6
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PRIMARY HEAT
SOURCE (SOLAR)
FLOW
HOT WATER
SUPPLY TO
TAPS
HTPV
DRAIN
ACCUMULATOR
UNVENTED
TWIN COIL CYLINDER
BALANCED
COLD SUPPLY
TO TAPS
AUXILIARY HEAT
SOURCE (BOILER)
FLOW
AUXILIARY HEAT
SOURCE (BOILER)
RETURN
PRIMARY HEAT
SOURCE (SOLAR)
RETURN
EXPANSION
VESSEL
INTRODUCTION 1
INTRODUCTION 1
INTRODUCTION 1
INTRODUCTION 1
INTRODUCTION 1
Note
The accumulator model is designated as
its gross volume, the actual water content
of the accumulator is up to 65% of its gross
volume.
1-3.1 Sizing of System
The size of the Dualstream system is determined by the capacity of the accumulator and
cylinder models selected. As the accumulator provides the pressure for the system it is
important that this is of adequate size.
The accumulator water content is up to 65% of its gross volume.
When sizing the Dualsteam system close consideration should be given to the following:-
1.
Incoming mains supply pipe size.
2.
Incoming mains flow and static pressure.
3.
House type, building height and number of occupants.
4.
Typical daily water usage and peak demands.
5.
Number of bathrooms and total number hot and cold water outlets
6.
Types of shower, taps and baths and the volume and pressure of water to operate
them.
1-3
System Requirements
Fig. 1-2c Twin Coil Cylinder Application
All installations must comply with
relevant regulations - refer to
section 4-1.
1-2.3 Typical Twin Coil Cylinder Layout
SOLAR COLLECTORS
SOLAR SYSTEM
CONTROL
TWIN COIL
CYLINDER
AUXILIARY HEAT
SOURCE (BOILER)
TYPICAL SOLAR WATER HEATING SYSTEM
GAH (Heating Products) Ltd. supply a range of Solar
Water Heating Systems that compliment the GAH
Dualstream System.
For further details consult GAH.