1
5
the pilot regulator does not exceed the regulator or pilot solenoid valve rating. When bleeding air from the
pilot line system, do not allow the venting of gas into the room.
3.5.5 Install required system measuring devices:
1
Appropriate flame signal meter to the flame safeguard control
2
Stack thermometer, O
2,
and Smoke Test sample line in the breaching
3
Draft gauge to the combustion chamber test point
3.5.6 With the burner panel control switch in the OFF position, apply power to the burner through the main
burner disconnect switch. Switch the burner panel On/Off switch to the ON position momentarily to
determine that the blower motor, compressor motor and oil pump set motors are running in the correct
rotation.
0
100
200
300
400
500
0
20
40
60
80
100
120
150
300
360
PF Y-TYPE NOZZLE
(30 psi prepurgeAir)
GPH #2 OIL
PSI
O
IL
Figure 6: Pressure/Flow Curve for PF Y-Type Nozzles
3.5.7 Appropriate steps must be taken to transfer the oil from the tank to the burner. It is imperative that the
system be primed prior to operation. The system priming may be achieved by closing the manual valve in
the oil suction line and priming the oil pump through the pump gauge pressure port. Priming can also be
accomplished through the oil filter on the suction line, if it is of the removable top type. When replacing
the oil filter cap, be sure to attain a vacuum tight seal. Start the burner with the suction line manual valve
closed. Let the burner run until the vacuum gauge indicates a high vacuum, then quickly open the
manual valve in the suction line. This combination of priming and high suction should pull the oil from the
tank to the burner, provided that there are no leaks and the line is properly sized (see Figure 3 for proper
line size).
3.5.8 Refer to the burner wiring diagram and flame safeguard control information supplied with the burner to
determine the specific firing sequence relating to limit and interlock circuits.
3.5.9 The air servo should be at or near zero with the air damper closed to 1/8” open. The ignition circuit will be
energized after the blower pre-purge period has been completed and all limit and other interlock circuits
have been closed. Allow time for the pilot to light, and adjust it for proper ignition and flame signal. For
flame safeguard controls having a Test/Run test switch, place the switch in the Test position, causing the
Summary of Contents for UCM-1000
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