LOA24.171B17 Просмотр технического описания (PDF) - Siemens AG

Номер в каталоге

Компоненты Описание

производитель

LOA24.171B17

LOA24.171B27 - Oil burner control

Siemens AG 

Warning notes

To avoid injury to persons, damage to property or the environment, the following

warning notes should be observed!

Do not open, interfere with or modify the unit!

· Before performing any wiring changes in the connection area of the LOA..., com-

pletely isolate the unit from the mains supply (all-polar disconnection)

· Ensure protection against electric shock hazard by providing adequate protection

for the burner control’s connection terminals

· Check to ensure that wiring is in an orderly state and that the wires are firmly con-

nected

· Press the lockout reset button / operating button only manually (applying a force of

no more than 60 N), without using any tools or pointed objects

· Fall or shock can adversely affect the safety functions. Such units may 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

· Installation and commissioning work must be carried out by qualified staff

· Do not mix up live and neutral conductors

· Always run high-voltage ignition cables separately while observing the greatest

possible distance to the unit and to other cables

Electrical connection of flame detectors

It is important to achieve practically disturbance- and loss-free signal transmission:

· Never run the detector cable together with other cables

– Line capacitance reduces the magnitude of the flame signal

– Use a separate cable

· Observe the permissible lengths of the flame detector cables (refer to Data Sheets

7714 (QRB...) and 7716 (QRC...))

Commissioning notes

· Commissioning work must be carried out by qualified staff

· When commissioning the plant, when carrying out maintenance work, or after

longer off periods, make the following safety checks:

Safety check

Anticipated response

a) Burner startup with flame detector Lockout at the end of «TSA»

darkened

b) Burner startup with flame detector Lockout after approx. 40 seconds

exposed to extraneous light

c) Simulation of flame failure during

Repetition followed by lockout at the

operation. For that purpose, darken end of «TSA»

the flame detector during operation

and maintain this state

2/10

Siemens Building Technologies

HVAC Products

CC1N7118en

09.10.2002

Share Link: