HITZE ALBERO, Operation And Installation Manual, Page: 38 / 180

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• remaining spigots can be used to connect the safety or drain valve or to plug;
• The coil (spigot G ½”) must be connected to the cold water supply by the thermostatic
valve with a temperature probe mounted in the fireplace body.
• the valve is connected directly to the coil and to the cold water system without
intermediate components;
• mesh filter must be installed before each pump and non-return valve after the pump;
• fittings by the fireplace should be easily accessible (through vents or revisions) and
the connections easily disassembled, e.g. using screws;
• the installation must be able to vent and drain water;
• in the case of installation of fireplaces in a room at risk of freezing, fill the system with
antifreeze liquid and provide drain valves. If the fireplace is not used in the winter,
drain all the water from the installation;
• do not allow the installation to become contaminated during installation, e.g. sand,
chips, etc. After installation, flush the system and perform a hydraulic test;
• all components of the installation: pumps, valves, etc., must be installed in easily
accessible locations to improve their maintenance, repair or replacement; insulate
elements from the heat of the fireplace;
• the water in the installation should be raw and its hardness must not exceed 10°n;
• in the event of contamination of the tap water, a sediment filter must be used in front
of the tap valve, which is used to fill the central heating system;
• corrosion inhibitors and oxygen-binding agents, as well as agents limiting limescale
formation are recommended to use;
• cold water cannot be supplied through the fireplace if the water temperature of the
central heating system is above 40°C.
3.3. ELEMENTS OF CENTRAL HEATING INSTALLATION
The installation is assembled with:
• circulation pump (or pumps), which purpose is to force the circulation of water. The
pump is started up by the central connected to the insert;
• plate exchanger , in order to separate the fireplace pressure system with the central
heating system. The part of the installation, which is behind the plate exchanger,
should have own safety elements. It is necessary to remember about proper
exchanger connection – use suitable inlet and outlet spigots, and that not all rinsing
agents are apropriate to rinse the exchanger.
Fig. 24. Spigots for connecting insert with water jacket - page 172.
Necessary conditions for connecting fireplace in the opened system:
• the system of the fireplace is additionally secured with the opened expansion vessel,
which compensates the water rise in the installation during the temperature growth,
without the growth of pressure. The vessel should be installed in a place where it
won’t freeze;
• overflow pipe, which drains excess water from the system, should be installed inside
the vessel. Tank of the overflow pipe must be open, without valves;
• safety pipe should come out of the fireplace into the expansion vessel; no valves,
reductions etc. must be installed on the pipe between the fireplace and the vessel
(the diameter of the expansion pipe, safety and overflow pipe should be at least
2.5cm in diameter, the safety pipe should have very few bends as possible and no
valves);