Water Connection; Installation Of Heat Insulation; First Start-Up; Maintenance - STIEBEL ELTRON SB 302 S Operating And Installation Instructions

2.8 Water connection
• Flush the pipe through thoroughly.
• Fit the hot water drain pipe.
• Fit the cold water feed pipe.
Note for SB 302 S and SB 402 S C :
The connection pipe can be fitted to choice
between the feet f . When screwing them
on, use a spanner g to apply counter-pres-
sure. The stability of the connection pipes
is to be checked, and additionally tightened
by the customer if necessary. If required, the
cold water connection can be fitted directly
to the sockets h .
• Instal a type-tested safety group, such as
Stiebel Eltron ZH 1, Order No. 07 43 70 up to
0.6 MPa water pipe pressure (pressure at rest
0.48 MPa). With pressure at rest
> 0.48 MPa, the pressure-reducing valve
DMV/ZH 1, Order No. 07 43 71, is to be addi-
tionally installed.
Installation example H :
– Plan the dimensions of the drain for a ful-
ly-opened safety valve. The drain aperture
of the safety valve must remain open to
the atmosphere.
– The safety valve drain is to be installed
with a permanent downwards inclination.
– The information in the Installation Ins-
tructions under „Safety valve" are to be
taken into account.
H
A Metal discharge pipe (D1) from
temperature relief to tundish.
B Metal discharge pipe (D2) from tundish,
with continuous fall.
Table and worked example.
C Discharge below fixed grating.
Valve outlet size Minimum size of
discharge pipe D1
G 3/4
G 1
1
• Fill the appliance with water by opening the
hot water fitting and flush it through tho-
roughly.
• Carry out the sealing tightness test.
• Note regarding the circulation pipe:
If it is intended that a circulation pipe is to be
installed, the pipe is to be fitted to the socket
A (5) (socket for the thermometer is also
possible).
– Note for SB 302 S and SB 402 S:
Drill out the plastic sheathing at the marking
(e. g. with a 70 mm keyhole saw). The plas-
tic sheathing is to be removed around the
connection piece, so that the circulation pipe
can be fitted. Screw on the ½" transition
piece supplied A (12) with an extension
provided by the customer. Stick the adhesive
rosette A (13) onto the plastic sheathing
(hole cover).
2.9 Installation of heat insulation
SB 602 AC, SB 1002 AC und
SB 650/3 AC
• Install heat insulation
Note for SB 602 AC and SB 1002 AC:
– Cut the insulation (cross cut) in the area of
the thermometer socket (bump) and uncover
the socket.
– Pull the anode display extension through the
hole in the top cover.
hot draw-off
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13 14
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cold feed
1 isolating valve
2 combined control valve set
3 line strainer
4 pressure limiting valve
5 balanced pressure cold draw-off
6 check valve
7 expansion valve
8 expansion vessel
Minimum size of discharge
pipe D2 from tundish
22 mm 28 mm
35 mm
42 mm
28 mm 35 mm
42 mm
54 mm
(Order-No. see Tab. 2)
500 mm max.
16
A
12 9
300 mm
min.
B
11 10
9 tundish
10 electrical earthing bond
11 drain valve
12 WTW... heat exchanger
13 BCG screw-in heating element
14 container
15 FCR... electric heating element
16 combined temperature and pressure relief valve
Maximum resistance allowed, expressed as a length
of straight pipe (i.e. no elbows or bends)
2.10 First start-up
(may only be carried out by a qualified instal-
ler)
Fill the appliance, bleed it, and flush it
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through thoroughly.
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2
Operate the special accessory componen-
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3
ts in accordance with the operating and
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4
1 installation instructions and check that
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they are functioning
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2
5
6
Check the safety valve for proper func-
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6 tion.
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4
Handing over the appliance: 7
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5
Explain how the appliance works to the new
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user, and familiarise them with the proce-
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dures.
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Important notes:
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• Draw the user's attention to possible hazards
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(scalding).
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• Hand over these Instructions for Installation
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11 and Use for safekeeping. All the information
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in these Instructions must be followed care-
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fully. They provide details regarding the safe-
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ty, operation, installation, and maintenance
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of the appliance.
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2.11 Maintenance

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• When carrying out any work, disconnect the
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17 appliance from the mains at all poles.
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7 2
6 5 4
Resistance created by each
Up to 9 m
Up to 18 m
Up to 27 m
Up to 9 m
Up to 18 m
Up to 27 m
3 1
C
elbow or bend
1.0 m
1.4 m
1.7 m
1.4 m
1.7 m
2.3 m