Buderus Logano G315 User Manual

2
Product description
G315 – 6 720 817 940 (2017/02) 5
Water quality requirements
All water contains substances, e.g. Ca (HCO
3
)
2
(calcium hydrogen
carbonate) that could affect the operation of your heating system. These
can cause corrosion, scale formation or deposits potentially affecting
the system's service life and/or system efficiency.
To ensure your heating system always operates economically, properly
and safely, not to mention in an energy-efficient manner, we recommend
that you regularly monitor the quality of the fill and make-up water and
treat it accordingly as and when necessary.
For the correct use and treatment of the fill and make-up water, the
contents of the following table MUST be observed.
2.4 The correct fuel
To ensure it operates properly, the heating system requires fuel of the
correct type and grade.
NOTICE: System damage from corrosion or scale
formation as the result of using fill and make-up water
that does not conform to the system-specific
requirements.
▶ Ask your trained and certified installer or local water
company what the concentration of Ca (HCO
3
)
2
(calcium hydrogen carbonate) is in your area.
▶ If the fill and make-up water does not meet system-
specific requirements, it will have to be treated.
Consult your trained and certified installer if this is
the case.
Overall boiler output
MBH (kW)
Ca (HCO
3
)
2
concentration /
grains per gallon (mol/ppm)
Maximum fill and make-up water quantity
V
max
/ gallon ( m³)
Heating water
pH value
341 < Q 1,194 (100 < Q
350)
11.7 (200) V
max
= three times system volume 8.2–9.5
1,194 < Q 3412 (350 < Q
1000)
8.8 (150)
341 < Q 1,194 (100 < Q
350) > 11.7 (> 200)
8.2–9.5
1,194 < Q 3412 (350 < Q
1000)
> 8.8 (> 150)
Table 2 Requirements for fill, make-up and heating water
V
max
0 1818
QMBH
Ca HCO
3

2
gr
gal
---------


------------------------------------------------------
V
max
313
QkW
Ca HCO
3

2
ppm
----------------------------------------------------------
=


=
NOTICE: Risk of system damage from use of incorrect
fuel.
▶ Only use the fuel specified. The correct fuel is
entered in  Tab. 3 by the heating contractor.
Use the following fuel:
Stamp/Signature/Date
Table 3 Fuel to be used (entered by heating system installer)
We recommend you seek the advice of your system
installer if you intend changing the fuel for your system.

Buderus Logano G315 Specifications

General

Brand	Buderus
Model	Logano G315
Category	Boiler
Language	English