Страница 1: ...INST EX CESSIVE TEMPERATURES CAUSED BY CLOGGED FILTERS THE L6068 CAN ALSO BE USED TO CONTROL A 2 SPEED FAN q L4068 has spst switch L6068 has spdt switch q L4068A C E F have adjustable FAN OFF and differential settings q L4068G has adjustable FAN OFF setting fixed differential setting 3 L6068 available with fixed or adjustable temperature setting differential is fixed q MAN AUTO fan lever standard ...
Страница 2: ...justable temperature setting with case and cover L6068D Air Switch fixed temperature setting with or without case and cover ELECTRICAL RATING amperes L4068A C E F 120V AC 240V AC Full Load 14 7 Locked Rotor 84 42 Pilot Duty 50 VA at 24V ac L4068G 4 4 amps full load 26 4 amps locked rotor at 120V ac 50 VA at 24V ac pilot duty L6068 50 VA at 24V ac pilot duty Maximum connected load 2000 VA SWITCHING...
Страница 3: ... differential 2 L4068G with MAN AUTO fan lever ACCESSORY Case and cover assembly Part No 132475E for L4068C F Assembly includes case cover decal one self tapping screw for mounting control in case and two sheetmetal screws for mounting case Installer must be a trained experienced serviceman Disconnect power supply before connecting wiring to prevent electrical shock or equipment damage Do not exce...
Страница 4: ...wiring and adjustments are complete replace cover NOTE Manual fan lever on L4068E F has a break awav arm If cover to be used has no fan lever opening snap off lever by bending with fingers be fore placing cover on control L4068G LOCATION AND MOUNTING The L4068G is mounted on any convenient stud or rafter in the attic Mount the L4068G at the selected location using two screws through the mounting h...
Страница 5: ...WITCH IN LINE CIRCUIT COMBINATION FAN AND LIMIT TO GAS VALVE CONTROLCIRCUIT A PROVIDE DISCONNECT MEANSAND OVERLOAD PROTECTION AS REQUIRED Z001A FIG 8 TYPICAL WIRING CONNECTIONS FOR 16068 USED AS A SECONDARY LIMIT AT THE FILTER OF A DOWNFLOW FURNACE R W MAKES R B BREAKS ON TEMPERA TURE RISE TO SET POINT A FAN L6068 2 CONTROLLER POWER SUPPLY HIGH LIMIT CONTROLLER TRANSFORMER FAN MOTOR TO GAS VALVE C...
Страница 6: ...N TERMINAL 31 R AND RARE COMMbf 4 SET PO NT BACKPLATE MOUNTING SCREW WIRING KNOCKOUT 2 FIG 12 INTERNAL VIEW OF L6068 SHOWING USE OF PUSH IN TERMINALS L4068G BEFORE ADJUSTING SET POINT KNOB MAKE SURE INSULATOR FLAP COVERS TERMINAL SCREW BELOW KNOB On L4068G the fan differential is fixed at 12 F 7 C nominal The fan will start when attic temperature rises about 12 F 7 C above the FAN OFF setting For ...
Страница 7: ...and the limit control should shut off the burner when the plenum temperature reaches the limit control set point Reconnect the fan Again set the thermostat to call for heat The burner should come on and the fan should come on when the plenum temperature reaches the FAN ON set point L4068G After mounting and wiring are complete turn on the power supply and turn FAN OFF setting more than 12 F 7 C be...
