Approved Corrosion Inhibitors And Anti-Freeze Fluids For Central Heating Water - Worcester ZSBR 7-28 ICS1 Service Booklet

Appendix
5.4

Approved corrosion inhibitors and anti-freeze fluids for central heating water

Manufacturer
With all anti-freeze fluids and corrosion inhibitors, it is extremely important to observe the manufacturer's recom-
mended concentration levels and to check the concentration regularly.
In the case of anti-freeze fluids, it should be noted that the efficiency of fluid-to-fluid heat transfer diminishes as
the anti-freeze concentration increases.
Anti-freeze fluid
Hüls
Tyforop Chemie
GmbH, Hamburg
Schilling Chemie
Hoechst
Fernox
BASF
Corrosion inhibitor
Schilling Chemie
Schilling Chemie
Schilling Chemie
Benckiser
Wassertechnik
Geminox,
Frankreich
Betz Dearborn,
Belgien
Fernox
Cillit Wassertechnik
Other additives
Fernox
Fernox
Table 8
48
Description Remarks
Ilexan E Anti-freeze fluid, equivalent to Antifrogen N.
Tyfocor L Anti-freeze fluid based on propylene glycol.
Varidos FSK Anti-freeze fluid based on ethylene glycol with
good corrosion-inhibiting properties. Also suitable
for aluminium.
Antifrogen N Anti-freeze fluid based on ethylene glycol with
good corrosion-inhibiting properties.
Alphi-11 Anti-freeze fluid with corrosion inhibitor, also suit-
able for aluminium.
Glythermin NF Anti-freeze fluid based on ethylene glycol with
good corrosion-inhibiting properties, also suitable
for aluminium.
Varidos KK Corrosion inhibitor
Varidos 1+1 Corrosion inhibitor
Varidos AP Corrosion inhibitor, also suitable for aluminium.
Randophos HS Corrosion inhibitor
Universal
Inibal Corrosion inhibitor, suitable for aluminium.
Sentinel X 100 Corrosion inhibitor for hot water heating systems,
also suitable for aluminium.
Copal Corrosion inhibitor, also suitable for aluminium.
Cillit-HS Combi Corrosion inhibitor
Restorer Superfloc Cleaning agent (for sludge removal), also suitable
Universal Cleanser for aluminium.
Superconcentrate Reduces limescale precipitation, also suitable for
Central heating aluminium.
Protector
Mixing
concentra–
tion % by
weight
25-80
22-55
20-40
20-62
0,5
1-2
1-2
1-2
1,1
1
0,5
1-2
7 181 465 347 (01.07)