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CONVERTIBLE CONTROLS CONT.
To convert from Vertical to Horizontal model, remove
Knockout Plug and Plate. Remove Hex Nut (inside con-
trol) and swing capillary upward into back knockout. Place
Knockout Plate beneath Hex Nut on back of control and
tighten Hex Nut (inside control). If bottom knockout is not
used for wiring, insert Knockout Plug.
NOTE
TRANSFORMER
TO
LINE
THERMOSTAT
AUTOMATIC
PILOT
THERM PILOT
TRANS
LIMIT
CONTROL
DIAPHRAGM
GAS VALVE
IF AUTOMATIC PILOT IS NOT USED,
CONNECT A JUMPER BETWEEN
THE PILOT TERMINALS
Used as high limit
control with
diaphragm gas valve
1 4
2 3
TH TR
AUX
TRANSFORMER
TO
LINE
THERMOSTAT
HIGH
LIMIT
COIL
PLUG-IN
PILOT
SILENT KNIGHT
GAS VALVE
Used as high limit control
with Silent Knight gas
valve with plug-in pilot
THERMOSTAT
TRANS
LIMIT
CONTROL
FUSED
LINE
SWITCH
Used as high limit
control with
oil burner control
MOTOR
1
2
T
T
4
3
LINE
GND HOT
STACK
INTERMITTENT IGNITION
OIL BURNER CONTROL
If the boiler or burner manufacturer recommends a wiring
diagram, then follow such recommendations.
If none is offered, these diagrams show suggested cir-
cuits.
All wiring should be done in accordance with local and national electrical codes and ordinances.
WIRING
EXTENDING CAPILLARY
Some controls have excess stored capillary which may be
extended for use with an extended shank well. Use reason-
able care when straightening and forming the capillary.
With the capillary fully extended, the bulb should slide all
the way to the end of the well.
INSTALLATION
If the boiler manufacturer recommends a control location,
follow such recommendations. If none is offered, the
following information gives suggested locations.
When used for high limit service, the control should be
installed in the riser close to the boiler, or in a boiler
tapping that is near the top or hottest section of the boiler.
If the boiler is also used to heat domestic hot water, make
sure that the high limit control is not located in the section
of the boiler that contains the heat exchanger or piping for
domestic hot water.
When used for low limit or operator service, the control
should be located near that section of the boiler that
contains the heat exchanger or piping for domestic hot
water.
To remove the well from the control, loosen the set screw
in the large nut, then slide the well off to expose the bulb.
Screw the well into the proper tapping. Slide the bulb back
into the well, making sure that the bulb enters the well as
far as it will go and tighten the set screw.
Do not dent or bend the bulb as this will prevent
it from fitting into the well properly.
CAUTION
KNOCKOUT PLATE
BULB
CAPILLARY
MOUNTING STEM
HEX NUT
KNOCKOUT PLUG
Convertible Control converted to Vertical Model.