49
tion wire and proper grounding and wiring. Turn
power back on. Repeat Step 3. If there is still no
spark after several attempts the igniter may be
misaligned;
5. Check to see if igniter is grounded out by pulling
the spark wire and doing a continuity check
between the igniter and burner. If the igniter is
grounded out, it must be realigned. Remove the
burner. Loosen the igniter nut, locate the igniter in
the center of the burner head and tighten igniter
nut. Confirm it is centered and reinstall burner
head;
6. If you have spark, turn off unit;
7. Turn on power. Unit will pre-purge 40-45 seconds
and move onto ignition trial. You will hear a click
from pilot gas valve (you will not hear the spark-
ing);
8. The pilot may not light at first trial; leave the unit
running until you have pilot. If you still do not see
pilot over 90 seconds; turn off the unit; repeat
steps 6-8;
9. Check pilot manifold pressure, Location (4).
Compare the reading to the value listed in the
tables;
10. Check pilot flame; 8 distinct circular blue flames
around the center of the pilot;
11. Replace the cap for pilot manifold adjustment
screw; do not over-tighten.
Note: For different gas control options, call the factory for proper pressure settings.
Note: For different gas control options, call the factory for proper pressure settings.
Table U: Pressure Settings and Emission Guidelines (True Readings) for NAT. GAS
Table V: Pressure Settings and Emission Guidelines (True Readings) for LP GAS
Summary of Contents for 751
Page 2: ...2...
Page 6: ...6 Component Locations Fig 1 Component Locations...
Page 15: ...15 Fig 6 Dual Boiler Piping Fig 7 Dual Boiler Piping with CHX...
Page 20: ...20 Fig 13 Single Boiler Pool Application Fig 14 Single Boiler Pool Application with CHX...
