CHAPTERS
Y.
HIGH
OIL
TEMPERATURE
SWITCH
(OPTIONAL)
This control prevents
the
burner from starting, or
stops its operation,
if
the temperature
of
the oil
exceeds the normal operating temperature.
To
adjust, tum
the
dial until the pointer
is
ap-
proximately
25•
F above the normal operating
temperature. These controls generally have a set
differential and will close
s•
F below the set
point..
Z.
LOW
OIL
PRESSURE
SWITCH
(OPTIONAL)
This control prevents burner ignition, or stops
its
operation, when the oil pressure
is
below a set
_(X)int..
Adjust the control
by
turning the screw on
top
of
the
control case
to
an
indicated pressure 10
psi
below
the
established primary oil pressure
setting indicated on the oil supply pressure
gauge. The switch will remain
in
a closed posi-
tion
as
long
as
the
oil pressure exceeds this
setting. The control normally
used
automatically
rese~
when pressure
is
restored after a drop.
AA •
ELECTRIC
OIL
HEATER
THERMOSTAT
(400
and
600 Series
-Steam)
The maximum temperature setting
of
the
control
is
stamped on
the
dial. This
is
attained with
the
adjusting knob turned to
the
"high" end
of
the
scale
..
Lower settings are obtained
by
turning
the
adjusting knob clockwise, using the thermometer
in
the
fuel
oil controller
as
a guide.
The final setting
of
this theFlllostat should
be
at
a
temperature approximately
ts• lower
than
the
steam heater thennostat. This prevents electric
CHAPTER 5-24
ADJUSTMENT PROCEDURES
heater operation when the steam heater
is
functioning. The electric heater
is
sized to pro
..
vide sufficient heated oil for
low
fire operation
on cold starts before steam
is
available.
A
0.005 MFD capacitor
is
wired
in
parallel with
the thermostat lead connections
to prevent con-
. tact bounce and arcing. The control differential
is
nonadjustable.
88.
STEAM OIL
HEATER
THERMOSTAT
(No.
6 Oil)
(400
and
600 Series - Steam)
The maximum temperature setting
of
the
control
is
stamped on the dial. This
is
attained with
the
adjusting knob turned to the "high" end of
the
scale. Lower settings are obtained
by
turning
the
adjusting knob clockwise
usi~g
the
thermometer
in
the
fuel
oil controller
as
a guide.
The final setting
of
this
thermostat should pro-
vide oil
at
a sufficient ·temperature for efficient
combustion based on the flue
gas
analysis. There
is
no
need to heat
the
oil in excess
of
this
tern
per a-
ture.
A
0.005 MFD capacitor
is
wired
in
parallel with
the
thermostat lead connections
to
prevent con-
tact bounce
and
arcing. The control differential
is
nonadjustable.
CC.
HOT
WATER
OIL
HEATER
THERMOSTAT
(400
and
600 Series)
To
adjust, insert a screwdriver into
the
center slot
in
the control cover and tum
the
dial until
the
pointer
is
at
the
desired temperature level. This
control generally
has
a set differential
and
will
close
s•F
below
the
set point.
750-150
To Next Page
Loading...