PAGE
7
of
32
HO-1-1143 OIL-FIRED HEATER
© SAMUEL JACKSON, INCORPORATED, 2009 ALL RIGHTS RESERVED
Adjusting the Air Flow Switch
Before attempting to operate the heater, the air flow switch should be adjusted for the
actual air flow through the heater for safety. The air flow switch is connected to a pitot
tube mounted in the air inlet duct to the blower fan so the velocity pressure of the air flow
through the heater is monitored.
To adjust the air flow switch, remove the aluminum electrical cover on the front of the
switch. Turn the heater control switch to I (ON). The blower fan should start. Check if
the motor on the Beckett burner is on.
If the Beckett burner motor is off, slowly adjust the air flow switch adjusting screw
counter-clockwise until the motor comes on then continue turning the screw another
½
round out.
If the burner motor is on, slowly adjust the air flow switch adjusting screw clockwise
until the motor turns off. Next, adjust the screw counter-clockwise until the motor comes
on then continue turning the screw another
½
round out.
After operating the heater at target temperature, it may be necessary to adjust the screw
out (counter-clockwise) a little more to prevent nuisance trips of the air flow switch.
Adjustment screw on air flow
switch. Turning the screw
counter-clockwise makes the
switch less sensitive to air flow
changes.
Summary of Contents for HO-1-114
Page 1: ...HO 1 1143 700 000 Btu Hr Oil Fired Heater...
Page 2: ...PAGE 2 of 32 HO 1 1143 OIL FIRED HEATER SAMUEL JACKSON INCORPORATED 2009 ALL RIGHTS RESERVED...
Page 26: ...PAGE 22 of 32 HO 1 1143 OIL FIRED HEATER SAMUEL JACKSON INCORPORATED 2009 ALL RIGHTS RESERVED...
Page 27: ...PAGE 23 of 32 HO 1 1143 OIL FIRED HEATER SAMUEL JACKSON INCORPORATED 2009 ALL RIGHTS RESERVED...
Page 33: ...PAGE 29 of 32 HO 1 1143 OIL FIRED HEATER SAMUEL JACKSON INCORPORATED 2009 ALL RIGHTS RESERVED...
Page 34: ...PAGE 30 of 32 HO 1 1143 OIL FIRED HEATER SAMUEL JACKSON INCORPORATED 2009 ALL RIGHTS RESERVED...