14
2. PRELIMINARY INSTALL GUIDE
Damage caused by lack of water in the system is not covered by product warranty
PRELIMINARY INSTALL GUIDE (CONTINUED)
4. COOLING COIL
To ensure smooth operation and user’s comfort, the Multivision Hydro 80 fireplace insert is equipped
with a copper cooling coil aimed to prevent the water in the water system from boiling. At the inlet of
the coil a thermostatic valve needs to be installed to allow for the water from the water mains to flow
through it once the heating water reaches 97°C. This will lower the water temperature to avoid boiling.
When the temperature reaches 92°C, the valve closes off the water flow through the coil.
This solution extends the life of all devices in the system which are vulnerable to boiling water.
IMPORTANT:
The installation of the insert equipped with a cooling coil does not exclude the application
of safety devices which comply with the norm in the case of the open system vessel, and in the case of
a closed system of the diaphragm expansion vessel, the application of a safety valve and thermostatic
valve on the coil.
The installation of the cooiling coil is essential for the correct operation of the appliance.
IMPORTANT:
Installation of the equipment in a closed system in buildings which are equipped with
their own water supply systems (water wells) is not recommended, since in the event of a power cut the
system does not provide water necessary to collect excess heat from the device. The same refers to
places where water supply from the mains is erratic. In this case, installing the insert in an open system
is highly recommended.
IMPORTANT:
In the case of installing the insert in a closed system, a closed diaphragm expansion
vessel and a safety valve should be applied 1.5 bar. The safety valve should have a diameter of 1” and
the opening pressure of 1.5 bar.
The system is to be equipped with an automatic water replenishment valve to protect the installation
against the possibility of the safety valve switching on resulting in water being removed from the
system and not being replenished. If this were the case, the system would be burning dry which could
cause severe damage to the internal components.
To ensure proper operation of the cooling coil, adequate water flow is essential. See the table below for
details:
