Technical data

37
GB
5938 034 01
5.1 WATER SUPPLY CHARACTERISTICS
The appliance must be supplied with drinking water having
specific characteristics given in this section.
HARDNESS FILTER
°f ppm °dH
Water
in le t
Appl. Hardness
A ^ 0,5 - 5 5 - 50 0,28 - 2,8
B ^ 0,5 - 5 5 - 50 0,28 - 2,8
C ^ m ax 5 m ax 50 m ax 2,8
A ^ m ax 5 m ax 50 m ax 2,8
B ^ m ax 40 m ax 400 m ax 22
C ^ m ax 5 m ax 50 m ax 2,8
N
B
^ OPERATING LEVEL (C = Convect, Convection).
The hardness values given in the table are for reducing scaling
inside the steam generator and possible cooking compartment
washing system.
If the available water does not have these hardness characteristics
a water softener must be installed.
Therefore the Automatic Water Softener with automatic
regeneration for installing on the inlet line, can be requested as
an accessory; it has a Resin Sterilizer kit (also by request).
HARDNESS AND CHLORIDE FILTERS
The chloride concentration (Cl-) (ppm - mg/l) values with pH
(>7) and Conductivity (µS/cm) (measured at 20°C) must be
such as to not damage the steel structures inside the oven (only
water inlet B).
Therefore the characteristics of the available water must be
identified in the graph given at the end of this handbook (page
299), if necessary installing at the inlet the type of filter indicated
in the relevant area of the values.
The filters indicated are:
- No filter for chloride (Cl-) in the conforming area (Normal)
- Nanofilter
as an accessory on request, called Water Filter.
- Osmotizer.
Make sure the water coming out the filter is inside the optimum
area (Normal).
These filters also have the function of reducing the water
hardness to optimum values (below 5°f), and therefore also act
as a water softener.
ATTENTION: Periodical checking according to the filter
manufacturer’s instructions is important to maintain its efficiency
and avoid the risk of corrosion in the appliance.
Level C ovens are convection ovens. If water having
characteristics outside those specified is used to create humidity
inside the oven, there will be the risk corrosion of the compartment
and that present inside it.
Carry out regular maintenance of the water softeners and filters
to ensure their optimum efficiency.
To avoid damage to the appliance, after every periodical
regeneration do a filter cleaning cycle without introducing water
in the oven.
The manufacturer declines any liability in case of incorrect
maintenance.
Important:
The use of dosing systems designed to prevent the build-
up of lime-scale in pipes (i.e. polyphosphate dosing
systems) is prohibited since such systems may impair the
performance of the appliance.
For UK and COMMONWEALTH only:
In accordance with "the water supply (Water Fittings)
Regulations 1999", it is mandatory that this appliance when
installed to the mains water supply has fitted an approved
"double check valve" connected upstream of the appliance.
Failure to comply with these regulations may lead to the
appliance being disconnected.
5.2 WATER DRAIN SYSTEM
- OVEN level A -
The oven is supplied with an air-break system to prevent any
backflow from the drainage system from reaching the oven’s
internal circuits and the cooking chamber. The presence of this
system means that the drain pipe can be connected directly to
the mains drainage system or routed to a floor gulley with grating.
The flexible drainage hose or rigid pipe can be directed to the
side or rear of the appliance if the oven is not positioned against
a wall; this line must not be directed towards the front of the
appliance to prevent interference with roll-in grid racks. The
drainage pipe internal diameter must be no smaller than the
oven drain outlet (1” 1/4), no longer than 1 metre and must
resist temperatures of up to at least 100°C. Avoid restrictions in
the case of flexible hose pipes, do not fit elbows on metal pipes
anywhere along the drainage line. Also avoid horizontal sections
in which water might collect (minimum gradient 5%).
C - Oven drain
C1 - Safety outlet
Important:
- Do not obstruct the safety outlet C1.
- Do not connect the safety outlet C1 to the drainage system.
Note:
If water comes out of the AIR-BREAK (safety outlet C1) this means
the drain C is blocked. Any elimination of the obstruction must
be carried out by specialised technical personnel.
- OVEN level B and C -
Connect drain fitting “C” to a drain pipe of the same diameter which
is between 0.5 and 3 metres in length and is resistant to
temperatures of at least 100°C. The drain pipe must be siphoned
(height 80 mm) to an open drain “O” (“Air-Break”) or floor grating
(see Fig. 12b) in order to prevent any back-flow from the sewage
system from reaching the piping inside the oven or oven chamber.
Check the hoses and elbows on metal pipes for kinks or pinching
along the entire drain line and make sure the drain line has a
minimum gradient of 5° to prevent water from collecting inside the
system.
Important: The drain system must be installed so that any
vapours from the open drain do not enter the aeration vents
under the appliance.
OK
min 5°
C
AIR-BREAK
T max = 100°C
max 3m
0,08 m
min 0,5m
O
min 0,04m