Weil-McLain QB-180, QB-300 User Manual
QB-180/300
Oil Burners — Series 2
For Weil-McLain GO, 66 & 68 Boilers
Burner Manual
Patent 5,961-316
Read all instructions before installing
This manual must only be used by a qualified heating installer/service
technician. Failure to comply could result in severe personal injury, death or
substantial property damage.
Installer Leave all documentation with burner for future reference.
User Burner must be installed and annually serviced by a qualified installer/service
technician.
Part number 644-500-065/0200
QB-180/300 Oil Burners Series 2 — Burner Manual
! ! !
IMPORTANT! Read this page first
Hazard definitions
The following defined terms are used throughout this manual to bring attention to the presence of hazards of
various risk levels or to important information concerning the life of the product.
Indicates presence of hazards that will
cause severe personal injury, death or
substantial property damage.
Indicates presence of hazards that can
cause severe personal injury, death or
substantial property damage.
Read and follow instructions below to install or service the burner to reduce risk of severe personal
injury, death or substantial property damage.
• Appliance must be connected to a flue with
sufficient draft at all times to assure proper
operation.
• Do not use crankcase drainings or any oil
containing gasoline as it is more combustible than No. 1 or No. 2 fuel oil.
• Do not attempt to start burner when excess
oil has accumulated in combustion chamber, when boiler is full of vapor, or when
combustion chamber is very hot.
• Always keep manual fuel supply valve shut
• Do not start burner unless flue collector
• Never burn garbage or paper in the appli-
• Never leave combustible material around
Indicates presence of hazards that will
or can cause minor personal injury or
property damage.
Indicates special instructions on
installation, operation or maintenance
that are important but not related to
personal injury or property damage.
off if burner is shut down for an extended
period of time.
hood, jacket cap, flue cap and burner
mounting door are secured in place.
ance.
appliance.
Part number 644-500-065/02002
QB-180/300 Oil Burners Series 2 — Burner Manual
Contents
Hazard definitions .................................................................................... 2
Table of contents ...................................................................................... 3
Pre-installation considerations ................................................................ 4
1
Burner installation ................................................................................... 5
2
Fuel pumps and oil lines .......................................................................... 8
3
Wiring, operation and service ................................................................ 11
4
Troubleshooting ..................................................................................... 12
5
Parts list ................................................................................................. 14
6
Weil-McLain Limited Warranty .................................................. Back cover
Part number 644-500-065/0200 3
QB-180/300 Oil Burners Series 2 — Burner Manual
1
Pre-installation considerations
Codes and standards
• Install burner in accordance with NFPA 31, Standard for Oil-Burning Equipment and all local codes
and regulations of authorities having jurisdiction.
In Canada, refer to CSA B139, Installation Code for
Oil-Burning Equipment. Regulations of these authorities take precedence over instructions in this
manual.
• All wiring must comply with National Electrical
Code and local ordinances; in Canada, CSA C22.1
Canadian Electrical Code Part One and any local
codes. Refer to wiring diagram in
supplied with burner.
ment
• Underwriters Laboratories has certified this burner
to comply with ANSI Standard 296.6 and has listed
it for use with No. 1 or No. 2 fuel oil as specified in
ASTM D396.
Control Supple-
Chimney or vent
Inspect existing chimney or vent
before installing new burner. Failure to
do the following will cause severe
personal injury or death.
• Clean chimney, including removal
of blockage.
• Repair or replace damaged pipe or
liner.
• Repair mortar and joints.
Set the over-fire draft to the appliance manufacturer’s
recommended setting if available, or to -0.01" to -0.02"
water column. Install barometric control in breeching,
per control manufacturer’s instructions, when excess
draft needs to be relieved or to comply with applicable
codes and regulations. Use draft gauge to adjust proper
opening.
Combustion and ventilation
air openings
See appliance manual and
Burning Equipment
practice in Canada, refer to
Adequate combustion and ventilation
air must be provided to assure proper
combustion and reduce risk of flue gas
leakage and carbon monoxide
emissions, leading to severe personal
injury or death.
When the boiler is installed in a confined space (volume of space less than 50 cubic feet per 1,000 Btuh
input of all appliances in space), two permanent openings must be provided:
• One near the top of the enclosure
• One near the bottom.
• Each opening must have a free area of not less than
one (1) square inch per 1,000 Btuh (140 square inch
per gph), of the total input rating of all the appliances in the space.
When building is of unusually tight construction, has
a kitchen ventilating system, exhaust fans, clothes dryer
or vented fireplaces, it may be necessary to duct outside air directly to the burner in order to support clean
combustion. Weil-McLain QB-A1 Outside Air Kit, part
number 644-500-056, provides outside air directly to
the burner.
• If QB-180 or QB-300 Oil Burner is
received separately for field installation,
proceed to page 5,
• If QB-180 or QB-300 Oil Burner is
received installed on the boiler, proceed
directly to page 8,
Lines
NFPA 31, Standard for Oil-
for details. For recommended
CSA Standard B139
Burner Installation
Fuel Pumps and Oil
.
.
.
Part number 644-500-065/02004
QB-180/300 Oil Burners Series 2 — Burner Manual
2
Burner installation
Figure 1 Burner components
Ignition
Wires
“E” Clip
3/16“ Oil Line
Nozzle Adapter
Wrench
Adjustment
Cam
Captive
Screw
Electrode
Assembly
Top Leg of
Spinner
Centered
Vertically
Between
Electrodes
Nozzle
Spinner
Assembly
Spinner
Clamping
Screw
Nozzle
Adapter
GUN ASSEMBLY Includes:
Adjustment Cam
Electrode Assembly
Spinner Assembly
Nozzle
Nozzle Adapter
Oil Line
Ignition Wires
06502
Mounting burner
1. Remove burner from packing box.
2. Detach and save plastic bag with instructions and
bypass plug from fuel pump.
3. Install or verify correct nozzle as applicable:
a. Loosen, but do not remove, screw holding hous-
ing cover plate in place. Pull ignitor back and up
to swing open cover plate.
b. Disconnect oil line from solenoid valve.
c. Disconnect ignition wires from ignitor. Loosen,
but do not remove, captive screw securing ad-
justment cam in place. Turn adjustment cam so
Figure 2 Electrode settings
from tip of electrode
5/16“
to centerline of nozzle
1/8“
between electrode tips from tip of nozzle to tip of electrode
1/16“
06501
that the larger end of the slot aligns with the captive screw. Pull gun assembly back and up to remove.
d. Loosen clamping screw on spinner assembly and
slide assembly off nozzle adapter.
e. See
Table 1
on page 6 for proper nozzle size. Make
sure nozzle is tight in adapter (110 in-lbs nominal). Nozzle adapter wrench in burner housing
can hold nozzle adapter while you tighten nozzle.
f. Check electrode settings per
Figure 2
.
g. Replace spinner assembly on nozzle adapter. Top
leg of spinner must align vertically between electrodes. Make sure clamp is back against the
shoulder on adapter. Tighten clamping screw.
Fuel pump is factory set at 140 psig
(QB-300) or 150 psig (QB-180). Use of
a nozzle selected for 100 psig pressure
could result in severe personal injury,
death or substantial property damage.
Part number 644-500-065/0200 5
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