Thermann EVACUATED TUBE SOLAR HOT WATER SYSTEM Owner'S Manual Download Page 2

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Thermann Solar Hot Water System - Owners Manual

Thank You

Thank you for purchasing a Thermann solar hot water system.

Please store this manual somewhere accessible as it holds important information 
about your new Thermann solar hot water system.

In this manual you will find information on:

1. 

How Solar Heating Works

2. 

How Your Booster Works

3. 

System Maintenance and Precautions

4. 

Basic Troubleshooting Guide

5. 

After-sales Service

1. How Solar Heating Works?

1.1 Introduction

Thermann strongly believe in informing the homeowner about the basic operation of the solar water 
heating system. By gaining a basic understanding you can develop realistic expectations about the 
operation of the system, develop habits which maximise energy savings and most importantly, ensure 
safe and reliable operation.

1.2 Summer and Winter Solar Heating

Solar radiation is only half or one third as strong in the winter months compared to summer, and therefore 
not able to provide the same amount of hot water as in summer. For optimal performance of your solar 
system it is recommended that the collectors be angled (pitched) at no less than 20degrees.

Note: for increased performance during winter it is recommended that collectors are pitched at latitude 
plus 10-20 degrees, Correct tilting of the system will provide increased year round performance and 
reduce energy costs further.

1.3 How Does the Thermann System Work

The Thermann solar collector converts the sun’s energy into 

HEAT

, quite different to photovoltaic (PV) solar panels, which 

convert the sun’s energy into 

ELECTRICITY

.

Step 1. 

The evacuated tubes absorb the sun’s energy and 

convert it to useable heat.
 

Step 2. 

The heat inside the evacuated tube, is carried via copper 

heat pipes to the insulated manifold, this contains a copper heat 
exchanger.

Step 3.

 An electronic controller measures the temperature of 

water in the manifold and compares it to the water in the bottom 
of the storage tank. If the manifold temperature is higher, the 
controller switches on a circulation pump which brings the solar 
heated water back down to the storage tank.

Step 4.

 Throughout the day, the controller switches the pump on 

and off to continuously heat water in the storage tank.

Vacuum Space

Absorber Coating

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Evacuated tube 

absorbs sunlight 

and converts to 

usable heat

Heat Transfer

Heat Exchanger

Manifold

Copper 

Heat Pipes

Aluminium 

Heat Fins

Thermann 

Tubes

Framework

UV Stabilised 
Rubber Caps

Tube Clips

PRODUCT

QUALITY

GUARANTEE

WARRANTIES

10 YEAR WARRANTY ON TANK
15 YEAR WARRANTY ON MANIFOLD,
TUBES AND FRAMEWORK

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