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7 . Hydraulic connection
7 .1 Connection to system pipes
The hydraulic connection can be made either with system pipes from the
wall or from the floor. Install the suitable unit shut-off valves. Proceed as
follows:
1.
Remove the protective caps from the connectors.
2.
Connect system pipes using a G1/2" swivel nut and the gasket
supplied with the kit.
Perform the inlet/outlet connections as shown in the figure.
GAS
1/2" M
IN
OUT
A 3-way bypass solenoid valve is also provided as an optional kit. Please
refer to the kit instructions for further details.
IN
GAS
1/2" M
OUT
All the pipes must be insulated with insulation not less than 9mm thick.
Also insulate the fittings and hoses connecting the valves and the radiator
front panel for about 15 cm on the valve side. The insulating sheath must
be fixed and closed with tape without leaving empty spaces.
7.2 Using a "Y" filter
It is advisable to use a Y filter on the unit delivery to prevent any impurities
in the circuit from entering and depositing inside the heat exchanger.
Be sure to install the filter opening and purging system facing down.
To ensure easy maintenance and cleaning of the filter, it is advisable to
install a check valve downstream the filter and a closing valve upstream
it.
7 .3 Condensate drain connection
Connect the drain pipe to the condensate collection tray using the pipe
clamp.
The condensate drainage system must be installed with a suitable slope
to ensure the correct flow of condensate to the drain.
Connect to the drain
To check that the condensate is drained correctly, slowly
pour a small amount of water into the condensate
collection tray and check that it flows slowly and
continuously towards the drain. If necessary, adjust the
slope.
7 .4 Venting
Once installation is complete, proceed as follows to vent the unit circuit.
1.
Open the flow and return valves so that the water flows inside the
circuit.
2.
Vent the circuit by opening the valve in the indicated position. Close
the valve when there is no more air leakage.
- 20 -
Flow pipe
Closing valve
Y filter
Safety valve
Connect to the basin
Cod. 1910000000085 - nv02
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