Lovato T_FAST-I 20 Instructions Relatives À L'installation, L'utilisation Et La Maintenance page 17

!
For installations of domestic hot water provide for a filter to protect the safety of
the systems. It is suggested to install a check valve and an expansion in AFS line
as shown in par. 5
In presence of water with hardness above 25 ÷ 30 ° Fr, is prescribed an appropri-
ate treatment of the heating water, in order to avoid limescale problems. It should
be noted that even a small quantity of limescale, could reduce the performances
of the domestic side.
The materials of construction are in compliance with the Directive 98/83 EC.
Despite the fittings are mounted at the factory, it is advisable to monitor all screw
connections. Equally important is to do a pressure test during the operation.
Exceeding above listed limits may cause damages to T_FAST-I module and impair
warranty terms consequently
DHW Outlet
Example of application: assembling on a wall
22004010 - 05.13
4. Hydraulic connections
IMPORTANT
Primary return
DCW inlet
Boiler
DHW Outlet
Primary return
Assembling instructions and maintenance
DESCRIPTION
PH
Saturation factor(delta PH))
Total hardness
Conductivity
Sediments
Clorine
Hydrogen sulphide
Ammonia
Hydrogen carbonate
Hydrogen carbonate / sulphide
Sulphide
Nitrate
Nitrite
Sulphate
Manganese
Free iron
Free carbon dioxide
5. Applications
Example of application: assembling on a boiler
Circulation
Circulation
Primary delivery
Energy supplier
T_FAST-I 20
DCW
LIMIT vALuES FOR COPPER SOLDERED
uNIT
HEAT EXCHANGER
pH 7-9 (including saturation factor)
pH -0.2<0<+0.2
°Fr 15-30
µS/cm 10...500
mg/l <30
mg/l <0.5
mg/l <0.05
mg/l <2
mg/l <300
mg/l >1.0
mg/l <1
mg/l <100
mg/l <0.1
mg/l <100
mg/l <0.1
mg/l <0.2
mg/l <20
Primary delivery
DHW Outlet
DCW
Boiler
Primary delivery
T_FAST-I 20
Primary return
17