IO-752:2018/EN 05.12.2018
6
3.1 Main installation regulations
3.1.1 Removing and installing the
front cover
Removing the front cover:
1. Grab the bottom of the cover and pull it towards
you.
2. Lift the cover upwards.
3. Remove the knobs.
Installing the front cover:
1. Put the front cover on the hooks of the back
cover.
2. Place the cover so that the openings of the
panel and fittings are in the same position.
3. Mount the knobs.
3.1.2 Location
•
Water heaters cannot be installed in rooms where
people stay most of the time.
•
The room cubature
– no less than 8 m
3
.
•
The room height
– no less than 2.2 m.
3.1.3 Ventilation
•
Supply ventilation
In the room where the water heater is installed, there
should be a non-closing hole of supply ventilation, of
the surface not less than 200 cm
2
, whose lower edge
should be not higher than 30 cm above the floor level.
It is admissible to supply the outside air from the
adjacent rooms equipped with a non-closing hole of
supply ventilation of the surface not less than 200 cm
2
.
•
Exhaust ventilation
In the room where the water heater is installed, there
should be a non-closing hole of exhaust ventilation
with the surface not smaller than 200 cm
2
, placed as
close to the ceiling as possible.
It is not allowed to use mechanical exhaust
ventilation (e.g. kitchen ventilating hood).
3.1.4 Flue gas offtake system
Water heater should be installed as close as possible to
the individual chimney duct and in a place not exposed
to frost. The cross-sections of the pipe as well as the
flue duct should remain the same along the entire length.
The flue duct should leave the appliance vertically (min.
220mm) to the first elbow. The horizontal section of the
flue duct at the lift of 5% (ca. 3
o
), should not exceed the
length of 2m (Fig. 3.1.3.1) The length of the flue duct,
measured from the axis of the flue duct inlet to the edge
of the duct outlet above the roof should not be less than
2m. The internal surface of the flue-gas duct should be
corrosion-resistant.
•
Water heater connection to the flue gas duct must be
agreed with the proper chimney sweep company and
should meet the requirements presented on Fig.
3.1.3.1.
For the correct water heater operation, the flue gas
conducting system must provide the draught not
Fig. 3.1.3.1 Diagram of water, gas and flue
– gas
conducting systems
