Ensbury LT 70 - 580
We reserve the right to make changes to dimensions and construction
17
edition 12.2020
Hamworthy Heating Limited – Dorset BH17 ONF
6.4. Hydraulic connection / technical safety measures
For the hydraulic connection of the heating system and water heaters– in particular with regards to technical
safety devices such as safety valves, expansion tanks, etc. – refer to generally accepted engineering rules as
well as locally applicable standards, specifications and regulations.
If boilers are installed in
garret-based heating plants
or at the highest point of the heating system, then boilers
will have to be provided with additional safety devices (such as protections against water shortage). Observe the
minimum operating pressure as specified in chapter 4.1. Act in compliance with local safety regulations in force
at all times.
Before connecting the boiler to an old installation, it is necessary to flush the whole heating system. It is also
recommended to provide for a sludge separator.
Boiler’s maximum operating pressure and the maximum operating temperature are given in chapter 4.1.
No minimum level of the amount of circulating water is required.
Damage can occur from
corrosion
when oxygen continuously enters the heating water through open
installations, expansion tanks that are too small, floor heaters with pipe material that is not oxygen-tight, etc.
If this cannot be prevented, additional measures are necessary in the form of correctly used oxygen binding
agents or chemicals. If it is not possible to realize an installation without oxygen entrance, a
system separation
must be set up using heat exchangers.
6.5. Electrical installation
6.5.1. General notice
The electrical installation must be carried out by an authorized electrician from beginning to end. In carrying out
the electrical installation, local regulations as well as any standards and specifications in force must be complied
with.
The wiring diagram is joined with the control panel.
Note:
Electrical connections, especially the connection to the mains, should only be made after all other
assembly and installation work has been completed.
Locally made installations (raceways, etc.) must not be clamped to the boiler’s panel work!
6.5.2. Connecting to the supply mains
External supply is one-phase, alternate current type 230VAC, 50Hz, max. 16A or three-phase alternate current
400VAC, 50Hz, 10A. The apparatus is internally protected by a 6,3A delayed-action fuse (burner/boiler) and by
an additional 6,3A delayed-action fuse for each additional governor or module.
All external connection cables must be laid to the back side of the boiler through the raceway under the boiler lid.
A DIN VDE 0116-compliant disconnecting device must be provided on site.
6.5.3. Connecting the burner
The electrical connections of the burner (power supply and control) are made by the customer in accordance with
the requirements of the burner.
Depending on the order, burner cables with 7 and 4-position DIN4791 connectors are supplied. The burners that
are used must be equipped with a corresponding counterpart.
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