9
The unit may only be operated with a full tank.
The unit must always be disconnected from the
electrical power source before the front hatch is dis-
mantled. Once the unit has been disconnected from
the mains, wait until the fan has come to a standstill
before opening the hatch.
Do not drill any holes in the unit.
Electrical Installation
The connection to the mains must be performed by a
certified electrician. (See the enclosed electrical diagram).
The cable connecting the unit to the Design control panel
must be a 4-conductor, 0.25-mm cable with a maximum
length of 50 m.
System Inspection and Fine-Tuning
To ensure optimal operation of the system, fine-tune it first
using professional air-measuring equipment.
Check the following points, while keeping in mind that the
system can be put into operation before the fine-tuning.
1. Check that the system has been mounted correctly and
that all ducting has been insulated in accordance with the
instructions.
2. Check that the various hatches can be opened so that it
is possible to service and maintain the unit.
3. Check that the filters are clean (they can be dirty after
installation), and replace if necessary before fine-tuning.
4. Check that the condensation drainage is mounted cor-
rectly with a water trap and that this is protected against
frost.
5. Pour 1 l of water into the condensation tray and check
that it flows away without impediment via the conden-
sation drainage hose.
Default setting if the system is started up prior to
fine-tuning:
• Adjust all supply air valves so that the valve
which is closest to the unit is open at 3 turns from the
closed position, while the one furthest away is open at 8
turns from the closed position.
• Then open the valves in between at 4 to 7 turns depending
on how close they are to the unit.
Optimal Fine-Tuning of the System
Use air-measuring equipment. Check that all 5 items in the
section above have been carried out before performing the
fine-tuning. Then put the system into operation.
Set up the system for basic ventilation, i.e. speed 2. To
reduce energy consumption as much as possible, first
adjust the overall atmospheric volume to the desired level
by changing the speed settings in the Service Menu.
Then fine-tune the supply air and extract air valves with the
air-measuring equipment. Remember to lock the valves
when performing the fine-tuning and to turn the conducting
plate on the supply air valves so that air blows in the right
direction.
Finally, recheck and fine-tune the overall atmospheric vol-
ume by adjusting the speeds for Step 2 in the Service Menu.
Then adjust Step 1 and Step 3 to an appropriate interval
in relation to Step 2.
Requirements to the Hot Water Circuit
The following materials can be used for the hot water
installation:
• Copper
• Stainless stain
• Brass
• Synthetic materials
This naturally depends on the materials that have already
been used in the water circuit (of the dwelling). Incorrect
material combinations may result in corrosion damage.
This requires particular attention when
galvanised components and
components containing aluminium are used.
Initial Operation of the Water Circuit
• Fill the tank via the connector spigot and then air it out by
leaving one of the uppermost hot water spigots open until
no more air comes out.
• Recheck the entire water circuit for leaks.
• Connect the unit to the mains.
Inspect all connections of the water circuit for leaks after
start-up.
Cooling Circuit
The unit is delivered in running order No work needs to be
done on the cooling circuit. The control unit will automati-
cally assume control of all functions and start up the
compressor, fan, etc. in order to maintain the set water
temperature.
