AERCO BMK 3.0 LN Nat. Gas for Mass. only - Manual (Page 32)

CONTROL PANEL OPERATING PROCEDURES
Figure 3-3.
SS s
3. With all required safety device switches
rgizes and turns
alve rotates to the full-
how
wer proof switch on the Air/Fuel
OV Location
closed, a purge cycle will be initiated and the
following events will occur:
(a) The Blower relay ene
on the Blower.
(b) The Air/Fuel V
open purge position and closes purge
position switch. The dial on the Air/Fuel
Valve (Figure 3-4) will read 100 to
indicate that it is full-open (100%).
(c) The FIRE RATE bargraph will s
100%.
4. Next, the blo
Valve (Figure 3-5) closes. The display will
show Purging and indicate the elapsed time
of the purge cycle in seconds. The normal
(default) time for the purge cycle is 10
seconds.
100
DETAIL “A”
T
O
B
L
OWE
R
AI
R I
N
DIAL
(DETAIL “A”)
STEPPER
MOTOR
Figure 3-4.
Air/Fuel Valve In Purge Position
Figure 3-5.
Blower Proof Switch
3-8