EcoSolar Energy Conscious Design Limited
Table of Contents
Thank You 1
Selling the benefits of SWH 1
Selecting the most appropriate
system
2
Types of system
2
Basics of system sizing
4
System operation and control
4
Caution - issues
9
Building consent and Code Compliance
9
Heat Rejection
9
System Temperatures
9
Freeze Protection
10
Water quality
11
Collectors
12
Cylinders
13
Low pressure
13
Medium pressure systems
13
Mains pressure
13
Cylinders with/without heat exchangers 13
Cylinder capacity
14
Horizontal versus vertical cylinders
14
Pumped/thermosyphon
systems
14
Pumped systems
14
Thermosyphon systems
15
System types
16
Mains pressure system
16
Low pressure system
17
Connection to an existing hot water cylinder,
with no solar system connections
17
Connection to a hot water cylinder, with solar
system connections
17
Solar water heating system
types and schematics
18
Direct or open loop systems
18
Indirect or closed loop systems
21
Indirect drainback system
23
Thermosyphon systems
26
General Installation
27
Pipework
27
Roof Penetrations
28
Relief Valve
28
Safe Tray
28
Controller
28
Solar Collector Location 29
Orientation
29
Shadows
29
Inclination
29
Solar Collector Mounting 31
Corrugated / iron sheet roofing
31
Tiled roofing
33
Flat roof or to increase or decrease collector
inclination from roof pitch
35
