MCZ Hydrotherm 70 - Manual (Page 24)

INSTALLATION AND USE MANUAL
Chapter 4
page
24
Installation and assembly Technical service – MCZ GROUP S.p.A. all rights reserved - Reproduction prohibited
4.6.2. Hydraulic connection with Open Tank
In order to achieve a good running of the Hydrotherm fireplace stove
installed with open tank, please closely follow the installation rules
stated below:
 The system must be loaded only by natural fall from the
expansion tank open in the del return of the fireplace stove
with a duct of 1”. Direct loading with the pressure from the
mains is prohibited. The maximum operating pressure is 1.5
bars.
 The expansion tank must be of the open type with vent tube of
minimum Ø 1”. This must be placed at a height higher than 3
meters from the highest point of the radiators. If the kits in
diagrams 2 and 3 are used, the expansion tank can be
placed near the fireplace stove.
 The vent tube of the expansion tank must feature no shut-off
valve or unneeded curves. Both the open expansion tank and
the vent tube must be protected against the cold.
4.6.3. Hydraulic connection with Closed Tank
In order to achieve a good running of the Hydrotherm fireplace stove
installed with closed tank, please closely follow the installation rules
stated below:
 The system must be loaded only with the pressure from
the mains. The maximum operating pressure is 1.5 bars.
 The expansion tank must be of the closed type.