FREQUENCY OF MANDATORY CHECKS in accordance with UNI CTI 8065/89
| TYPE OF SYSTEM | WATER HEATING SYSTEM | LOW-PRESSURE STEAM (< 1 Bar) |
OVERHEATED WATER (< 180 °C) |
DOMESTIC HOT WATER | NOTES |
|---|---|---|---|---|---|
| Appearance | 2A-3A | 1B-3B | 2A-3B | ||
| pH | 3A | 1B-3B | 3B | ||
| Total Hardness | 2B | 1C | 2C | 1A | |
| Dry residue | 3A | 3B | Can be replaced by the measure of electrical conductivity | ||
| Electrical conductivity | 3A | 3B | |||
| Iron | 3A | 1A-3A | 3B | ||
| Alkalinity | 3C | 3B | |||
| Chemical conditioning | 3A | 3C | 3C | In domestic water production plants, if the use of a chemical conditioner is provided, check its regular consumption | |
| Copper | 3A | 1A-3A | 3B | Not required if there are no copper components | |
| ANALYSIS FREQUENCY | SAMPLING POINTS 1) Feed water, 2) Replenishment water, 3) Boiler water FREQUENCY A) Twice a year, B) Once a month, C) Once every 15 days, D) Once a week |
||||
N.B. As you may have noticed, sometimes problems combine and only an in depth chemical analysis can help determine the specific cause of the problem as well as its solution. The Technical Service of Facot Chemicals can carry out the first routine analyses as well as offer a more exhaustive service called “Check Service” aimed at determining the different parameters among which the presence of metals, the pH value, the alkali reserve besides other necessary analysis to help solving the problem.
WATER TREATMENT IN DOMESTIC HEATING SYSTEMS
Italian Ministerial Decree DM 192 of 06 March 2005/DPR 59 of 02 April 2009
| System | Capacity | Water hardness | OBLIGATIONS |
|---|---|---|---|
| HEATING SYSTEM | ≥ 350 Kw | ≤ 15 °f ≥ 15 °f |
Filter + film forming product Filter + softener + film forming product |
| SYSTEM | ≤ 100 Kw ≥ 100 Kw ≤ 350 Kw |
≥ 25 °f ≥ 25 °f |
Chemical (film forming) conditioner Softener + film forming product |
| SANITARY INSTALLATION | ≤ 100 Kw ≥ 100 Kw ≤ 350 Kw |
≥ 15 °f ≥ 15 °f |
Food-grade chemical conditioner (polyphosphates) Softener |