38
a.
Unit should fire in 6 seconds
20.
Fuel pressure should be 100
a.
No smoke
i.
If black, open air 1/8” increments
ii.
If while close 1/8” increments
21.
Calibrate fuel pump to 200
a.
Close regulator, dial up clockwise, pump with 1/8 allen
to 200
b.
Dial regulator back up and allen up 200
i.
Shouldn’t be able to pass
22.
Dial back to 100
a.
Check for fuel leaks
23.
Check secondary
a.
Dial down until unit shuts off
i.
ALL functions should stop
ii.
No flame
iii.
No water
24.
Dial secondary set point back up
a.
Unit should resume operation to 120-125
b.
Let unit run and let temperature level out
i.
Should be within 2 degrees
c.
If unit cycles raise primary and secondary SP 5
respectively until unit stops cycling hot exceed 170 on
secondary
25.
Reset primary SP to 120
26.
Recheck differential to make sure it is 2
a.
Burner should shut off
27.
Reset secondary SP to 125
