Opop H4-D Series User Manual page 6

H4EKO-D
Front of the boiler:

Control unit

Secondary air flap

Combustion chambre door
Back side of the boiler:

CH sensor sink

Safety sensor sink

Heated water outlet

Chimney outlet

Flue gas temperature sensor

Exhaust fan

Cooling loop inlet and outlet (interchangeable)

Cooling loop sensor sink

Cold water inlet

Filling valve inlet
Left side of the boiler:

Primary air flap

Filling chamber flap

Cleaning closure
Right side of the boiler:

Primary air flap

Cleaning closure

Sink for electric heater at bottom of boiler
Top side of the boiler:

Filling door

Cleaning door cover

Cleaning door

Protection plate under the cleaning door
6
User manual