Instruction manual
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8.  Steps outlined in Paragraph 5 and 6 above must 
be repeated every time the Head/Turbulator or Air 
Band/ Damper Setting is readjusted.
9.  Turn “OFF” burner and remove Riello Combination 
Pressure Gauge and Bleeder Valve Assembly. 
Install pressure port/bleeder plug and tighten. Start 
burner again.
WARNING
DO NOT  loosen or  remove any  oil  line  ttings 
while burner is operating.
10.  FLAME FAILURE
  The V8H boiler controls operate the burner 
automatically. If for unknown reasons the burner 
ceases to re and the reset button on the primary 
control has tripped, the burner has experienced 
ignition failure. Refer to Oil Primary Control 
features, Paragraph I, Step 2 of this Section and 
Section XV, Troubleshooting, Paragraph B. If 
the failure re-occurs, call your heating contractor 
immediately before pressing the reset button.
WARNING
DO NOT attempt to start the burner when excess 
oil has accumulated, when the boiler is full of 
vapor, or when the combustion chamber is very 
hot.
H.  CHECK FOR CLEAN CUT OFF OF 
BURNER.
1.  AIR IN THE  OIL LINE between fuel unit and 
nozzle will compress when burner is on and will 
expand when burner stops, causing oil to squirt from 
nozzle at low pressure as burner slows down and 
causing nozzle to drip after burner stops. Usually 
cycling the burner operation about 5 to 10 times will 
rid oil line of this air.
2.  IF  NOZZLE CONTINUES TO DRIP, repeat 
Paragraph H, No. 1 above. If this does not stop the 
dripping, remove cut-off valve and seat, and wipe 
both with a clean cloth until clean, then replace 
and readjust oil pressure. If dripping or after burn 
persist replace fuel pump.
I.  TEST CONTROLS.
1.  Check thermostat operation. Raise and lower 
thermostat setting as required to start and stop 
burner.
WARNING
Before installation of the boiler is considered 
complete, the operation of all boiler controls must 
be checked, particularly the primary control and 
high limit control.
2.  VERIFY OIL PRIMARY CONTROL 
FEATURES using procedures outlined in 
Instructions furnished with control or instructions as 
follows:
a.  GeniSys 7505 Control Features, see Figure 
30A.
i.  The GeniSys 7505 is a microprocessor-
based control. The indicator light provides 
diagnostic information for lockout, recycling 
and cad cell status. There is a manual reset 
button to exit the Lockout Mode.
ii.  Pump Priming Cycle: To facilitate purging 
air from the oil lines and lters, the 7505 can 
be placed in a purge routine by:
•  After the burner starts, press and hold the 
 reset button for 15 seconds until the 
SECTION XI: SYSTEM START-UP (continued)
Figure 29B: Electrode Positioning, Retention Ring 
Assembly and Nozzle Adapter (Carlin EZ-1 / EZ-2)
Figure 29C: Combustion Head / Nozzle /
Electrode Settings (Carlin 102CRD)
Figure 29D: Electrode Positioning (Riello 40 Series)










