Install a drainage valve at the lowest point on the tank.
n
Isolating valves
Hydraulically isolate the primary and secondary circuits using stop
valves to facilitate maintenance operations on the unit. The valves
make it possible to carry out maintenance on the tank and its
components without draining the entire installation.
These valves are also used to isolate the tank unit when conducting
a pressurised check on the leak tightness of the installation if the test
pressure is greater than the admissible operating pressure.
CAUTION
If the mains pipes are made of copper, fit a sleeve made
of steel, cast iron or any other insulating material between
the tank's hot water outlet and the pipes to prevent
corrosion to the connection.
n
Connecting the domestic cold water
Make the connection to the cold water supply according to the
hydraulic installation diagram.
¼
Refer to the installation and maintenance instructions of the
boiler
Install a water drain in the boiler room and a funnel-siphon for the
safety unit.
The components used for the connection to the cold water supply
must comply with the prevailing standards and regulations in the
country concerned. Fit a one-way valve to the domestic cold water
circuit.
Make the connection to the cold water supply according to the
hydraulic installation diagram.
¼
Refer to the installation and
maintenance instructions of the boiler
Install a water drain in the boiler room and a funnel-siphon for the
safety unit.
The components used for the connection to the cold water supply
must comply with the prevailing standards and regulations in the
country concerned. Fit a one-way valve to the domestic cold water
circuit.
n
Pressure reducer
If the mains pressure exceeds 80% of the valve or safety unit setpoint
(e.g.: 5.5 bar for a safety unit set at 7 bar), a pressure reducer must
be fitted upstream of the appliance. Install the pressure reducer
downstream the water meter in such a way as to ensure the same
pressure in all of the installation pipes.
n
Measures to take to prevent hot water flow reversal
Fit a one-way valve to the domestic cold water circuit.
4. Installation
160 SL
17
15/03/2012 - 300026901-001-C
