User Manual

Omega II
®
Installation, Operation & Maintenance
Page 34 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 unti l gas
is present at burner inlet
NO
Does the Blower start?
Is there po w 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
that may be u sed.
NO
YES
Check wiring and repair
as needed.
N
O
YES
Is there 24 volts on the
secondary side of
tra n sf ormer?
N
O
Is there 24 volt power at
the i gn i ti on c o n tro l?
Is there 2 4 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 po wer to the
ignition control?
YES
N
O
Replace pressure
switch.
Y
E
S
Does ignition control
a ttemp t to i gn i te the g a s
after 30 second pre
purge?
1
N
O
Replace 2 amp fuse.
Clear all obstructions
and clean blower wheel.
YES
NO
YES
Is there 2 4 v o lts to the
pressure switch?
NO
Replace valve.