Dualstream Technical Specification

Dualstream Technical Specification - Accumulator

The accumulator dimensions

The accumulator parts

Dualstream is protected by Patent No. 9905894.3 this protection applies to the use of any accumulator with any unvented cylinder and the application of its use subject to permission being obtained form GAH (HEATING PRODUCTS) LIMITED WRAS Certificate No. 0109003.

This unique range of accumulators feature a patented controlled action diaphragm with special diffuser to prevent stratification.

Maximum working pressure 10 bar (shell)
Maximum operating temperature 70c
Pre-charge pressure should be set at 1.5 bar below mains static pressure, minimum pre-charge pressure 0.5 bar. This should be carried out before the accumulator is connected to the system
The accumulator will hold approximately half its total volume in mainss water at mains pressure

Accumulator size (litres)	Diameter	Height	Nett weight (kg)	Connection size
80 ltr*	410mm	730mm	16.3	1"
170 ltr*	535mm	920mm	30.4	1"
240 ltr†	535mm	1215mm	37.2	1"
310 ltr*	535mm	1575mm	44.5	1"
450 ltr*	668mm	1575mm	69.5	1"
*Sizes used with standard systems †Option on 200-125, 150 or 210 hot water cylinders

Dualstream Technical Specification - Accumulator

Indirect and Direct Unvented Cylinders

Quality steel tank tested to 12 bar
Exclusive vitreous enamel coating
CFC free polyurethane thermal insulation
All plumbing connections within a 90º angle
Unique coil allows full quantity of water to be heated
Slimmest design available on the market
Secondary return connection on all models

Model	Storage Capacity	Units pipe size inlet outlet	Coil surface m²	Coil rating	Reheat time (t=50c)	Element power	Max temp.	A	B	C	D	E	F	G	Nett weight (kg)
DIRECT RANGE
Contract STD 125	125 ltr	3/4"			150 min	3kw+3kw	70c	650	755	995		505	265	225	33
Contract STD 150	150 ltr	3/4"			175 min	3kw+3kw	70c	790	915	1155		505	265	225	40
Contract STD 210	200 ltr	3/4"			240 min	3kw+3kw	70c	940	1230	1475		505	265	225	45
Contract STD 300	300 ltr	3/4"			350 min	3kw+3kw	70c	1215	1555	1790		560	275	255	85
500 STD UK	495 ltr	1"			290 min	6kw	70c	1390	335	1870		714			130
INDIRECT RANGE
Contract STI 125	125 ltr	3/4"	0.75	20.5kw	18 min	3kw	70c	650	755	995	625	505	265	225	41
Contract STI 150	150 ltr	3/4"	0.9	26.7kw	22 min	3kw	70c	790	915	1155	765	505	265	225	51
Contract STI 210	200 ltr	3/4"	0.9	26.7kw	26 min	3kw	70c	940	1230	1475	765	505	265	225	56
Contract STI 300	300 ltr	3/4"	0.9	26.7kw	40 min	3kw	70c	1215	1555	1790	815	560	275	255	95
500 STI UK	495 ltr	1"	1.5	31.8kw	54 min	6kw	70c	1390	335	1870	700	714			149

Each Dualstream system is supplied with a comprehensive illustrated manual, which takes you through the installation process.

To speed up installation time each Dualstream system has a factory fitted copper framework including the following components:

Combination valve (3.5 bar pre-set pressure reducing valve), line strainer, check valve and expansion vessel connection point.
The framework includes expansion valve discharge to the tundish linked to the discharge pipe form the 1/2" temperature and pressure relief valve.
The 3kw immersion heater is fitted (indirect models only) complete with regulation thermostat, dual pole thermal cut out, (2.3kw immersion heaters on direct models). ProTech anti corrosion systems o models up to 300 ltr.
A two port motorised valve supplied to be installed on a 'S' plan system (indirect models only).

In addition all Dualstream systems are supplied with one 22mm double check valve and three 22mm full bore lever valves.

Unique Concept...

Unrivalled Performance