Vallox 252 M, Manual

VALLOX 252 M

MOUNTING INSTRUCTIONS FOR THE SOUND ATTENUATOR

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Mounting

NOTE! BEFORE MOUNTING, CHECK THE MODEL OF VALLOX 252 M (L or R).

• Detach the door of the sound attenuator. (See the adjoining picture.)

• Detach the sleeves equipped with draught limiters (see the figure, item D).

• Cut through the lead-in sealings for the cable sleeves at the bottom of the extract duct

of the sound attenuator unit (no isolation inside). NOTE! VALLOX 252 model L or R.
(See the figure.)

• If VALLOX 252 is equipped with a water heating unit, also detach the sound

attenuation segment located in the supply air duct of the unit. NOTE! VALLOX 252
model L or R. (See the figure.)

• Lift the sound attenuator unit on top of VALLOX 252. Make sure that the cable sleeves

go through. (See the figure, item D.)

• Mount the lead-through cable tubes (included in the delivery), pushing them through

the lead-in sealings on top of the sound attenuator unit, and screwing them to the
cable sleeves. (See the figure, item C.)

• Lay the cables to be connected through the lead-through tubes to the connection box

inside VALLOX 252.

• If a water heating unit is used, lead the supply and return pipes (not included in the

delivery) of the heating unit through the lead-in sealings on top of the sound attenuator
unit and VALLOX 252, and connect them to the supply and return water outlets with a
straight fitting, for instance.
(See the figure, items A and B.)

• Mount the sound attenuation segment in place.

• Carefully fix the door of the sound attenuator in place.

• Fix the ducts steadily and tightly to the outlets. If ducts are to be isolated, do so

following the ventilation plan.

Supply and return water

 pipe Ø15/13 2 pcs

Straight fitting

MS15 2 pcs

Supply and return

water outlet 2 pcs

Lead-through tubes

for cables 3 pcs

Sleeve equipped with draught-limiter 3 pcs

Cable sleeve 3 pcs

Supply and return

water pipe Ø15/13 2 pcs

Lead-in sealings for supply

and return water pipes 2 pcs

Sound attenuator unit

(Note! Vallox model)

Duct fitting

Ø250 4 pcs

Lead-through tubes for cables 3 pcs

Lead-in sealing for cable

lead-through tube 3 pcs

Lead-in sealing for cable

sleeve 3 pcs (bottom)

VALLOX 250 L

(Note! model)

Sound attenuation

segment