Instruction of replacing Horizontal Mullion heater
Instruction Notice
1.Use a tooth-washer to fix the 
earth wire;
2.Be careful:the distortion of clip 
will cause gap between the 
airproof and horizontal mullion.
1
1.Remove the 
screws fixing 
horizontal
mullion;
2
2.Dismantle the 
horizontal mullion and 
foam airproof;
3
3.Disconnect the linking 
clip and mullion heater;
4
4.Remove the screw fixing earth wire of 
heater,then tear off  the heater;
5.Install the horizontal mullion according to the above steps.