44
ซ.บรมราชชนนี
70
ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม.
10170.
โทร:
02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Use
(cont´d)
General
Both types of flame safeguards are used primarily in conjunction with LEC1 control
units on the following applications:
Dual-supervision of burners
/ supervision of the main flame or of the ignition and
main flame by 2 identical or different types of detectors
Supervision of forced draft oil / gas burners
/ supervision of the flame
with
different types of detectors, depending on the operating mode
Multiflame supervision
/ plants with several burners whose flames must be
supervised individually by one or several detectors, whose startup and
supervision, however, should or must be carried out centrally and simultaneously
by only 1 burner control
The flame safeguards can also be used in connection with other types of burner
controls provided the given combination and selected connection circuit do not
impair the burner control
’s safety functions
The flame safeguards are also used as
flame indication units
in combustion
plant with manual startup
Warning notes
The avoid injury to persons, damage to property or the environment,
the following warning notes must be observed!
It is not permitted to open, interfere with or modify the units!
All activities (mounting, installation and service work, etc.) must be performed by
qualified staff.
If this is not observed, there is a risk of loss of safety functions or
a risk of electric shock
For safety reasons
– self-test of flame supervision circuit, etc. – at least one
controlled shutdown is required every 24 hours.
If this is not observed, there is
a
risk of loss of safety functions
Before making any wiring changes in the connection area, completely isolate the
plant from mains supply (all-polar disconnection). Ensure that the plant cannot be
inadvertently switched on again and that it is indeed dead. If not observed, there is
a risk of electric shock hazard
Ensure protection against electric shock hazard by providing adequate
protection for the flame safeguard´s connection terminals. If this is not observed,
there is a risk of electric shock
Each time work has been carried out (mounting, installation, service work, etc.),
check to ensure that wiring is in an orderly state.
If this is not observed, there is
a
risk of loss of safety functions or a risk of electric shock
Fall or shock can adversely affect the safety functions. Such units must not be put
into operation, even if they do not exhibit any damage
The ionization probe does not offer protection against electrical shock hazard.
The mains-operated ionization probe must be protected against accidental
contact. If this is not observed, there is a risk of electric shock
An ignited UV tube is a source of UV radiation!
In case of flame supervision by
means of flame detectors, the detectors must be placed such that there is
no
direct visual contact
between them.
If this is not observed, there is a risk of
loss of safety functions
Engineering notes
Ensure that the drop out delay time of relay «d» does not exceed 50 ms (also refer to
«Connection examples», 7781a02).
2/15
Building Technologies Division
CC1N7781en
01.08.2016
