Section 4 – Installation
NOTE!
Pre-fill water traps or installed hose bends after completion.
NOTE!
Ensure that the condensate hoses are sufficiently inclined! Incorrect installation can cause water
damage!
NOTE!
The condensate hoses must be checked and cleaned regularly, at least annually!
4.4 Air duct system
The connection nozzles for the air duct system are on the top side of the unit in the vertical direction.
Fig. 4.4 Air duct connections
1 Fresh air (outside air being drawn in)
NOTE!
Connecting exhaust hoods or vented dryers
to the ventilation unit is not permitted! We
recommend using exhaust hoods with
recirculation and condensation dryers.
2 Supply air (air going into the rooms)
3 Extract air (air extracted from the rooms)
4 Exhaust air (air going into outside space)
The Fresh air (1) and Exhaust air (4) ducts connect the ventilation unit to the outer wall screens or ceiling
hoods.
The Supply air (2) and Extract air (3) ducts connect the ventilation unit to the required room grilles, diffusers
or dampers.
The ducting should be routed from a distributor, without branching, star-like to its required room.
NOTE!
The air-duct system must be dimensioned and designed in accordance with the requirements of the
building and the ventilation unit chosen (see Section "2.4 System design"). An incorrectly specified
system can lead to insufficient ventilation and can cause high noise levels and an excessive energy
consumption. Any applicable guidelines and regulations must be observed and complied with.
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Section 6 – Control / Service menu
Bypass shutter Motor
•
Set the Bypass shutter to Open or Closed.
Defrost Heater
•
When fitted, the external defrost heater output can be switched On or Off.
Note: The heater output will not switch ON if the fans are not running.
Boost Heater
•
When fitted, the external boost heater output can be switched On or Off.
Note: The heater output will not switch ON if the fans are not running.
NOTE!
Further status and operation information for the ventilation unit can be found under User menu –
User Information.
6.3.5 Installer menu – Auto Check Routine
The Autocheck menu is used to check, in sequence :
•
The Supply and Extract flow rates (in m3/h) at Speed 1 then 2 then 3
•
Manually open and close the Bypass shutter
•
Display the Fresh air temperature and the position of the Bypass shutter
•
Switch the Defrost heater on and off
•
Switch the Boost heater on and off
6.4 Operational functions
6.4.1 Bypass control
The Bypass is used to allow cool Fresh air to be supplied into the building without being warmed up by the
units heat exchanger. (The heat exchanger is “bypassed”).
This function can be used in summer in order bring cool outside air (e.g. at night) into the rooms.
The Bypass operates automatically and is setup using the “Adjust User Settings” in the User menu.
The
switching temperature
can be set within the range -20 to +39°C. The default setting is +21°C.
1 Bypass closed (heat recovery works)
2 Bypass open/enabled (no heat recovery)
3 Fresh-air temperature
4 Extract-air temperature t
B
Bypass switching
temperature
Fig. 6.11 Bypass control
The Bypass only works during the months set in the User menu. The default setting is May to October.
A “
B
” in the normal display means that the Bypass is active / open. (Heat recovery is disabled).
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