Installation - Field Controls 46273500 Manual

THE PURPOSE OF THE VRV
The Vacuum Relief Valve is a
safety device to guard against
combustion problems
associated with directly
connecting oil burners to the
outside. Typical problems can
be caused by blockage of the
intake termination, icing up of
the duct work and effects of
leeward side wind effects on a
building.
VRV O
PERATION
The VRV gate operates on
changes in the vacuum
pressure generated by the inlet
to the oil burner. The VRV gate
will remain closed during
normal burner operation.
During an abnormal operation
(i.e., blockage of the intake or
change in external building
pressures) an increased
negative pressure on the intake
of the burner causes a
reduction in burner air flow.
Under this condition, the VRV
gate opens, stabilizing and
maintaining proper air flow to
the burner. The VRV gate
closes again once the
abnormal condition is
corrected.

INSTALLATION

1. Remove the oil pump and air
bands from the burner housing.
Install the sealing gaskets
onto the burner housing.
Failure to install the ring
gasket onto the burner
housing will result in unlevel
boot, noisy operation, and
2
improper CO readings. (See
Figure 1) Install mounting
spacer onto Air Boot™. (See
Figure 2) Position the Air
Boot™ over the burner
housing on the intake. The Air
Boot™ can be mounted onto
the burner in a horizontal or
vertical position. Install
mounting spacer onto Air
Boot™. Align the holes in the
Page 2
Figure 1
Figure 2
Figure 3