Daikin FC Series - Controls, Settings and Functions

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Table 9: Controls, Settings and Functions
Gas Heating Controls
Symbol Description Function Reset Location Setting Range Di󰀨erential Part No.
AS
Blower air
switch
Proves
presence of
combustion
air.
N/A
Gas furnace
control
section
0.4" w.c.,
xed
N/A N/A 330038B-00
FD Flame rod
Senses pilot
ame.
N/A
Gas burner
assembly
N/A N/A N/A 365577A-00
FSG
Flame
safeguard
Proves pilot
ame and
controls
main gas
valve.
Manual
Gas furnace
control
section
N/A N/A N/A 0733008-01
GV1
Pilot gas
valve
Opens to
allow ow of
gas to pilot
burner.
Normally
closed
Gas heating
section
N/A N/A N/A 344884B-00
GV2, 3
Main gas
valve
Open to
allow ow of
gas to main
burner.
Normally
closed
Gas heating
section
N/A N/A N/A
Varies with
size
HPR
High pressure
regulator
Regulates
pressure
to main
regulator.
N/A
In gas line
before MPR
As
specied
10"–13" w.c.
(2491–3238 Pa)
N/A
Varies with
size
HP5
High gas
pressure
switch (IRI
option)
Shuts o󰀨
burner if
pressure
goes above
set point.
Manual
Gas heating
section
8" w.c.
(1993 Pa)
5"–35" w.c.
(1245–8718 Pa)
1"–3" w.c.
(249—747 Pa)
Varies with
size
LP5
Low gas
pressure
switch (IRI
option)
Shuts o󰀨
burner if
pressure
goes above
set point.
Auto
Gas heating
section
4" w.c.
(996 Pa)
3"–21" w.c.
(747–5231 Pa)
1"–3" w.c.
(249–747 Pa)
Varies with
size
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