ACV EVO S 100, Installation, Use And Maintenance Instructions, Page: 8 / 154

EVO S
, Installation, Commisioning and Servicing Instructions
EN
8
1.5. Water characteristics
The following rules apply once the boiler is put into service and remain valid
until the end of life of the product.
WARNING: It is forbidden to use water containing glycol.
1.5.1. Preparing the water system before putting the boiler into service
This is covered by ICOM (listed in Safety section).
Any installation must be thoroughly flushed and cleaned before it can be
filled and used. ICOM’s comprehensive guide deals with all aspects of water
treatment for commercial heating systems.
1.5.2. Protecting the unit against scaling
Water naturally contains dissolved calcium ions and carbonates that cause
scaling (calcium carbonate) to form. To prevent excessive deposits, take
precautions with regard to the water used to fill the unit .
Water must be added during the life of the boiler. The new water adds scaling
to the water system. The amount of fill water and the amount of make-up
water added throughout the unit’s lifecycle must not be more than three times
the water capacity of the heating system. Also, the hardness of the make-up
water must be controlled. Make-up water.
Adding a large amount of untreated water always contributes
a significant amount of scaling. To monitor this and to
detect problems, a system water meter must be installed.
Failure to comply with these guidelines (such that the fill water plus the make-
up water is more than three times the water capacity of the heating system)
requires a full cleaning (to remove sludge and scaling) to be performed.
WATER TREATMENT CENTRAL HEATING
The range of boilers have a stainless steel heat exchanger.
IMPORTANT. use of non-recommended inhibitors may impact boiler
warranty
ACV recommend Water Treatment in accordance with the Benchmark
Guidance Notes on Water Treatment in Central Heating Systems.
If water treatment is used ACV recommend only the use of SCALEMASTER
SM-1 PRO, FERNOX, MBI, ADEY MC1 or SENTINEL X100 inhibitors and
associated water treatment products, which must be
used in accordance with the manufacturers’ instructions.
Notes:
1. It is most important that the correct concentration of the
water treatment products is maintained in accordance with the
manufacturers’ instructions.
2. If the boiler is installed in an existing system any unsuitable