Page 44
7.7 Contactor
• Disconnect electrical supply to the heater.
• Open the controls compartment door.
• The contactor and overload are located on the electrical panel plate situated on the
right hand side of the unit.
• Disconnect all wiring to the to the contactor noting which cables are connected to
which terminals
•
The Contactor is attached to a DIN rail using a spring loaded din fixing clip - using a
small flat head screwdriver, prise the clip downwards to release the MCB.
•
Replace in reverse order.
7.8 MCB
• Disconnect electrical supply to the heater.
• Open the controls compartment door.
• The MCB is located on the electrical panel plate situated on the right hand side of
the unit.
• Disconnect the two cables from the MCB noting which cables are connected to
which terminals
•
The MCB is attached to a DIN rail using a spring loaded din fixing clip - using a small
flat head screwdriver, prise the clip downwards to release the MCB.
•
Replace in reverse order.
7.9 Fan/Limit Stat Assembly
• Disconnect electrical supply to the heater.
• Loosen the cable gland then disconnect the three cables from the fan stat (left hand)
and the two cables from the limit stat (right hand) noting which cables are connected to
which terminals.
•
Remove the two screws fixing the assembly to the body of the heater.
• Carefully withdraw the assembly through the hole and replace in reverse order.
Summary of Contents for OUH 100
Page 46: ...Page 46 Notes...
