Ariston Unvented Hot Water Storage Cylinders - Manual (Page 5)

5
It is important to ensure that the cold water main is capable of supplying the
increased demand which will be imposed on it. Hot and cold water are both
drawn off the same source of supply. Remember, there will not be a storage
tank to help compensate for variations in the demand on the system.
A minimum pressure of approximately 1.5 bar and 20 litres per minute is
required for satisfactory operation. 85% of UK dwellings have a mains
pressure above 2.0 bar.
N OTE : THE MAINS WATER SUPPLY MUST NOT EXCEED 16 BAR.
The cylinder should be left packed until it is time to install. When unpacking
the appliance follow the guidelines within the packaging and take care not to
damage the temperature and pressure relief valve.
The cylinder may be installed at any convenient position, as it is connected
to the mains cold water supply, it is equally effective on any floor, however,
consideration must be given to allow ease of access for maintenance
purposes.
However, do not install the unit in premises which may be subject to
freezing. Ensure that the floor load bearing strength is adequate to take the
weight of the cylinder when full of water (see
T ABLE 1).
The ST50, ST80 and ST100 ProTech models are wall mounted. All other
models are free standing. These are supplied with feet which are attached to
the heater via self-tapping screws which are also supplied. All units must be
installed in the VERTICAL POSITION.
For maintenance purposes leave at least 500 mm free space in front of the
unit, for access.
2.5 C OLD W ATER S UPPLY
2.4 O VERALL D IMENSIONS
2.6 S ITING AND F IXING
DIRECT RANGE
Wall-hung
ST 50
ST 80
ST 100
Floor Standing
STD ProTech
STD / STD ProTech / ITD 125
STD / STD ProTech / ITD 150
STD / STD ProTech / ITD 210
STD / STD ProTech / ITD 300
500 STD ProTech
INDIRECT RANGE
STI / STI ProTech / ITI 125
STI / STI ProTech / ITI 150
STI / STI ProTech / ITI 210
STI / STI ProTech / ITI 300
500 STI ProTech
50 l
75 l
100 l
100 l
125 l
150 l
200 l
300 l
495 l
125 l
150 l
200 l
300 l
495 l
1/2”
3/4”
3/4”
3/4”
3/4”
3/4”
3/4”
3/4"
1”
3/4”
3/4”
3/4”
3/4”
1"
410
590
550
530
700
840
990
1215
1390
700
840
990
1215
1390
-
-
-
-
-
-
-
-
-
0.75
0.9
0.9
0.9
1.5
120
175
175
650
805
965
1280
1555
335
805
965
1280
1555
335
580
740
700
890
1045
1205
1525
1790
1870
1045
1205
1525
1790
1870
160
230
230
-
-
-
-
-
-
675
815
815
815
700
475
475
575
-
-
-
-
-
-
-
-
-
-
-
460
460
560
505
505
505
505
560
714
505
505
505
560
714
77
115
141
129
158/138*
190/164*
245/220*
385/331*
630
166/143**
201/171**
256/227**
395/337**
641
T ABLE 1
Model Storage Units Pipe Size Coil Dimensions in mm Weight
Surface When Full
Capacity Inlet Outlet m 2 A B C D E F G H Kg
265
265
265
265
275
265
265
265
275
225
225
225
225
255
225
225
225
255
*ITD Models **ITI Models
ST ProTech
50-80-100
500 STD ProTech
500 STI ProTech
STD/STD ProTech/ITD
125-150-200-300
STI/STI ProTech/ITI
125-150-200-300
www.tradeplumbing.co.uk Call Sales On 08708034288
www.tradeplumbing.co.uk Call Sales On 08708034288