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20 | Notes on installation and operation
The following anti-freeze fluids and concentrations have been approved:
Chemical Name
Nalco (Varidos) FSK
Fernox Alphi 11
Intercool NFP-50 AA
Antifrogen N
NoBurst AL
Table 8 Anti-freeze
Corrosion inhibitors
The following anti-corrosion agents are approved:
Chemical Name
Fernox F1
Nalco 77381
Sentinel X 100
Table 9 Corrosion inhibitors
▶ System fluid pH must be maintained between 7 and 8.5 to prevent
system damage.
▶ Use only untreated water to fill the system.
▶ Do not use TSP (tri-sodium phosphate).
▶ Do not use fill water treated with salt bedding type exchangers (ion
exchanger).
▶ Never introduce non-approved boiler treatment or similar additives.
▶ Only use fill water with a hardness below 7 grains.
▶ Filling with chlorinated water is acceptable if chlorine levels are
below 100 ppm.
▶ Do not use inhibitors or other additives unless listed in this
document.
▶ Consult a local water treatment specialist for recommendations if any
of the above is outside the stated ranges.
▶ When using oxygen permeable PEX, the system must be separated
from the boiler by a heat exchanger.
▶ A correctly sized and working expansion vessel must be installed.
▶ Do not exceed the maximum permissible fl ow rate through the boiler.
Excessive flow can cause erosion damage to the heat exchanger.
▶ Eliminate leaks in the system
Continually topping up the system constantly adds oxygen to the
heating water, causing corrosion damage. All system leaks must be
repaired.
Boiler sealer
This boiler is not approved for use with boiler sealer.
LPG
To protect the appliance against high pressure (ANSI/Z223.1/NFPA54
(National fuel gas code) or CAN/CSA B 149.1 (Natural Gas and Propane
installation code)):
▶ Install a pressure regulator with a safety valve.
6720872361 (2017/04)
Concentration
22 - 55 %
Observe manufacturer's
instructions
0 - 39 %
Observe manufacturer's
instructions
0 - 55 %
Concentration
Observe manufacturer's
instructions
1 - 2 %
1.1 %
6.1.2
Other important information
• The installation of this boiler must comply with all national and local
code and regulations.
• Only operate this boiler with the combined air/flue system
specifically designed and approved for it.
• Use only approved venting systems per the manufacturer's
instructions.
• Do not dispose of untreated boiler condensate in septic systems.
• Inspect the sewer pipes for suitability before disposing of untreated
boiler condensate in them.
• Verify with the local authority that disposing of untreated boiler
condensate into public sewer systems is permitted.
6.2
Selecting an external expansion vessel
▶ Determine the size of the expansion vessel in compliance with local
laws and regulations.
Fig. 10 Example of installation of an external expansion vessel
6.3
Selecting the installation location
Installation location requirements
Observe the current national and local codes and regulations.
▶ Observe country-specific requirements.
▶ Observe installation instructions of the venting system accessories
and their clearances.
Combustion air
To avoid corrosion, keep the supply of combustion air free of corrosive
substances; contained in solvents, paints, adhesives, propellants and
domestic cleaning agents.
Industrial sources
Chemical cleaning
Trichloroethylene, tetrachloroethylene, fluorinated
hydrocarbons
Degreasing bath
Perchloroethylene, trichloroethylene,
methylchloroform
Printing shops
Trichloroethylene
Hair salons
Aerosol propellants, hydrocarbons containing fluorine
and chlorine (difluorodichloromethane)
6 720 641 933-20.3O
Greenstar combi 100 p / 151 p
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