VALLOX 252 D
MOUNTING INSTRUCTIONS
11
Silencer
General
• The silencer is a duct silencer that should be mounted on top of
VALLOX 252 D. The silencer includes a cover that can be
opened, enabling the cleaning of the silencer without
detaching the ducts.
• The silencer unit also features detachable silencer segments in
supply and extract air ducts.
• 4 ø250 external fittings enable the laying of ducts straight
from the unit by using bends etc.
• The top of the silencer unit incorporates lead-in sealings for the
lead-through tubes of cables and for the supply and return
water pipes of a water heating unit, if one is used.
• The weight of the silencer unit is 105kg including the door,
and 82kg without the door.
Mounting
NOTE! BEFORE MOUNTING, CHECK THE MODEL OF VALLOX 252 (L or R).
• Detach the door of the silencer. (See the adjoining picture.)
• Detach the cable 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
exhaust duct of the silencer 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 silencer segment located in the supply
air duct of the unit. NOTE! VALLOX 252 model L or R.
(See the figure.)
• Lift the silencer 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 silencer 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
silencer 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 silencer segment in place.
• Carefully fix the door of the silencer 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
Supply and return
water outlet 2 pcs
Straight fitting
MS15 2 pcs
Silencer segment
Lead-through tubes
for cables 3 pcs
Cable sleeve equipped with draught-limiter 3 pcs
Supply and return water pipe
ø15/13 2 pcs
Lead-in sealings for supply
and return water pipes 2 pcs
Silencer unit (Note! model)
Duct fitting ø250 4 pcs
Lead-through tubes for cables 3 pcs
Cable sleeve 3 pcs
Lead-in sealing for cable
sleeve 3 pcs (bottom)
Lead-in sealing for the cable
lead-through tube 3pcs
VALLOX 250 L (Note!
model)
