤ 8.8 (≤ 1.5)
> 11.7 (> 2.0)
> 8.8 (> 1.5)
Maximum fill and make-up water quantity
3
V / ft ( m³)
max
V = three times system volume
max
Q MBH
----------------------------------------------- -
= , ×
V 0 0243
max
(
Ca HCO
-------------------------------------------------
= , ×
V 0 0313
max
(
Ca HCO
System start-up
Boiler water
pH value
( )
gr
------ -
)
3
2
gal
( )
Q kW
mol
---------
)
3
2 3
m
11
8.2–9.5
8.2–9.5
37