Paloma PH-28RIFSN, Инженерный справочник

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[Sensing Burner]
The sensing burner is a all primary air type ceramic burner that consists of an outer jacket surrounding the flame
opening and a thermocouple to detect flame temperature. In case oxygen level decreases due to blocked or
clogged air intake or flue venting, or by contaminated air, location of the flame will change as well as its
temperature by the thermocouple. The sensing burner is located in the part of the main burner and designed to
monitor the flame condition at all times. Therefore, it shut off gas before the imperfect combustion occurs in the
main burner.
Oxygen Depletion Safety Device (O.D.S.D.)
NORMAL
========
BLOCKING LACK OF OXYGEN
The flame lifts away
from the thermocouple. The flame lifts away
from the thermocouple.
(Blocked or clogged vent, fan etc.)
(Contaminated air in room, etc.)
=============== =========
Thermocouple Thermocouple Thermocouple
Primary Air
Primary Air Primary Air
(Lack of Oxygen)
Secondary Air
Gas
Gas
Gas
(Decrease)
(Indoor Model & Direct Model Only)