MCZ Athos HYDRO 14 kW - Manual (Page 54)

PELLET STOVES Chapter 4
INSTALLATION AND USE MANUAL page
54
Operation Technical service - Rights reserved MCZ S.p.A. - Reproduction prohibited
Flow switch
Plate heat
exchanger
3-way
deviator
valve
The actual shutdown of the stove only occurs 20 - 30 minutes later,
and in any case not before the smoke temperature drops below 50 °C.
This occurs to allow the combustion fumes to be ducted into the flue
pipe by means of the extractor.
It also means that there is total recovery of the heat yielded by
combustion to the structure of the stove.
4.14. DOMESTIC WATER PRODUCTION KIT (optional) For POLAR-NOVA-ATHOS
POWER stoves only
The POLAR and NOVA stoves can also be equipped with a complete kit
for the production of domestic hot water, which is composed of:
• Plate heat exchanger
• 3-way deviator valve
• Flow switch
• Pipes and fittings for connection
The kit is pre-assembled by the manufacturer, MCZ. Its purpose is to
heat domestic water from the water line of the home.
When a hot water faucet is opened, the internal flow meter orders the
deviator valve to send the hot water in the boiler to the plate heat
exchanger. The temperature of the hot water depends a great deal on
the temperature of the heating system. As a guideline, it can be
calculated by subtracting 10°-15°C from the value shown on the control
panel of the stove (temperature of water in boiler).
If the stove is in ECO-STOP status and there is a request for domestic
hot water, 30 seconds after the request the stove automatically starts
the lighting sequence to heat the water in the boiler and then the
domestic hot water.
For long-lasting operation of the plate heat
exchanger, you need to know the water hardness of
your system in order to prevent incrustations.
If the water in your home is very hard, you should
install a water softener upstream (see chapter 3.4.3)
On a yearly basis, you should have the plate heat
exchanger serviced to remove salt and calcium
sediment, or replace the heating plates with new
ones. These spare parts are supplied by MCZ.