Ariston Unvented Hot Water Storage Cylinders NOTE THE MAINS WATER SUPPLY MUST NOT EXCEED 16 BAR

2.5 COLD WATER SUPPLY

2.6 SITING AND FIXING

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2.4	OVERALL DIMENSIONS															TABLE 1
		Model			Storage		Units Pipe Size			Coil					Dimensions in mm							Weight
										Surface												When Full
				Capacity				Inlet Outlet		m2		A		B	C		D	E	F	G	H	Kg
		DIRECT RANGE
		Wall-hung				50 l			1/2”	-	410		120		580		160	475	460			77
		ST 50
		ST 80				75 l			3/4”	-	590		175		740		230	475	460			115
		ST 100				100 l			3/4”	-	550		175		700		230	575	560			141
		Floor Standing				100 l			3/4”	-	530		650		890		-	-	505	265	225	129
		STD ProTech
		STD / STD ProTech / ITD 125				125 l			3/4”	-	700		805		1045		-	-	505	265	225	158/138*
		STD / STD ProTech / ITD 150				150 l			3/4”	-	840		965		1205		-	-	505	265	225	190/164*
		STD / STD ProTech / ITD 210				200 l			3/4”	-	990		1280		1525		-	-	505	265	225	245/220*
		STD / STD ProTech / ITD 300				300 l	3/4"			-	1215		1555		1790		-	-	560	275	255	385/331*
		500 STD ProTech				495 l			1”	-	1390		335		1870		-	-	714			630
		INDIRECT RANGE				125 l			3/4”	0.75	700		805		1045		675	-	505	265	225	166/143**
		STI / STI ProTech / ITI 125
		STI / STI ProTech / ITI 150				150 l			3/4”	0.9	840		965		1205		815	-	505	265	225	201/171**
		STI / STI ProTech / ITI 210				200 l			3/4”	0.9	990		1280		1525		815	-	505	265	225	256/227**
		STI / STI ProTech / ITI 300				300 l			3/4”	0.9	1215		1555		1790		815	-	560	275	255	395/337**
		500 STI ProTech				495 l	1"			1.5	1390		335		1870		700	-	714			641
		*ITD Models **ITI Models
			ST ProTech				STD/STD ProTech/ITD				STI/STI ProTech/ITI							500 STD ProTech
	50-80-100						125-150-200-300				125-150-200-300							500 STI ProTech

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.

NOTE: 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 TABLE 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

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