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Building Technologies CC1N7435en
HVAC Products 11.01.2007
Warning notes
To avoid injury to persons, damage to property or the environment, the following
warning notes should be observed!
Do not to open, interfere with or modify the unit!
• All activities (mounting, installation and service work, etc.) must be performed by
qualified staff
• Before performing any wiring changes in the connection area of the LGB..., com-
pletely isolate the burner control from the mains supply (all-polar disconnection)
• Ensure protection against electric shock hazard by providing adequate protection
for the burner control’s connection terminals
• Each time work has been carried out (mounting, installation, service work, etc.),
check to ensure that wiring is in an orderly state and make the safety checks as
described in «Commissioning notes»
• Check to ensure that wiring is in an orderly state
• Press the lockout reset button only manually (apply a force of no more than 10 N),
without using any tools or pointed objects
• 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
Mounting notes
• Ensure that the relevant national safety regulations are complied with
Installation notes
• Always run the ignition cables separate from the unit and other cables while ob-
serving the greatest possible distance
• Do not mix up live and neutral conductors
• Install switches, fuses, earthing, etc., in compliance with local regulations
• Ensure that the maximum permissible current ratings will not be exceeded (refer to
«Technical data»)
• Do not feed external mains voltage to the control outputs of the unit. When testing
the devices controlled by the burner control (fuel valves, etc.), the LGB... must not
be connected
• To isolate the burner control from the mains supply, use an all-polar switch with a
contact gap of at least 3 mm
• Secure the earthing lug in the base with a metric screw and a lockwasher
• In the case of burners with no fan, the AGK25 must be connected to terminal 3 as
a burden, or else the burner cannot reliably start
• For safety reasons, feed the neutral conductor to the neutral distributor in the plug-
in base, or to terminal 2. Connect the burner components (fan, ignition transformer
and gas valves) as represented in the figure 7435a14, to the neutral distributor as
shown below. The connection between neutral conductor and terminal 2 is pre-
wired in the base
Exam-
ple
23
7
4
5
M
N
7435a14/0601
Z
V1
V2
Legend
V... Fuel valve
M Fan motor
Z Ignition transformer
Correct wiring of neutral conductors!
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