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Electric Combination Boiler User Manual
Warning against Freeze Protection:
The heating installation must be completely isolated. The open areas of the installation should be
isolated more than the interior parts.
Considerations in New Installations:
To minimize the addition of fresh water, system design and sizing should be done correctly. None of
the materials used in the installation must have gas permeability. A maximum of 50 micron filters of
synthetic or metal porous should be placed on the fresh water splice line. In systems with closed
expansion tanks, the pressure must be above atmospheric pressure throughout the installation.
Important Considerations for Heating Systems Connected to Old Installations:
In a long-term heating system, a protective layer (black magnetite) is formed on metal surfaces in
contact with water. When a new boiler is installed in the old system, the clean surfaces of the boiler
will be the first place to start corrosion. Therefore, when a new boiler is connected to the old heating
system, in addition to the measures to be taken for new systems, the following issues should be
considered:
1. The old system must be thoroughly washed to remove debris and sediments from the
boiler before it is connected.
2. A manual valve air separator must be installed at the top of the system.
Before installing new equipment in the old heating installation, the installation must be washed several
times with water.
