How to Wire a MC200 to an OUH Oil fired Warm Air Unit

Interconnecting wiring between a MC200 and an OUH Oil fired Warm Air Unit

WARNINGS:

WARNING: The next section must be carried out by a qualified person to current IEE regulations for Electrical Installations and any local regulations which apply.

WARNING: The mains electrical supply to the MC200 should be taken from the appliance from heater terminals t10, t11 and t12 and through a local isolator fitted adjacent to the MC200.

WARNING: Any sensor wiring MUST BE RUN SEPARATELY and apart from ALL other wiring. Under no circumstances must voltage be applied to the sensor connections.

  Note: Any sensor cable must be screened two core and a minimum of 0.6mm² if solid and 7 x 0.2mm² if multistrand. The screen must be grounded only at the MC200.

  Note: Burner Reset terminal is internally connected to NEUTRAL when the reset button is pressed.


Procedure

Wiring terminals for the MC200 are located beneath the electrical lower front cover. Wiring should be completed in conduit, for which knockouts are provided in the bottom of the casing.

Mains supply and control circuit wiring should be completed in cables not less than 0.5mm².

WARNING: Burner High Fire circuit MUST be made by wiring a pair of cables using the MC200 volt-free switched terminals t8 & t9 as shown. You MUST NOT use a linked input and a single output as in Low Fire operation as by doing so will cause the burner to fail and invalidate any warranty.


Interconnecting wiring diagram LX to MC200