Weil-McLain UO-3 CV - Manual (Page 13)

Page 12 6104BAFG R0
6
Installing the Oil Tank and Supply System
Fuel supply level with or above burner –
SK8745
Figure 7. – Mounting Burner in Appliance
Tilt down 2
o
If space between burner
air tube and opening
exceeds 1/2 inch, pack
burner opening with ce-
ramic fiber refractory.
Figure 8. – Inside Tank Gravity Feed System
Figure 9. – Outside Buried Tank-Lift System
NOTICE
To further protect the fuel supply sys-
tem and reduce nozzle orifi ce plugging with fi ring rates
below 0.75 gph, a dual fi ltration system can be installed.
This typically consists of a 50 micron primary fi lter,
located near the fuel tank and a secondary fi lter rated for
at least 10 microns located near the burner.
Never use Tefl on tape on fuel oil fi ttings.
Tape fragments can lodge in fuel line compo-
nents and fuel unit, damaging the equipment
and preventing proper operation.
Use oil-resistant pipe sealant compounds. y
y
y
Damage to the pump could cause impaired
burner operation, oil leakage and appliance
soot-up.
Do Not Use Tef on Tape ! ! CAUTION
Oil Leak and Fire Hazard
WARNING !
Install the oil tank following applicable stan-
dards in the U.S. by referring to the latest
edition of NFPA 31 or CSA-B139 & CSA-B140
in Canada, and all authorities having jurisdic-
tion.
Note: to determine the proper fuel line size, refer
to the fuel pump manufacturer’s instructions pro-
vided with the burner. Refer to Figure 8 or Figure 9
for typical installation layouts.
Fuel Line Valves and Filter
Install two high quality, oil duty rated, fusible
handle design shutoff valves in accessible loca-
tions on the oil supply line. Locate one close to the
tank and the other close to the burner, upstream of
the fi lter for service access.
Install a generous capacity fi lter inside the building
between the fuel tank shutoff valve and the burner,
locating both the fi lter and the valve close to the
burner for ease of servicing. Filter should be rated
for 50 microns or less.
The burner is shipped without the by-pass plug
installed.
Install the by-pass plug in two-pipe oil supply
systems ONLY. y
y
Failure to comply could cause Immediate pump
seal failure, pressurized oil leakage and the
potential for a fi re and injury hazard.
WARNING
!
Do Not Install By-pass Plug
with 1-Pipe System
Mount burner on appliance