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electrical trace heating in order to keep the condensate dis-
charge pipe frost-free.
4.2.3
Design of the condensate discharge for flat-
roof installation
For flat-roof installation, the condensate can be discharged
by connecting a condensate discharge pipe to a downpipe or
a roof run-off. In this case, depending on the local conditions,
you must use electrical trace heating in order to keep the
condensate discharge pipe frost-free.
5
Operation
5.1
Switching on the product
▶
Switch on all of the disconnectors to which the product is
connected in the building.
5.2
Operating the product
It is operated via the indoor unit's control (→ Operating in-
structions for the indoor unit) and via the optional system
control (→ Operating instructions for the system control).
5.3
Guaranteeing frost protection
1.
If no system separation for guaranteeing the frost pro-
tection is present, ensure that the product is switched
on and remains switched on.
2.
Ensure that no snow accumulates around the air inlet
grille and air outlet grille.
5.4
Switching off the product
1.
Switch off all of the disconnectors to which the product
is connected in the building.
2.
Note that this means that frost protection is no longer
guaranteed if no system separation for guaranteeing
the frost protection is present.
6
Care and maintenance
6.1
Keeping the product clear
1.
Regularly remove branches and leaves that have
gathered around the product.
2.
Regularly remove leaves and dirt from the ventilation
grille below the product.
3.
Regularly remove snow from the air inlet grille and from
the air outlet grille.
4.
Regularly remove snow that has gathered around the
product.
0020297933_07 Operating instructions
6.2
Cleaning the product
1.
Clean the casing with a damp cloth and a little solvent-
free soap.
2.
Do not use sprays, scouring agents, detergents,
solvents or cleaning agents that contain chlorine.
6.3
Carrying out maintenance work
Danger!
Risk of injury and risk of material damage
due to neglected or incorrect maintenance
and repairs.
Neglected or incorrect maintenance work or
repairs may lead to personal injury or dam-
age to the product.
▶
Never attempt to carry out maintenance
work or repairs on the product.
▶
Employ an authorised installation com-
pany to complete such work. We recom-
mend making a maintenance contract.
7
Troubleshooting
7.1
Eliminating faults
▶
If you observe a cloud of vapour on the product, you do
not have to do anything. This effect may arise during the
thawing process.
▶
If the product will no longer start up, check whether the
power supply is interrupted. If required, switch on all of
the disconnectors to which the product is connected in
the building.
▶
Contact a competent person if the measure that is de-
scribed is unsuccessful.
8
Decommissioning
8.1
Temporarily decommissioning the product
1.
Switch off all of the disconnectors to which the product
is connected in the building.
2.
Protect the heating installation against frost.
8.2
Permanently decommissioning the product
▶
Have a competent person permanently decommission
the product.
53
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