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7.6. BOILER CONNECTION TO A POWER SUPPLY SYSTEM
The boiler room should be equipped with the 230V/50Hz power supply sys-
tem in accordance with current specific regulations in force in a country of desti-
nation. The power supply system must end with a socket equipped with a pro-
tective contact. The plug socket should be located at a safe distance from heat
emission sources. A defective power supply system may damage the controller
and pose a threat to boiler room users. It is forbidden to use extension cords. It
is recommended to connect the heating device on a separate power circuit with
a protective device in the main switchboard.
A descriptive identification of cables and sensors was used, and plugs of
various shapes and colours. An additional label on the boiler "connect cables
according to description".
Temperature controller, burner controller and devices working with it ope-
rate under voltage of 230 V, therefore, all connections can only be made by a
person having required qualifications (Polish Electricians Association licence
up to 1kV). All works should be performed with power supply switched off and
all required safety rules for servicing of electrical devices observed (ensure the
plug is unplugged from the mains!). Any attempt to perform unauthorised re-
pairs/changes in the control system may result in electric shock and loss of the
guarantee. Additionally electrical equipment is labelled with pictograms warning
about the hazard.
An attention should be paid to route cables supplying energized equip-
ment away from the boiler components that become hot during operation
(upper clean out hatch, flue, doors).
An emergency power supply for the heating system (temperature controller,
control module, fan, gearmotor, circulatory pumps, mixing valves with an actu-
ator) should be provided in the event of power outage, from additional equip-
ment: UPS with a sine wave output or a power generator.
NOTE!
SHOCK HAZARD
37
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