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Annex A System water additives
When the lling water requirements as referred to in chapter Water Quality have been met, certain additives are
allowed for the below mentioned applications and related dosage. Warranty on ATAG delivered installation products
expires, if these additives and concentrations are not used in accordance with this annex.
Additive type Supplier and specications Max. concentration Application
Corrosion inhibitors ATAG Central Heating Protector.
Build Cert Approved
500 ml / 100 litres Suitable for mixed metal and
plastic systems. Prevents
corrosion and limscale.
Sentinel X100 Corrosion resistant
protection agent of CH systems
Kiwa certied
1-2 l/100 litres CH water content Aqueous solution of organic
and inorganic agents preventing
corrosion and scale forming
Fernox F1 Protector Corrosion
resistant protection agent of CH
systems
Kiwa certied KIWA-ATA K62581,
Belgaqua certied Cat III
500 ml can or 265 ml Express /
100 litres CH water content
Preventing corrosion and scale
forming
Anti-freeze Kalsbeek
Monopropyleneglycol / propane-
1,2-diol
+ inhibitors
AKWA-Colpro KIWA-ATA Nr.
2104/1
50% w/w Anti-freeze
Tyfocor L
Monopropyleneglycol / propane-
1,2-diol
+ inhibitors
50% w/w Anti-freeze
Sentinel X500
Monopropyleneglycol + inhibitors
Kiwa certied
20-50% w/w Anti-freeze
Fernox Alphi 11
Monopropyleneglycol + inhibitors
Kiwa certied KIWA-ATA K62581,
Belgaqua certied Cat III
25-50% w/w Anti-freeze in combination with F1
Protector
System cleaners ATAG Central Heating Universal
Cleaner
500 ml / 100 litres Suitable for mixed metal and
plastic systems. Disperses sludge,
limescale and other deposits.
Sentinel X300
Solution of phosphate, organic
heterocyclic compounds, polymers
and organic bases
Kiwa certied
1 litre / 100 litres For new CH installations Removes
oils/grease and ow control
agents
Sentinel X400
Solution of synthetic organic
polymers
1-2 litres / 100 litres For cleaning existing CH-
installations Removes sediments.
Sentinel X800 Jeto
Aqueous emulsion of dispersants,
moistening agents and inhibitors
1-2 litres / 100 litres For cleaning new and existing CH-
installations Removes iron and
lime-related sediments.
Fernox F3 Cleaner
Liquid pH neutral universal
cleaner for pre-commissioning
new systems
500 ml / 100 litres For cleaning new and existing
CH-installations Removes sludge,
limescale and other debris.
Fernox F5 Cleaner, Express
pH neutral universal cleaner
concentrate for pre-commissioning
new systems
295 / 100 litres For cleaning new and existing
CH-installations Removes sludge,
limescale and other debris.
ATAG support the use of inhibitors suitable for mixed metal applications that keep the pH level between 6 and 8.
Dosage levels as per manufacturers instructions. Preferred inhibitor suppliers are ATAG Heating Technology,
Fernox and Sentinel.