Introduction - GAH Electrastream User And Installation Instructions Manual

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Introduction

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Note
For components supplied with system refer
to page 28.
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This Handbook has been compiled to assist in the Installation and Operation of GAH
(HEATING PRODUCTS) LIMITED Electrastream domestic hot and cold water and central
heating system.
After installation the Installer of the system should give full operating instructions to the
householder for the Electrastream System.
1-1.1 The Electrastream System
The Electrastream system by GAH (Heating Products) Ltd. has been developed as a cost
effective solution for domestic hot and cold water and electric central heating with water
filled radiators.
Electrastream is suitable for flats, small dwellings, offices, home offices and granny
annexes.
1-1.2 Basic Principles
Electrastream is available in two options:-
ELECTRASTREAM PLUS - with cold water storage (accumulator)
ELECTRASTREAM - without cold water storage.
ELECTRASTREAM PLUS
Water in the unvented cylinder is heated by a high powered titanium electric immersion
heater. Hot water is drawn from the cylinder and mixed with cold water by a thermostatic
mixing valve; this ensures safer lower temperatures at the hot water outlets.
The hot water within the unvented indirect cylinder also heats the water for the heating
system via the indirect coil within the cylinder. The circulating pump for the heating
system is controlled by a thermostat and programmable timer with override so that heat
is available on demand, providing there is a supply of hot water.
ELECTRASTREAM PLUS
The Electrastream Plus system is supplied with a cold water storage.
The accumulator has an internal controlled butyl diaphragm, incoming cold water is
stored within this diaphragm at mains pressure. The air space between the diaphragm
and the accumulator case is pressurised, this balances the supply and maintains
pressure to the unvented hot water cylinder and cold outlets. When hot and cold water
outlets are turned on, the stored water from the accumulator supplements water from the
incoming main, this results in consistent pressure and flow to all taps, showers and baths
even when outlets are used simultaneously. Pressure will be sustained for as long as the
accumulator is holding sufficient volume of water.
Fig. 1-1a Electrastream
INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION
ELECTRASTREAM
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