User Manual

Serengeti-IR
™
Installation, Operation & Service
Page 32 Combustion Research Corporation
Was burner(s) isolated
during high pressure leak
test?
New Installation?
YES N
O
Turn up thermostat
NO
Are gas li nes purged of ai r?
Y
E
S
YES
Purge gas lines until gas
is present at burner inlet
NO
Does the Blower start?
Is there pow er to the
blower?
Disconnect power. Does
blower wheel rotate
freely?
NO Y
E
S
Is there 120 volt pow er to
the pri mary si de of burner
transformer?
Check wiring, circuit
breakers, and any relays
tha t ma y be u sed.
NO
YES
Check wiring and repai r
as needed.
N
O
YES
Is there 24 volts on the
secondary side of
tra nsf o rmer?
N
O
Is there 24 volt power at
the i gn i ti on con trol?
Is there 24 v o lts to the
pressure switch?
N
O
Replace blower assembly.
NO
Is blower obstructed?
Y
E
S
Remove obstruction and
realign blower wheel.
YES
Replace Transformer.
YES
Is the vent pipe, air
inlet or blower wheel
blocked or obstructed?
YES
N
O
Is there 24 volts through
the 2 a mp f use?
N
O
Are the air hoses
connected to the
pressure switch leak
free and secure?
N
O
Repair and replace
hoses as needed.
Place a jumper wire across
the pressure switch, is
there 24 V p ow er to the
ignition control?
YES
N
O
Replace pressure
switch.
Y
E
S
Does ignition control
a ttempt to i gn i te the g as
after 30 second pre
purge?
1
N
O
Replace 2 amp fuse.
Clear all obstructions
and clean blower wheel.
YES
NO
YES
Is there 24 v o lts to the
pressure switch?
NO
Replace valve.
TROUBLE SHOOTING