Lochinvar FTXL FTX400N Manuel D'installation Et De Fonctionnement page 57

10
Démarrage
Nettoyage pré-commissaire
Do not use petroleum-based cleaning or
CAUTION
sealing compounds in the boiler system.
Gaskets and seals in the system may be
damaged. This can result in substantial
property damage.
1. Prior to fill and start-up, flush the entire heating system.
2. Clean the entire heating system with an approved pre-
commissioning cleaner (comparable to Sentinel X300
and Fernox F3) in accordance with the manufacturer's
recommendation to remove debris and prolong the life of
the heat exchanger.
3. Clean all water filtering devices in the system.
4. Flush the cleaning solution out of the entire system and
refill.
Check/control fill water chemistry
Conduct water quality testing prior
IMPORTANT
to installing the appliance.
solutions are available to adjust water
quality.
DO NOT use "homemade cures" or
CAUTION
"boiler patent medicines".
damage to boiler, personnel, and/or
property may result.
The manufacturer recommends the following for properly
filling your boiler with the appropriate water chemistry for
closed loop boilers. Good boiler water quality will help
extend the life of the appliance by reducing the effects of lime
scale build-up and corrosion in closed loop systems.
Boiler Water / Make-Up Water Hardness
and System Volume
Table 10A provides guidelines for the maximum allowable
hardness levels for both the boiler water and the make-up
water based on the system volume. There are two (2) levels
of allowable hardness depending on the size of the system.
These levels are to be chosen based on the smallest boiler size
in the system.
Table 10A Boiler Water and Make-Up Water Total
Hardness Specifications
Level I
System Volume
≤ 1,000 gal
Total Hardness ≤ 12 gpg
1. Initial system fill must meet the recommended values
of hardness for boiler water / make-up water. This may
require water treatment such as using demineralizers.
2. During the life of the boiler system, the sum of the total
system fill and make-up water quantities should not
exceed three (3) times the system volume.
3. Consult local water treatment companies for hard water
areas (above the values listed in Table 10A). Hardness
levels that are above the values listed in Table 10A can
lead to lime scale build-up throughout the boiler system.
Additional Boiler Water and Make-Up
Water Specifications
Table 10B Additional Boiler Water and Make-Up
Water Specifications
Total Dissolved Solids
pH Level
Chlorides
Chloride Concentration
1. Do not fill boiler or operate with water containing chlorine
in excess of 150 ppm.
2. Do not use the boiler to directly heat swimming pool or
spa water.
Iron Concentration
1. Do not fill boiler or operate with water containing iron in
Various
excess of 0.3 ppm.
Total Dissolved Solids (TDS)
1. Total dissolved solids are all minerals, salts, metals, and
Serious
charged particles that are dissolved in water.
2. The greater the amounts of TDS present, the higher the
corrosion potential due to increased conductivity in the
water.
Additional Considerations
1. Monitoring pH, chlorides, TDS, and hardness levels can
prolong the life of the appliance by reducing lime scale
build-up, corrosion, and erosion. Check for leaks to
ensure that fresh water is not entering the system.
2. Continual fresh make-up water will reduce boiler life.
3. Mineral build-up in the heat exchanger reduces heat
transfer, overheats the stainless steel heat exchanger, and
causes failure.
4. The addition of oxygen carried in by make-up water can
cause internal corrosion in the system components.
5. Leaks in the boiler or piping must be repaired at once to
prevent excessive make-up water. For this purpose, it is
recommended to install a water meter to easily check the
Level II
amount of make-up water entering the system. Make-up
> 1,000 gal water volume should not exceed 5% of the total system
volume per year. NOTE: When make-up water is added,
≤ 9 gpg
make sure the chemical additives are added to maintain
the correct level.
6. An approved multi-metal corrosion inhibitor (comparable
to Sentinel X100 or Fernox F1) is recommended at the
correct concentration and in the manner recommended
by the manufacturer.
Manuel d'installation et de fonctionnement
Boiler Water Make-Up Water
≤ 1,000 ppm
6.5 - 9.5
< 150 ppm
< 350 ppm
57