Overview of Primary Product

8
£
S4 DIP Switches
SW1 determines fan motor operation:
OFF = Fan motor remains energized after flame fail
ON = Fan motor de-energizes with flame fail after 15 second post purge
SW8 determines operational mode:
ON = PURGE TIME
OFF =EXTENDED PURGE TIME
SW7 of the S4 DIP switches is used; along with SW3 of DIP switch S2. TFI timings as shown in
table below.
SETTING PURGE TIME = 5 MINUTES
METHOD 1
METHOD 2
Example:
Set 5 minute purge
REQUIRED TFI (Sec.) SW3 OF S2 SW7 OF S4
5 OFF OFF
10 OFF ON
15 ON OFF
S2 S4
12345678 12345678
ON
ON
OFF OFF
S2 S4
12345678 12345678
ON
ON
OFF OFF
METHOD 1 METHOD 2
S4 SW8 = ON S4 SW8 = OFF
S2 SW8 = OFF S2 SW8 = ON
S2 SW7 = ON S2 SW7 = ON
S2 SW6 = OFF S2 SW6 = OFF
S2 SW5 = ON S2 SW5 = ON
S2 SW4 = OFF S2 SW4 = OFF